Merge pull request #2682 from misonyo/rttdev

[components/drivers/serial]add low level DMA TX config support.
2019-05-13 18:25:54 +08:00 · 2019-05-13 18:25:54 +08:00 · 0dae909f66
parent 3d04e46289 f58e947da6
commit 0dae909f66
1 changed files with 2 additions and 0 deletions
--- a/components/drivers/serial/serial.c
+++ b/components/drivers/serial/serial.c
@ -675,6 +675,8 @@ static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)
            serial->serial_tx = tx_dma;

            dev->open_flag |= RT_DEVICE_FLAG_DMA_TX;
+            /* configure low level device */
+            serial->ops->control(serial, RT_DEVICE_CTRL_CONFIG, (void *)RT_DEVICE_FLAG_DMA_TX);
        }
 #endif /* RT_SERIAL_USING_DMA */
        else