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lock UART for RS232 in putchar

This commit is contained in:
nvt-se 2008-05-27 13:03:19 +00:00
parent bff587e32c
commit 9c9c2573c3
1 changed files with 6 additions and 9 deletions
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15
platform/msb430/dev/rs232.c
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@ -28,7 +28,7 @@
* *
* This file is part of the Contiki operating system. * This file is part of the Contiki operating system.
* *
* @(#)$Id: rs232.c,v 1.4 2008/03/28 15:59:58 nvt-se Exp $ * @(#)$Id: rs232.c,v 1.5 2008/05/27 13:03:19 nvt-se Exp $
*/ */
/** \addtogroup esbrs232 /** \addtogroup esbrs232
@ -79,11 +79,12 @@ rs232_send(char c)
int int
putchar(int c) putchar(int c)
{ {
if (uart_get_mode() == UART_MODE_RS232) { if (uart_lock(UART_MODE_RS232)) {
/* Loop until the transmission buffer is available. */ /* Loop until the transmission buffer is available. */
UART_WAIT_TX(); UART_WAIT_TX();
/* Transmit the data. */ /* Transmit the data. */
UART_TX = c; UART_TX = c;
uart_unlock(UART_MODE_RS232);
return c; return c;
} else { } else {
return -1; return -1;
@ -108,13 +109,9 @@ rs232_set_speed(enum rs232_speed speed)
void void
rs232_print(char *cptr) rs232_print(char *cptr)
{ {
// lock UART for print operation while(*cptr != 0) {
if (uart_lock(UART_MODE_RS232)) { rs232_send(*cptr);
while(*cptr != 0) { ++cptr;
rs232_send(*cptr);
++cptr;
}
uart_unlock(UART_MODE_RS232);
} }
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/