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src/rp2_common/pico_time_adapter/include/pico/time_adapter.h
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/*
* Copyright (c) 2024 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef _PICO_TIME_ADAPTER_H
#define _PICO_TIME_ADAPTER_H
#include "hardware/irq.h"
#include "hardware/timer.h"
#include "pico/assert.h"
#define TA_NUM_TIMERS NUM_GENERIC_TIMERS
#define TA_NUM_TIMER_ALARMS NUM_ALARMS
#define timer_hw_from_timer(t) ((timer_hw_t *)(t))
static inline void ta_force_irq(alarm_pool_timer_t *timer, uint alarm_num) {
hw_set_bits(&timer_hw_from_timer(timer)->intf, 1u << alarm_num);
}
static inline void ta_clear_force_irq(alarm_pool_timer_t *timer, uint alarm_num) {
hw_clear_bits(&timer_hw_from_timer(timer)->intf, 1u << alarm_num);
}
static inline void ta_clear_irq(alarm_pool_timer_t *timer, uint alarm_num) {
timer_hw_from_timer(timer)->intr = 1u << alarm_num;
}
static inline alarm_pool_timer_t *ta_from_current_irq(uint *alarm_num) {
uint irq_num = __get_current_exception() - VTABLE_FIRST_IRQ;
alarm_pool_timer_t *timer = timer_get_instance(TIMER_NUM_FROM_IRQ(irq_num));
*alarm_num = TIMER_ALARM_NUM_FROM_IRQ(irq_num);
return timer;
}
static inline void ta_set_timeout(alarm_pool_timer_t *timer, uint alarm_num, int64_t target) {
timer_hw_from_timer(timer)->alarm[alarm_num] = (uint32_t) target;
}
static inline uint64_t ta_time_us_64(alarm_pool_timer_t *timer) {
return timer_time_us_64(timer_hw_from_timer(timer));
}
static inline void ta_enable_irq_handler(alarm_pool_timer_t *timer, uint alarm_num, irq_handler_t irq_handler) {
// disarm the timer
uint irq_num = timer_hardware_alarm_get_irq_num(timer, alarm_num);
timer_hw_from_timer(timer)->armed = 1u << alarm_num;
irq_set_exclusive_handler(irq_num, irq_handler);
irq_set_enabled(irq_num, true);
hw_set_bits(&timer_hw_from_timer(timer)->inte, 1u << alarm_num);
}
static inline void ta_disable_irq_handler(alarm_pool_timer_t *timer, uint alarm_num, irq_handler_t irq_handler) {
uint irq_num = timer_hardware_alarm_get_irq_num(timer, alarm_num);
hw_clear_bits(&timer_hw_from_timer(timer)->inte, 1u << alarm_num);
irq_set_enabled(irq_num, true);
irq_remove_handler(irq_num, irq_handler);
hardware_alarm_unclaim(alarm_num);
}
static inline void ta_hardware_alarm_claim(alarm_pool_timer_t *timer, uint hardware_alaram_num) {
timer_hardware_alarm_claim(timer_hw_from_timer(timer), hardware_alaram_num);
}
static inline int ta_hardware_alarm_claim_unused(alarm_pool_timer_t *timer, bool required) {
return timer_hardware_alarm_claim_unused(timer, required);
}
static inline alarm_pool_timer_t *ta_timer_instance(uint timer_num) {
return timer_get_instance(timer_num);
}
static inline uint ta_timer_num(alarm_pool_timer_t *timer) {
return timer_get_index(timer_hw_from_timer(timer));
}
static inline alarm_pool_timer_t *ta_default_timer_instance(void) {
return PICO_DEFAULT_TIMER_INSTANCE();
}
#endif
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