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| author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2008-09-20 16:24:14 +0000 |
|---|---|---|
| committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2008-09-20 16:24:14 +0000 |
| commit | 1ad2ebcc1b40ae32deaad616cec9f4255e6f7ace (patch) | |
| tree | d5f7fa9ae21ab59f56a63159d10d278ba306fcab /nuttx/arch/arm | |
| parent | 5a3ff6669c47495674320f0bc8d1e91251c61da1 (diff) | |
| download | px4-nuttx-1ad2ebcc1b40ae32deaad616cec9f4255e6f7ace.tar.gz px4-nuttx-1ad2ebcc1b40ae32deaad616cec9f4255e6f7ace.tar.bz2 px4-nuttx-1ad2ebcc1b40ae32deaad616cec9f4255e6f7ace.zip | |
Fix initiali interrupt issue
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@947 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/arch/arm')
| -rw-r--r-- | nuttx/arch/arm/src/lpc214x/lpc214x_serial.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/nuttx/arch/arm/src/lpc214x/lpc214x_serial.c b/nuttx/arch/arm/src/lpc214x/lpc214x_serial.c index 84de77ff5..b2817dbc9 100644 --- a/nuttx/arch/arm/src/lpc214x/lpc214x_serial.c +++ b/nuttx/arch/arm/src/lpc214x/lpc214x_serial.c @@ -61,8 +61,6 @@ * Definitions ****************************************************************************/ -#define BASE_BAUD 38400 - /**************************************************************************** * Private Types ****************************************************************************/ @@ -356,6 +354,15 @@ static int up_setup(struct uart_dev_s *dev) up_serialout(priv, LPC214X_UART_FCR_OFFSET, (LPC214X_FCR_FIFO_TRIG8|LPC214X_FCR_TX_FIFO_RESET|\ 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 return OK; } |