fix:stm32 uart timout

CYFS3 · CYFS3 · commit 31ede6e00a2c · 2025-02-24T16:46:59.000+08:00
diff --git a/bsp/stm32/libraries/HAL_Drivers/drivers/drv_usart.c b/bsp/stm32/libraries/HAL_Drivers/drivers/drv_usart.c
@@ -34,9 +34,6 @@
 static void stm32_dma_config(struct rt_serial_device *serial, rt_ubase_t flag);
 #endif
 
-/* Number of while blocking timeouts for the stm32_putc */
-#define TX_BLOCK_TIMEOUT    2000
-
 enum
 {
 #ifdef BSP_USING_UART1
@@ -233,8 +230,7 @@ static rt_err_t stm32_configure(struct rt_serial_device *serial, struct serial_c
         return -RT_ERROR;
     }
     uart->DR_mask = stm32_uart_get_mask(uart->handle.Init.WordLength, uart->handle.Init.Parity);
-    uart->tx_block_timeout = TX_BLOCK_TIMEOUT;
-
+    uart->tx_block_timeout = (rt_uint32_t)(10 * HAL_RCC_GetSysClockFreq() / cfg->baud_rate / 4) ;
     return RT_EOK;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -34,9 +34,6 @@`
`34`	`34`	`static void stm32_dma_config(struct rt_serial_device *serial, rt_ubase_t flag);`
`35`	`35`	`#endif`
`36`	`36`
`37`		`-/* Number of while blocking timeouts for the stm32_putc */`
`38`		`-#define TX_BLOCK_TIMEOUT 2000`
`39`		`-`
`40`	`37`	`enum`
`41`	`38`	`{`
`42`	`39`	`#ifdef BSP_USING_UART1`
`@@ -233,8 +230,7 @@ static rt_err_t stm32_configure(struct rt_serial_device *serial, struct serial_c`
`233`	`230`	`return -RT_ERROR;`
`234`	`231`	`}`
`235`	`232`	`uart->DR_mask = stm32_uart_get_mask(uart->handle.Init.WordLength, uart->handle.Init.Parity);`
`236`		`- uart->tx_block_timeout = TX_BLOCK_TIMEOUT;`
`237`		`-`
	`233`	`+ uart->tx_block_timeout = (rt_uint32_t)(10 * HAL_RCC_GetSysClockFreq() / cfg->baud_rate / 4) ;`
`238`	`234`	`return RT_EOK;`
`239`	`235`	`}`
`240`	`236`