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hdq.h
Package: msp430.rar　[view]
Upload User: xs588588
Upload Date: 2021-03-30
Package Size: 242k
Code Size: 1k
Category:

DSP program

Development Platform:

C/C++

hdq.h：Code Content
  2. // Timer clock frequency (Hz)
  3. #define ClkFreq     2000000u                   
  4. //------------------------------------------------------------------------------
  5. // Define HDQ Protocol Related Timing Constants
  6. //------------------------------------------------------------------------------
  7. #define tBreak      (190 * ClkFreq / 1000000)   // HDQ Break Time (190us)
  8. #define tBR         (40 * ClkFreq / 1000000)    // HDQ Break Recovery Time (40us)
  9. #define tHW1        (40 * ClkFreq / 1000000)    // Host sends 1 time (40us)
  10. #define tHW0        (123 * ClkFreq / 1000000)   // Host sends 0 time (123us)
  11. #define tCYCH       (230 * ClkFreq / 1000000)   // Host bit window timing (230us)
  12. #define tDW1        (41 * ClkFreq / 1000000)    // Slave sends 1 time (41us)
  13. #define tDW0        (113 * ClkFreq / 1000000)   // Slave sends 0 time (113us)
  14. #define tTO         (500 * ClkFreq / 1000000)   // Time-Out Bit Receiption (500us)
  15. //-----------------------------------------------------
  16. void HDQSetup(void);
  17. void HDQWrite(unsigned char Addr, unsigned char Data);
  18. unsigned int HDQRead(unsigned char Addr);