kopia lustrzana https://github.com/espressif/esp-idf
50 wiersze
1.4 KiB
C
50 wiersze
1.4 KiB
C
/*
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* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "ulp_lp_core_lp_timer_shared.h"
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#include "hal/lp_timer_ll.h"
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#define TIMER_ID 1
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static struct {
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lp_timer_dev_t *dev;
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} lp_timer_context = { .dev = &LP_TIMER };
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static void lp_timer_hal_set_alarm_target(uint64_t value)
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{
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lp_timer_ll_clear_lp_alarm_intr_status(lp_timer_context.dev);
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lp_timer_ll_set_alarm_target(lp_timer_context.dev, TIMER_ID, value);
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lp_timer_ll_set_target_enable(lp_timer_context.dev, TIMER_ID, true);
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}
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static uint64_t lp_timer_hal_get_cycle_count(void)
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{
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lp_timer_ll_counter_snapshot(lp_timer_context.dev);
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uint32_t lo = lp_timer_ll_get_counter_value_low(lp_timer_context.dev, 0);
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uint32_t hi = lp_timer_ll_get_counter_value_high(lp_timer_context.dev, 0);
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lp_timer_counter_value_t result = {
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.lo = lo,
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.hi = hi
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};
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return result.val;
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}
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void ulp_lp_core_lp_timer_set_wakeup_time(uint64_t sleep_duration_us)
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{
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uint64_t cycle_cnt = lp_timer_hal_get_cycle_count();
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uint64_t alarm_target = cycle_cnt + lp_timer_ll_time_to_count(sleep_duration_us);
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lp_timer_hal_set_alarm_target(alarm_target);
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}
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void ulp_lp_core_lp_timer_disable(void)
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{
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lp_timer_ll_set_target_enable(lp_timer_context.dev, TIMER_ID, false);
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lp_timer_ll_clear_lp_alarm_intr_status(lp_timer_context.dev);
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}
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