doc: updated example

README.md

@@ -60,7 +60,7 @@ One expander on bus. All GPIO's as output (except P0 - input). Interrupt is enab
 i2c_master_bus_handle_t i2c_bus_handle = NULL;
 zh_pcf8574_handle_t pcf8574_handle = {0};
 
-void zh_pcf8574_event_handler(void *arg, esp_event_base_t event_base, int32_t event_id, void *event_data); // Required only if used input GPIO interrupts.
+void zh_pcf8574_event_handler(void *arg, esp_event_base_t event_base, int32_t event_id, void *event_data);
 
 void print_gpio_status(const char *message, uint8_t reg)
 {
@@ -86,23 +86,23 @@ void app_main(void)
         .flags.enable_internal_pullup = true,
     };
     i2c_new_master_bus(&i2c_bus_config, &i2c_bus_handle);
-    esp_event_loop_create_default();                                                                          // Required only if used input GPIO interrupts.
-    esp_event_handler_instance_register(ZH_PCF8574, ESP_EVENT_ANY_ID, &zh_pcf8574_event_handler, NULL, NULL); // Required only if used input GPIO interrupts.
-    zh_pcf8574_init_config_t config = ZH_PCF8574_INIT_CONFIG_DEFAULT();
-    config.i2c_handle = i2c_bus_handle;
-    config.i2c_address = 0x38;
-    config.p0_gpio_work_mode = true;     // Required only for input GPIO.
-    config.interrupt_gpio = GPIO_NUM_14; // Required only if used input GPIO interrupts.
-    zh_pcf8574_init(&config, &pcf8574_handle);
+    esp_event_loop_create_default();
+    esp_event_handler_instance_register(ZH_PCF8574, ESP_EVENT_ANY_ID, &zh_pcf8574_event_handler, NULL, NULL);
+    zh_pcf8574_init_config_t pcf8574_init_config = ZH_PCF8574_INIT_CONFIG_DEFAULT();
+    pcf8574_init_config.i2c_handle = i2c_bus_handle;
+    pcf8574_init_config.i2c_address = 0x38;
+    pcf8574_init_config.p0_gpio_work_mode = true;
+    pcf8574_init_config.interrupt_gpio = GPIO_NUM_14;
+    zh_pcf8574_init(&pcf8574_init_config, &pcf8574_handle);
     uint8_t reg = 0;
     zh_pcf8574_read(&pcf8574_handle, &reg);
     print_gpio_status("GPIO status: ", reg);
     printf("Set P7 to 1, P1 to 1 and P0 to 0.\n");
-    zh_pcf8574_write(&pcf8574_handle, 0b10000010); // GPIO P0 will not be changed because it is operating in input mode.
+    zh_pcf8574_write(&pcf8574_handle, 0b10000010);
     zh_pcf8574_read(&pcf8574_handle, &reg);
     print_gpio_status("GPIO status: ", reg);
     printf("Sets P0 to 0.\n");
-    zh_pcf8574_write_gpio(&pcf8574_handle, 0, false); // GPIO P0 will not be changed because it is operating in input mode.
+    zh_pcf8574_write_gpio(&pcf8574_handle, 0, false);
     bool gpio = 0;
     zh_pcf8574_read_gpio(&pcf8574_handle, 0, &gpio);
     printf("P0 status: %d.\n", gpio);
@@ -128,7 +128,7 @@ void app_main(void)
     }
 }
 
-void zh_pcf8574_event_handler(void *arg, esp_event_base_t event_base, int32_t event_id, void *event_data) // Required only if used input GPIO interrupts.
+void zh_pcf8574_event_handler(void *arg, esp_event_base_t event_base, int32_t event_id, void *event_data)
 {
     zh_pcf8574_event_on_isr_t *event = event_data;
     printf("Interrupt happened on device address 0x%02X on GPIO number %d at level %d.\n", event->i2c_address, event->gpio_number, event->gpio_level);

version.txt

@@ -1 +1 @@
-2.3.0
+2.3.2

zh_pcf8574.c

@@ -20,7 +20,6 @@ static uint8_t _interrupt_gpio = GPIO_NUM_MAX;
 static const uint8_t _gpio_matrix[8] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80};
 static bool _is_prev_gpio_isr_service = false;
 static zh_pcf8574_stats_t _stats = {0};
-static uint8_t _expander_counter = 0;
 
 static zh_vector_t _vector = {0};
 
@@ -75,7 +74,6 @@ esp_err_t zh_pcf8574_init(const zh_pcf8574_init_config_t *config, zh_pcf8574_han
         }
     }
     handle->is_initialized = true;
-    ++_expander_counter;
     ZH_LOGI("PCF8574 initialization completed successfully.");
     return ESP_OK;
 }
@@ -101,7 +99,9 @@ esp_err_t zh_pcf8574_deinit(zh_pcf8574_handle_t *handle)
             gpio_isr_handler_remove((gpio_num_t)_interrupt_gpio);
             gpio_reset_pin((gpio_num_t)_interrupt_gpio);
             zh_vector_free(&_vector);
-            if (_is_prev_gpio_isr_service == true)
+            vSemaphoreDelete(_interrupt_semaphore);
+            vTaskDelete(zh_pcf8574);
+            if (_is_prev_gpio_isr_service == false)
             {
                 gpio_uninstall_isr_service();
             }
@@ -110,7 +110,6 @@ esp_err_t zh_pcf8574_deinit(zh_pcf8574_handle_t *handle)
     }
     i2c_master_bus_rm_device(handle->dev_handle);
     handle->is_initialized = false;
-    --_expander_counter;
     ZH_LOGI("PCF8574 deinitialization completed successfully.");
     return ESP_OK;
 }
@@ -205,7 +204,7 @@ static esp_err_t _zh_pcf8574_validate_config(const zh_pcf8574_init_config_t *con
     ZH_ERROR_CHECK(config != NULL, ESP_ERR_INVALID_ARG, NULL, "Initial config is NULL.");
     ZH_ERROR_CHECK((config->i2c_address >= 0x20 && config->i2c_address <= 0x27) || (config->i2c_address >= 0x38 && config->i2c_address <= 0x3F), ESP_ERR_INVALID_ARG, NULL, "Invalid I2C address.");
     ZH_ERROR_CHECK(config->task_priority >= 10 && config->stack_size >= 2048, ESP_ERR_INVALID_ARG, NULL, "Invalid task settings.");
-    ZH_ERROR_CHECK(config->interrupt_gpio >= GPIO_NUM_0 && config->interrupt_gpio <= GPIO_NUM_MAX, ESP_ERR_INVALID_ARG, NULL, "Invalid GPIO number.");
+    ZH_ERROR_CHECK(config->interrupt_gpio <= GPIO_NUM_MAX, ESP_ERR_INVALID_ARG, NULL, "Invalid GPIO number.");
     ZH_ERROR_CHECK(config->i2c_handle != NULL, ESP_ERR_INVALID_ARG, NULL, "Invalid I2C handle.");
     return ESP_OK;
 }