printf for usart1

Core/Src/main.c

@@ -70,8 +70,8 @@ static void MX_USART1_UART_Init(void);
 /***************************************************************************//**
  * @brief Character send interface for printf function
  *//****************************************************************************/
-void uart_putc(void *p, char c) {
-   Usart6_PutByte(c);
+void printf_putc(void *p, char c) {
+   Usart1_PutByte(c);
 }
 
 /* USER CODE END 0 */
@@ -113,8 +113,8 @@ int main(void) {
    Usart2_Init();
    Usart6_Init();
    Usart1_Init();
-   init_printf(NULL, &uart_putc);// connect printf to UART
-   printf("Hello world. This is a Nucleo UART and printf sample with IRQ and ring buffer.\n");
+   init_printf(NULL, &printf_putc);
+   printf("Nucleo UART with IRQ and ring buffer\n");
    /* USER CODE END 2 */
 
    /* Infinite loop */