esp_components/zh_pcf8574
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feat: added deinit

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This commit is contained in:
Alexey Zholtikov
2025-12-21 09:10:43 +03:00
parent d2b5dd7120
commit 364622ff58
3 changed files with 47 additions and 1 deletions
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9
include/zh_pcf8574.h
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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.
*

2
version.txt
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@@ -1 +1 @@
2.2.0
2.3.0

37
zh_pcf8574.c
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@@ -20,6 +20,7 @@ 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};
@@ -74,10 +75,46 @@ 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;
}
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 == true)
{
gpio_uninstall_isr_service();
}
_interrupt_gpio = GPIO_NUM_MAX;
}
}
i2c_master_bus_rm_device(handle->dev_handle);
handle->is_initialized = false;
--_expander_counter;
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.");