4 Commits

3 changed files with 45 additions and 2 deletions

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@@ -112,6 +112,15 @@ extern "C"
*/
esp_err_t zh_pcf8574_init(const zh_pcf8574_init_config_t *config, zh_pcf8574_handle_t *handle);
/**
* @brief Deinitialize PCF8574 expander.
*
* @param[in] handle Pointer to unique PCF8574 handle.
*
* @return ESP_OK if success or an error code otherwise.
*/
esp_err_t zh_pcf8574_deinit(zh_pcf8574_handle_t *handle);
/**
* @brief Read PCF8574 all GPIO's status.
*

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@@ -1 +1 @@
2.2.0
2.3.1

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@@ -78,6 +78,40 @@ esp_err_t zh_pcf8574_init(const zh_pcf8574_init_config_t *config, zh_pcf8574_han
return ESP_OK;
}
esp_err_t zh_pcf8574_deinit(zh_pcf8574_handle_t *handle)
{
ZH_LOGI("PCF8574 deinitialization started.");
ZH_ERROR_CHECK(handle != NULL, ESP_ERR_INVALID_ARG, NULL, "PCF8574 deinitialization failed. Invalid argument.");
ZH_ERROR_CHECK(handle->is_initialized == true, ESP_ERR_INVALID_STATE, NULL, "PCF8574 deinitialization failed. PCF8574 not initialized.");
if (_interrupt_gpio < GPIO_NUM_MAX && handle->gpio_work_mode != 0)
{
for (uint16_t i = 0; i < zh_vector_get_size(&_vector); ++i)
{
zh_pcf8574_handle_t *temp_handle = zh_vector_get_item(&_vector, i);
if (handle->i2c_address == temp_handle->i2c_address)
{
zh_vector_delete_item(&_vector, i);
break;
}
}
if (zh_vector_get_size(&_vector) == 0)
{
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 == false)
{
gpio_uninstall_isr_service();
}
_interrupt_gpio = GPIO_NUM_MAX;
}
}
i2c_master_bus_rm_device(handle->dev_handle);
handle->is_initialized = false;
ZH_LOGI("PCF8574 deinitialization completed successfully.");
return ESP_OK;
}
esp_err_t zh_pcf8574_read(zh_pcf8574_handle_t *handle, uint8_t *reg)
{
ZH_LOGI("PCF8574 read register started.");
@@ -168,7 +202,7 @@ 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;
}