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[drivers][serial_v2]修复DMA+TX阻塞模式异常 (#6781)

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* [drivers][serial_v2]修复DMA+TX阻塞模式异常
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wdfk-prog 2023-01-05 14:25:16 +08:00 committed by GitHub
parent 24575c4486
commit 8f0cef3a87
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1 changed files with 2 additions and 1 deletions
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components/drivers/serial/serial_v2.c
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2006-2021, RT-Thread Development Team
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
@ -694,6 +694,7 @@ static rt_err_t rt_serial_tx_enable(struct rt_device *dev,
tx_fifo->activated = RT_FALSE;
tx_fifo->put_size = 0;
rt_memset(&tx_fifo->rb, RT_NULL, sizeof(tx_fifo->rb));
rt_completion_init(&(tx_fifo->tx_cpt));
dev->open_flag |= RT_SERIAL_TX_BLOCKING;