ST NUCLEO-C031C6 development board study notes 02 (serial port print output)

qzc0927

ST NUCLEO-C031C6 development board study notes 02 (serial port print output) [Copy link]

<div class='showpostmsg'>## ==5: Serial communication== ### 5.1: Serial communication hardware configuration First look at the chip manual. The chip comes with 2 sets of serial ports, serial port 1 and serial port 2. We use one of them for testing.  We use PA9 and PA10 as the TX and RX pins of the serial port respectively. The location of the schematic diagram is as follows:  ### 5.2: Serial communication software configuration First configure the serial port pins and working mode on CubeMX. Next is the serial communication parameter configuration. The default baud rate is 115200:  The clock defaults to 48M, which is the maximum main frequency of the microcontroller:  We are using serial port 2. When using printf to print, we have to reconfigure the program for microcontroller output. ```C int fputc(int ch, FILE *f) { HAL_UART_Transmit(&huart2, (uint8_t *)&ch, 1, 2); return ch; } ``` ### 5.3: Serial communication unit test Write test code: ```C while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ HAL_Delay(500); printf("123456"); HAL_GPIO_TogglePin(GPIOA,GPIO_PIN_5); } ``` Open the serial port debugging assistant and check the serial port information. You can see that the string "123456" is continuously output. </div><script> var loginstr = '<div class="locked">To view all the contents of the post, please <a href="/bbs/member.php?mod=logging&action=login" style="color:#e60000" class="loginf">log in</a> or <a href="/bbs/member.php?mod=register_eeworld.php&action=wechat" style="color:#e60000" target="_blank">register</a></div>'; if(parseInt(discuz_uid)==0){ } </script><script type="text/javascript">(function(d,c){var a=d.createElement("script"),m=d.getElementsByTagName("script")[0],eewurl="//counter.eeworld.com.cn/pv/count/";a.src=eewurl+c;m.parentNode.insertBefore(a,m)})(document,523)</script>

Jacktang

The serial communication unit test is normal through the serial assistant

kevin-----

Thanks a lot for sharing