aZholtikov/zh_ac_dimmer
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perf: updated error checks

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aZholtikov committed 2026-10-11 07:46:45 +03:00
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commit a83e6c0dc5
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README.md
+4 -15
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@@ -2,21 +2,10 @@
## Features ## Features
1. Zero-crossing detection via GPIO interrupt for precise phase-angle control. 1. Zero-crossing detection via GPIO interrupt (positive edge) with filtering of spurious interrupts for precise phase-angle control.
2. TRIAC gate control through ESP-IDF gptimer with configurable dimming level (0–100%). 2. TRIAC gate control through ESP-IDF gptimer (1 MHz resolution) with configurable dimming level (0–100%).
3. IRAM-safe ISR and callback functions for reliable operation. 3. Designed for 400 Hz AC mains (1250 us half-period), with timing constants adjustable for other frequencies.
4. Thread-safe start/stop/set/get API. 4. Handle-based API: init/deinit (with full GPIO, ISR and timer cleanup) and start/stop/set/get.
## Note
Enable the following settings in menuconfig:
```text
GPIO_CTRL_FUNC_IN_IRAM
CONFIG_GPTIMER_ISR_HANDLER_IN_IRAM
CONFIG_GPTIMER_CTRL_FUNC_IN_IRAM
CONFIG_GPTIMER_ISR_CACHE_SAFE
```
## Using ## Using
include/zh_ac_dimmer.h
+9 -8
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@@ -12,9 +12,9 @@
* - Zero-crossing detection via GPIO interrupt * - Zero-crossing detection via GPIO interrupt
* - TRIAC gate control through ESP-IDF gptimer * - TRIAC gate control through ESP-IDF gptimer
* - Configurable dimming level (0–100 %) * - Configurable dimming level (0–100 %)
* - Thread-safe start/stop/set/get API * - Start/stop/set/get API
* *
* @note The driver assumes a 400 Hz AC mains frequency (1250 µs period). * @note The driver assumes a 400 Hz AC mains frequency (1250 us period).
* Adjust the timing constants in `zh_ac_dimmer.c` for other frequencies. * Adjust the timing constants in `zh_ac_dimmer.c` for other frequencies.
* @warning This module interacts with mains voltage. Incorrect wiring or * @warning This module interacts with mains voltage. Incorrect wiring or
* insufficient isolation can cause electric shock or hardware damage. * insufficient isolation can cause electric shock or hardware damage.
@@ -23,6 +23,8 @@
#pragma once #pragma once
#include "stdint.h"
#include "esp_heap_caps.h"
#include "freertos/FreeRTOS.h" #include "freertos/FreeRTOS.h"
#include "freertos/task.h" #include "freertos/task.h"
#include "driver/gptimer.h" #include "driver/gptimer.h"
@@ -68,8 +70,7 @@ extern "C"
* positive-edge interrupt), installs the ISR service, and creates the * positive-edge interrupt), installs the ISR service, and creates the
* gptimer instance. * gptimer instance.
* *
* @param[in] config Pointer to the initialization configuration structure. * @param[in] config Pointer to the initialization configuration structure (may point to a temporary variable, not stored internally)
* May point to a temporary variable (not stored internally)
* @param[out] handle Pointer to receive the created dimmer handle (must be NULL) * @param[out] handle Pointer to receive the created dimmer handle (must be NULL)
* *
* @return ESP_OK on success * @return ESP_OK on success
@@ -87,7 +88,7 @@ extern "C"
* the GPIO pins to input mode, frees the dimmer handle, and sets the * the GPIO pins to input mode, frees the dimmer handle, and sets the
* output handle to NULL. * output handle to NULL.
* *
* @param[in,out] handle Pointer to the dimmer handle (must not be NULL) * @param[in,out] handle Pointer to the dimmer handle, set to NULL on return (must not be NULL)
* *
* @return ESP_OK on success * @return ESP_OK on success
* @return ESP_ERR_INVALID_ARG if handle or *handle is NULL * @return ESP_ERR_INVALID_ARG if handle or *handle is NULL
@@ -104,7 +105,7 @@ extern "C"
* Enables the dimmer so that zero-crossing events trigger TRIAC firing * Enables the dimmer so that zero-crossing events trigger TRIAC firing
* according to the current dimming value. * according to the current dimming value.
* *
* @param[in,out] handle Pointer to the dimmer handle (must not be NULL) * @param[in] handle Pointer to the dimmer handle (must not be NULL)
* *
* @return ESP_OK on success * @return ESP_OK on success
* @return ESP_ERR_INVALID_ARG if handle or *handle is NULL * @return ESP_ERR_INVALID_ARG if handle or *handle is NULL
@@ -117,7 +118,7 @@ extern "C"
* Disables TRIAC firing on zero-crossing events. The dimmer can be * Disables TRIAC firing on zero-crossing events. The dimmer can be
* restarted with `zh_ac_dimmer_start()`. * restarted with `zh_ac_dimmer_start()`.
* *
* @param[in,out] handle Pointer to the dimmer handle (must not be NULL) * @param[in] handle Pointer to the dimmer handle (must not be NULL)
* *
* @return ESP_OK on success * @return ESP_OK on success
* @return ESP_ERR_INVALID_ARG if handle or *handle is NULL * @return ESP_ERR_INVALID_ARG if handle or *handle is NULL
@@ -131,7 +132,7 @@ extern "C"
* zero-crossing event. * zero-crossing event.
* *
* @param[in] handle Pointer to the dimmer handle (must not be NULL) * @param[in] handle Pointer to the dimmer handle (must not be NULL)
* @param[in] value Dimming level from 0 (off) to 100 (full brightness) * @param[in] value Dimming level from 0 (off) to 100 (full brightness) (must be <= 100)
* *
* @return ESP_OK on success * @return ESP_OK on success
* @return ESP_ERR_INVALID_ARG if handle, *handle, or value is invalid * @return ESP_ERR_INVALID_ARG if handle, *handle, or value is invalid
zh_ac_dimmer.c
+41 -31
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@@ -13,6 +13,13 @@ static const char *TAG = "zh_ac_dimmer";
return err; \ return err; \
} }
#define ZH_ERROR_CHECK_CONT(cond, cleanup, msg, ...) \
if (!(cond)) \
{ \
ZH_LOGE(msg, ESP_FAIL, ##__VA_ARGS__); \
cleanup; \
}
/** /**
* @brief Internal handle for AC dimmer instance. * @brief Internal handle for AC dimmer instance.
* *
@@ -24,7 +31,7 @@ struct _zh_ac_dimmer_handle_t
gpio_num_t zero_cross_gpio; /*!< GPIO pin for zero-crossing detection input */ gpio_num_t zero_cross_gpio; /*!< GPIO pin for zero-crossing detection input */
gpio_num_t triac_gpio; /*!< GPIO pin for TRIAC gate control output */ gpio_num_t triac_gpio; /*!< GPIO pin for TRIAC gate control output */
gptimer_handle_t dimmer_timer_handle; /*!< gptimer instance used for TRIAC firing delay */ gptimer_handle_t dimmer_timer_handle; /*!< gptimer instance used for TRIAC firing delay */
uint64_t prev_zero_crossing_us; /*!< Timestamp of the last zero-crossing event (µs) */ uint64_t prev_zero_crossing_us; /*!< Timestamp of the last zero-crossing event (us) */
uint8_t dimmer_value; /*!< Current dimming level (0 = off, 100 = full) */ uint8_t dimmer_value; /*!< Current dimming level (0 = off, 100 = full) */
bool is_dimmer_work; /*!< `true` when the dimmer is actively running */ bool is_dimmer_work; /*!< `true` when the dimmer is actively running */
}; };
@@ -65,9 +72,10 @@ static esp_err_t _zh_ac_dimmer_gpio_init(const zh_ac_dimmer_init_config_t *confi
/** /**
* @brief Initialize the gptimer used for TRIAC firing delay. * @brief Initialize the gptimer used for TRIAC firing delay.
* *
* Creates a new gptimer with a 1 MHz resolution (1 µs steps), registers * Creates a new gptimer with a 1 MHz resolution (1 us steps) and registers
* the alarm callback that fires the TRIAC, enables the timer, and starts * the alarm callback that fires the TRIAC. The timer is enabled but not
* it in auto-reload mode. * started; it is armed and started from the zero-crossing ISR for each
* half-cycle.
* *
* @param handle Pointer to the dimmer handle (timer handle stored here) * @param handle Pointer to the dimmer handle (timer handle stored here)
* *
@@ -79,13 +87,16 @@ static esp_err_t _zh_ac_dimmer_timer_init(zh_ac_dimmer_handle_t *handle);
/** /**
* @brief ISR handler for zero-crossing detection. * @brief ISR handler for zero-crossing detection.
* *
* Executed on every positive edge of the zero-crossing signal. Resets the * Executed on every positive edge of the zero-crossing signal. Ignores
* TRIAC gate low, updates the last zero-crossing timestamp, and schedules * spurious interrupts that arrive sooner than 90% of the expected
* a gptimer alarm to fire the TRIAC at the appropriate phase angle. * zero-crossing period (1250 us at 400 Hz). Resets the TRIAC gate low and
* updates the last zero-crossing timestamp. Depending on the dimming level:
* *
* - At dimming = 0: TRIAC stays off (gate held low). * - At dimming = 0: TRIAC stays off (gate held low).
* - At dimming = 100: TRIAC fires immediately (gate set high). * - At dimming = 100: TRIAC fires immediately (gate set high).
* - At dimming 1–99: gptimer alarm fires after a calculated delay. * - At dimming 1–99: gptimer alarm fires after a calculated delay. The alarm
* count is mapped from the dimming value with a 330 us base offset
* (50% of the zero-crossing period, measured with a logic analyzer).
* *
* @param arg Pointer to the dimmer handle (passed from GPIO ISR) * @param arg Pointer to the dimmer handle (passed from GPIO ISR)
*/ */
@@ -101,24 +112,23 @@ static void _zh_ac_dimmer_isr_handler(void *arg);
* @param edata Event data (unused) * @param edata Event data (unused)
* @param user_ctx Pointer to the dimmer handle * @param user_ctx Pointer to the dimmer handle
* *
* @return `false` to indicate that the timer should not auto-restart * @return false to indicate that no higher-priority task needs to be woken
*/ */
static bool _zh_ac_dimmer_timer_on_alarm_cb(gptimer_handle_t timer, const gptimer_alarm_event_data_t *edata, void *user_ctx); static bool _zh_ac_dimmer_timer_on_alarm_cb(gptimer_handle_t timer, const gptimer_alarm_event_data_t *edata, void *user_ctx);
esp_err_t zh_ac_dimmer_init(const zh_ac_dimmer_init_config_t *config, zh_ac_dimmer_handle_t **handle) esp_err_t zh_ac_dimmer_init(const zh_ac_dimmer_init_config_t *config, zh_ac_dimmer_handle_t **handle)
{ {
ZH_LOGI("AC dimmer initialization started."); ZH_LOGI("AC dimmer initialization started.");
ZH_ERROR_CHECK(config != NULL && handle != NULL, ESP_ERR_INVALID_ARG, NULL, "AC dimmer initialization failed. Invalid argument."); ZH_ERROR_CHECK(config != NULL && handle != NULL, ESP_ERR_INVALID_ARG, NULL, "AC dimmer initialization failed. Invalid argument.");
ZH_ERROR_CHECK(*handle == NULL, ESP_ERR_INVALID_STATE, NULL, "AC dimmer initialization failed. AC dimmer is already initialized."); ZH_ERROR_CHECK(*handle == NULL, ESP_ERR_INVALID_STATE, NULL, "AC dimmer initialization failed. AC dimmer is already initialized.");
*handle = heap_caps_calloc(1, sizeof(zh_ac_dimmer_handle_t), MALLOC_CAP_8BIT); *handle = heap_caps_calloc(1, sizeof(zh_ac_dimmer_handle_t), MALLOC_CAP_8BIT);
ZH_ERROR_CHECK(*handle != NULL, ESP_ERR_NO_MEM, NULL, "AC dimmer initialization failed. Failed to allocate 160X handle."); ZH_ERROR_CHECK(*handle != NULL, ESP_ERR_NO_MEM, NULL, "AC dimmer initialization failed. Failed to allocate handle.");
ZH_ERROR_CHECK(_zh_ac_dimmer_validate_config(config) == ESP_OK, ESP_FAIL, heap_caps_free(*handle); *handle = NULL, "AC dimmer initialization failed. Initial configuration check failed."); ZH_ERROR_CHECK(_zh_ac_dimmer_validate_config(config) == ESP_OK, ESP_FAIL, heap_caps_free(*handle); *handle = NULL, "AC dimmer initialization failed. Initial configuration check failed.");
ZH_ERROR_CHECK(_zh_ac_dimmer_gpio_init(config, *handle) == ESP_OK, ESP_FAIL, heap_caps_free(*handle); *handle = NULL, "AC dimmer initialization failed. GPIO initialization failed."); ZH_ERROR_CHECK(_zh_ac_dimmer_gpio_init(config, *handle) == ESP_OK, ESP_FAIL, heap_caps_free(*handle); *handle = NULL, "AC dimmer initialization failed. GPIO initialization failed.");
ZH_ERROR_CHECK(_zh_ac_dimmer_timer_init(*handle) == ESP_OK, ESP_FAIL, ZH_ERROR_CHECK(_zh_ac_dimmer_timer_init(*handle) == ESP_OK, ESP_FAIL,
{ZH_ERROR_CHECK(gpio_isr_handler_remove(config->zero_cross_gpio) == ESP_OK, ESP_FAIL, NULL, "Remove GPIO isr handler failed.")}; {ZH_ERROR_CHECK_CONT(gpio_isr_handler_remove(config->zero_cross_gpio) == ESP_OK, NULL, "Remove GPIO isr handler failed.")};
{ZH_ERROR_CHECK(gpio_reset_pin(config->triac_gpio) == ESP_OK, ESP_FAIL, NULL, "Reset GPIO failed.")}; {ZH_ERROR_CHECK_CONT(gpio_reset_pin(config->triac_gpio) == ESP_OK, NULL, "Reset GPIO failed.")};
{ZH_ERROR_CHECK(gpio_reset_pin(config->zero_cross_gpio) == ESP_OK, ESP_FAIL, NULL, "Reset GPIO failed.")}; {ZH_ERROR_CHECK_CONT(gpio_reset_pin(config->zero_cross_gpio) == ESP_OK, NULL, "Reset GPIO failed.")};
heap_caps_free(*handle); *handle = NULL, "AC dimmer initialization failed. Timer initialization failed."); heap_caps_free(*handle); *handle = NULL, "AC dimmer initialization failed. Timer initialization failed.");
ZH_LOGI("AC dimmer initialization completed successfully."); ZH_LOGI("AC dimmer initialization completed successfully.");
return ESP_OK; return ESP_OK;
@@ -128,12 +138,12 @@ esp_err_t zh_ac_dimmer_deinit(zh_ac_dimmer_handle_t **handle)
{ {
ZH_LOGI("AC dimmer deinitialization started."); ZH_LOGI("AC dimmer deinitialization started.");
ZH_ERROR_CHECK(handle != NULL && *handle != NULL, ESP_ERR_INVALID_ARG, NULL, "AC dimmer deinitialization failed. Invalid argument."); ZH_ERROR_CHECK(handle != NULL && *handle != NULL, ESP_ERR_INVALID_ARG, NULL, "AC dimmer deinitialization failed. Invalid argument.");
ZH_ERROR_CHECK(gptimer_stop((*handle)->dimmer_timer_handle) == ESP_OK, ESP_FAIL, NULL, "AC dimmer deinitialization failed. Timer stop fail."); ZH_ERROR_CHECK_CONT(gptimer_stop((*handle)->dimmer_timer_handle) == ESP_OK, NULL, "AC dimmer deinitialization failed. Timer stop fail.");
ZH_ERROR_CHECK(gptimer_disable((*handle)->dimmer_timer_handle) == ESP_OK, ESP_FAIL, NULL, "AC dimmer deinitialization failed. Timer disable fail."); ZH_ERROR_CHECK_CONT(gptimer_disable((*handle)->dimmer_timer_handle) == ESP_OK, NULL, "AC dimmer deinitialization failed. Timer disable fail.");
ZH_ERROR_CHECK(gptimer_del_timer((*handle)->dimmer_timer_handle) == ESP_OK, ESP_FAIL, NULL, "AC dimmer deinitialization failed. Timer delete fail."); ZH_ERROR_CHECK_CONT(gptimer_del_timer((*handle)->dimmer_timer_handle) == ESP_OK, NULL, "AC dimmer deinitialization failed. Timer delete fail.");
ZH_ERROR_CHECK(gpio_isr_handler_remove((*handle)->zero_cross_gpio) == ESP_OK, ESP_FAIL, NULL, "AC dimmer deinitialization failed. Remove GPIO isr handler failed."); ZH_ERROR_CHECK_CONT(gpio_isr_handler_remove((*handle)->zero_cross_gpio) == ESP_OK, NULL, "AC dimmer deinitialization failed. Remove GPIO isr handler failed.");
ZH_ERROR_CHECK(gpio_reset_pin((*handle)->triac_gpio) == ESP_OK, ESP_FAIL, NULL, "AC dimmer deinitialization failed. Reset GPIO failed."); ZH_ERROR_CHECK_CONT(gpio_reset_pin((*handle)->triac_gpio) == ESP_OK, NULL, "AC dimmer deinitialization failed. Reset GPIO failed.");
ZH_ERROR_CHECK(gpio_reset_pin((*handle)->zero_cross_gpio) == ESP_OK, ESP_FAIL, NULL, "AC dimmer deinitialization failed. Reset GPIO failed."); ZH_ERROR_CHECK_CONT(gpio_reset_pin((*handle)->zero_cross_gpio) == ESP_OK, NULL, "AC dimmer deinitialization failed. Reset GPIO failed.");
heap_caps_free(*handle); heap_caps_free(*handle);
*handle = NULL; *handle = NULL;
ZH_LOGI("AC dimmer deinitialization completed successfully."); ZH_LOGI("AC dimmer deinitialization completed successfully.");
@@ -204,16 +214,16 @@ static esp_err_t _zh_ac_dimmer_gpio_init(const zh_ac_dimmer_init_config_t *confi
.pull_up_en = GPIO_PULLUP_DISABLE, .pull_up_en = GPIO_PULLUP_DISABLE,
}; };
ZH_ERROR_CHECK(gpio_config(&zero_cross_gpio_config) == ESP_OK, ESP_FAIL, ZH_ERROR_CHECK(gpio_config(&zero_cross_gpio_config) == ESP_OK, ESP_FAIL,
{ZH_ERROR_CHECK(gpio_reset_pin(config->triac_gpio) == ESP_OK, ESP_FAIL, NULL, "Reset GPIO failed.")}, "Zero cross GPIO configuration failed."); {ZH_ERROR_CHECK_CONT(gpio_reset_pin(config->triac_gpio) == ESP_OK, NULL, "Reset GPIO failed.")}, "Zero cross GPIO configuration failed.");
esp_err_t err = gpio_install_isr_service(ESP_INTR_FLAG_LOWMED); esp_err_t err = gpio_install_isr_service(ESP_INTR_FLAG_LOWMED);
ZH_ERROR_CHECK(err == ESP_OK || err == ESP_ERR_INVALID_STATE, ESP_FAIL, ZH_ERROR_CHECK(err == ESP_OK || err == ESP_ERR_INVALID_STATE, ESP_FAIL,
{ZH_ERROR_CHECK(gpio_reset_pin(config->triac_gpio) == ESP_OK, ESP_FAIL, NULL, "Reset GPIO failed.")}; {ZH_ERROR_CHECK_CONT(gpio_reset_pin(config->triac_gpio) == ESP_OK, NULL, "Reset GPIO failed.")};
{ZH_ERROR_CHECK(gpio_reset_pin(config->zero_cross_gpio) == ESP_OK, ESP_FAIL, NULL, "Reset GPIO failed.")}, "Failed install isr service.") {ZH_ERROR_CHECK_CONT(gpio_reset_pin(config->zero_cross_gpio) == ESP_OK, NULL, "Reset GPIO failed.")}, "Failed install isr service.")
ZH_ERROR_CHECK(gpio_isr_handler_add(config->zero_cross_gpio, _zh_ac_dimmer_isr_handler, handle) == ESP_OK, ESP_FAIL,
{ZH_ERROR_CHECK(gpio_reset_pin(config->triac_gpio) == ESP_OK, ESP_FAIL, NULL, "Reset GPIO failed.")};
{ZH_ERROR_CHECK(gpio_reset_pin(config->zero_cross_gpio) == ESP_OK, ESP_FAIL, NULL, "Reset GPIO failed.")}, "Failed add isr handler.");
handle->triac_gpio = config->triac_gpio; handle->triac_gpio = config->triac_gpio;
handle->zero_cross_gpio = config->zero_cross_gpio; handle->zero_cross_gpio = config->zero_cross_gpio;
ZH_ERROR_CHECK(gpio_isr_handler_add(config->zero_cross_gpio, _zh_ac_dimmer_isr_handler, handle) == ESP_OK, ESP_FAIL,
{ZH_ERROR_CHECK_CONT(gpio_reset_pin(config->triac_gpio) == ESP_OK, NULL, "Reset GPIO failed.")};
{ZH_ERROR_CHECK_CONT(gpio_reset_pin(config->zero_cross_gpio) == ESP_OK, NULL, "Reset GPIO failed.")}, "Failed add isr handler.");
return ESP_OK; return ESP_OK;
} }
@@ -229,13 +239,13 @@ static esp_err_t _zh_ac_dimmer_timer_init(zh_ac_dimmer_handle_t *handle)
.on_alarm = _zh_ac_dimmer_timer_on_alarm_cb, .on_alarm = _zh_ac_dimmer_timer_on_alarm_cb,
}; };
ZH_ERROR_CHECK(gptimer_register_event_callbacks(handle->dimmer_timer_handle, &cbs, handle) == ESP_OK, ESP_FAIL, ZH_ERROR_CHECK(gptimer_register_event_callbacks(handle->dimmer_timer_handle, &cbs, handle) == ESP_OK, ESP_FAIL,
{ZH_ERROR_CHECK(gptimer_del_timer(handle->dimmer_timer_handle) == ESP_OK, ESP_FAIL, NULL, "Timer delete fail.")}, "Failed register dimmer timer event callbacks."); {ZH_ERROR_CHECK_CONT(gptimer_del_timer(handle->dimmer_timer_handle) == ESP_OK, NULL, "Timer delete fail.")}, "Failed register dimmer timer event callbacks.");
ZH_ERROR_CHECK(gptimer_enable(handle->dimmer_timer_handle) == ESP_OK, ESP_FAIL, ZH_ERROR_CHECK(gptimer_enable(handle->dimmer_timer_handle) == ESP_OK, ESP_FAIL,
{ZH_ERROR_CHECK(gptimer_del_timer(handle->dimmer_timer_handle) == ESP_OK, ESP_FAIL, NULL, "Timer delete fail.")}, "Failed enable dimmer timer."); {ZH_ERROR_CHECK_CONT(gptimer_del_timer(handle->dimmer_timer_handle) == ESP_OK, NULL, "Timer delete fail.")}, "Failed enable dimmer timer.");
return ESP_OK; return ESP_OK;
} }
static void IRAM_ATTR _zh_ac_dimmer_isr_handler(void *arg) static void _zh_ac_dimmer_isr_handler(void *arg)
{ {
zh_ac_dimmer_handle_t *handle = (zh_ac_dimmer_handle_t *)arg; zh_ac_dimmer_handle_t *handle = (zh_ac_dimmer_handle_t *)arg;
uint64_t _current_us = esp_timer_get_time(); uint64_t _current_us = esp_timer_get_time();
@@ -256,7 +266,7 @@ static void IRAM_ATTR _zh_ac_dimmer_isr_handler(void *arg)
gptimer_alarm_config_t _alarm_config = {0}; gptimer_alarm_config_t _alarm_config = {0};
// Calculate alarm delay: maps dimming (1–99) to a µs value. // Calculate alarm delay: maps dimming (1–99) to a µs value.
// 330 µs is the base offset (50% of zero-crossing period, measured with a logic analyzer). // 330 µs is the base offset (50% of zero-crossing period, measured with a logic analyzer).
_alarm_config.alarm_count = (uint64_t)((((1250 - 330) / 100) * (100 - handle->dimmer_value)) + 330); _alarm_config.alarm_count = (uint64_t)((((1250 - 330) * (100 - handle->dimmer_value)) / 100) + 330);
_alarm_config.flags.auto_reload_on_alarm = false; _alarm_config.flags.auto_reload_on_alarm = false;
gptimer_set_alarm_action(handle->dimmer_timer_handle, &_alarm_config); gptimer_set_alarm_action(handle->dimmer_timer_handle, &_alarm_config);
gptimer_start(handle->dimmer_timer_handle); gptimer_start(handle->dimmer_timer_handle);
@@ -265,7 +275,7 @@ static void IRAM_ATTR _zh_ac_dimmer_isr_handler(void *arg)
} }
} }
static bool IRAM_ATTR _zh_ac_dimmer_timer_on_alarm_cb(gptimer_handle_t timer, const gptimer_alarm_event_data_t *edata, void *user_ctx) static bool _zh_ac_dimmer_timer_on_alarm_cb(gptimer_handle_t timer, const gptimer_alarm_event_data_t *edata, void *user_ctx)
{ {
(void)edata; (void)edata;
zh_ac_dimmer_handle_t *handle = (zh_ac_dimmer_handle_t *)user_ctx; zh_ac_dimmer_handle_t *handle = (zh_ac_dimmer_handle_t *)user_ctx;