From 76adf376db3ed6034fd1a19f053e1e48a08ff428 Mon Sep 17 00:00:00 2001
From: CYFS <2805686936@qq.com>
Date: Sun, 20 Oct 2024 00:24:42 +0800
Subject: [PATCH] =?UTF-8?q?[bsp][stm32][rsoc]=E4=B8=B2=E5=8F=A3=E8=B6=85?=
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[bsp][stm32]fix uart bug
---
 bsp/stm32/libraries/HAL_Drivers/drivers/drv_usart.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bsp/stm32/libraries/HAL_Drivers/drivers/drv_usart.c b/bsp/stm32/libraries/HAL_Drivers/drivers/drv_usart.c
index 5c41bf2841..ca344d9ed3 100644
--- 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;
 }