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Merge pull request #544 from Quintin-Z/quintin 

fix DMA tx mod tx_dma->activated flag init bug.
This commit is contained in:
Bernard Xiong 2015-08-31 15:01:08 +08:00
parent 551a663078 23b5fe5239
commit 918250d7bd
1 changed files with 3 additions and 0 deletions
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3
components/drivers/serial/serial.c
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@ -27,6 +27,8 @@
* the size of ring buffer. * the size of ring buffer.
* 2014-07-10 bernard rewrite serial framework * 2014-07-10 bernard rewrite serial framework
* 2014-12-31 bernard use open_flag for poll_tx stream mode. * 2014-12-31 bernard use open_flag for poll_tx stream mode.
* 2015-05-19 Quintin fix DMA tx mod tx_dma->activated flag !=RT_FALSE BUG
* in open function.
*/ */
#include <rthw.h> #include <rthw.h>
@ -302,6 +304,7 @@ static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)
tx_dma = (struct rt_serial_tx_dma*) rt_malloc (sizeof(struct rt_serial_tx_dma)); tx_dma = (struct rt_serial_tx_dma*) rt_malloc (sizeof(struct rt_serial_tx_dma));
RT_ASSERT(tx_dma != RT_NULL); RT_ASSERT(tx_dma != RT_NULL);
tx_dma->activated = RT_FALSE;
rt_data_queue_init(&(tx_dma->data_queue), 8, 4, RT_NULL); rt_data_queue_init(&(tx_dma->data_queue), 8, 4, RT_NULL);
serial->serial_tx = tx_dma; serial->serial_tx = tx_dma;