feat: added getting status

include/zh_ac_dimmer.h

@@ -76,6 +76,15 @@ extern "C"
      */
     esp_err_t zh_ac_dimmer_set(uint8_t value);
 
+    /**
+     * @brief Get AC dimmer dimming value.
+     *
+     * @param[out] value Pointer to dimming value.
+     *
+     * @return ESP_OK if success or an error code otherwise.
+     */
+    esp_err_t zh_ac_dimmer_get(uint8_t *value);
+
 #ifdef __cplusplus
 }
 #endif

version.txt

@@ -1 +1 @@
-1.1.0
+1.2.0

zh_ac_dimmer.c

@@ -24,6 +24,7 @@ static volatile uint16_t _zero_cross_us = 0;
 static volatile uint8_t _dimmer_value = 0;
 static volatile bool _is_dimmer_work = false;
 static bool _is_initialized = false;
+static bool _is_prev_gpio_isr_handler = false;
 
 static esp_err_t _zh_ac_dimmer_validate_config(const zh_ac_dimmer_init_config_t *config);
 static esp_err_t _zh_ac_dimmer_gpio_init(const zh_ac_dimmer_init_config_t *config);
@@ -40,8 +41,14 @@ esp_err_t zh_ac_dimmer_init(const zh_ac_dimmer_init_config_t *config)
     err = _zh_ac_dimmer_gpio_init(config);
     ZH_ERROR_CHECK(err == ESP_OK, err, NULL, "AC dimmer initialization failed. GPIO initialization failed.");
     err = _zh_ac_dimmer_timer_init();
-    ZH_ERROR_CHECK(err == ESP_OK, err, gpio_isr_handler_remove(config->zero_cross_gpio); gpio_uninstall_isr_service();
-                   gpio_reset_pin(config->triac_gpio); gpio_reset_pin(config->zero_cross_gpio), "AC dimmer initialization failed. Timer initialization failed.");
+    if (_is_prev_gpio_isr_handler == true)
+    {
+        ZH_ERROR_CHECK(err == ESP_OK, err, gpio_isr_handler_remove(config->zero_cross_gpio); gpio_reset_pin(config->triac_gpio); gpio_reset_pin(config->zero_cross_gpio), "AC dimmer initialization failed. Timer initialization failed.");
+    }
+    else
+    {
+        ZH_ERROR_CHECK(err == ESP_OK, err, gpio_isr_handler_remove(config->zero_cross_gpio); gpio_uninstall_isr_service(); gpio_reset_pin(config->triac_gpio); gpio_reset_pin(config->zero_cross_gpio), "AC dimmer initialization failed. Timer initialization failed.");
+    }
     _init_config = *config;
     _is_initialized = true;
     ZH_LOGI("AC dimmer initialization completed successfully.");
@@ -56,7 +63,10 @@ esp_err_t zh_ac_dimmer_deinit(void)
     gptimer_disable(_dimmer_timer);
     gptimer_del_timer(_dimmer_timer);
     gpio_isr_handler_remove(_init_config.zero_cross_gpio);
+    if (_is_prev_gpio_isr_handler == false)
+    {
         gpio_uninstall_isr_service();
+    }
     gpio_reset_pin(_init_config.triac_gpio);
     gpio_reset_pin(_init_config.zero_cross_gpio);
     _is_dimmer_work = false;
@@ -99,6 +109,16 @@ esp_err_t zh_ac_dimmer_set(uint8_t value)
     return ESP_OK;
 }
 
+esp_err_t zh_ac_dimmer_get(uint8_t *value)
+{
+    ZH_LOGI("AC dimmer getting status begin.");
+    ZH_ERROR_CHECK(value != NULL, ESP_ERR_INVALID_ARG, NULL, "AC dimmer getting status failed. Value is NULL.");
+    ZH_ERROR_CHECK(_is_initialized == true, ESP_ERR_INVALID_STATE, NULL, "AC dimmer getting status failed. AC dimmer is not initialized.");
+    *value = _dimmer_value;
+    ZH_LOGI("AC dimmer getting status completed successfully.");
+    return ESP_OK;
+}
+
 static esp_err_t _zh_ac_dimmer_validate_config(const zh_ac_dimmer_init_config_t *config)
 {
     ZH_ERROR_CHECK(config != NULL, ESP_ERR_INVALID_ARG, NULL, "Initial config is NULL.");
@@ -130,9 +150,20 @@ static esp_err_t _zh_ac_dimmer_gpio_init(const zh_ac_dimmer_init_config_t *confi
     err = gpio_config(&zero_cross_gpio_config);
     ZH_ERROR_CHECK(err == ESP_OK, err, gpio_reset_pin(config->triac_gpio), "Zero cross GPIO configuration failed.");
     err = gpio_install_isr_service(ESP_INTR_FLAG_LOWMED);
-    ZH_ERROR_CHECK(err == ESP_OK, err, gpio_reset_pin(config->triac_gpio); gpio_reset_pin(config->zero_cross_gpio), "Failed install isr service.")
+    ZH_ERROR_CHECK(err == ESP_OK || err == ESP_ERR_INVALID_STATE, err, gpio_reset_pin(config->triac_gpio); gpio_reset_pin(config->zero_cross_gpio), "Failed install isr service.")
+    if (err == ESP_ERR_INVALID_STATE)
+    {
+        _is_prev_gpio_isr_handler = true;
+    }
     err = gpio_isr_handler_add(config->zero_cross_gpio, _zh_ac_dimmer_isr_handler, NULL);
+    if (_is_prev_gpio_isr_handler == true)
+    {
+        ZH_ERROR_CHECK(err == ESP_OK, err, gpio_reset_pin(config->triac_gpio); gpio_reset_pin(config->zero_cross_gpio), "Failed add isr handler.");
+    }
+    else
+    {
         ZH_ERROR_CHECK(err == ESP_OK, err, gpio_uninstall_isr_service(); gpio_reset_pin(config->triac_gpio); gpio_reset_pin(config->zero_cross_gpio), "Failed add isr handler.");
+    }
     return ESP_OK;
 }
 
@@ -183,8 +214,8 @@ static void IRAM_ATTR _zh_ac_dimmer_isr_handler(void *arg)
         }
         _alarm_config.alarm_count = (uint64_t)(((_current_period_us / 110) * (100 - _dimmer_value)) + _zero_cross_us);
         _alarm_config.flags.auto_reload_on_alarm = false;
-        gptimer_set_alarm_action(_dimmer_timer, &_alarm_config); // This function is allowed to run within ISR context.
-        gptimer_start(_dimmer_timer);                            // This function is allowed to run within ISR context.
+        gptimer_set_alarm_action(_dimmer_timer, &_alarm_config);
+        gptimer_start(_dimmer_timer);
     }
 }