void TM_SWO_Init(void) {
/* Enable SWO output */
DBGMCU->CR = 0x00000020;
/* Link output function for output stream functionality */
TM_STDIO_SetOutputFunction(&TM_SWO_File, TM_SWO_fputc);
}
int main(void) {
char str[100];
/* Initialize system */
SystemInit();
/* Initialize delay */
TM_DELAY_Init();
/* Initialize USART1, TX = PB6, RX = PB7, 115200 bauds */
TM_USART_Init(USART1, TM_USART_PinsPack_2, 115200);
/* Initialize USART2, TX = PD5, RX = PD6, 115200 bauds*/
TM_USART_Init(USART2, TM_USART_PinsPack_2, 115200);
/* Initialize USART6, TX = PC6, RX = PC7, 115200 bauds */
TM_USART_Init(USART6, TM_USART_PinsPack_1, 115200);
/* Add output function for USART2_Stream */
TM_STDIO_SetOutputFunction(&USART2_Stream, USART2_Stream_OutputFunction);
/* Add input function for USART2_Stream */
TM_STDIO_SetInputFunction(&USART2_Stream, USART2_Stream_InputFunction);
/* Add output function for USART6_Stream */
TM_STDIO_SetOutputFunction(&USART6_Stream, USART6_Stream_OutputFunction);
/* Add input function for USART6_Stream */
TM_STDIO_SetInputFunction(&USART6_Stream, USART6_Stream_InputFunction);
/* Print something on USART1 */
printf("Hello USART1 user\n");
/* Print something on USART2 */
fprintf(&USART2_Stream, "Hello USART2 user\n");
/* Print something on USART6 */
fprintf(&USART6_Stream, "Hello USART6 user\n");
while (1) {
/* If data are available on stream */
/* Check data on standard header, USART1 */
/* stdin or standard input */
if (fgets(str, 100, stdin) != NULL) {
/* Send data back */
/* Statement below is the same as of use printf function */
fprintf(stdout, (char *)str);
}
/* Check data on USART2 stream */
if (fgets(str, 100, &USART2_Stream) != NULL) {
/* Send data back */
/* Send data to USART2 stream */
fprintf(&USART2_Stream, (char *)str);
}
/* Check data on USART6 stream */
if (fgets(str, 100, &USART6_Stream) != NULL) {
/* Send data back */
/* Send data to USART2 stream */
fprintf(&USART6_Stream, (char *)str);
}
/* Some delay */
/* If you call your gets too often, then it can happen that USART characters are not in buffer yet */
/* and function will not do as it should */
Delayms(1000);
}
}