chinky/rtt-f030
chinky/rtt-f030
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

FIX: US_IMR is a read-only register.

Browse Source 
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@488 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
mbbill 2010-03-14 15:14:25 +00:00
parent b8653e766f
commit 1c2add1a89
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
bsp/sam7x/serial.c
View File

@ -11,6 +11,7 @@
* Date Author Notes
* 2006-08-23 Bernard first version
* 2009-05-14 Bernard add RT-THread device interface
* 2010-03-14 MingBai US_IMR is read-only.
*/
#include <rthw.h>
@ -194,7 +195,8 @@ static rt_err_t rt_serial_open(rt_device_t dev, rt_uint16_t oflag)
{
/* enable UART rx interrupt */
serial->hw_base->US_IER = 1 << 0; /* RxReady interrupt */
serial->hw_base->US_IMR |= 1 << 0; /* umask RxReady interrupt */
// US_IMR is a READ-ONLY register!
//serial->hw_base->US_IMR |= 1 << 0; /* umask RxReady interrupt */
/* install UART handler */
rt_hw_interrupt_install(serial->peripheral_id, rt_hw_serial_isr, RT_NULL);
@ -214,7 +216,7 @@ static rt_err_t rt_serial_close(rt_device_t dev)
{
/* disable interrupt */
serial->hw_base->US_IDR = 1 << 0; /* RxReady interrupt */
serial->hw_base->US_IMR &= ~(1 << 0); /* mask RxReady interrupt */
//serial->hw_base->US_IMR &= ~(1 << 0); /* mask RxReady interrupt */
}
serial->hw_base->US_CR = AT91C_US_RSTRX | /* Reset Receiver */