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LED0.c
Package: DSP-C6000-DM642DEMO.rar　[view]
Upload User: dahaojd
Upload Date: 2008-01-29
Package Size: 14357k
Code Size: 2k
Category:

DSP program

Development Platform:

C/C++

LED0.c：Code Content
  1. #include "c6x.h"
  3. //#define PROGXOR 1
  5. #define LEDCTLR (*((unsigned char*)(0x90080017)))
  7. void InitEMIF(); // 初始化EMIF接口
  8. void Delay(unsigned int nDelay); // 软件延时子程序
  10. main()
  11. {
  12. int i,j;
  13. unsigned int uWork;
  15. while ( 1 )
  16. {
  17. LEDCTLR=0; // 点亮所有4个指示灯
  18. Delay(1024); // 等待片刻
  19. LEDCTLR=0x0f; // 关闭所有4个指示灯
  20. Delay(1024);
  21. #ifndef PROGXOR
  22. uWork=1; // 以下逐个点亮指示灯
  23. for ( i=0;i<4;i++ )
  24. {
  25. LEDCTLR&=((~uWork)&0x0ff);
  26. uWork<<=1;
  27. Delay(1024);
  28. }
  29. uWork=1; // 以下逐个关闭指示灯
  30. for ( i=0;i<4;i++ )
  31. {
  32. LEDCTLR|=uWork;
  33. uWork<<=1;
  34. Delay(1024);
  35. }
  36. #else
  37. for ( j=0;j<2;j++ )
  38. {
  39. uWork=1; // 以下逐个关闭或点亮指示灯
  40. for ( i=0;i<4;i++ )
  41. {
  42. LEDCTLR^=uWork;
  43. uWork<<=1;
  44. Delay(1024);
  45. }
  46. }
  47. #endif
  48. }
  49. }
  51. // 软件延时子程序
  52. void Delay(unsigned int nDelay)
  53. {
  54. unsigned int i,j,k=0;
  56. for ( i=0;i<nDelay;i++ )
  57. for ( j=0;j<6144;j++ )
  58. k++;
  59. }
  61. // 初始化EMIF接口
  62. void InitEMIF()
  63. {
  65. #define EMIFA_GCTL       0x01800000
  66. #define EMIFA_CE1        0x01800004
  67. #define EMIFA_CE0        0x01800008
  68. #define EMIFA_CE2        0x01800010
  69. #define EMIFA_CE3        0x01800014
  70. #define EMIFA_SDRAMCTL   0x01800018
  71. #define EMIFA_SDRAMTIM   0x0180001c
  72. #define EMIFA_SDRAMEXT   0x01800020
  73. #define EMIFA_CE1SECCTL  0x01800044
  74. #define EMIFA_CE0SECCTL  0x01800048
  75. #define EMIFA_CE2SECCTL  0x01800050
  76. #define EMIFA_CE3SECCTL  0x01800054
  78.     /* EMIFA */
  79.     *(int *)EMIFA_GCTL     = 0x00052078;
  80.     *(int *)EMIFA_CE0      = 0xffffffd3;  /* CE0 SDRAM                     */
  81.     *(int *)EMIFA_CE1      = 0x73a28e01;  /* CE1 Flash + CPLD              */
  82.     *(int *)EMIFA_CE2      = 0x22a28a22;  /* CE2 子卡 32-bit 异步接口      */
  83.     *(int *)EMIFA_CE3      = 0x22a28a42;  /* CE3 子卡 32-bit 同步接口      */
  84.     *(int *)EMIFA_SDRAMCTL = 0x57115000;  /* SDRAM 控制                    */
  85.     *(int *)EMIFA_SDRAMTIM = 0x0000081b;  /* SDRAM 刷新时序                */
  86.     *(int *)EMIFA_SDRAMEXT = 0x001faf4d;  /* SDRAM 扩展控制                */
  87.     *(int *)EMIFA_CE0SECCTL= 0x00000002;  /* CE0 第二控制寄存器            */
  88.     *(int *)EMIFA_CE1SECCTL= 0x00000002;  /* CE1 第二控制寄存器            */
  89.     *(int *)EMIFA_CE2SECCTL= 0x00000002;  /* CE2 第二控制寄存器            */
  90.     *(int *)EMIFA_CE3SECCTL= 0x00000073;  /* CE3 第二控制寄存器            */
  91. }