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gptimer: new driver for previous timer group

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morris
2022-01-02 16:14:17 +08:00
parent 79cc650d75
commit 5deb83b12d
24 changed files with 1771 additions and 1239 deletions
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24
components/hal/timer_hal_iram.c Normal file
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/*
* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "hal/timer_hal.h"
#include "hal/timer_ll.h"
void timer_hal_set_counter_value(timer_hal_context_t *hal, uint64_t load_val)
{
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// - `timer_ll_set_reload_value()` will only indicate the `reload_value`
// - `timer_ll_set_reload_value()` + ``timer_ll_trigger_soft_reload()` can update the HW counter value by software
// Therefore, after updating the HW counter value, we need to restore the previous `reload_value`.
// Attention: The following process should be protected by a lock in the driver layer.
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// save current reload value
uint64_t old_reload = timer_ll_get_reload_value(hal->dev, hal->timer_id);
timer_ll_set_reload_value(hal->dev, hal->timer_id, load_val);
timer_ll_trigger_soft_reload(hal->dev, hal->timer_id);
// restore the previous reload value
timer_ll_set_reload_value(hal->dev, hal->timer_id, old_reload);
}