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Update uart.c 

Add interrupt enter and leave
This commit is contained in:
miaoqiongb 2015-11-11 10:43:57 +08:00
parent 46fe0a48dc
commit 2b0a5b93b7
1 changed files with 4 additions and 2 deletions
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6
bsp/lpc176x/drivers/uart.c
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@ -60,7 +60,8 @@ void UART0_IRQHandler(void)
{ {
rt_ubase_t level, iir; rt_ubase_t level, iir;
struct rt_uart_lpc *uart = &uart_device; struct rt_uart_lpc *uart = &uart_device;
/* enter interrupt */
rt_interrupt_enter();
/* read IIR and clear it */ /* read IIR and clear it */
iir = LPC_UART->IIR; iir = LPC_UART->IIR;
@ -94,7 +95,8 @@ void UART0_IRQHandler(void)
{ {
iir = LPC_UART->LSR; //oe pe fe oe read for clear interrupt iir = LPC_UART->LSR; //oe pe fe oe read for clear interrupt
} }
/* leave interrupt */
rt_interrupt_leave();
return; return;
} }