[bsp][stm32][rsoc]串口超时判断逻辑有问题

[bsp][stm32]fix uart bug
2024-10-20 00:24:42 +08:00 · 2024-10-20 00:24:42 +08:00 · 76adf376db
parent 4c206caf8b
commit 76adf376db
1 changed files with 1 additions and 1 deletions
--- a/bsp/stm32/libraries/HAL_Drivers/drivers/drv_usart.c
+++ b/bsp/stm32/libraries/HAL_Drivers/drivers/drv_usart.c
@ -357,7 +357,7 @@ static int stm32_putc(struct rt_serial_device *serial, char c)
 #else
    uart->handle.Instance->DR = c;
 #endif
-    while (__HAL_UART_GET_FLAG(&(uart->handle), UART_FLAG_TC) == RESET && block_timeout--);
+    while (__HAL_UART_GET_FLAG(&(uart->handle), UART_FLAG_TC) == RESET && --block_timeout);
    return (block_timeout != 0) ? 1 : -1;
 }