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comload.c
资源名称：src.rar　[点击查看]
上传用户：jankzhpno
上传日期：2022-08-03
资源大小：4763k
文件大小：2k
源码类别：

Windows CE

开发平台：

Visual C++

comload.c：源码内容
  1. #include "def.h"
  2. #include "2440addr.h"
  3. #include "2440lib.h"
  5. #define puts Uart_Printf
  6. #define printf Uart_Printf
  7. #define getch Uart_Getch
  9. #ifndef DEBUG_VERSION
  10. #define USE_UART_INT
  11. #endif
  13. extern U32 downloadAddress, downloadFileSize;
  14. static U8 *temp;
  16. #ifdef USE_UART_INT
  17. static void __irq Uart0RxInt(void)
  18. {
  19.     ClearSubPending(BIT_SUB_RXD0); //rSUBSRCPND = BIT_SUB_RXD0;          //Clear pending bit (Requested)
  20.     ClearPending(BIT_UART0);
  22.     *temp ++= RdURXH0(); 
  23. }
  24. #endif
  26. void call_linux(U32 a0, U32 a1, U32 a2);
  28. void comdownload(void)
  29. {
  30. U32 size;
  31. U8 *buf;
  32. U16 checksum;
  34. puts("nNow download file from uart0...n");
  35. downloadAddress = _NONCACHE_STARTADDRESS;
  36. buf  = (U8 *)downloadAddress;
  37. temp = buf-4;
  39. Uart_GetKey();
  41. #ifdef USE_UART_INT
  42. pISR_UART0 = (U32)Uart0RxInt; //串口接收数据中断
  43. ClearSubPending(BIT_SUB_RXD0);
  44. ClearPending(BIT_UART0);
  45. EnableSubIrq(BIT_SUB_RXD0);
  46. EnableIrq(BIT_UART0);
  47. #endif
  49. while((U32)temp<(U32)buf)
  50.     {
  51.  #ifdef USE_UART_INT
  52.         Led_Display(0);
  53.         Delay(1000);
  54.         Led_Display(15);
  55.         Delay(1000);
  56. #else
  57. *temp++ = Uart_Getch();
  58. #endif
  59.     } //接收文件长度,4 bytes
  61. size  = *(U32 *)(buf-4);
  62. downloadFileSize = size-6;
  64. #ifdef USE_UART_INT
  65.     printf("Download File Size = %dn", size);
  66. #endif
  68. while(((U32)temp-(U32)buf)<(size-4))
  69. {
  70. #ifdef USE_UART_INT
  71. Led_Display(0);
  72.         Delay(1000);
  73.         Led_Display(15);
  74.         Delay(1000);
  75. #else
  76. *temp++ = Uart_Getch();
  77. #endif
  78. }
  80. #ifdef USE_UART_INT
  81. DisableSubIrq(BIT_SUB_RXD0);
  82. DisableIrq(BIT_UART0);
  83. #endif
  85. #ifndef USE_UART_INT
  86. printf("Download File Size = %dn", size);
  87. #endif
  89. checksum = 0;
  90. for(size=0; size<downloadFileSize; size++)
  91. checksum += buf[size];
  92. if(checksum!=(buf[size]|(buf[size+1]<<8))) {
  93. puts("Checksum fail!n");
  94. return;
  95. }
  97. puts("Are you sure to run? [y/n]n");
  98. while(1)
  99. {
  100. U8 key = getch();
  101. if(key=='n')
  102. return;
  103. if(key=='y')
  104. break;
  105. }
  107. call_linux(0, 193, downloadAddress);
  108. }