48 lines
1.0 KiB
C
Executable File
48 lines
1.0 KiB
C
Executable File
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "usbd_cdc_vcp.h"
|
|
|
|
/**
|
|
* @brief Transmit a char, if you want to use printf(),
|
|
* you need implement this function
|
|
*
|
|
* @param pStr Storage string.
|
|
* @param c Character to write.
|
|
*/
|
|
void PrintChar(char c) {
|
|
/* Send a char like:
|
|
while(Transfer not completed);
|
|
Transmit a char;
|
|
*/
|
|
USB_VCOM_Send( &c, 1);
|
|
}
|
|
|
|
/**
|
|
* @brief Implementation of fputs using the DBGU as the standard output. Required
|
|
* for printf().
|
|
*
|
|
* @param pStr String to write.
|
|
* @param pStream Output stream.
|
|
*
|
|
* @return Number of characters written if successful, or -1 if the output
|
|
* stream is not stdout or stderr.
|
|
*/
|
|
signed int fputs(const char *pStr, FILE *pStream)
|
|
{
|
|
#if 0
|
|
signed int num = 0;
|
|
while (*pStr != 0) {
|
|
if (fputc(*pStr, pStream) == -1) {
|
|
return -1;
|
|
}
|
|
num++;
|
|
pStr++;
|
|
}
|
|
return num;
|
|
#endif
|
|
|
|
USB_VCOM_Send((char*)pStr, strlen(pStr));
|
|
return strlen(pStr);
|
|
}
|