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Turned up the rtimer resolution to 32678 Hz.

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This commit is contained in:
adamdunkels 2010-12-16 22:50:21 +00:00
parent 1d090ea0f5
commit f370b217a5
2 changed files with 14 additions and 9 deletions
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17
cpu/msp430/clock.c
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@ -28,7 +28,7 @@
*
* This file is part of the Contiki operating system.
*
* @(#)$Id: clock.c,v 1.25 2010/04/04 12:29:50 adamdunkels Exp $
* @(#)$Id: clock.c,v 1.26 2010/12/16 22:50:21 adamdunkels Exp $
*/
@ -49,12 +49,14 @@
static volatile unsigned long seconds;
static volatile clock_time_t count = 0;
/* last_tar is used for calculating clock_fine, last_ccr might be better? */
static unsigned short last_tar = 0;
/* last_tar is used for calculating clock_fine */
static volatile uint16_t last_tar = 0;
/*---------------------------------------------------------------------------*/
interrupt(TIMERA1_VECTOR) timera1 (void) {
ENERGEST_ON(ENERGEST_TYPE_IRQ);
watchdog_start();
if(TAIV == 2) {
/* HW timer bug fix: Interrupt handler called before TR==CCR.
@ -63,9 +65,7 @@ interrupt(TIMERA1_VECTOR) timera1 (void) {
/* Make sure interrupt time is future */
do {
/* TACTL &= ~MC1;*/
TACCR1 += INTERVAL;
/* TACTL |= MC1;*/
++count;
/* Make sure the CLOCK_CONF_SECOND is a power of two, to ensure
@ -95,6 +95,8 @@ interrupt(TIMERA1_VECTOR) timera1 (void) {
LPM4_EXIT;
}*/
watchdog_stop();
ENERGEST_OFF(ENERGEST_TYPE_IRQ);
}
/*---------------------------------------------------------------------------*/
@ -142,7 +144,10 @@ clock_init(void)
/* TACTL = TASSEL1 | TACLR | ID_3; */
/* Select ACLK 32768Hz clock, divide by 2 */
TACTL = TASSEL0 | TACLR | ID_1;
/* TACTL = TASSEL0 | TACLR | ID_1;*/
/* Select ACLK 32768Hz clock */
TACTL = TASSEL0 | TACLR;
/* Initialize ccr1 to create the X ms interval. */
/* CCR1 interrupt enabled, interrupt occurs when timer equals CCR1. */

4
cpu/msp430/rtimer-arch.h
View file

@ -28,7 +28,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: rtimer-arch.h,v 1.8 2010/09/13 20:51:10 nifi Exp $
* $Id: rtimer-arch.h,v 1.9 2010/12/16 22:50:21 adamdunkels Exp $
*/
/**
@ -44,7 +44,7 @@
#include <io.h>
#include "sys/rtimer.h"
#define RTIMER_ARCH_SECOND (4096U*4)
#define RTIMER_ARCH_SECOND (4096U*8)
rtimer_clock_t rtimer_arch_now(void);