esp_components/zh_pcf8574
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refactor: refactored by pvs-studio

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This commit is contained in:
Alexey Zholtikov
2025-12-14 21:20:31 +03:00
parent 1a8f4711e8
commit b1c38b4a96
2 changed files with 21 additions and 17 deletions
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4
README.md
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@@ -4,6 +4,10 @@
1. [ESP32 ESP-IDF v5.5.1](https://docs.espressif.com/projects/esp-idf/en/v5.5.1/esp32/index.html)
## SAST Tools
[PVS-Studio](https://pvs-studio.com/pvs-studio/?utm_source=website&utm_medium=github&utm_campaign=open_source) - static analyzer for C, C++, C#, and Java code.
## Features
1. Support of 16 expanders on one bus.

34
zh_pcf8574.c
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@@ -34,7 +34,7 @@ static esp_err_t _zh_pcf8574_write_register(zh_pcf8574_handle_t *handle, uint8_t
ESP_EVENT_DEFINE_BASE(ZH_PCF8574);
esp_err_t zh_pcf8574_init(const zh_pcf8574_init_config_t *config, zh_pcf8574_handle_t *handle)
esp_err_t zh_pcf8574_init(const zh_pcf8574_init_config_t *config, zh_pcf8574_handle_t *handle) // -V2008
{
ZH_LOGI("PCF8574 initialization started.");
ZH_ERROR_CHECK(handle != NULL, ESP_ERR_INVALID_ARG, NULL, "PCF8574 initialization failed. Invalid argument.");
@@ -52,24 +52,24 @@ esp_err_t zh_pcf8574_init(const zh_pcf8574_init_config_t *config, zh_pcf8574_han
err = _zh_pcf8574_resources_init(config);
if (_is_prev_gpio_isr_service == true)
{
ZH_ERROR_CHECK(err == ESP_OK, err, i2c_master_bus_rm_device(handle->dev_handle); gpio_isr_handler_remove(config->interrupt_gpio);
gpio_reset_pin(config->interrupt_gpio); zh_vector_free(&_vector), "PCF8574 initialization failed. Resources initialization failed.");
ZH_ERROR_CHECK(err == ESP_OK, err, i2c_master_bus_rm_device(handle->dev_handle); gpio_isr_handler_remove((gpio_num_t)config->interrupt_gpio);
gpio_reset_pin((gpio_num_t)config->interrupt_gpio); zh_vector_free(&_vector), "PCF8574 initialization failed. Resources initialization failed.");
}
else
{
ZH_ERROR_CHECK(err == ESP_OK, err, i2c_master_bus_rm_device(handle->dev_handle); gpio_isr_handler_remove(config->interrupt_gpio);
gpio_uninstall_isr_service(); gpio_reset_pin(config->interrupt_gpio); zh_vector_free(&_vector), "PCF8574 initialization failed. Resources initialization failed.");
ZH_ERROR_CHECK(err == ESP_OK, err, i2c_master_bus_rm_device(handle->dev_handle); gpio_isr_handler_remove((gpio_num_t)config->interrupt_gpio);
gpio_uninstall_isr_service(); gpio_reset_pin((gpio_num_t)config->interrupt_gpio); zh_vector_free(&_vector), "PCF8574 initialization failed. Resources initialization failed.");
}
err = _zh_pcf8574_task_init(config);
if (_is_prev_gpio_isr_service == true)
{
ZH_ERROR_CHECK(err == ESP_OK, err, i2c_master_bus_rm_device(handle->dev_handle); gpio_isr_handler_remove(config->interrupt_gpio);
gpio_reset_pin(config->interrupt_gpio); zh_vector_free(&_vector); vSemaphoreDelete(_interrupt_semaphore), "PCF8574 initialization failed. Task initialization failed.");
ZH_ERROR_CHECK(err == ESP_OK, err, i2c_master_bus_rm_device(handle->dev_handle); gpio_isr_handler_remove((gpio_num_t)config->interrupt_gpio);
gpio_reset_pin((gpio_num_t)config->interrupt_gpio); zh_vector_free(&_vector); vSemaphoreDelete(_interrupt_semaphore), "PCF8574 initialization failed. Task initialization failed.");
}
else
{
ZH_ERROR_CHECK(err == ESP_OK, err, i2c_master_bus_rm_device(handle->dev_handle); gpio_isr_handler_remove(config->interrupt_gpio);
gpio_uninstall_isr_service(); gpio_reset_pin(config->interrupt_gpio); zh_vector_free(&_vector); vSemaphoreDelete(_interrupt_semaphore), "PCF8574 initialization failed. Task initialization failed.");
ZH_ERROR_CHECK(err == ESP_OK, err, i2c_master_bus_rm_device(handle->dev_handle); gpio_isr_handler_remove((gpio_num_t)config->interrupt_gpio);
gpio_uninstall_isr_service(); gpio_reset_pin((gpio_num_t)config->interrupt_gpio); zh_vector_free(&_vector); vSemaphoreDelete(_interrupt_semaphore), "PCF8574 initialization failed. Task initialization failed.");
}
}
handle->is_initialized = true;
@@ -110,7 +110,7 @@ esp_err_t zh_pcf8574_reset(zh_pcf8574_handle_t *handle)
return ESP_OK;
}
esp_err_t zh_pcf8574_read_gpio(zh_pcf8574_handle_t *handle, uint8_t gpio, bool *status)
esp_err_t zh_pcf8574_read_gpio(zh_pcf8574_handle_t *handle, uint8_t gpio, bool *status) // -V2008
{
ZH_LOGI("PCF8574 read GPIO started.");
ZH_ERROR_CHECK(handle != NULL && status != NULL, ESP_ERR_INVALID_ARG, NULL, "PCF8574 read GPIO failed. Invalid argument.");
@@ -125,7 +125,7 @@ esp_err_t zh_pcf8574_read_gpio(zh_pcf8574_handle_t *handle, uint8_t gpio, bool *
return ESP_OK;
}
esp_err_t zh_pcf8574_write_gpio(zh_pcf8574_handle_t *handle, uint8_t gpio, bool status)
esp_err_t zh_pcf8574_write_gpio(zh_pcf8574_handle_t *handle, uint8_t gpio, bool status) // -V2008
{
ZH_LOGI("PCF8574 write GPIO started.");
ZH_ERROR_CHECK(handle != NULL, ESP_ERR_INVALID_ARG, NULL, "PCF8574 write GPIO failed. Invalid argument.");
@@ -146,7 +146,7 @@ esp_err_t zh_pcf8574_write_gpio(zh_pcf8574_handle_t *handle, uint8_t gpio, bool
return ESP_OK;
}
static esp_err_t _zh_pcf8574_validate_config(const zh_pcf8574_init_config_t *config)
static esp_err_t _zh_pcf8574_validate_config(const zh_pcf8574_init_config_t *config) // -V2008
{
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.");
@@ -156,7 +156,7 @@ static esp_err_t _zh_pcf8574_validate_config(const zh_pcf8574_init_config_t *con
return ESP_OK;
}
static esp_err_t _zh_pcf8574_gpio_init(const zh_pcf8574_init_config_t *config, zh_pcf8574_handle_t *handle)
static esp_err_t _zh_pcf8574_gpio_init(const zh_pcf8574_init_config_t *config, zh_pcf8574_handle_t *handle) // -V2008
{
if (_interrupt_gpio != GPIO_NUM_MAX)
{
@@ -178,19 +178,19 @@ static esp_err_t _zh_pcf8574_gpio_init(const zh_pcf8574_init_config_t *config, z
err = gpio_config(&interrupt_gpio_config);
ZH_ERROR_CHECK(err == ESP_OK, err, zh_vector_free(&_vector), "GPIO configuration failed.")
err = gpio_install_isr_service(ESP_INTR_FLAG_LOWMED);
ZH_ERROR_CHECK(err == ESP_OK || err == ESP_ERR_INVALID_STATE, err, gpio_reset_pin(config->interrupt_gpio); zh_vector_free(&_vector), "Failed install isr service.")
ZH_ERROR_CHECK(err == ESP_OK || err == ESP_ERR_INVALID_STATE, err, gpio_reset_pin((gpio_num_t)config->interrupt_gpio); zh_vector_free(&_vector), "Failed install isr service.")
if (err == ESP_ERR_INVALID_STATE)
{
_is_prev_gpio_isr_service = true;
}
err = gpio_isr_handler_add(config->interrupt_gpio, _zh_pcf8574_isr_handler, NULL);
err = gpio_isr_handler_add((gpio_num_t)config->interrupt_gpio, _zh_pcf8574_isr_handler, NULL);
if (_is_prev_gpio_isr_service == true)
{
ZH_ERROR_CHECK(err == ESP_OK, err, gpio_reset_pin(config->interrupt_gpio); zh_vector_free(&_vector), "Failed add isr handler.")
ZH_ERROR_CHECK(err == ESP_OK, err, gpio_reset_pin((gpio_num_t)config->interrupt_gpio); zh_vector_free(&_vector), "Failed add isr handler.")
}
else
{
ZH_ERROR_CHECK(err == ESP_OK, err, gpio_uninstall_isr_service(); gpio_reset_pin(config->interrupt_gpio); zh_vector_free(&_vector), "Failed add isr handler.")
ZH_ERROR_CHECK(err == ESP_OK, err, gpio_uninstall_isr_service(); gpio_reset_pin((gpio_num_t)config->interrupt_gpio); zh_vector_free(&_vector), "Failed add isr handler.")
}
_interrupt_gpio = config->interrupt_gpio;
return ESP_OK;