diff options
Diffstat (limited to 'nuttx/drivers/serial')
| -rw-r--r-- | nuttx/drivers/serial/serial.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/nuttx/drivers/serial/serial.c b/nuttx/drivers/serial/serial.c index df942a050..5675f1791 100644 --- a/nuttx/drivers/serial/serial.c +++ b/nuttx/drivers/serial/serial.c @@ -65,6 +65,9 @@ #define uart_putc(ch) up_putc(ch) +#define HALF_SECOND_MSEC 500 +#define HALF_SECOND_USEC 500000L + /************************************************************************************ * Private Types ************************************************************************************/ @@ -543,9 +546,9 @@ static int uart_close(FAR struct file *filep) while (dev->xmit.head != dev->xmit.tail) { #ifndef CONFIG_DISABLE_SIGNALS - usleep(500*1000); + usleep(HALF_SECOND_USEC); #else - up_mdelay(500); + up_mdelay(HALF_SECOND_MSEC); #endif } @@ -554,9 +557,9 @@ static int uart_close(FAR struct file *filep) while (!uart_txempty(dev)) { #ifndef CONFIG_DISABLE_SIGNALS - usleep(500*1000); + usleep(HALF_SECOND_USEC); #else - up_mdelay(500); + up_mdelay(HALF_SECOND_MSEC); #endif } |