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[DeviceDriver][serial]Fix data bits error issue when using tcsetattr to set uart parameters. 

data bits should get from CSIZE.
This commit is contained in:
JasonJiaJie 2017-11-07 10:45:02 +08:00 committed by Bernard Xiong
parent 6b1911e4f4
commit 75c6c40a64
1 changed files with 18 additions and 6 deletions
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24
components/drivers/serial/serial.c
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@ -32,6 +32,7 @@
* 2015-11-10 bernard fix the poll rx issue when there is no data.
* 2016-05-10 armink add fifo mode to DMA rx when serial->config.bufsz != 0.
* 2017-01-19 aubr.cool prevent change serial rx bufsz when serial is opened.
* 2017-11-07 JasonJia fix data bits error issue when using tcsetattr.
*/
#include <rthw.h>
@ -932,13 +933,24 @@ static rt_err_t rt_serial_control(struct rt_device *dev,
baudrate = _get_baudrate(cfgetospeed(tio));
config.baud_rate = baudrate;
if (tio->c_cflag & CS6) config.data_bits = DATA_BITS_6;
else if (tio->c_cflag & CS7) config.data_bits = DATA_BITS_7;
else if (tio->c_cflag & CS8) config.data_bits = DATA_BITS_8;
else config.data_bits = DATA_BITS_5;
switch (tio->c_cflag & CSIZE)
{
case CS5:
config.data_bits = DATA_BITS_5;
break;
case CS6:
config.data_bits = DATA_BITS_6;
break;
case CS7:
config.data_bits = DATA_BITS_7;
break;
default:
config.data_bits = DATA_BITS_8;
break;
}
if (tio->c_cflag & CSTOPB) config.data_bits = STOP_BITS_2;
else config.data_bits = STOP_BITS_1;
if (tio->c_cflag & CSTOPB) config.stop_bits = STOP_BITS_2;
else config.stop_bits = STOP_BITS_1;
if (tio->c_cflag & PARENB)
{