RA0E1的printf

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1. /* 重定向 printf 输出 */
   
2. #if defined __GNUC__ && !defined __clang__
   
3. int _write(int fd, char *pBuffer, int size); //防止编译警告
   
4. int _write(int fd, char *pBuffer, int size)
   
5. {
   
6.     (void)fd;
   
7.     struct UartDev *pLogDevice = UartDeviceFind("Log");
   
8.     pLogDevice->Write(pLogDevice, (unsigned char*)&ch, 1);
   
9.     return size;
   
10. }
    
11. 
    
12. 
    
13. int _read (int fd, char *pBuffer, int size)
    
14. {
    
15.     (void)fd;
    
16.     struct UartDev *pLogDevice = UartDeviceFind("Log");
    
17.         /* 启动接收字符 */
    
18.     while(pLogDevice->Read(pLogDevice, (unsigned char*)&pBuffer, size) != size)
    
19.     {}
    
20.     return size;
    
21. }
    
22. #else
    
23. #if defined (__ARMCC_VERSION) && (__ARMCC_VERSION < 6010050)
    
24. struct __FILE{
    
25.    int handle;
    
26. };
    
27. #endif
    
28. FILE __stdout;
    
29. int fputc(int ch, FILE *f)
    
30. {
    
31.     (void)f;
    
32.     struct UartDev *pLogDevice = UartDeviceFind("Log");
    
33.     pLogDevice->Write(pLogDevice, (unsigned char*)&ch, 1);
    
34.     return ch;
    
35. }
    
36. 
    
37. /* 重写这个函数,重定向scanf */
    
38. int fgetc(FILE *f)
    
39. {
    
40.         uint8_t ch;
    
41.        
    
42.         (void)f;
    
43.     struct UartDev *pLogDevice = UartDeviceFind("Log");
    
44.         /* 启动接收字符 */
    
45.     while(pLogDevice->Read(pLogDevice, (unsigned char*)&ch, 1) != 1)
    
46.     {}
    
47.         /* 回显 */
    
48.         {
    
49.                 fputc(ch, &__stdout);
    
50.                
    
51.                 /* 回车之后加换行 */
    
52.                 if (ch == '\r')
    
53.                 {
    
54.                         fputc('\n', &__stdout);
    
55.                 }
    
56.         }
    
57.    
    
58.         return (int)ch;
    
59. }

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