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