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fix the returned value of rt_serial_getc function which is reported by macroz. 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@24 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong 2009-08-20 05:45:18 +00:00
parent 34f993d35a
commit 3e58b1940f
1 changed files with 2 additions and 2 deletions
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4
libcpu/arm/stm32/serial.c
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@ -27,10 +27,10 @@ static void rt_serial_enable_dma(DMA_Channel_TypeDef* dma_channel,
* *
* @return the read char * @return the read char
*/ */
char rt_serial_getc(struct stm32_serial_device* uart) int rt_serial_getc(struct stm32_serial_device* uart)
{ {
rt_base_t level; rt_base_t level;
char ch = 0; int ch = -1;
/* disable interrupt */ /* disable interrupt */
level = rt_hw_interrupt_disable(); level = rt_hw_interrupt_disable();