mirror of
https://github.com/RIOT-OS/RIOT.git
synced 2024-12-29 04:50:03 +01:00
102 lines
3.0 KiB
C
102 lines
3.0 KiB
C
/******************************************************************************
|
|
Copyright 2009, Freie Universitaet Berlin (FUB). All rights reserved.
|
|
|
|
These sources were developed at the Freie Universitaet Berlin, Computer Systems
|
|
and Telematics group (http://cst.mi.fu-berlin.de).
|
|
-------------------------------------------------------------------------------
|
|
This file is part of RIOT.
|
|
|
|
This program is free software: you can redistribute it and/or modify it under
|
|
the terms of the GNU General Public License as published by the Free Software
|
|
Foundation, either version 3 of the License, or (at your option) any later
|
|
version.
|
|
|
|
RIOT is distributed in the hope that it will be useful, but WITHOUT
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License along with
|
|
this program. If not, see http://www.gnu.org/licenses/ .
|
|
--------------------------------------------------------------------------------
|
|
For further information and questions please use the web site
|
|
http://scatterweb.mi.fu-berlin.de
|
|
and the mailinglist (subscription via web site)
|
|
scatterweb@lists.spline.inf.fu-berlin.de
|
|
*******************************************************************************/
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <cpu.h>
|
|
#include <hwtimer.h>
|
|
#include <hwtimer_arch.h>
|
|
|
|
// #define ENABLE_DEBUG (1)
|
|
#include <debug.h>
|
|
|
|
|
|
void (*int_handler)(int);
|
|
extern void timerA_init(void);
|
|
|
|
static void TA0_disable_interrupt(short timer) {
|
|
volatile unsigned int *ptr = &TA0CCTL0 + (timer);
|
|
*ptr &= ~(CCIFG);
|
|
*ptr &= ~(CCIE);
|
|
}
|
|
|
|
static void TA0_enable_interrupt(short timer) {
|
|
volatile unsigned int *ptr = &TA0CCTL0 + (timer);
|
|
*ptr |= CCIE;
|
|
*ptr &= ~(CCIFG);
|
|
}
|
|
|
|
static void TA0_set_nostart(unsigned long value, short timer) {
|
|
volatile unsigned int *ptr = &TA0CCR0 + (timer);
|
|
*ptr = value;
|
|
}
|
|
|
|
static void TA0_set(unsigned long value, short timer) {
|
|
DEBUG("Setting timer %u to %lu\n", timer, value);
|
|
TA0_set_nostart(value, timer);
|
|
TA0_enable_interrupt(timer);
|
|
}
|
|
|
|
void TA0_unset(short timer) {
|
|
volatile unsigned int *ptr = &TA0CCR0 + (timer);
|
|
TA0_disable_interrupt(timer);
|
|
*ptr = 0;
|
|
}
|
|
|
|
unsigned long hwtimer_arch_now() {
|
|
return TA0R;
|
|
}
|
|
|
|
void hwtimer_arch_init(void (*handler)(int), uint32_t fcpu) {
|
|
timerA_init();
|
|
int_handler = handler;
|
|
}
|
|
|
|
void hwtimer_arch_enable_interrupt(void) {
|
|
for (int i = 0; i < ARCH_MAXTIMERS; i++) {
|
|
TA0_enable_interrupt(i);
|
|
}
|
|
}
|
|
|
|
void hwtimer_arch_disable_interrupt(void) {
|
|
for (int i = 0; i < ARCH_MAXTIMERS; i++) {
|
|
TA0_disable_interrupt(i);
|
|
}
|
|
}
|
|
|
|
void hwtimer_arch_set(unsigned long offset, short timer) {
|
|
unsigned int value = hwtimer_arch_now() + offset;
|
|
hwtimer_arch_set_absolute(value, timer);
|
|
}
|
|
|
|
void hwtimer_arch_set_absolute(unsigned long value, short timer) {
|
|
TA0_set(value,timer);
|
|
}
|
|
|
|
void hwtimer_arch_unset(short timer) {
|
|
TA0_unset(timer);
|
|
}
|