【AT-START-L021测评】串口通讯

代码;

复制

#include "at32l021_board.h"

#include "at32l021_clock.h"



/** @addtogroup AT32L021_periph_examples

  * @{

  */



/** @addtogroup 021_USART_printf USART_printf

  * @{

  */



__IO uint32_t time_cnt = 0;



/**

  * [url=home.php?mod=space&uid=247401]@brief[/url]  main function.

  * @param  none

  * @retval none

  */

int main(void)

{

  system_clock_config();

  at32_board_init();

  uart_print_init(115200);



  /* output a message on hyperterminal using printf function */

  printf("usart printf example: retarget the c library printf function to the usart\r\n");



  while(1)

  {

    printf("usart printf counter: %u\r\n",time_cnt++);

    delay_sec(1);

  }

}

效果图