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Fix initiali interrupt issue

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@947 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2008-09-20 16:24:14 +00:00
parent 130667fa1d
commit fd831038f6
1 changed files with 9 additions and 2 deletions
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arch/arm/src/lpc214x/lpc214x_serial.c
+9 -2
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@@ -61,8 +61,6 @@
* Definitions * Definitions
****************************************************************************/ ****************************************************************************/
#define BASE_BAUD 38400
/**************************************************************************** /****************************************************************************
* Private Types * Private Types
****************************************************************************/ ****************************************************************************/
@@ -356,6 +354,15 @@ static int up_setup(struct uart_dev_s *dev)
up_serialout(priv, LPC214X_UART_FCR_OFFSET, up_serialout(priv, LPC214X_UART_FCR_OFFSET,
(LPC214X_FCR_FIFO_TRIG8|LPC214X_FCR_TX_FIFO_RESET|\ (LPC214X_FCR_FIFO_TRIG8|LPC214X_FCR_TX_FIFO_RESET|\
LPC214X_FCR_RX_FIFO_RESET|LPC214X_FCR_FIFO_ENABLE)); LPC214X_FCR_RX_FIFO_RESET|LPC214X_FCR_FIFO_ENABLE));
/* The NuttX serial driver waits for the first THRE interrrupt before
* sending serial data... However, it appears that the lpc214x hardware
* does not generate that interrupt until a transition from not-empty
* to empty. So, the current kludge here is to send one NULL at
* startup to kick things off.
*/
up_serialout(priv, LPC214X_UART_THR_OFFSET, '\0');
#endif #endif
return OK; return OK;
} }