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00556 ; * usb9.h and its function is to specifically service this
00557 ; * event.
00558 ; *****************************************************************************/
00050E 00559 USBCtrlTrfInHandler
00560 ; movlb high 0x400 ; Point to proper bank
00050E 0E04 00561 movlw ADR_PENDING_STATE ; Must check if in ADR_PENDING_STATE
000510 631A 00562 cpfseq usb_device_state
000512 D006 00563 bra USBCtrlTrfInHandler1
000514 5120 00564 movf SetupPkt + bDevADR, W
000516 6E6E 00565 movwf UADDR
000518 0E05 00566 movlw ADDRESS_STATE ; If UADDR > 0
00051A B4D8 00567 btfsc STATUS, Z
00051C 0E03 00568 movlw DEFAULT_STATE
00051E 6F1A 00569 movwf usb_device_state
000520 00570 USBCtrlTrfInHandler1
000520 0E01 00571 movlw CTRL_TRF_TX
000522 6316 00572 cpfseq ctrl_trf_state
000524 D09D 00573 bra USBPrepareForNextSetupTrf
000526 D805 00574 rcall USBCtrlTrfTxService
000528 0EC8 00575 movlw _USIE|_DAT1|_DTSEN
00052A BD04 00576 btfsc ep0Bi + Stat, DTS
00052C 0E88 00577 movlw _USIE|_DAT0|_DTSEN
00052E 6F04 00578 movwf ep0Bi + Stat
000530 0012 00579 return
00580
00581
00582 ; From usbctrltrf.c line 260
00583 ;/******************************************************************************
00584 ; * Function: void USBCtrlTrfTxService(void)
00585 ; *
00586 ; * PreCondition: pSrc, wCount, and usb_stat.ctrl_trf_mem are setup properly.
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 37
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VALUE
00587 ; *
00588 ; * Input: None
00589 ; *
00590 ; * Output: None
00591 ; *
00592 ; * Side Effects: None
00593 ; *
00594 ; * Overview: This routine should be called from only two places.
00595 ; * One from USBCtrlEPServiceComplete() and one from
00596 ; * USBCtrlTrfInHandler(). It takes care of managing a
00597 ; * transfer over multiple USB transactions.
00598 ; *
00599 ; * Note: Copies one packet-ful of data pSrc (either ROM or RAM) to
00600 ; * EP0 IN buffer. It then updates pSrc to be ready for next
00601 ; * piece.
00602 ; * This routine works with isochronous endpoint larger than
00603 ; * 256 bytes and is shown here as an example of how to deal
00604 ; * with BC9 and BC8. In reality, a control endpoint can never
00605 ; * be larger than 64 bytes.
00606 ; *****************************************************************************/
000532 00607 USBCtrlTrfTxService
00608 ; movlb high 0x400 ; Point to proper bank
000532 5118 00609 movf wCount, W ; Preset wCount bytes to send
000534 6F10 00610 movwf usb_temp
000536 5119 00611 movf wCount + 1, W
000538 6F11 00612 movwf usb_temp + 1
00053A 0800 00613 sublw high EP0_BUFF_SIZE ; Make sure count does not exceed maximium length
00053C E304 00614 bnc USBCtrlTrfTxServiceCopy
00053E E107 00615 bnz USBCtrlTrfTxServiceSub
000540 5118 00616 movf wCount, W
000542 0840 00617 sublw low EP0_BUFF_SIZE
000544 E204 00618 bc USBCtrlTrfTxServiceSub
000546 00619 USBCtrlTrfTxServiceCopy
000546 0E40 00620 movlw low EP0_BUFF_SIZE ; Send buffer full of bytes
000548 6F10 00621 movwf usb_temp
00054A 0E00 00622 movlw high EP0_BUFF_SIZE
00054C 6F11 00623 movwf usb_temp + 1
00054E 00624 USBCtrlTrfTxServiceSub
00054E 5110 00625 movf usb_temp, W ; Subtract actual bytes to be sent from the buffer
000550 6F05 00626 movwf ep0Bi + Cnt ; Save low number of bytes to send while we're here
000552 5F18 00627 subwf wCount, F
000554 5111 00628 movf usb_temp + 1, W
000556 5B19 00629 subwfb wCount + 1, F
000558 5104 00630 movf ep0Bi + Stat, W ; Get full Stat byte
00055A 0BFC 00631 andlw 0xfc ; Clear bottom bits
00055C 1111 00632 iorwf usb_temp + 1, W ; Put in high bits of bytes to send
00055E 6F04 00633 movwf ep0Bi + Stat ; Save it out
000560 EE24 F05E 00634 lfsr 2, CtrlTrfData ; Set destination pointer
000564 5111 00635 movf usb_temp + 1, W ; Check high byte for 0
000566 E102 00636 bnz USBCtrlTrfTxServiceRomRam ; High byte not 0, must have something to do
000568 5110 00637 movf usb_temp, W ; Check low byte for 0
00056A E022 00638 bz USBCtrlTrfTxServiceExit ; If both 0 then nothing to send this time
00056C 00639 USBCtrlTrfTxServiceRomRam
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 38
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VALUE
00056C A31D 00640 btfss usb_stat, ctrl_trf_mem ; ROM or RAM?
00056E D012 00641 bra USBCtrlTrfTxServiceRam ; RAM
000570 C412 FFF6 00642 movff pSrc, TBLPTRL ; Move source pointer to TBLPTR
000574 C413 FFF7 00643 movff pSrc + 1, TBLPTRH
000578 6AF8 00644 clrf TBLPTRU
00057A 00645 USBCtrlTrfTxServiceRomLoop
00057A 0009 00646 tblrd *+
00057C CFF5 FFDE 00647 movff TABLAT, POSTINC2 ; Copy one buffer to the other
000580 0009 00648 tblrd *+ ; Skip high location
000582 0710 00649 decf usb_temp, F ; Count down number of bytes
000584 E1FA 00650 bnz USBCtrlTrfTxServiceRomLoop
000586 0711 00651 decf usb_temp + 1, F
000588 E2F8 00652 bc USBCtrlTrfTxServiceRomLoop
00058A CFF6 F412 00653 movff TBLPTRL, pSrc ; Update source pointer
00058E CFF7 F413 00654 movff TBLPTRH, pSrc + 1
000592 0012 00655 return
000594 00656 USBCtrlTrfTxServiceRam
000594 C412 FFE1 00657 movff pSrc, FSR1L ; Move source pointer to FSR1
000598 C413 FFE2 00658 movff pSrc + 1, FSR1H
00059C 00659 USBCtrlTrfTxServiceRamLoop
00059C CFE6 FFDE 00660 movff POSTINC1, POSTINC2 ; Copy one buffer to the other
0005A0 0710 00661 decf usb_temp, F ; Count down number of bytes
0005A2 E1FC 00662 bnz USBCtrlTrfTxServiceRamLoop
0005A4 0711 00663 decf usb_temp + 1, F
0005A6 E2FA 00664 bc USBCtrlTrfTxServiceRamLoop
0005A8 CFE1 F412 00665 movff FSR1L, pSrc ; Update source pointer
0005AC CFE2 F413 00666 movff FSR1H, pSrc + 1
0005B0 00667 USBCtrlTrfTxServiceExit
0005B0 0012 00668 return
00669
00670
00671 ; From usbctrltrf.c line 330
00672 ;/******************************************************************************
00673 ; * Function: void USBCtrlTrfRxService(void)
00674 ; *
00675 ; * PreCondition: pDst and wCount are setup properly.
00676 ; * pSrc is always &CtrlTrfData
00677 ; * usb_stat.ctrl_trf_mem is always _RAM.
00678 ; * wCount should be set to 0 at the start of each control
00679 ; * transfer.
00680 ; *
00681 ; * Input: None
00682 ; *
00683 ; * Output: None
00684 ; *
00685 ; * Side Effects: None
00686 ; *
00687 ; * Overview: Transfers bytes received, at EP0 OUT buffer CtrlTrfData,
00688 ; * to user's buffer pointed by pDst.
00689 ; * This routine only knows how to handle raw byte data.
00690 ; * HIDmaker handles transferring and unpacking by a callback
00691 ; * function in the generated main program, called from here.
00692 ; *
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 39
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VALUE
00693 ; * Note: None
00694 ; *****************************************************************************/
0005B2 00695 USBCtrlTrfRxService
00696 ; movlb high 0x400 ; Point to proper bank
0005B2 5101 00697 movf ep0Bo + Cnt, W ; Get low number of bytes to read
0005B4 6F10 00698 movwf usb_temp ; usb_temp & usb_temp + 1 are bytes to read
0005B6 2718 00699 addwf wCount, F ; Accumulate total number of bytes read
0005B8 5100 00700 movf ep0Bo + Stat, W ; Get high bits to read
0005BA 0B03 00701 andlw 0x03 ; Mask to the count
0005BC 6F11 00702 movwf usb_temp + 1 ; Save to high byte of bytes to read
0005BE 2319 00703 addwfc wCount + 1, F ; Add overflow from low byte (C) and high byte to total number
0005C0 EE14 F05E 00704 lfsr 1, CtrlTrfData ; Point FSR1 to source
0005C4 C414 FFD9 00705 movff pDst, FSR2L ; Move destination pointer to FSR2
0005C8 C415 FFDA 00706 movff pDst + 1, FSR2H
0005CC 5111 00707 movf usb_temp + 1, W ; Check high byte for 0
0005CE E102 00708 bnz USBCtrlTrfRxServiceLoop ; High byte not 0, must have something to do
0005D0 5110 00709 movf usb_temp, W ; Check low byte for 0
0005D2 E00A 00710 bz USBCtrlTrfRxServiceExit ; If both 0 then nothing to send this time
0005D4 00711 USBCtrlTrfRxServiceLoop
0005D4 CFE6 FFDE 00712 movff POSTINC1, POSTINC2 ; Copy one buffer to the other
0005D8 0710 00713 decf usb_temp, F ; Count down number of bytes
0005DA E1FC 00714 bnz USBCtrlTrfRxServiceLoop
0005DC 0711 00715 decf usb_temp + 1, F
0005DE E2FA 00716 bc USBCtrlTrfRxServiceLoop
0005E0 CFD9 F414 00717 movff FSR2L, pDst ; Update destination pointer
0005E4 CFDA F415 00718 movff FSR2H, pDst + 1
0005E8 00719 USBCtrlTrfRxServiceExit
0005E8 0012 00720 return
00721
00722
00723 ; From usbctrltrf.c line 382
00724 ;/******************************************************************************
00725 ; * Function: void USBCtrlEPServiceComplete(void)
00726 ; *
00727 ; * PreCondition: None
00728 ; *
00729 ; * Input: None
00730 ; *
00731 ; * Output: None
00732 ; *
00733 ; * Side Effects: None
00734 ; *
00735 ; * Overview: This routine wrap up the ramaining tasks in servicing
00736 ; * a Setup Request. Its main task is to set the endpoint
00737 ; * controls appropriately for a given situation. See code
00738 ; * below.
00739 ; * There are three main scenarios:
00740 ; * a) There was no handler for the Request, in this case
00741 ; * a STALL should be sent out.
00742 ; * b) The host has requested a read control transfer,
00743 ; * endpoints are required to be setup in a specific way.
00744 ; * c) The host has requested a write control transfer, or
00745 ; * a control data stage is not required, endpoints are
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 40
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VALUE
00746 ; * required to be setup in a specific way.
00747 ; *
00748 ; * Packet processing is resumed by clearing PKTDIS bit.
00749 ; *
00750 ; * Note: None
00751 ; *****************************************************************************/
0005EA 00752 USBCtrlEPServiceComplete
00753 ; movlb high 0x400 ; Point to proper bank
0005EA 0E00 00754 movlw MUID_NULL
0005EC 6317 00755 cpfseq ctrl_trf_session_owner
0005EE D00A 00756 bra USBCtrlEPServiceComplete1
00757 ;
00758 ; No handlers claimed ownership of this Setup packet.
00759 ; If no one knows how to service this request then stall.
00760 ; Must also prepare EP0 to receive the next SETUP transaction.
0005F0 0E40 00761 movlw EP0_BUFF_SIZE
0005F2 6F01 00762 movwf ep0Bo + Cnt
0005F4 0E1E 00763 movlw low SetupPkt
0005F6 6F02 00764 movwf ep0Bo + ADRL
0005F8 0E04 00765 movlw high SetupPkt
0005FA 6F03 00766 movwf ep0Bo + ADRH
0005FC 0E84 00767 movlw _USIE|_BSTALL
0005FE 6F00 00768 movwf ep0Bo + Stat
00769 ; movlw _USIE|_BSTALL
000600 6F04 00770 movwf ep0Bi + Stat
000602 D02C 00771 bra USBCtrlEPServiceCompleteExit
00772 ;
00773 ; A module has claimed ownership of the control transfer session.
000604 00774 USBCtrlEPServiceComplete1
000604 AF1E 00775 btfss SetupPkt, DataDir
000606 D01D 00776 bra USBCtrlEPServiceComplete2
000608 5119 00777 movf wCount + 1, W ; Make sure count does not exceed max length requested by Host
00060A 5D25 00778 subwf SetupPkt + wLength + 1, W
00060C E304 00779 bnc USBCtrlEPServiceCompleteCopy
00060E E107 00780 bnz USBCtrlEPServiceComplete11
000610 5118 00781 movf wCount, W
000612 5D24 00782 subwf SetupPkt + wLength, W
000614 E204 00783 bc USBCtrlEPServiceComplete11
000616 00784 USBCtrlEPServiceCompleteCopy
000616 C424 F418 00785 movff SetupPkt + wLength, wCount ; Set count to maximum
00061A C425 F419 00786 movff SetupPkt + wLength + 1, wCount + 1
00787 ;
00788 ; Setup packet's data direction is "Device to Host"
00061E 00789 USBCtrlEPServiceComplete11
00061E DF89 00790 rcall USBCtrlTrfTxService ; Actually copy the data to EP0 IN buffer
000620 0E01 00791 movlw CTRL_TRF_TX
000622 6F16 00792 movwf ctrl_trf_state
00793 ; Control Read:
00794 ; <SETUP[0]><IN[1]><IN[0]>...<OUT[1]> | <SETUP[0]>
00795 ; 1. Prepare OUT EP to respond to early termination
00796 ;
00797 ; NOTE:
00798 ; If something went wrong during the control transfer,
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 41
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VALUE
00799 ; the last status stage may not be sent by the host.
00800 ; When this happens, two different things could happen
00801 ; depending on the host.
00802 ; a) The host could send out a RESET.
00803 ; b) The host could send out a new SETUP transaction
00804 ; without sending a RESET first.
00805 ; To properly handle case (b), the OUT EP must be setup
00806 ; to receive either a zero length OUT transaction, or a
00807 ; new SETUP transaction.
00808 ;
00809 ; Since the SETUP transaction requires the DTS bit to be
00810 ; DAT0 while the zero length OUT status requires the DTS
00811 ; bit to be DAT1, the DTS bit check by the hardware should
00812 ; be disabled. This way the SIE could accept either of
00813 ; the two transactions.
00814 ;
00815 ; Furthermore, the Cnt byte should be set to prepare for
00816 ; the SETUP data (8-byte or more), and the buffer address
00817 ; should be pointed to SetupPkt.
000624 0E40 00818 movlw EP0_BUFF_SIZE
000626 6F01 00819 movwf ep0Bo + Cnt
000628 0E1E 00820 movlw low SetupPkt
00062A 6F02 00821 movwf ep0Bo + ADRL
00062C 0E04 00822 movlw high SetupPkt
00062E 6F03 00823 movwf ep0Bo + ADRH
000630 0E80 00824 movlw _USIE ; Note: DTSEN is 0!
000632 6F00 00825 movwf ep0Bo + Stat
00826 ; 2. Prepare IN EP to transfer data, Cnt should have
00827 ; been initialized by responsible request owner.
000634 0E5E 00828 movlw low CtrlTrfData
000636 6F06 00829 movwf ep0Bi + ADRL
000638 0E04 00830 movlw high CtrlTrfData
00063A 6F07 00831 movwf ep0Bi + ADRH
00063C 0EC8 00832 movlw _USIE|_DAT1|_DTSEN
00063E 6F04 00833 movwf ep0Bi + Stat
000640 D00D 00834 bra USBCtrlEPServiceCompleteExit
00835 ;
00836 ; Setup packet's data direction is "Host to Device"
000642 00837 USBCtrlEPServiceComplete2
000642 0E02 00838 movlw CTRL_TRF_RX
000644 6F16 00839 movwf ctrl_trf_state
00840 ; Control Write:
00841 ; <SETUP[0]><OUT[1]><OUT[0]>...<IN[1]> | <SETUP[0]>
00842 ;
00843 ; 1. Prepare IN EP to respond to early termination
00844 ;
00845 ; This is the same as a Zero Length Packet Response
00846 ; for control transfer without a data stage
000646 6B05 00847 clrf ep0Bi + Cnt
000648 0EC8 00848 movlw _USIE|_DAT1|_DTSEN
00064A 6F04 00849 movwf ep0Bi + Stat
00850 ; 2. Prepare OUT EP to receive data.
00064C 0E40 00851 movlw EP0_BUFF_SIZE
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 42
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VALUE
00064E 6F01 00852 movwf ep0Bo + Cnt
000650 0E5E 00853 movlw low CtrlTrfData
000652 6F02 00854 movwf ep0Bo + ADRL
000654 0E04 00855 movlw high CtrlTrfData
000656 6F03 00856 movwf ep0Bo + ADRH
000658 0EC8 00857 movlw _USIE|_DAT1|_DTSEN
00065A 6F00 00858 movwf ep0Bo + Stat
00859 ;
00065C 00860 USBCtrlEPServiceCompleteExit
00861 ; PKTDIS bit is set when a Setup Transaction is received.
00862 ; Clear to resume packet processing.
00065C 986D 00863 bcf UCON, PKTDIS
00065E 0012 00864 return
00865
00866
00867 ; From usbctrltrf.c line 490
00868 ;/******************************************************************************
00869 ; * Function: void USBPrepareForNextSetupTrf(void)
00870 ; *
00871 ; * PreCondition: None
00872 ; *
00873 ; * Input: None
00874 ; *
00875 ; * Output: None
00876 ; *
00877 ; * Side Effects: None
00878 ; *
00879 ; * Overview: The routine forces EP0 OUT to be ready for a new Setup
00880 ; * transaction, and forces EP0 IN to be owned by CPU.
00881 ; *
00882 ; * Note: None
00883 ; *****************************************************************************/
000660 00884 USBPrepareForNextSetupTrf
00885 ; movlb high 0x400 ; Point to proper bank
000660 0E00 00886 movlw WAIT_SETUP
000662 6F16 00887 movwf ctrl_trf_state
000664 0E40 00888 movlw EP0_BUFF_SIZE
000666 6F01 00889 movwf ep0Bo + Cnt
000668 0E1E 00890 movlw low SetupPkt
00066A 6F02 00891 movwf ep0Bo + ADRL
00066C 0E04 00892 movlw high SetupPkt
00066E 6F03 00893 movwf ep0Bo + ADRH
000670 0E88 00894 movlw _USIE|_DAT0|_DTSEN ; EP0 buff dsc init
000672 6F00 00895 movwf ep0Bo + Stat
000674 0E00 00896 movlw _UCPU ; EP0 IN buffer initialization
000676 6F04 00897 movwf ep0Bi + Stat
000678 0012 00898 return
00899
00900
00901
00902 ; From usbdrv.c line ???
00903 ;/******************************************************************************
00904 ; * Function: void InitializeUSBDriver(void)
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 43
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VALUE
00905 ; *
00906 ; * PreCondition: None
00907 ; *
00908 ; * Input: None
00909 ; *
00910 ; * Output: None
00911 ; *
00912 ; * Side Effects: None
00913 ; *
00914 ; * Overview: This routine initializes variables used by the USB library
00915 ; * routines.
00916 ; *
00917 ; * Note: None
00918 ; *****************************************************************************/
00067A 00919 InitializeUSBDriver
00067A 0104 00920 movlb high 0x400 ; Point to proper bank
00067C 0E14 00921 movlw UCFG_VAL
00067E 6E6F 00922 movwf UCFG
000680 0E00 00923 movlw DETACHED_STATE
000682 6F1A 00924 movwf usb_device_state
000684 6B1D 00925 clrf usb_stat
000686 6B1B 00926 clrf usb_active_cfg
00927 #ifdef USB_USE_HID
000688 D8D9 00928 rcall HIDInitEP
00929 #endif
00930 #ifdef USB_USE_CDC
00931 rcall CDCInitEP
00932 #endif
00068A 0012 00933 return
00934
00935
00936 ; From usbdrv.c line 76
00937 ;/******************************************************************************
00938 ; * Function: void USBCheckBusStatus(void)
00939 ; *
00940 ; * PreCondition: None
00941 ; *
00942 ; * Input: None
00943 ; *
00944 ; * Output: None
00945 ; *
00946 ; * Side Effects: None
00947 ; *
00948 ; * Overview: This routine enables/disables the USB module by monitoring
00949 ; * the USB power signal.
00950 ; *
00951 ; * Note: None
00952 ; *****************************************************************************/
00068C 00953 USBCheckBusStatus
00068C 0104 00954 movlb high 0x400 ; Point to proper bank
00955 ; Bus Attachment & Detachment Detection
00956 ; usb_bus_sense is an i/o pin defined in io_cfg.h
00957 #ifdef USE_USB_BUS_SENSE_IO
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 44
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00958 btfss usb_bus_sense ; Is USB bus attached?
00959 bra USBCheckBusStatusDetached ; No
00960 #endif
00068E A66D 00961 btfss UCON, USBEN ; Is the module off?
000690 D80C 00962 rcall USBModuleEnable ; Is off, enable it
00963 #ifdef USE_USB_BUS_SENSE_IO
00964 bra USBCheckBusStatus1
00965 USBCheckBusStatusDetached
00966 btfsc UCON, USBEN ; Is the module on?
00967 rcall USBModuleDisable ; Is on, disable it
00968 #endif
00969 ;
00970 ; After enabling the USB module, it takes some time for the voltage
00971 ; on the D+ or D- line to rise high enough to get out of the SE0 condition.
00972 ; The USB Reset interrupt should not be unmasked until the SE0 condition is
00973 ; cleared. This helps preventing the firmware from misinterpreting this
00974 ; unique event as a USB bus reset from the USB host.
000692 00975 USBCheckBusStatus1
000692 0E01 00976 movlw ATTACHED_STATE
000694 631A 00977 cpfseq usb_device_state
000696 0012 00978 return
000698 BA6D 00979 btfsc UCON, SE0
00069A 0012 00980 return
00069C 6A68 00981 clrf UIR ; Clear all USB interrupts
00069E 6A69 00982 clrf UIE ; Mask all USB interrupts
0006A0 8069 00983 bsf UIE, URSTIE ; Unmask RESET interrupt
0006A2 8869 00984 bsf UIE, IDLEIE ; Unmask IDLE interrupt
0006A4 0E02 00985 movlw POWERED_STATE
0006A6 6F1A 00986 movwf usb_device_state
0006A8 0012 00987 return
00988
00989
00990 ; From usbdrv.c line 135
0006AA 00991 USBModuleEnable
00992 ; movlb high 0x400 ; Point to proper bank
0006AA 6A6D 00993 clrf UCON
0006AC 6A69 00994 clrf UIE ; Mask all USB interrupts
0006AE 866D 00995 bsf UCON, USBEN ; Enable module & attach to bus
0006B0 0E01 00996 movlw ATTACHED_STATE
0006B2 6F1A 00997 movwf usb_device_state
0006B4 0012 00998 return
00999
01000
01001 ; From usbdrv.c line 192
0006B6 01002 USBSoftDetach
01003 ; From usbdrv.c line 161
0006B6 01004 USBModuleDisable
0006B6 0104 01005 movlb high 0x400 ; Point to proper bank
0006B8 6A6D 01006 clrf UCON ; Disable module & detach from bus
0006BA 6A69 01007 clrf UIE ; Mask all USB interrupts
0006BC 0E00 01008 movlw DETACHED_STATE
0006BE 6F1A 01009 movwf usb_device_state
0006C0 0012 01010 return
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 45
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VALUE
01011
01012
01013 ; From usbdrv.c line 215
01014 ;/******************************************************************************
01015 ; * Function: void USBDriverService(void)
01016 ; *
01017 ; * PreCondition: None
01018 ; *
01019 ; * Input: None
01020 ; *
01021 ; * Output: None
01022 ; *
01023 ; * Side Effects: None
01024 ; *
01025 ; * Overview: This routine is the heart of this firmware. It manages
01026 ; * all USB interrupts.
01027 ; *
01028 ; * Note: Device state transitions through the following stages:
01029 ; * DETACHED -> ATTACHED -> POWERED -> DEFAULT ->
01030 ; * ADDRESS_PENDING -> ADDRESSED -> CONFIGURED -> READY
01031 ; *****************************************************************************/
0006C2 01032 USBDriverService
0006C2 0104 01033 movlb high 0x400 ; Point to proper bank
0006C4 0E00 01034 movlw DETACHED_STATE
0006C6 5D1A 01035 subwf usb_device_state, W
0006C8 E023 01036 bz USBDriverServiceExit ; Pointless to continue servicing
01037 ; if USB cable is not even attached.
01038 ;
01039 ; Task A: Service USB Activity Interrupt
0006CA A468 01040 btfss UIR, ACTVIF
0006CC D002 01041 bra USBDriverService1
0006CE B469 01042 btfsc UIE, ACTVIE
0006D0 D824 01043 rcall USBWakeFromSuspend
01044 ;
0006D2 01045 USBDriverService1
0006D2 B26D 01046 btfsc UCON, SUSPND ; Are we suspended?
0006D4 0012 01047 return ; Pointless to continue servicing if the device is in suspend mo
de.
01048 ;
01049 ; Task B: Service USB Bus Reset Interrupt.
01050 ; When bus reset is received during suspend, ACTVIF will be set first,
01051 ; once the UCONbits.SUSPND is clear, then the URSTIF bit will be asserted.
01052 ; This is why URSTIF is checked after ACTVIF.
01053 ;
01054 ; The USB reset flag is masked when the USB state is in
01055 ; DETACHED_STATE or ATTACHED_STATE, and therefore cannot
01056 ; cause a USB reset event during these two states.
0006D6 A068 01057 btfss UIR, URSTIF ; USB Bus Reset Interrupt?
0006D8 D002 01058 bra USBDriverService2
0006DA B069 01059 btfsc UIE, URSTIE
0006DC D839 01060 rcall USBProtocolResetHandler
01061 ;
01062 ; Task C: Check & service other USB interrupts
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 46
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VALUE
0006DE 01063 USBDriverService2
0006DE A868 01064 btfss UIR, IDLEIF
0006E0 D002 01065 bra USBDriverService3
0006E2 B869 01066 btfsc UIE, IDLEIE
0006E4 D816 01067 rcall USBSuspend
0006E6 01068 USBDriverService3
0006E6 AC68 01069 btfss UIR, SOFIF
0006E8 D002 01070 bra USBDriverService4
0006EA BC69 01071 btfsc UIE, SOFIE
0006EC D828 01072 rcall USB_SOF_Handler
0006EE 01073 USBDriverService4
0006EE AA68 01074 btfss UIR, STALLIF
0006F0 D002 01075 bra USBDriverService5
0006F2 BA69 01076 btfsc UIE, STALLIE
0006F4 D826 01077 rcall USBStallHandler
0006F6 01078 USBDriverService5
0006F6 A268 01079 btfss UIR, UERRIF
0006F8 D002 01080 bra USBDriverService6
0006FA B269 01081 btfsc UIE, UERRIE
0006FC D827 01082 rcall USBErrorHandler
01083 ;
01084 ; Pointless to continue servicing if the host has not sent a bus reset.
01085 ; Once bus reset is received, the device transitions into the DEFAULT
01086 ; * state and is ready for communication.
0006FE 01087 USBDriverService6
0006FE 0E03 01088 movlw DEFAULT_STATE
000700 5D1A 01089 subwf usb_device_state, W
000702 E306 01090 bnc USBDriverServiceExit
01091 ;
01092 ; Task D: Servicing USB Transaction Complete Interrupt
000704 A668 01093 btfss UIR, TRNIF
000706 D004 01094 bra USBDriverServiceExit
000708 A669 01095 btfss UIE, TRNIE
00070A D002 01096 bra USBDriverServiceExit
01097 ;
01098 ; USBCtrlEPService only services transactions over EP0.
01099 ; It ignores all other EP transactions.
00070C DEDF 01100 rcall USBCtrlEPService
01101 ; Other EPs can be serviced later by responsible device class firmware.
01102 ; Each device driver knows when an OUT or IN transaction is ready by
01103 ; checking the buffer ownership bit.
01104 ; An OUT EP should always be owned by SIE until the data is ready.
01105 ; An IN EP should always be owned by CPU until the data is ready.
01106 ;
01107 ; Because of this logic, it is not necessary to save the USTAT value
01108 ; of non-EP0 transactions.
00070E 9668 01109 bcf UIR, TRNIF
000710 01110 USBDriverServiceExit
000710 0012 01111 return
01112
01113
01114 ; From usbdrv.c line 301
01115 ;/******************************************************************************
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 47
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VALUE
01116 ; * Function: void USBSuspend(void)
01117 ; *
01118 ; * PreCondition: None
01119 ; *
01120 ; * Input: None
01121 ; *
01122 ; * Output: None
01123 ; *
01124 ; * Side Effects: None
01125 ; *
01126 ; * Overview:
01127 ; *
01128 ; * Note: None
01129 ; *****************************************************************************/
000712 01130 USBSuspend
01131 ; NOTE: Do not clear UIRbits.ACTVIF here!
01132 ; Reason:
01133 ; ACTVIF is only generated once an IDLEIF has been generated.
01134 ; This is a 1:1 ratio interrupt generation.
01135 ; For every IDLEIF, there will be only one ACTVIF regardless of
01136 ; the number of subsequent bus transitions.
01137 ;
01138 ; If the ACTIF is cleared here, a problem could occur when:
01139 ; [ IDLE ][bus activity ->
01140 ; <--- 3 ms -----> ^
01141 ; ^ ACTVIF=1
01142 ; IDLEIF=1
01143 ; # # # # (#=Program polling flags)
01144 ; ^
01145 ; This polling loop will see both
01146 ; IDLEIF=1 and ACTVIF=1.
01147 ; However, the program services IDLEIF first
01148 ; because ACTIVIE=0.
01149 ; If this routine clears the only ACTIVIF,
01150 ; then it can never get out of the suspend
01151 ; mode.
000712 8469 01152 bsf UIE, ACTVIE ; Enable bus activity interrupt
000714 9868 01153 bcf UIR, IDLEIF
000716 826D 01154 bsf UCON, SUSPND ; Put USB module in power conserve
01155 ; At this point the PIC can go into sleep,idle, or
01156 ; switch to a slower clock, etc.
000718 0012 01157 return
01158
01159
01160 ; From usbdrv.c line 353
01161 ;/******************************************************************************
01162 ; * Function: void USBWakeFromSuspend(void)
01163 ; *
01164 ; * PreCondition: None
01165 ; *
01166 ; * Input: None
01167 ; *
01168 ; * Output: None
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 48
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VALUE
01169 ; *
01170 ; * Side Effects: None
01171 ; *
01172 ; * Overview:
01173 ; *
01174 ; * Note: None
01175 ; *****************************************************************************/
00071A 01176 USBWakeFromSuspend
01177 ; If using clock switching, this is the place to restore the
01178 ; original clock frequency.
00071A 926D 01179 bcf UCON, SUSPND
00071C 9469 01180 bcf UIE, ACTVIE
00071E 9468 01181 bcf UIR, ACTVIF
000720 0012 01182 return
01183
01184
01185 ; From usbdrv.c line 402
01186 ;/******************************************************************************
01187 ; * Function: void USBRemoteWakeup(void)
01188 ; *
01189 ; * PreCondition: None
01190 ; *
01191 ; * Input: None
01192 ; *
01193 ; * Output: None
01194 ; *
01195 ; * Side Effects: None
01196 ; *
01197 ; * Overview: This function should be called by user when the device
01198 ; * is waken up by an external stimulus other than ACTIVIF.
01199 ; * Please read the note below to understand the limitations.
01200 ; *
01201 ; * Note: The modifiable section in this routine should be changed
01202 ; * to meet the application needs. Current implementation
01203 ; * temporary blocks other functions from executing for a
01204 ; * period of 1-13 ms depending on the core frequency.
01205 ; *
01206 ; * According to USB 2.0 specification section 7.1.7.7,
01207 ; * "The remote wakeup device must hold the resume signaling
01208 ; * for at lest 1 ms but for no more than 15 ms."
01209 ; * The idea here is to use a delay counter loop, using a
01210 ; * common value that would work over a wide range of core
01211 ; * frequencies.
01212 ; * That value selected is 1800. See table below:
01213 ; * ==========================================================
01214 ; * Core Freq(MHz) MIP RESUME Signal Period (ms)
01215 ; * ==========================================================
01216 ; * 48 12 1.05
01217 ; * 4 1 12.6
01218 ; * ==========================================================
01219 ; * * These timing could be incorrect when using code
01220 ; * optimization or extended instruction mode,
01221 ; * or when having other interrupts enabled.
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 49
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VALUE
01222 ; * Make sure to verify using the MPLAB SIM's Stopwatch
01223 ; *****************************************************************************/
000722 01224 USBRemoteWakeup
000722 0104 01225 movlb high 0x400 ; Point to proper bank
000724 A11D 01226 btfss usb_stat, RemoteWakeup ; Check if RemoteWakeup function has been enabled by the host.
000726 0012 01227 return ; No
000728 DFF8 01228 rcall USBWakeFromSuspend ; Unsuspend USB modue
00072A 846D 01229 bsf UCON, RESUME ; Start RESUME signaling
00072C 0E10 01230 movlw 0x10 ; Set RESUME line for 1-13 ms
00072E 6EDA 01231 movwf FSR2H ; Using FSR2 as temp
000730 6AD9 01232 clrf FSR2L
000732 01233 USBRemoteWakeupLoop
000732 2ED9 01234 decfsz FSR2L, F
000734 D7FE 01235 bra USBRemoteWakeupLoop
000736 2EDA 01236 decfsz FSR2H, F
000738 D7FC 01237 bra USBRemoteWakeupLoop
00073A 946D 01238 bcf UCON, RESUME
00073C 0012 01239 return
01240
01241
01242 ; From usbdrv.c line 443
01243 ;/******************************************************************************
01244 ; * Function: void USB_SOF_Handler(void)
01245 ; *
01246 ; * PreCondition: None
01247 ; *
01248 ; * Input: None
01249 ; *
01250 ; * Output: None
01251 ; *
01252 ; * Side Effects: None
01253 ; *
01254 ; * Overview: The USB host sends out a SOF packet to full-speed devices
01255 ; * every 1 ms. This interrupt may be useful for isochronous
01256 ; * pipes. End designers should implement callback routine
01257 ; * as necessary.
01258 ; *
01259 ; * Note: None
01260 ; *****************************************************************************/
00073E 01261 USB_SOF_Handler
01262 ; Callback routine here
00073E 9C68 01263 bcf UIR, SOFIF
000740 0012 01264 return
01265
01266
01267 ; From usbdrv.c line 486
01268 ;/******************************************************************************
01269 ; * Function: void USBStallHandler(void)
01270 ; *
01271 ; * PreCondition: A STALL packet is sent to the host by the SIE.
01272 ; *
01273 ; * Input: None
01274 ; *
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 50
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VALUE
01275 ; * Output: None
01276 ; *
01277 ; * Side Effects: None
01278 ; *
01279 ; * Overview: The STALLIF is set anytime the SIE sends out a STALL
01280 ; * packet regardless of which endpoint causes it.
01281 ; * A Setup transaction overrides the STALL function. A stalled
01282 ; * endpoint stops stalling once it receives a setup packet.
01283 ; * In this case, the SIE will accepts the Setup packet and
01284 ; * set the TRNIF flag to notify the firmware. STALL function
01285 ; * for that particular endpoint pipe will be automatically
01286 ; * disabled (direction specific).
01287 ; *
01288 ; * There are a few reasons for an endpoint to be stalled.
01289 ; * 1. When a non-supported USB request is received.
01290 ; * Example: GET_DESCRIPTOR(DEVICE_QUALIFIER)
01291 ; * 2. When an endpoint is currently halted.
01292 ; * 3. When the device class specifies that an endpoint must
01293 ; * stall in response to a specific event.
01294 ; * Example: Mass Storage Device Class
01295 ; * If the CBW is not valid, the device shall
01296 ; * STALL the Bulk-In pipe.
01297 ; * See USB Mass Storage Class Bulk-only Transport
01298 ; * Specification for more details.
01299 ; *
01300 ; * Note: UEPn.EPSTALL can be scanned to see which endpoint causes
01301 ; * the stall event.
01302 ; * If
01303 ; *****************************************************************************/
000742 01304 USBStallHandler
01305 ; Does not really have to do anything here,
01306 ; even for the control endpoint.
01307 ; All BDs of Endpoint 0 are owned by SIE right now,
01308 ; but once a Setup Transaction is received, the ownership
01309 ; for EP0_OUT will be returned to CPU.
01310 ; When the Setup Transaction is serviced, the ownership
01311 ; for EP0_IN will then be forced back to CPU by firmware.
01312 ;
01313 ; NOTE: Above description is not quite true at this point.
01314 ; It seems the SIE never returns the UOWN bit to CPU,
01315 ; and a TRNIF is never generated upon successful
01316 ; reception of a SETUP transaction.
01317 ; Firmware work-around is implemented below.
01318 ;
000742 B070 01319 btfsc UEP0, EPSTALL
000744 DF8D 01320 rcall USBPrepareForNextSetupTrf ; Firmware Work-Around
000746 9070 01321 bcf UEP0, EPSTALL
000748 9A68 01322 bcf UIR, STALLIF
00074A 0012 01323 return
01324
01325 ; From usbdrv.c line 528
01326 ;/******************************************************************************
01327 ; * Function: void USBErrorHandler(void)
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 51
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VALUE
01328 ; *
01329 ; * PreCondition: None
01330 ; *
01331 ; * Input: None
01332 ; *
01333 ; * Output: None
01334 ; *
01335 ; * Side Effects: None
01336 ; *
01337 ; * Overview: The purpose of this interrupt is mainly for debugging
01338 ; * during development. Check UEIR to see which error causes
01339 ; * the interrupt.
01340 ; *
01341 ; * Note: None
01342 ; *****************************************************************************/
00074C 01343 USBErrorHandler
00074C 9268 01344 bcf UIR, UERRIF
00074E 0012 01345 return
01346
01347
01348 ; From usbdrv.c line 555
01349 ;/******************************************************************************
01350 ; * Function: void USBProtocolResetHandler(void)
01351 ; *
01352 ; * PreCondition: A USB bus reset is received from the host.
01353 ; *
01354 ; * Input: None
01355 ; *
01356 ; * Output: None
01357 ; *
01358 ; * Side Effects: Currently, this routine flushes any pending USB
01359 ; * transactions. It empties out the USTAT FIFO. This action
01360 ; * might not be desirable in some applications.
01361 ; *
01362 ; * Overview: Once a USB bus reset is received from the host, this
01363 ; * routine should be called. It resets the device address to
01364 ; * zero, disables all non-EP0 endpoints, initializes EP0 to
01365 ; * be ready for default communication, clears all USB
01366 ; * interrupt flags, unmasks applicable USB interrupts, and
01367 ; * reinitializes internal state-machine variables.
01368 ; *
01369 ; * Note: None
01370 ; *****************************************************************************/
000750 01371 USBProtocolResetHandler
01372 ; movlb high 0x400 ; Point to proper bank
000750 6A6A 01373 clrf UEIR ; Clear all USB error flags
000752 6A68 01374 clrf UIR ; Clears all USB interrupts
000754 0E9F 01375 movlw 0x9f ; Unmask all USB error interrupts
000756 6E6B 01376 movwf UEIE
000758 0E7B 01377 movlw 0x7b ; Enable all interrupts except ACTVIE
00075A 6E69 01378 movwf UIE
00075C 6A6E 01379 clrf UADDR ; Reset to default address
00075E EE2F F071 01380 lfsr 2, UEP1 ; Reset all non-EP0 UEPn registers
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 52
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VALUE
000762 0E0F 01381 movlw 15
000764 01382 USBProtocolResetHandlerClearLoop
000764 6ADE 01383 clrf POSTINC2
000766 2EE8 01384 decfsz WREG, F
000768 D7FD 01385 bra USBProtocolResetHandlerClearLoop
00076A 0E16 01386 movlw EP_CTRL|HSHK_EN ; Init EP0 as a Ctrl EP
00076C 6E70 01387 movwf UEP0
00076E B668 01388 btfsc UIR, TRNIF ; Flush any pending transactions
000770 01389 USBProtocolResetHandlerFlushLoop
000770 9668 01390 bcf UIR, TRNIF
000772 B668 01391 btfsc UIR, TRNIF
000774 D7FD 01392 bra USBProtocolResetHandlerFlushLoop
000776 986D 01393 bcf UCON, PKTDIS ; Make sure packet processing is enabled
000778 DF73 01394 rcall USBPrepareForNextSetupTrf
00077A 911D 01395 bcf usb_stat, RemoteWakeup ; Default status flag to disable
00077C 6B1B 01396 clrf usb_active_cfg ; Clear active configuration
00077E 0E03 01397 movlw DEFAULT_STATE
000780 6F1A 01398 movwf usb_device_state
000782 0012 01399 return
01400
01401
01402
01403 #ifdef USB_USE_HID
01404
01405 ; From hid.c line 72
01406 ;/******************************************************************************
01407 ; * Function: void USBCheckHIDRequest(void)
01408 ; *
01409 ; * PreCondition: None
01410 ; *
01411 ; * Input: None
01412 ; *
01413 ; * Output: None
01414 ; *
01415 ; * Side Effects: None
01416 ; *
01417 ; * Overview: This routine checks the setup data packet to see if it
01418 ; * knows how to handle it
01419 ; *
01420 ; * Note: None
01421 ; *****************************************************************************/
000784 01422 USBCheckHIDRequest
000784 0104 01423 movlb high 0x400 ; Point to proper bank
000786 511E 01424 movf SetupPkt, W ; Recipient = RCPT_INTF?
000788 0B1F 01425 andlw 0x1f ; Mask to lower 5 bits
00078A 0801 01426 sublw RCPT_INTF
00078C E102 01427 bnz USBCheckHIDRequestExit ; No
00078E 0E00 01428 movlw HID_INTF_ID ; IntfID = HID_INTF_ID?
000790 6322 01429 cpfseq SetupPkt + bIntfID
000792 01430 USBCheckHIDRequestExit
000792 0012 01431 return ; No
01432 ;
01433 ; There are two standard requests that hid.c may support.
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 53
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VALUE
01434 ; 1. GET_DSC(DSC_HID,DSC_RPT,DSC_PHY);
01435 ; 2. SET_DSC(DSC_HID,DSC_RPT,DSC_PHY);
01436 ;
000794 0E06 01437 movlw GET_DSC ; Request = GET_DSC?
000796 631F 01438 cpfseq SetupPkt + bRequest
000798 D027 01439 bra USBCheckHIDRequestClass ; No
00079A 0E21 01440 movlw DSC_HID ; DscType = DSC_HID?
00079C 6321 01441 cpfseq SetupPkt + bDscType
00079E D00F 01442 bra USBCheckHIDRequest1 ; No
01443 mSetSourcePointer HIDDescriptor1
0007A0 0EFE M movlw low (HIDDescriptor1)
0007A2 6F12 M movwf pSrc
0007A4 0E01 M movlw high (HIDDescriptor1)
0007A6 6F13 M movwf pSrc + 1
01444 mGetRomTableCount ; Set wCount
0007A8 C412 FFF6 M movff pSrc, TBLPTRL ; Set source address
0007AC C413 FFF7 M movff pSrc + 1, TBLPTRH
0007B0 6AF8 M clrf TBLPTRU
0007B2 0008 M tblrd * ; Read count
0007B4 CFF5 F418 M movff TABLAT, wCount
0007B8 6B19 M clrf wCount + 1
0007BA 831D 01445 bsf usb_stat, ctrl_trf_mem ; Indicate ROM
0007BC D03C 01446 bra USBHIDSetSessionOwner
0007BE 01447 USBCheckHIDRequest1
0007BE 0E22 01448 movlw DSC_RPT ; DscType = DSC_RPT?
0007C0 6321 01449 cpfseq SetupPkt + bDscType
0007C2 D012 01450 bra USBCheckHIDRequest2 ; No
01451 mSetSourcePointer ReportDescriptor1
0007C4 0E2C M movlw low (ReportDescriptor1)
0007C6 6F12 M movwf pSrc
0007C8 0E02 M movlw high (ReportDescriptor1)
0007CA 6F13 M movwf pSrc + 1
0007CC 0E0C 01452 movlw low (ReportDescriptor1Len) ; Set wCount
0007CE 6EF6 01453 movwf TBLPTRL
0007D0 0E02 01454 movlw high (ReportDescriptor1Len)
0007D2 6EF7 01455 movwf TBLPTRH
0007D4 6AF8 01456 clrf TBLPTRU
0007D6 0009 01457 tblrd *+ ; Read count low
0007D8 CFF5 F418 01458 movff TABLAT, wCount
0007DC 0009 01459 tblrd *+ ; Skip next
0007DE 0008 01460 tblrd * ; Read count high
0007E0 CFF5 F419 01461 movff TABLAT, wCount + 1
0007E4 831D 01462 bsf usb_stat, ctrl_trf_mem ; Indicate ROM
0007E6 D027 01463 bra USBHIDSetSessionOwner
0007E8 01464 USBCheckHIDRequest2
01465 ; movlw DSC_PHY ; DscType = DSC_PHY?
01466 ; cpfseq SetupPkt + bDscType
01467 ; return ; No
0007E8 01468 USBCheckHIDRequestClass
0007E8 511E 01469 movf SetupPkt, W ; RequestType = CLASS?
0007EA 0B60 01470 andlw 0x60 ; Mask to proper bits
0007EC 0820 01471 sublw (CLASS) << 5
0007EE E1D1 01472 bnz USBCheckHIDRequestExit ; No
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 54
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VALUE
01473 ; movlw GET_REPORT ; Request = GET_REPORT?
01474 ; subwf SetupPkt + bRequest, W
01475 ; bz HIDGetReportHandler ; Yes
01476 ; movlw SET_REPORT ; Request = SET_REPORT?
01477 ; subwf SetupPkt + bRequest, W
01478 ; bz HIDSetReportHandler ; Yes
0007F0 0E02 01479 movlw GET_IDLE ; Request = GET_IDLE?
0007F2 631F 01480 cpfseq SetupPkt + bRequest
0007F4 D009 01481 bra USBCheckHIDRequestClass1 ; No
01482 mSetSourcePointer idle_rate
0007F6 0E9E M movlw low (idle_rate)
0007F8 6F12 M movwf pSrc
0007FA 0E04 M movlw high (idle_rate)
0007FC 6F13 M movwf pSrc + 1
0007FE 0E01 01483 movlw 1
000800 6F18 01484 movwf wCount
000802 6B19 01485 clrf wCount + 1
000804 931D 01486 bcf usb_stat, ctrl_trf_mem ; Indicate RAM
000806 D017 01487 bra USBHIDSetSessionOwner
000808 01488 USBCheckHIDRequestClass1
000808 0E0A 01489 movlw SET_IDLE ; Request = SET_IDLE?
00080A 631F 01490 cpfseq SetupPkt + bRequest
00080C D003 01491 bra USBCheckHIDRequestClass2 ; No
00080E C421 F49E 01492 movff SetupPkt + wValue + 1, idle_rate
000812 D011 01493 bra USBHIDSetSessionOwner
000814 01494 USBCheckHIDRequestClass2
000814 0E03 01495 movlw GET_PROTOCOL ; Request = GET_PROTOCOL?
000816 631F 01496 cpfseq SetupPkt + bRequest
000818 D009 01497 bra USBCheckHIDRequestClass3 ; No
01498 mSetSourcePointer active_protocol
00081A 0E9F M movlw low (active_protocol)
00081C 6F12 M movwf pSrc
00081E 0E04 M movlw high (active_protocol)
000820 6F13 M movwf pSrc + 1
000822 0E01 01499 movlw 1
000824 6F18 01500 movwf wCount
000826 6B19 01501 clrf wCount + 1
000828 931D 01502 bcf usb_stat, ctrl_trf_mem ; Indicate RAM
00082A D005 01503 bra USBHIDSetSessionOwner
00082C 01504 USBCheckHIDRequestClass3
00082C 0E0B 01505 movlw SET_PROTOCOL ; Request = SET_PROTOCOL?
00082E 631F 01506 cpfseq SetupPkt + bRequest
000830 0012 01507 return ; No
000832 C420 F49F 01508 movff SetupPkt + wValue, active_protocol
000836 01509 USBHIDSetSessionOwner
000836 0E02 01510 movlw MUID_HID
000838 6F17 01511 movwf ctrl_trf_session_owner
00083A 0012 01512 return
01513
01514
01515 ; From hid.c line 158
01516 ;/******************************************************************************
01517 ; * Function: void HIDInitEP(void)
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 55
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VALUE
01518 ; *
01519 ; * PreCondition: None
01520 ; *
01521 ; * Input: None
01522 ; *
01523 ; * Output: None
01524 ; *
01525 ; * Side Effects: None
01526 ; *
01527 ; * Overview: HIDInitEP initializes HID endpoints, buffer descriptors,
01528 ; * internal state-machine, and variables.
01529 ; * It should be called after the USB host has sent out a
01530 ; * SET_CONFIGURATION request.
01531 ; * See USBStdSetCfgHandler() in usb9.c for examples.
01532 ; *
01533 ; * Note: None
01534 ; *****************************************************************************/
00083C 01535 HIDInitEP
00083C 0E01 01536 movlw 1 ; Endpoint 1 Out
00083E 6EE9 01537 movwf FSR0L
000840 EE14 F0A0 01538 lfsr 1, hid_report_out ; FSR1 = endpoint buffer address
000844 0E40 01539 movlw HID_INT_OUT_EP_SIZE ; W = endpoint size
000846 D81C 01540 rcall InitEPOut ; Inititalize the endpoint
01541
000848 0E01 01542 movlw 1 ; Endpoint 1 In
00084A 6EE9 01543 movwf FSR0L
00084C EE14 F0E1 01544 lfsr 1, hid_report_in ; FSR1 = endpoint buffer address
000850 0E40 01545 movlw HID_INT_IN_EP_SIZE ; W = endpoint size
000852 D000 01546 bra InitEPIn ; Inititalize the endpoint
01547
01548 #endif ; USB_USE_HID
01549
01550
01551
01552 #ifdef USB_USE_CDC
01553
01554 ;/******************************************************************************
01555 ; * Function: void USBCheckCDCRequest(void)
01556 ; *
01557 ; * PreCondition: None
01558 ; *
01559 ; * Input: None
01560 ; *
01561 ; * Output: None
01562 ; *
01563 ; * Side Effects: None
01564 ; *
01565 ; * Overview: This routine checks the setup data packet to see if it
01566 ; * knows how to handle it
01567 ; *
01568 ; * Note: None
01569 ; *****************************************************************************/
01570 USBCheckCDCRequest
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 56
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VALUE
01571 ; /*
01572 ; * If request recipient is not an interface then return
01573 ; */
01574 movlb high 0x400 ; Point to proper bank
01575 movf SetupPkt, W ; Recipient = RCPT_INTF?
01576 andlw 0x1f ; Mask to lower 5 bits
01577 sublw RCPT_INTF
01578 bnz USBCheckCDCRequestExit ; No
01579
01580 ; /*
01581 ; * If request type is not class-specific then return
01582 ; */
01583 movf SetupPkt, W ; RequestType = CLASS?
01584 andlw 0x60 ; Mask to proper bits
01585 sublw (CLASS) << 5
01586 bnz USBCheckCDCRequestExit ; No
01587
01588 ; /*
01589 ; * Interface ID must match interface numbers associated with
01590 ; * CDC class, else return
01591 ; */
01592 movlw CDC_COMM_INTF_ID ; IntfID = CDC_COMM_INTF_ID?
01593 subwf SetupPkt + bIntfID, W
01594 bz USBCheckCDCRequest1 ; Yes
01595 movlw CDC_DATA_INTF_ID ; IntfID = CDC_DATA_INTF_ID?
01596 cpfseq SetupPkt + bIntfID
01597 USBCheckCDCRequestExit
01598 return ; No
01599
01600 USBCheckCDCRequest1
01601 movlw SEND_ENCAPSULATED_COMMAND ; Request = SEND_ENCAPSULATED_COMMAND?
01602 cpfseq SetupPkt + bRequest
01603 bra USBCheckCDCRequest2 ; No
01604 mSetSourcePointer dummy_encapsulated_cmd_response
01605 bcf usb_stat, ctrl_trf_mem ; Indicate RAM
01606 movlw dummy_length
01607 movwf wCount
01608 clrf wCount + 1
01609 bra USBCDCSetSessionOwner
01610 USBCheckCDCRequest2
01611 movlw GET_ENCAPSULATED_RESPONSE ; Request = GET_ENCAPSULATED_RESPONSE?
01612 cpfseq SetupPkt + bRequest
01613 bra USBCheckCDCRequest3 ; No
01614 ; // Populate dummy_encapsulated_cmd_response first.
01615 mSetDestinationPointer dummy_encapsulated_cmd_response
01616 bra USBCDCSetSessionOwner
01617 USBCheckCDCRequest3
01618 movlw SET_COMM_FEATURE ; Request = SET_COMM_FEATURE?
01619 cpfseq SetupPkt + bRequest
01620 bra USBCheckCDCRequest4 ; No
01621 return ; Optional
01622 USBCheckCDCRequest4
01623 movlw GET_COMM_FEATURE ; Request = GET_COMM_FEATURE?
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 57
LOC OBJECT CODE LINE SOURCE TEXT
VALUE
01624 cpfseq SetupPkt + bRequest
01625 bra USBCheckCDCRequest5 ; No
01626 return ; Optional
01627 USBCheckCDCRequest5
01628 movlw CLEAR_COMM_FEATURE ; Request = CLEAR_COMM_FEATURE?
01629 cpfseq SetupPkt + bRequest
01630 bra USBCheckCDCRequest6 ; No
01631 return ; Optional
01632 USBCheckCDCRequest6
01633 movlw SET_LINE_CODING ; Request = SET_LINE_CODING?
01634 cpfseq SetupPkt + bRequest
01635 bra USBCheckCDCRequest7 ; No
01636 mSetDestinationPointer line_coding
01637 bra USBCDCSetSessionOwner
01638 USBCheckCDCRequest7
01639 movlw GET_LINE_CODING ; Request = GET_LINE_CODING?
01640 cpfseq SetupPkt + bRequest
01641 bra USBCheckCDCRequest8 ; No
01642 ; Abstract line coding information
01643 movlw low 115200 ; baud rate
01644 movwf line_coding + dwDTERate
01645 movlw high 115200
01646 movwf line_coding + dwDTERate + 1
01647 movlw upper 115200
01648 movwf line_coding + dwDTERate + 2
01649 clrf line_coding + dwDTERate + 3
01650 clrf line_coding + bCharFormat ; 1 stop bit
01651 clrf line_coding + bParityType ; None
01652 movlw 8
01653 movwf line_coding + bDataBits ; 5,6,7,8, or 16
01654 mSetSourcePointer line_coding
01655 bcf usb_stat, ctrl_trf_mem ; Indicate RAM
01656 movlw LINE_CODING_LENGTH
01657 movwf wCount
01658 clrf wCount + 1
01659 bra USBCDCSetSessionOwner
01660 USBCheckCDCRequest8
01661 movlw SET_CONTROL_LINE_STATE ; Request = SET_CONTROL_LINE_STATE?
01662 cpfseq SetupPkt + bRequest
01663 bra USBCheckCDCRequest9 ; No
01664 movff SetupPkt + wValue, control_signal_bitmap
01665 bra USBCDCSetSessionOwner
01666 USBCheckCDCRequest9
01667 movlw SEND_BREAK ; Request = SEND_BREAK?
01668 cpfseq SetupPkt + bRequest
01669 bra USBCheckCDCRequest10 ; No
01670 return ; Optional
01671 USBCheckCDCRequest10
01672 return ; Default
01673 USBCDCSetSessionOwner
01674 movlw MUID_CDC
01675 movwf ctrl_trf_session_owner
01676 return
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 58
LOC OBJECT CODE LINE SOURCE TEXT
VALUE
01677
01678
01679 ;/******************************************************************************
01680 ; * Function: void CDCInitEP(void)
01681 ; *
01682 ; * PreCondition: None
01683 ; *
01684 ; * Input: None
01685 ; *
01686 ; * Output: None
01687 ; *
01688 ; * Side Effects: None
01689 ; *
01690 ; * Overview: CDCInitEP initializes CDC endpoints, buffer descriptors,
01691 ; * internal state-machine, and variables.
01692 ; * It should be called after the USB host has sent out a
01693 ; * SET_CONFIGURATION request.
01694 ; * See USBStdSetCfgHandler() in usb9.c for examples.
01695 ; *
01696 ; * Note: None
01697 ; *****************************************************************************/
01698 CDCInitEP
01699 movlw 2 ; Endpoint 2 In
01700 movwf FSR0L
01701 lfsr 1, cdc_notice ; FSR1 = endpoint buffer address
01702 movlw CDC_INT_EP_SIZE ; W = endpoint size
01703 rcall InitEPIn ; Inititalize the endpoint
01704
01705 movlw 3 ; Endpoint 3
01706 movwf FSR0L
01707 lfsr 1, cdc_data_rx ; FSR1 = endpoint buffer address
01708 movlw CDC_BULK_OUT_EP_SIZE ; W = endpoint size
01709 rcall InitEPOut ; Inititalize the endpoint
01710
01711 movlw 3 ; Endpoint 3 In
01712 movwf FSR0L
01713 lfsr 1, cdc_data_tx ; FSR1 = endpoint buffer address
01714 movlw CDC_BULK_IN_EP_SIZE ; W = endpoint size
01715 bra InitEPIn ; Inititalize the endpoint
01716
01717 #endif ; USB_USE_CDC
01718
01719
01720 ; Generic code for use by all the classes
01721
01722 ; InitEPIn
01723 ; Generic initialize In endpoint
01724 ; Input:
01725 ; FSR0L is endpoint number
01726 ; FSR1 is endpoint buffer address
01727 ; W is endpoint buffer size
01728 ; Returns:
01729 ; Nada
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 59
LOC OBJECT CODE LINE SOURCE TEXT
VALUE
01730 ; Uses
01731 ; FSR0 is BDT pointer
01732 ; FSR1 is endpoint buffer pointer
01733 ; FSR2 is endpoint table pointer
01734
000854 01735 InitEPIn
01736 ; Save maximum count at front of endpoint buffer and move buffer pointer up (no need to put in Cnt for I
n)
000854 6EE6 01737 movwf POSTINC1 ; Store maximum count at front of endpoint buffer and move up po
inter
01738
01739 ; Point FSR2 to endpoint table
000856 EE2F F070 01740 lfsr 2, UEP0
00085A 50E9 01741 movf FSR0L, W ; Add in endpoint number
00085C 26D9 01742 addwf FSR2L, F
01743
01744 ; Enable In endpoint
00085E 0E1A 01745 movlw EP_IN|HSHK_EN ; Enable In pipe
000860 12DF 01746 iorwf INDF2, F
01747
01748 ; Point FSR0 to endpoint BDT
000862 44E9 01749 rlncf FSR0L, W ; Endpoint number * 8
000864 46E8 01750 rlncf WREG, F
000866 46E8 01751 rlncf WREG, F
000868 EE04 F004 01752 lfsr 0, ep0Bi ; Point FSR0 to beginning of BDT area
00086C 26E9 01753 addwf FSR0L, F ; Add endpoint offset to FSR0 (can't overflow to FSR0H)
01754
01755 ; Set endpoint buffer address from FSR1
00086E 0E02 01756 movlw ADRL ; Point to ADRL
000870 CFE1 FFEB 01757 movff FSR1L, PLUSW0
000874 0E03 01758 movlw ADRH ; Point to ADRH
000876 CFE2 FFEB 01759 movff FSR1H, PLUSW0
01760
01761 ; Set endpoint status
00087A 0E40 01762 movlw _UCPU|_DAT1 ; Set transmit status
00087C 6EEF 01763 movwf INDF0 ; Set Stat
00087E 0012 01764 return
01765
01766
01767 ; InitEPOut
01768 ; Generic initialize Out endpoint
01769 ; Input:
01770 ; FSR0L is endpoint number
01771 ; FSR1 is endpoint buffer address
01772 ; W is endpoint buffer size
01773 ; Returns:
01774 ; Nada
01775 ; Uses
01776 ; FSR0 is BDT pointer
01777 ; FSR1 is endpoint buffer pointer
01778 ; FSR2 is endpoint table pointer
01779
000880 01780 InitEPOut
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 60
LOC OBJECT CODE LINE SOURCE TEXT
VALUE
01781 ; Save maximum count at front of endpoint buffer and move buffer pointer up
000880 6EE6 01782 movwf POSTINC1 ; Store maximum count at front of endpoint buffer and move up po
inter
01783
01784 ; Point FSR2 to endpoint table
000882 EE2F F070 01785 lfsr 2, UEP0
000886 50E9 01786 movf FSR0L, W ; Add in endpoint number
000888 26D9 01787 addwf FSR2L, F
01788
01789 ; Enable Out endpoint
00088A 0E1C 01790 movlw EP_OUT|HSHK_EN ; Enable Out pipe
00088C 12DF 01791 iorwf INDF2, F
01792
01793 ; Point FSR0 to endpoint BDT
00088E 44E9 01794 rlncf FSR0L, W ; Endpoint number * 8
000890 46E8 01795 rlncf WREG, F
000892 46E8 01796 rlncf WREG, F
000894 EE04 F000 01797 lfsr 0, ep0Bo ; Point FSR0 to beginning of BDT area
000898 26E9 01798 addwf FSR0L, F ; Add endpoint offset to FSR0 (can't overflow to FSR0H)
01799
01800 ; Set endpoint buffer address from FSR1 + 1
00089A 0E02 01801 movlw ADRL ; Point to ADRL
00089C CFE1 FFEB 01802 movff FSR1L, PLUSW0
0008A0 0E03 01803 movlw ADRH ; Point to ADRH
0008A2 CFE2 FFEB 01804 movff FSR1H, PLUSW0
01805
01806 ; Set Cnt to maximum count
0008A6 50E5 01807 movf POSTDEC1, W ; Back up endpoint buffer pointer (no PREDEC1!)
0008A8 2AE9 01808 incf FSR0L, F ; Point to Cnt
0008AA CFE7 FFED 01809 movff INDF1, POSTDEC0 ; Set maximum count and point back to Stat
01810
01811 ; Set endpoint status
0008AE 0E88 01812 movlw _USIE|_DAT0|_DTSEN ; Set receive status
0008B0 6EEF 01813 movwf INDF0 ; Set Stat
0008B2 0012 01814 return
01815
01816
01817 ; PutUSB
01818 ; Generic fill In endpoint for TX
01819 ; Input:
01820 ; FSR0L is endpoint number
01821 ; FSR1 is source buffer pointer
01822 ; W is count
01823 ; Returns:
01824 ; FSR1 is updated source buffer pointer
01825 ; W returns number sent
01826 ; Carry is clear for buffer not available
01827 ; Uses:
01828 ; FSR0 is BDT pointer
01829 ; FSR1 is source buffer pointer
01830 ; FSR2 is endpoint buffer pointer
01831 ; R0 in BANKA is temporary length storage
01832
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 61
LOC OBJECT CODE LINE SOURCE TEXT
VALUE
0008B4 01833 PutUSB
0008B4 6E01 01834 movwf R0 ; Save count
01835
01836 ; Check to see if we're configured
0008B6 0104 01837 movlb high 0x400 ; Point to proper bank
0008B8 0E06 01838 movlw CONFIGURED_STATE ; We might not be configured yet
0008BA 5D1A 01839 subwf usb_device_state, W
0008BC 0E00 01840 movlw 0 ; 0 characters sent, so far
0008BE 90D8 01841 bcf STATUS, C ; Clear Carry for possible error return
0008C0 E109 01842 bnz PutUSBNotReady ; We're not configured
01843
01844 ; Point FSR0 to requested endpoint In BDT
0008C2 44E9 01845 rlncf FSR0L, W ; Endpoint number * 8
0008C4 46E8 01846 rlncf WREG, F
0008C6 46E8 01847 rlncf WREG, F
0008C8 EE04 F004 01848 lfsr 0, ep0Bi ; Point FSR0 to beginning of BDT area
0008CC 26E9 01849 addwf FSR0L, F ; Add endpoint offset to FSR0 (can't overflow to FSR0H)
01850
0008CE 0E00 01851 movlw 0 ; 0 characters sent, so far
0008D0 90D8 01852 bcf STATUS, C ; Clear Carry for possible error return
0008D2 BEEF 01853 btfsc INDF0, UOWN ; Who owns the buffer (Stat, UOWN)?
0008D4 01854 PutUSBNotReady
0008D4 0012 01855 return ; Busy (we don't)
01856
01857 ; Get endpoint buffer address to FSR2
0008D6 0E02 01858 movlw ADRL ; Point to ADRL
0008D8 CFEB FFD9 01859 movff PLUSW0, FSR2L
0008DC 0E03 01860 movlw ADRH ; Point to ADRH
0008DE CFEB FFDA 01861 movff PLUSW0, FSR2H
01862
0008E2 0EFF 01863 movlw -1
0008E4 50DB 01864 movf PLUSW2, W ; Get maximum length from in front of endpoint buffer
01865
0008E6 6001 01866 cpfslt R0 ; Find number of bytes to send this time
0008E8 6E01 01867 movwf R0 ; Too big - send maximum allowed length
01868
0008EA 2AE9 01869 incf FSR0L, F ; Point to Cnt
0008EC 5001 01870 movf R0, W ; Get number to send
0008EE 6EED 01871 movwf POSTDEC0 ; Put length into Cnt and point back to Stat
0008F0 E004 01872 bz PutUSBZero ; Zero to send
01873
0008F2 01874 PutUSBRamLoop
0008F2 CFE6 FFDE 01875 movff POSTINC1, POSTINC2 ; Copy source buffer to endpoint buffer
0008F6 2EE8 01876 decfsz WREG, F ; Count down number of bytes to transfer
0008F8 D7FC 01877 bra PutUSBRamLoop
01878
0008FA 01879 PutUSBZero
0008FA 0E40 01880 movlw _DTSMASK ; Save only DTS bit
0008FC 16EF 01881 andwf INDF0, F
0008FE 7CEF 01882 btg INDF0, DTS ; Toggle DTS bit
000900 0E88 01883 movlw _USIE|_DTSEN ; Turn ownership to SIE
000902 12EF 01884 iorwf INDF0, F
000904 5001 01885 movf R0, W ; Return number of bytes sent
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 62
LOC OBJECT CODE LINE SOURCE TEXT
VALUE
000906 80D8 01886 bsf STATUS, C ; Set Carry for non-error return
000908 0012 01887 return
01888
01889
01890 ; GetUSB
01891 ; Generic get from Out endpoint for RX
01892 ; Input:
01893 ; FSR0L is endpoint number
01894 ; FSR1 is destination buffer pointer
01895 ; W is max buffer length
01896 ; Returns:
01897 ; FSR1 is updated destination buffer pointer
01898 ; W returns number received
01899 ; Carry is clear for buffer not available
01900 ; Uses
01901 ; FSR0 is BDT pointer
01902 ; FSR1 is destination buffer pointer
01903 ; FSR2 is endpoint buffer pointer
01904 ; R0 in BANKA is temporary length storage
01905
00090A 01906 GetUSB
00090A 6E01 01907 movwf R0 ; Save max buffer length
01908
01909 ; Check to see if we're configured
00090C 0104 01910 movlb high 0x400 ; Point to proper bank
00090E 0E06 01911 movlw CONFIGURED_STATE ; We might not be configured yet
000910 5D1A 01912 subwf usb_device_state, W
000912 0E00 01913 movlw 0 ; 0 characters received, so far
000914 90D8 01914 bcf STATUS, C ; Clear Carry for possible error return
000916 E109 01915 bnz GetUSBNotReady ; We're not configured
01916
01917 ; Point FSR0 to requested endpoint Out BDT
000918 44E9 01918 rlncf FSR0L, W ; Endpoint number * 8
00091A 46E8 01919 rlncf WREG, F
00091C 46E8 01920 rlncf WREG, F
00091E EE04 F000 01921 lfsr 0, ep0Bo ; Point FSR0 to beginning of BDT area
000922 26E9 01922 addwf FSR0L, F ; Add endpoint offset to FSR0 (can't overflow to FSR0H)
01923
000924 0E00 01924 movlw 0 ; 0 characters received, so far
000926 90D8 01925 bcf STATUS, C ; Clear Carry for possible error return
000928 BEEF 01926 btfsc INDF0, UOWN ; Who owns the buffer (Stat, UOWN)?
00092A 01927 GetUSBNotReady
00092A 0012 01928 return ; Busy (we don't)
01929
01930 ; Get endpoint buffer address to FSR2
00092C 0E02 01931 movlw ADRL ; Point to ADRL
00092E CFEB FFD9 01932 movff PLUSW0, FSR2L
000932 0E03 01933 movlw ADRH ; Point to ADRH
000934 CFEB FFDA 01934 movff PLUSW0, FSR2H
01935
000938 50EC 01936 movf PREINC0, W ; Get Cnt
00093A 6001 01937 cpfslt R0 ; Make sure it's not longer than the buffer
00093C 6E01 01938 movwf R0 ; It's OK, save returned length
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 63
LOC OBJECT CODE LINE SOURCE TEXT
VALUE
01939
00093E 0EFF 01940 movlw -1
000940 50DB 01941 movf PLUSW2, W ; Get maximum length from in front of endpoint buffer
000942 6EED 01942 movwf POSTDEC0 ; Reset max length and point back to Stat
01943
000944 5001 01944 movf R0, W ; Get count to W
000946 E004 01945 bz GetUSBZero ; Nothing received
01946
000948 01947 GetUSBRamLoop
000948 CFDE FFE6 01948 movff POSTINC2, POSTINC1 ; Copy endpoint buffer to destination buffer
00094C 2EE8 01949 decfsz WREG, F ; Count down number of bytes
00094E D7FC 01950 bra GetUSBRamLoop
01951
000950 01952 GetUSBZero
000950 0E40 01953 movlw _DTSMASK ; Save only DTS bit
000952 16EF 01954 andwf INDF0, F
000954 7CEF 01955 btg INDF0, DTS ; Toggle DTS bit
000956 0E88 01956 movlw _USIE|_DTSEN ; Turn ownership to SIE
000958 12EF 01957 iorwf INDF0, F
00095A 5001 01958 movf R0, W ; Return number of bytes received
00095C 80D8 01959 bsf STATUS, C ; Set Carry for non-error return
00095E 0012 01960 return
00017
000960 00018 MAINPROG
00082
00083 MOVE?CB 000h, TRISA
M CHK?RP TRISA
M if (((TRISA) > BANKA_END) & ((TRISA) < (0f01h + BANKA_END)))
M if (((TRISA) & 0f00h) != (PREV_BANK << 8))
M movlb high (TRISA)
M PREV_BANK = high (TRISA)
M endif
M endif
M if (low (000h) == 0)
000960 6A92 M clrf TRISA
M else
M movlw low (000h)
M movwf TRISA
M endif
00084 MOVE?CB 000h, TRISB
M CHK?RP TRISB
M if (((TRISB) > BANKA_END) & ((TRISB) < (0f01h + BANKA_END)))
M if (((TRISB) & 0f00h) != (PREV_BANK << 8))
M movlb high (TRISB)
M PREV_BANK = high (TRISB)
M endif
M endif
M if (low (000h) == 0)
000962 6A93 M clrf TRISB
M else
M movlw low (000h)
M movwf TRISB
M endif
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 64
LOC OBJECT CODE LINE SOURCE TEXT
VALUE
00085 MOVE?CT 001h, _TRISC??0
M CHK?RP TRISC
M if (((TRISC) > BANKA_END) & ((TRISC) < (0f01h + BANKA_END)))
M if (((TRISC) & 0f00h) != (PREV_BANK << 8))
M movlb high (TRISC)
M PREV_BANK = high (TRISC)
M endif
M endif
M if (((001h) & 1) == 1)
000964 8094 M bsf TRISC, 000h
M else
M bcf TRISC, 000h
M endif
00086 MOVE?CT 001h, _TRISC??1
M CHK?RP TRISC
M if (((TRISC) > BANKA_END) & ((TRISC) < (0f01h + BANKA_END)))
M if (((TRISC) & 0f00h) != (PREV_BANK << 8))
M movlb high (TRISC)
M PREV_BANK = high (TRISC)
M endif
M endif
M if (((001h) & 1) == 1)
000966 8294 M bsf TRISC, 001h
M else
M bcf TRISC, 001h
M endif
00087 MOVE?CT 000h, _TRISC??2
M CHK?RP TRISC
M if (((TRISC) > BANKA_END) & ((TRISC) < (0f01h + BANKA_END)))
M if (((TRISC) & 0f00h) != (PREV_BANK << 8))
M movlb high (TRISC)
M PREV_BANK = high (TRISC)
M endif
M endif
M if (((000h) & 1) == 1)
M bsf TRISC, 002h
M else
000968 9494 M bcf TRISC, 002h
M endif
00088 MOVE?CB _FreqMin, _Frecuencia
M CHK?RP _Frecuencia
M if (((_Frecuencia) > BANKA_END) & ((_Frecuencia) < (0f01h + BANKA_END)))
M if (((_Frecuencia) & 0f00h) != (PREV_BANK << 8))
M movlb high (_Frecuencia)
M PREV_BANK = high (_Frecuencia)
M endif
M endif
M if (low (_FreqMin) == 0)
M clrf _Frecuencia
M else
00096A 0E0A M movlw low (_FreqMin)
00096C 6E1E M movwf _Frecuencia
M endif
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 65
LOC OBJECT CODE LINE SOURCE TEXT
VALUE
00089 MOVE?BB _Frecuencia, PORTB
00096E C01E FF81 M movff _Frecuencia, PORTB
00090 MOVE?CB 000h, PORTA
M CHK?RP PORTA
M if (((PORTA) > BANKA_END) & ((PORTA) < (0f01h + BANKA_END)))
M if (((PORTA) & 0f00h) != (PREV_BANK << 8))
M movlb high (PORTA)
M PREV_BANK = high (PORTA)
M endif
M endif
M if (low (000h) == 0)
000972 6A80 M clrf PORTA
M else
M movlw low (000h)
M movwf PORTA
M endif
00091 MOVE?CB 000h, PORTC
M CHK?RP PORTC
M if (((PORTC) > BANKA_END) & ((PORTC) < (0f01h + BANKA_END)))
M if (((PORTC) & 0f00h) != (PREV_BANK << 8))
M movlb high (PORTC)
M PREV_BANK = high (PORTC)
M endif
M endif
M if (low (000h) == 0)
000974 6A82 M clrf PORTC
M else
M movlw low (000h)
M movwf PORTC
M endif
00092 MOVE?CB 007h, ADCON1
M CHK?RP ADCON1
M if (((ADCON1) > BANKA_END) & ((ADCON1) < (0f01h + BANKA_END)))
M if (((ADCON1) & 0f00h) != (PREV_BANK << 8))
M movlb high (ADCON1)
M PREV_BANK = high (ADCON1)
M endif
M endif
M if (low (007h) == 0)
M clrf ADCON1
M else
000976 0E07 M movlw low (007h)
000978 6EC1 M movwf ADCON1
M endif
00093 MOVE?CB 007h, CMCON
M CHK?RP CMCON
M if (((CMCON) > BANKA_END) & ((CMCON) < (0f01h + BANKA_END)))
M if (((CMCON) & 0f00h) != (PREV_BANK << 8))
M movlb high (CMCON)
M PREV_BANK = high (CMCON)
M endif
M endif
M if (low (007h) == 0)
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 66
LOC OBJECT CODE LINE SOURCE TEXT
VALUE
M clrf CMCON
M else
00097A 0E07 M movlw low (007h)
00097C 6EB4 M movwf CMCON
M endif
00094 USBINIT?
M ifdef USE_USB_BUS_SENSE_IO
M tris_usb_bus_sense = 1 ; Set to input
M endif
M ifdef USE_SELF_POWER_SENSE_IO
M tris_self_power = 1 ; Set to input
M endif
M L?CALL InitializeUSBDriver ; Finish initialization
M RST?RP
M if (PREV_BANK != 0)
M movlb 0
M PREV_BANK = 0
M endif
M
M ifdef USE_LINKER
M call InitializeUSBDriver
M else
M if ((InitializeUSBDriver) < 1)
M call InitializeUSBDriver
M else
M if ((InitializeUSBDriver) > $)
M call InitializeUSBDriver
M else
M if ((InitializeUSBDriver) < ($ - 3ffh))
M call InitializeUSBDriver
M else
00097E DE7D M rcall InitializeUSBDriver
M endif
M endif
M endif
M endif
M L?CALL DUNN ; Do our cleanup
M RST?RP
M if (PREV_BANK != 0)
M movlb 0
M PREV_BANK = 0
M endif
M
M ifdef USE_LINKER
M call DUNN
M else
M if ((DUNN) < 1)
M call DUNN
M else
M if ((DUNN) > $)
M call DUNN
M else
M if ((DUNN) < ($ - 3ffh))
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 67
LOC OBJECT CODE LINE SOURCE TEXT
VALUE
000980 ECD4 F000 M call DUNN
M else
M rcall DUNN
M endif
M endif
M endif
M endif
00095 LCDOUT?C 0FEh
M MOVE?CA 0FEh
000984 0EFE M movlw low (0FEh)
M L?CALL LCDOUT
M RST?RP
M if (PREV_BANK != 0)
M movlb 0
M PREV_BANK = 0
M endif
M
M ifdef USE_LINKER
M call LCDOUT
M else
M if ((LCDOUT) < 1)
M call LCDOUT
M else
M if ((LCDOUT) > $)
M call LCDOUT
M else
M if ((LCDOUT) < ($ - 3ffh))
000986 EC23 F000 M call LCDOUT
M else
M rcall LCDOUT
M endif
M endif
M endif
M endif
00096 LCDOUT?C 001h
M MOVE?CA 001h
00098A 0E01 M movlw low (001h)
M L?CALL LCDOUT
M RST?RP
M if (PREV_BANK != 0)
M movlb 0
M PREV_BANK = 0
M endif
M
M ifdef USE_LINKER
M call LCDOUT
M else
M if ((LCDOUT) < 1)
M call LCDOUT
M else
M if ((LCDOUT) > $)
M call LCDOUT
M else
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 68
LOC OBJECT CODE LINE SOURCE TEXT
VALUE
M if ((LCDOUT) < ($ - 3ffh))
00098C EC23 F000 M call LCDOUT
M else
M rcall LCDOUT
M endif
M endif
M endif
M endif
00097 LCDOUT?C 04Dh
M MOVE?CA 04Dh
000990 0E4D M movlw low (04Dh)
M L?CALL LCDOUT
M RST?RP
M if (PREV_BANK != 0)
M movlb 0
M PREV_BANK = 0
M endif
M
M ifdef USE_LINKER
M call LCDOUT
M else
M if ((LCDOUT) < 1)
M call LCDOUT
M else
M if ((LCDOUT) > $)
M call LCDOUT
M else
M if ((LCDOUT) < ($ - 3ffh))
000992 EC23 F000 M call LCDOUT
M else
M rcall LCDOUT
M endif
M endif
M endif
M endif
00098 LCDOUT?C 06Fh
M MOVE?CA 06Fh
000996 0E6F M movlw low (06Fh)
M L?CALL LCDOUT
M RST?RP
M if (PREV_BANK != 0)
M movlb 0
M PREV_BANK = 0
M endif
M
M ifdef USE_LINKER
M call LCDOUT
M else
M if ((LCDOUT) < 1)
M call LCDOUT
M else
M if ((LCDOUT) > $)
M call LCDOUT
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 69
LOC OBJECT CODE LINE SOURCE TEXT
VALUE
M else
M if ((LCDOUT) < ($ - 3ffh))
000998 EC23 F000 M call LCDOUT
M else
M rcall LCDOUT
M endif
M endif
M endif
M endif
00099 LCDOUT?C 064h
M MOVE?CA 064h
00099C 0E64 M movlw low (064h)
M L?CALL LCDOUT
M RST?RP
M if (PREV_BANK != 0)
M movlb 0
M PREV_BANK = 0
M endif
M
M ifdef USE_LINKER
M call LCDOUT
M else
M if ((LCDOUT) < 1)
M call LCDOUT
M else
M if ((LCDOUT) > $)
M call LCDOUT
M else
M if ((LCDOUT) < ($ - 3ffh))
00099E EC23 F000 M call LCDOUT
M else
M rcall LCDOUT
M endif
M endif
M endif
M endif
00100 LCDOUT?C 075h
M MOVE?CA 075h
0009A2 0E75 M movlw low (075h)
M L?CALL LCDOUT
M RST?RP
M if (PREV_BANK != 0)
M movlb 0
M PREV_BANK = 0
M endif
M
M ifdef USE_LINKER
M call LCDOUT
M else
M if ((LCDOUT) < 1)
M call LCDOUT
M else
M if ((LCDOUT) > $)
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 70
LOC OBJECT CODE LINE SOURCE TEXT
VALUE
M call LCDOUT
M else
M if ((LCDOUT) < ($ - 3ffh))
0009A4 EC23 F000 M call LCDOUT
M else
M rcall LCDOUT
M endif
M endif
M endif
M endif
00101 LCDOUT?C 06Ch
M MOVE?CA 06Ch
0009A8 0E6C M movlw low (06Ch)
M L?CALL LCDOUT
M RST?RP
M if (PREV_BANK != 0)
M movlb 0
M PREV_BANK = 0
M endif
M
M ifdef USE_LINKER
M call LCDOUT
M else
M if ((LCDOUT) < 1)
M call LCDOUT
M else
M if ((LCDOUT) > $)
M call LCDOUT
M else
M if ((LCDOUT) < ($ - 3ffh))
0009AA EC23 F000 M call LCDOUT
M else
M rcall LCDOUT
M endif
M endif
M endif
M endif
00102 LCDOUT?C 061h
M MOVE?CA 061h
0009AE 0E61 M movlw low (061h)
M L?CALL LCDOUT
M RST?RP
M if (PREV_BANK != 0)
M movlb 0
M PREV_BANK = 0
M endif
M
M ifdef USE_LINKER
M call LCDOUT
M else
M if ((LCDOUT) < 1)
M call LCDOUT
M else
MPASM 5.22 USBFM.ASM 1-25-2010 15:59:32 PAGE 71
LOC OBJECT CODE LINE SOURCE TEXT
VALUE
M if ((LCDOUT) > $)
M call LCDOUT
M else
M if ((LCDOUT) < ($ - 3ffh))
0009B0 EC23 F000 M call LCDOUT
M else
M rcall LCDOUT
M endif
M endif
M endif
M endif
00103 LCDOUT?C 064h
M MOVE?CA 064h
0009B4 0E64 M movlw low (064h)
M L?CALL LCDOUT
M RST?RP
M if (PREV_BANK != 0)
M movlb 0
M PREV_BANK = 0
M endif
M
M ifdef USE_LINKER
M call LCDOUT
M else
M if ((LCDOUT) < 1)
M call LCDOUT
M else
M if ((LCDOUT) > $)
M call LCDOUT
M else
M if ((LCDOUT) < ($ - 3ffh))
0009B6 EC23 F000 M call LCDOUT
M else
M rcall LCDOUT
M endif
M endif
M endif
M endif
00104 LCDOUT?C 06Fh
M MOVE?CA 06Fh
0009BA 0E6F M movlw low (06Fh)
M L?CALL LCDOUT
M RST?RP
M if (PREV_BANK != 0)
M movlb 0
M PREV_BANK = 0
M endif
M
M ifdef USE_LINKER
M call LCDOUT