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refactor: major refactoring

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This commit is contained in:
Alexey Zholtikov 2025-05-08 18:51:39 +03:00
parent 2a75773239
commit cea4430acb
3 changed files with 231 additions and 224 deletions
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14
README.md
View File

@ -47,7 +47,7 @@ One expander on bus. All GPIO's as output (except P0 - input). Interrupt is enab
#define I2C_PORT (I2C_NUM_MAX - 1)
#ifndef CONFIG_IDF_TARGET_ESP8266
i2c_master_bus_handle_t i2c_bus_handle = {0};
i2c_master_bus_handle_t i2c_bus_handle = NULL;
#endif
zh_pcf8574_handle_t pcf8574_handle = {0};
@ -103,8 +103,8 @@ void app_main(void)
pcf8574_init_config.i2c_handle = i2c_bus_handle;
#endif
pcf8574_init_config.i2c_address = 0x38;
pcf8574_init_config.p0_gpio_work_mode = EXP_GPIO_INPUT; // Required only for input GPIO.
pcf8574_init_config.interrupt_gpio = GPIO_NUM_14; // Required only if used input GPIO interrupts.
pcf8574_init_config.p0_gpio_work_mode = true; // Required only for input GPIO.
pcf8574_init_config.interrupt_gpio = GPIO_NUM_14; // Required only if used input GPIO interrupts.
zh_pcf8574_init(&pcf8574_init_config, &pcf8574_handle);
uint8_t reg = 0;
zh_pcf8574_read(&pcf8574_handle, &reg);
@ -114,13 +114,13 @@ void app_main(void)
zh_pcf8574_read(&pcf8574_handle, &reg);
print_gpio_status("GPIO status: ", reg);
printf("Sets P0 to 0.\n");
zh_pcf8574_write_gpio(&pcf8574_handle, EXP_GPIO_NUM_P0, 0); // GPIO P0 will not be changed because it is operating in input mode.
zh_pcf8574_write_gpio(&pcf8574_handle, 0, false); // GPIO P0 will not be changed because it is operating in input mode.
bool gpio = 0;
zh_pcf8574_read_gpio(&pcf8574_handle, EXP_GPIO_NUM_P0, &gpio);
zh_pcf8574_read_gpio(&pcf8574_handle, 0, &gpio);
printf("P0 status: %d.\n", gpio);
printf("Set P1 to 0.\n");
zh_pcf8574_write_gpio(&pcf8574_handle, EXP_GPIO_NUM_P1, 0);
zh_pcf8574_read_gpio(&pcf8574_handle, EXP_GPIO_NUM_P1, &gpio);
zh_pcf8574_write_gpio(&pcf8574_handle, 1, false);
zh_pcf8574_read_gpio(&pcf8574_handle, 1, &gpio);
printf("P1 status: %d.\n", gpio);
zh_pcf8574_read(&pcf8574_handle, &reg);
print_gpio_status("GPIO status: ", reg);

100
include/zh_pcf8574.h
View File

@ -17,46 +17,37 @@
.task_priority = 10, \
.stack_size = 2048, \
.i2c_address = 0xFF, \
.interrupt_gpio = GPIO_NUM_MAX}
.p0_gpio_work_mode = 0, \
.p1_gpio_work_mode = 0, \
.p2_gpio_work_mode = 0, \
.p3_gpio_work_mode = 0, \
.p4_gpio_work_mode = 0, \
.p5_gpio_work_mode = 0, \
.p6_gpio_work_mode = 0, \
.p7_gpio_work_mode = 0, \
.interrupt_gpio = GPIO_NUM_MAX, \
.i2c_port = 0}
#ifdef __cplusplus
extern "C"
{
#endif
typedef enum // Enumeration of possible GPIO work mode.
{
EXP_GPIO_OUTPUT,
EXP_GPIO_INPUT
} zh_pcf8574_gpio_work_mode_t;
typedef enum // Enumeration of possible GPIO's number.
{
EXP_GPIO_NUM_P0 = 0x01,
EXP_GPIO_NUM_P1 = 0x02,
EXP_GPIO_NUM_P2 = 0x04,
EXP_GPIO_NUM_P3 = 0x08,
EXP_GPIO_NUM_P4 = 0x10,
EXP_GPIO_NUM_P5 = 0x20,
EXP_GPIO_NUM_P6 = 0x40,
EXP_GPIO_NUM_P7 = 0x80
} zh_pcf8574_gpio_number_t;
typedef struct // Structure for initial initialization of PCF8574 expander.
{
uint8_t task_priority; // Task priority for the PCF8574 expander isr processing. @note It is not recommended to set a value less than 10.
uint16_t stack_size; // Stack size for task for the PCF8574 expander isr processing processing. @note The minimum size is 2048 bytes.
uint8_t i2c_address; // Expander I2C address.
zh_pcf8574_gpio_work_mode_t p0_gpio_work_mode; // Expander GPIO PO work mode.
zh_pcf8574_gpio_work_mode_t p1_gpio_work_mode; // Expander GPIO P1 work mode.
zh_pcf8574_gpio_work_mode_t p2_gpio_work_mode; // Expander GPIO P2 work mode.
zh_pcf8574_gpio_work_mode_t p3_gpio_work_mode; // Expander GPIO P3 work mode.
zh_pcf8574_gpio_work_mode_t p4_gpio_work_mode; // Expander GPIO P4 work mode.
zh_pcf8574_gpio_work_mode_t p5_gpio_work_mode; // Expander GPIO P5 work mode.
zh_pcf8574_gpio_work_mode_t p6_gpio_work_mode; // Expander GPIO P6 work mode.
zh_pcf8574_gpio_work_mode_t p7_gpio_work_mode; // Expander GPIO P7 work mode.
gpio_num_t interrupt_gpio; // Interrupt GPIO. @attention Must be same for all PCF8574 expanders.
bool i2c_port; // I2C port. @attention Must be same for all PCF8574 expanders.
uint8_t task_priority; // Task priority for the PCF8574 expander isr processing. @note It is not recommended to set a value less than 10.
uint16_t stack_size; // Stack size for task for the PCF8574 expander isr processing processing. @note The minimum size is 2048 bytes.
uint8_t i2c_address; // Expander I2C address.
bool p0_gpio_work_mode; // Expander GPIO PO work mode. True for input, false for output.
bool p1_gpio_work_mode; // Expander GPIO P1 work mode. True for input, false for output.
bool p2_gpio_work_mode; // Expander GPIO P2 work mode. True for input, false for output.
bool p3_gpio_work_mode; // Expander GPIO P3 work mode. True for input, false for output.
bool p4_gpio_work_mode; // Expander GPIO P4 work mode. True for input, false for output.
bool p5_gpio_work_mode; // Expander GPIO P5 work mode. True for input, false for output.
bool p6_gpio_work_mode; // Expander GPIO P6 work mode. True for input, false for output.
bool p7_gpio_work_mode; // Expander GPIO P7 work mode. True for input, false for output.
gpio_num_t interrupt_gpio; // Interrupt GPIO. @attention Must be same for all PCF8574 expanders.
bool i2c_port; // I2C port. @attention Must be same for all PCF8574 expanders.
#ifndef CONFIG_IDF_TARGET_ESP8266
i2c_master_bus_handle_t i2c_handle; // Unique I2C bus handle. @attention Must be same for all PCF8574 expanders.
#endif
@ -95,12 +86,7 @@ extern "C"
*
* @code zh_pcf8574_init_config_t config = ZH_PCF8574_INIT_CONFIG_DEFAULT() @endcode
*
* @return
* - ESP_OK if initialization was success
* - ESP_ERR_INVALID_ARG if parameter error or invalid i2c adress
* - ESP_ERR_NOT_FOUND if expander not connected or not responded
* - ESP_ERR_INVALID_RESPONSE if I2C driver error
* - ESP_FAIL if internal error
* @return ESP_OK if success or an error code otherwise.
*/
esp_err_t zh_pcf8574_init(const zh_pcf8574_init_config_t *config, zh_pcf8574_handle_t *handle);
@ -112,11 +98,7 @@ extern "C"
*
* @note For input GPIO's status will be 1 (HIGH) always.
*
* @return
* - ESP_OK if read was success
* - ESP_ERR_INVALID_ARG if parameter error
* - ESP_ERR_NOT_FOUND if expander is not initialized
* - ESP_ERR_INVALID_RESPONSE if I2C driver error
* @return ESP_OK if success or an error code otherwise.
*/
esp_err_t zh_pcf8574_read(zh_pcf8574_handle_t *handle, uint8_t *reg);
@ -128,11 +110,7 @@ extern "C"
*
* @attention Only the GPIO outputs are affected.
*
* @return
* - ESP_OK if write was success
* - ESP_ERR_INVALID_ARG if parameter error
* - ESP_ERR_NOT_FOUND if expander is not initialized
* - ESP_ERR_INVALID_RESPONSE if I2C driver error
* @return ESP_OK if success or an error code otherwise.
*/
esp_err_t zh_pcf8574_write(zh_pcf8574_handle_t *handle, uint8_t reg);
@ -141,11 +119,7 @@ extern "C"
*
* @param[in] handle Pointer to unique PCF8574 handle.
*
* @return
* - ESP_OK if reset was success
* - ESP_ERR_INVALID_ARG if parameter error
* - ESP_ERR_NOT_FOUND if expander is not initialized
* - ESP_ERR_INVALID_RESPONSE if I2C driver error
* @return ESP_OK if success or an error code otherwise.
*/
esp_err_t zh_pcf8574_reset(zh_pcf8574_handle_t *handle);
@ -154,34 +128,26 @@ extern "C"
*
* @param[in] handle Pointer to unique PCF8574 handle.
* @param[in] gpio GPIO number.
* @param[out] status Pointer to GPIO status.
* @param[out] status Pointer to GPIO status (true - HIGH, false - LOW).
*
* @note For input GPIO's status will be 1 (HIGH) always.
*
* @return
* - ESP_OK if read was success
* - ESP_ERR_INVALID_ARG if parameter error
* - ESP_ERR_NOT_FOUND if expander is not initialized
* - ESP_ERR_INVALID_RESPONSE if I2C driver error
* @return ESP_OK if success or an error code otherwise.
*/
esp_err_t zh_pcf8574_read_gpio(zh_pcf8574_handle_t *handle, zh_pcf8574_gpio_number_t gpio, bool *status);
esp_err_t zh_pcf8574_read_gpio(zh_pcf8574_handle_t *handle, uint8_t gpio, bool *status);
/**
* @brief Set PCF8574 GPIO status.
*
* @param[in] handle Pointer to unique PCF8574 handle.
* @param[in] gpio GPIO number.
* @param[in] status Pointer to GPIO status.
* @param[in] status GPIO status (true - HIGH, false - LOW).
*
* @attention Only the GPIO output is affected.
*
* @return
* - ESP_OK if write was success
* - ESP_ERR_INVALID_ARG if parameter error
* - ESP_ERR_NOT_FOUND if expander is not initialized
* - ESP_ERR_INVALID_RESPONSE if I2C driver error
* @return ESP_OK if success or an error code otherwise.
*/
esp_err_t zh_pcf8574_write_gpio(zh_pcf8574_handle_t *handle, zh_pcf8574_gpio_number_t gpio, bool status);
esp_err_t zh_pcf8574_write_gpio(zh_pcf8574_handle_t *handle, uint8_t gpio, bool status);
#ifdef __cplusplus
}

341
zh_pcf8574.c
View File

@ -2,122 +2,201 @@
static const char *TAG = "zh_pcf8574";
#define ZH_PCF8574_LOGI(msg, ...) ESP_LOGI(TAG, msg, ##__VA_ARGS__)
#define ZH_PCF8574_LOGW(msg, ...) ESP_LOGW(TAG, msg, ##__VA_ARGS__)
#define ZH_PCF8574_LOGE(msg, ...) ESP_LOGE(TAG, msg, ##__VA_ARGS__)
#define ZH_PCF8574_LOGE_ERR(msg, err, ...) ESP_LOGE(TAG, "[%s:%d:%s] " msg, __FILE__, __LINE__, esp_err_to_name(err), ##__VA_ARGS__)
#define ZH_PCF8574_CHECK(cond, err, msg, ...) \
if (!(cond)) \
{ \
ZH_PCF8574_LOGE_ERR(msg, err); \
return err; \
}
static gpio_num_t _interrupt_gpio = GPIO_NUM_MAX;
static SemaphoreHandle_t _interrupt_semaphore = {0};
static SemaphoreHandle_t _interrupt_semaphore = NULL;
static uint8_t _gpio_matrix[8] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80};
static zh_vector_t _vector = {0};
static void _zh_isr_handler(void *arg);
static void _zh_isr_processing_task(void *pvParameter);
static esp_err_t _zh_read_register(zh_pcf8574_handle_t *handle, uint8_t *reg);
static esp_err_t _zh_write_register(zh_pcf8574_handle_t *handle, uint8_t reg);
static esp_err_t _zh_pcf8574_validate_config(const zh_pcf8574_init_config_t *config);
static esp_err_t _zh_pcf8574_configure_i2c_device(const zh_pcf8574_init_config_t *config, zh_pcf8574_handle_t *handle);
static esp_err_t _zh_pcf8574_configure_interrupts(const zh_pcf8574_init_config_t *config, zh_pcf8574_handle_t handle);
static void _zh_pcf8574_isr_handler(void *arg);
static void _zh_pcf8574_isr_processing_task(void *pvParameter);
static esp_err_t _zh_pcf8574_read_register(zh_pcf8574_handle_t *handle, uint8_t *reg);
static esp_err_t _zh_pcf8574_write_register(zh_pcf8574_handle_t *handle, uint8_t reg);
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_LOGI(TAG, "PCF8574 initialization begin.");
if (config == NULL || handle == NULL || config->i2c_address == 0xFF)
ZH_PCF8574_LOGI("PCF8574 initialization started.");
ZH_PCF8574_CHECK(handle != NULL, ESP_ERR_INVALID_ARG, "PCF8574 initialization failed. Invalid argument.");
ZH_PCF8574_CHECK(handle->is_initialized == false, ESP_ERR_INVALID_STATE, "PCF8574 initialization failed. PCF8574 is already initialized.");
esp_err_t err = _zh_pcf8574_validate_config(config);
ZH_PCF8574_CHECK(err == ESP_OK, err, "PCF8574 initialization failed. Initial configuration check failed.");
ZH_PCF8574_LOGI("PCF8574 initial configuration check completed successfully.");
err = _zh_pcf8574_configure_i2c_device(config, handle);
ZH_PCF8574_CHECK(err == ESP_OK, err, "PCF8574 initialization failed. Failed to add I2C device.");
ZH_PCF8574_LOGI("PCF8574 add I2C device completed successfully.");
err = _zh_pcf8574_write_register(handle, handle->gpio_work_mode);
if (err != ESP_OK)
{
ESP_LOGE(TAG, "PCF8574 initialization fail. Invalid argument.");
return ESP_ERR_INVALID_ARG;
}
handle->i2c_address = config->i2c_address;
handle->gpio_work_mode = (config->p7_gpio_work_mode << 7) | (config->p6_gpio_work_mode << 6) | (config->p5_gpio_work_mode << 5) | (config->p4_gpio_work_mode << 4) |
(config->p3_gpio_work_mode << 3) | (config->p2_gpio_work_mode << 2) | (config->p1_gpio_work_mode << 1) | (config->p0_gpio_work_mode << 0);
handle->gpio_status = handle->gpio_work_mode;
handle->i2c_port = config->i2c_port;
#ifndef CONFIG_IDF_TARGET_ESP8266
handle->i2c_handle = config->i2c_handle;
i2c_device_config_t pcf8574_config = {
.dev_addr_length = I2C_ADDR_BIT_LEN_7,
.device_address = handle->i2c_address,
.scl_speed_hz = 100000,
};
i2c_master_bus_add_device(handle->i2c_handle, &pcf8574_config, &handle->dev_handle);
if (i2c_master_probe(handle->i2c_handle, handle->i2c_address, 1000 / portTICK_PERIOD_MS) != ESP_OK)
{
ESP_LOGE(TAG, "PCF8574 initialization fail. Expander not connected or not responded.");
return ESP_ERR_NOT_FOUND;
}
#endif
handle->is_initialized = true;
if (_zh_write_register(handle, handle->gpio_work_mode) != ESP_OK)
{
ESP_LOGE(TAG, "PCF8574 initialization fail. I2C driver error at line %d.", __LINE__);
handle->is_initialized = false;
return ESP_ERR_INVALID_RESPONSE;
ZH_PCF8574_LOGE_ERR("PCF8574 initialization failed. Failed GPIO setup.", err);
return err;
}
if (_interrupt_gpio == GPIO_NUM_MAX && config->interrupt_gpio != GPIO_NUM_MAX)
ZH_PCF8574_LOGI("GPIO setup completed successfully.");
if (config->interrupt_gpio < GPIO_NUM_MAX && config->interrupt_gpio >= GPIO_NUM_0 && handle->gpio_work_mode != 0)
{
zh_vector_init(&_vector, sizeof(zh_pcf8574_handle_t));
_interrupt_gpio = config->interrupt_gpio;
gpio_config_t isr_pin_config = {0};
isr_pin_config.intr_type = GPIO_INTR_NEGEDGE;
isr_pin_config.mode = GPIO_MODE_INPUT;
isr_pin_config.pin_bit_mask = (1ULL << _interrupt_gpio);
isr_pin_config.pull_down_en = GPIO_PULLDOWN_DISABLE;
isr_pin_config.pull_up_en = GPIO_PULLUP_ENABLE;
if (gpio_config(&isr_pin_config) != ESP_OK)
err = _zh_pcf8574_configure_interrupts(config, *handle);
if (err != ESP_OK)
{
ESP_LOGW(TAG, "PCF8574 initialization warning. GPIO driver error at line %d.", __LINE__);
}
else
{
_interrupt_semaphore = xSemaphoreCreateBinary();
if (xTaskCreatePinnedToCore(&_zh_isr_processing_task, "_zh_isr_processing_task", config->stack_size, NULL, config->task_priority, NULL, tskNO_AFFINITY) != pdPASS)
{
ESP_LOGE(TAG, "PCF8574 initialization warning. Internal error at line %d.", __LINE__);
return ESP_FAIL;
}
gpio_install_isr_service(0);
gpio_isr_handler_add(_interrupt_gpio, _zh_isr_handler, NULL);
handle->is_initialized = false;
ZH_PCF8574_LOGE_ERR("PCF8574 initialization failed. Interrupt setup failed.", err);
return err;
}
ZH_PCF8574_LOGI("Interrupt setup completed successfully.");
}
if (_interrupt_gpio != GPIO_NUM_MAX && handle->gpio_work_mode != 0)
{
zh_vector_push_back(&_vector, handle);
}
ESP_LOGI(TAG, "PCF8574 initialization success.");
handle->is_initialized = true;
ZH_PCF8574_LOGI("PCF8574 initialization completed successfully.");
return ESP_OK;
}
esp_err_t zh_pcf8574_read(zh_pcf8574_handle_t *handle, uint8_t *reg)
{
return _zh_read_register(handle, reg);
return _zh_pcf8574_read_register(handle, reg);
}
esp_err_t zh_pcf8574_write(zh_pcf8574_handle_t *handle, uint8_t reg)
{
return _zh_write_register(handle, (reg | handle->gpio_work_mode));
return _zh_pcf8574_write_register(handle, (reg | handle->gpio_work_mode));
}
esp_err_t zh_pcf8574_reset(zh_pcf8574_handle_t *handle)
{
return _zh_write_register(handle, handle->gpio_work_mode);
return _zh_pcf8574_write_register(handle, handle->gpio_work_mode);
}
esp_err_t zh_pcf8574_read_gpio(zh_pcf8574_handle_t *handle, zh_pcf8574_gpio_number_t gpio, bool *status)
esp_err_t zh_pcf8574_read_gpio(zh_pcf8574_handle_t *handle, uint8_t gpio, bool *status)
{
ZH_PCF8574_CHECK(gpio <= 7, ESP_FAIL, "Invalid GPIO number.")
uint8_t gpio_temp = _gpio_matrix[gpio];
uint8_t reg_temp = 0;
esp_err_t err = _zh_read_register(handle, &reg_temp);
*status = ((reg_temp & gpio) ? 1 : 0);
esp_err_t err = _zh_pcf8574_read_register(handle, &reg_temp);
*status = ((reg_temp & gpio_temp) ? 1 : 0);
return err;
}
esp_err_t zh_pcf8574_write_gpio(zh_pcf8574_handle_t *handle, zh_pcf8574_gpio_number_t gpio, bool status)
esp_err_t zh_pcf8574_write_gpio(zh_pcf8574_handle_t *handle, uint8_t gpio, bool status)
{
ZH_PCF8574_CHECK(gpio <= 7, ESP_FAIL, "Invalid GPIO number.")
uint8_t gpio_temp = _gpio_matrix[gpio];
if (status == true)
{
return _zh_write_register(handle, handle->gpio_status | handle->gpio_work_mode | gpio);
}
else
{
return _zh_write_register(handle, (handle->gpio_status ^ gpio) | handle->gpio_work_mode);
return _zh_pcf8574_write_register(handle, handle->gpio_status | handle->gpio_work_mode | gpio_temp);
}
return _zh_pcf8574_write_register(handle, (handle->gpio_status ^ gpio_temp) | handle->gpio_work_mode);
}
void IRAM_ATTR _zh_isr_handler(void *arg)
static esp_err_t _zh_pcf8574_validate_config(const zh_pcf8574_init_config_t *config)
{
ZH_PCF8574_CHECK(config != NULL, ESP_ERR_INVALID_ARG, "Invalid configuration.");
ZH_PCF8574_CHECK((config->i2c_address >= 0x20 && config->i2c_address <= 0x27) || (config->i2c_address >= 0x38 && config->i2c_address <= 0x3F), ESP_ERR_INVALID_ARG, "Invalid I2C address.");
ZH_PCF8574_CHECK(config->task_priority >= 10 && config->stack_size >= 2048, ESP_ERR_INVALID_ARG, "Invalid task settings.");
ZH_PCF8574_CHECK(config->interrupt_gpio >= 0 && config->interrupt_gpio <= GPIO_NUM_MAX, ESP_ERR_INVALID_ARG, "Invalid GPIO number.");
#ifndef CONFIG_IDF_TARGET_ESP8266
ZH_PCF8574_CHECK(config->i2c_handle != NULL, ESP_ERR_INVALID_ARG, "Invalid I2C handle.");
#endif
return ESP_OK;
}
static esp_err_t _zh_pcf8574_configure_i2c_device(const zh_pcf8574_init_config_t *config, zh_pcf8574_handle_t *handle)
{
#ifndef CONFIG_IDF_TARGET_ESP8266
i2c_device_config_t pcf8574_config = {
.dev_addr_length = I2C_ADDR_BIT_LEN_7,
.device_address = config->i2c_address,
.scl_speed_hz = 100000,
};
i2c_master_dev_handle_t _dev_handle = NULL;
esp_err_t err = i2c_master_bus_add_device(config->i2c_handle, &pcf8574_config, &_dev_handle);
if (err != ESP_OK)
{
ZH_PCF8574_LOGE_ERR("Failed to add I2C device.", err);
i2c_master_bus_rm_device(_dev_handle);
handle->dev_handle = NULL;
return err;
}
err = i2c_master_probe(config->i2c_handle, config->i2c_address, 1000 / portTICK_PERIOD_MS);
if (err != ESP_OK)
{
ZH_PCF8574_LOGE_ERR("Expander not connected or not responding.", err);
i2c_master_bus_rm_device(_dev_handle);
handle->dev_handle = NULL;
return err;
}
handle->i2c_handle = config->i2c_handle;
handle->dev_handle = _dev_handle;
#endif
handle->gpio_work_mode = (config->p7_gpio_work_mode << 7) | (config->p6_gpio_work_mode << 6) | (config->p5_gpio_work_mode << 5) |
(config->p4_gpio_work_mode << 4) | (config->p3_gpio_work_mode << 3) | (config->p2_gpio_work_mode << 2) |
(config->p1_gpio_work_mode << 1) | (config->p0_gpio_work_mode << 0);
handle->gpio_status = handle->gpio_work_mode;
handle->i2c_address = config->i2c_address;
handle->i2c_port = config->i2c_port;
handle->is_initialized = true;
return ESP_OK;
}
static esp_err_t _zh_pcf8574_configure_interrupts(const zh_pcf8574_init_config_t *config, zh_pcf8574_handle_t handle)
{
if (_interrupt_gpio != GPIO_NUM_MAX)
{
esp_err_t err = zh_vector_push_back(&_vector, &handle);
ZH_PCF8574_CHECK(err == ESP_OK, err, "Failed add item to vector.")
return ESP_OK;
}
_interrupt_gpio = config->interrupt_gpio;
esp_err_t err = zh_vector_init(&_vector, sizeof(zh_pcf8574_handle_t));
ZH_PCF8574_CHECK(err == ESP_OK, err, "Failed create vector.")
err = zh_vector_push_back(&_vector, &handle);
ZH_PCF8574_CHECK(err == ESP_OK, err, "Failed add item to vector.")
gpio_config_t isr_pin_config = {
.intr_type = GPIO_INTR_NEGEDGE,
.mode = GPIO_MODE_INPUT,
.pin_bit_mask = (1ULL << _interrupt_gpio),
.pull_down_en = GPIO_PULLDOWN_DISABLE,
.pull_up_en = GPIO_PULLUP_ENABLE,
};
err = gpio_config(&isr_pin_config);
ZH_PCF8574_CHECK(err == ESP_OK, err, "GPIO configuration failed.")
err = gpio_install_isr_service(0);
ZH_PCF8574_CHECK(err == ESP_OK, err, "Failed install isr service.")
err = gpio_isr_handler_add(_interrupt_gpio, _zh_pcf8574_isr_handler, NULL);
ZH_PCF8574_CHECK(err == ESP_OK, err, "Failed add isr handler.")
_interrupt_semaphore = xSemaphoreCreateBinary();
ZH_PCF8574_CHECK(_interrupt_semaphore != NULL, ESP_ERR_NO_MEM, "Failed to create semaphore.")
BaseType_t x_err = xTaskCreatePinnedToCore(
&_zh_pcf8574_isr_processing_task,
"_zh_pcf8574_isr_processing_task",
config->stack_size,
NULL,
config->task_priority,
NULL,
tskNO_AFFINITY);
if (x_err != pdPASS)
{
ZH_PCF8574_LOGE("Failed to create isr processing task.");
vSemaphoreDelete(_interrupt_semaphore);
return ESP_FAIL;
}
return ESP_OK;
}
static void IRAM_ATTR _zh_pcf8574_isr_handler(void *arg)
{
BaseType_t xHigherPriorityTaskWoken = pdFALSE;
xSemaphoreGiveFromISR(_interrupt_semaphore, &xHigherPriorityTaskWoken);
@ -127,130 +206,92 @@ void IRAM_ATTR _zh_isr_handler(void *arg)
};
}
void _zh_isr_processing_task(void *pvParameter)
static void IRAM_ATTR _zh_pcf8574_isr_processing_task(void *pvParameter)
{
for (;;)
{
xSemaphoreTake(_interrupt_semaphore, portMAX_DELAY);
ESP_LOGI(TAG, "PCF8574 isr processing begin.");
ZH_PCF8574_LOGI("PCF8574 isr processing begin.");
for (uint16_t i = 0; i < zh_vector_get_size(&_vector); ++i)
{
zh_pcf8574_handle_t *handle = zh_vector_get_item(&_vector, i);
if (handle == NULL)
{
ZH_PCF8574_LOGE("PCF8574 isr processing failed. Failed to get vector item data.");
continue;
}
zh_pcf8574_event_on_isr_t event = {0};
event.i2c_address = handle->i2c_address;
event.gpio_number = 0xFF;
uint8_t reg_temp = 0;
_zh_read_register(handle, &reg_temp);
if (((handle->gpio_work_mode & EXP_GPIO_NUM_P0) != 0) && ((reg_temp & EXP_GPIO_NUM_P0) == 0))
esp_err_t err = _zh_pcf8574_read_register(handle, &reg_temp);
if (err != ESP_OK)
{
event.gpio_number = 0;
ZH_PCF8574_LOGE_ERR("PCF8574 isr processing failed. Failed to read expander register.", err);
continue;
}
else if (((handle->gpio_work_mode & EXP_GPIO_NUM_P1) != 0) && ((reg_temp & EXP_GPIO_NUM_P1) == 0))
for (uint8_t j = 0; j <= 7; ++j)
{
event.gpio_number = 1;
}
else if (((handle->gpio_work_mode & EXP_GPIO_NUM_P2) != 0) && ((reg_temp & EXP_GPIO_NUM_P2) == 0))
{
event.gpio_number = 2;
}
else if (((handle->gpio_work_mode & EXP_GPIO_NUM_P3) != 0) && ((reg_temp & EXP_GPIO_NUM_P3) == 0))
{
event.gpio_number = 3;
}
else if (((handle->gpio_work_mode & EXP_GPIO_NUM_P4) != 0) && ((reg_temp & EXP_GPIO_NUM_P4) == 0))
{
event.gpio_number = 4;
}
else if (((handle->gpio_work_mode & EXP_GPIO_NUM_P5) != 0) && ((reg_temp & EXP_GPIO_NUM_P5) == 0))
{
event.gpio_number = 5;
}
else if (((handle->gpio_work_mode & EXP_GPIO_NUM_P6) != 0) && ((reg_temp & EXP_GPIO_NUM_P6) == 0))
{
event.gpio_number = 6;
}
else if (((handle->gpio_work_mode & EXP_GPIO_NUM_P7) != 0) && ((reg_temp & EXP_GPIO_NUM_P7) == 0))
{
event.gpio_number = 7;
if (((handle->gpio_work_mode & _gpio_matrix[j]) != 0) && ((reg_temp & _gpio_matrix[j]) == 0))
{
event.gpio_number = j;
break;
}
}
if (event.gpio_number != 0xFF)
{
if (esp_event_post(ZH_PCF8574, 0, &event, sizeof(event), portTICK_PERIOD_MS) != ESP_OK)
err = esp_event_post(ZH_PCF8574, 0, &event, sizeof(event), portTICK_PERIOD_MS);
if (err != ESP_OK)
{
ESP_LOGE(TAG, "PCF8574 isr processing task internal error at line %d.", __LINE__);
ZH_PCF8574_LOGE_ERR("PCF8574 isr processing failed. Failed to post interrupt event.", err);
}
}
}
ESP_LOGI(TAG, "PCF8574 isr processing success.");
ZH_PCF8574_LOGI("PCF8574 isr processing completed successfully.");
}
vTaskDelete(NULL);
}
esp_err_t _zh_read_register(zh_pcf8574_handle_t *handle, uint8_t *reg)
static esp_err_t _zh_pcf8574_read_register(zh_pcf8574_handle_t *handle, uint8_t *reg)
{
ESP_LOGI(TAG, "PCF8574 read begin.");
if (handle == NULL)
{
ESP_LOGE(TAG, "PCF8574 read fail. Invalid argument.");
return ESP_ERR_INVALID_ARG;
}
if (handle->is_initialized == false)
{
ESP_LOGE(TAG, "PCF8574 read fail. PCF8574 not initialized.");
return ESP_ERR_NOT_FOUND;
}
esp_err_t err = ESP_OK;
ZH_PCF8574_LOGI("PCF8574 read started.");
ZH_PCF8574_CHECK(handle != NULL || reg != NULL, ESP_ERR_INVALID_ARG, "PCF8574 read failed. Invalid argument.");
ZH_PCF8574_CHECK(handle->is_initialized == true, ESP_ERR_NOT_FOUND, "PCF8574 read failed. PCF8574 not initialized.");
#ifdef CONFIG_IDF_TARGET_ESP8266
i2c_cmd_handle_t i2c_cmd_handle = i2c_cmd_link_create();
i2c_master_start(i2c_cmd_handle);
i2c_master_write_byte(i2c_cmd_handle, handle->i2c_address << 1 | I2C_MASTER_READ, true);
i2c_master_read_byte(i2c_cmd_handle, &handle->gpio_status, I2C_MASTER_NACK);
i2c_master_stop(i2c_cmd_handle);
err = i2c_master_cmd_begin(handle->i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS);
esp_err_t err = i2c_master_cmd_begin(handle->i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(i2c_cmd_handle);
#else
err = i2c_master_receive(handle->dev_handle, &handle->gpio_status, sizeof(handle->gpio_status), 1000 / portTICK_PERIOD_MS);
esp_err_t err = i2c_master_receive(handle->dev_handle, &handle->gpio_status, sizeof(handle->gpio_status), 1000 / portTICK_PERIOD_MS);
#endif
if (err != ESP_OK)
{
ESP_LOGE(TAG, "PCF8574 read fail. I2C driver error at line %d.", __LINE__);
return ESP_ERR_INVALID_RESPONSE;
}
ZH_PCF8574_CHECK(err == ESP_OK, err, "PCF8574 read failed. I2C driver error.");
*reg = handle->gpio_status;
ESP_LOGI(TAG, "PCF8574 read success.");
ZH_PCF8574_LOGI("PCF8574 read completed successfully.");
return ESP_OK;
}
esp_err_t _zh_write_register(zh_pcf8574_handle_t *handle, uint8_t reg)
static esp_err_t _zh_pcf8574_write_register(zh_pcf8574_handle_t *handle, uint8_t reg)
{
ESP_LOGI(TAG, "PCF8574 write begin.");
if (handle == NULL)
{
ESP_LOGE(TAG, "PCF8574 write fail. Invalid argument.");
return ESP_ERR_INVALID_ARG;
}
if (handle->is_initialized == false)
{
ESP_LOGE(TAG, "PCF8574 write fail. PCF8574 not initialized.");
return ESP_ERR_NOT_FOUND;
}
esp_err_t err = ESP_OK;
ZH_PCF8574_LOGI("PCF8574 write started.");
ZH_PCF8574_CHECK(handle != NULL, ESP_ERR_INVALID_ARG, "PCF8574 write failed. Invalid argument.");
ZH_PCF8574_CHECK(handle->is_initialized == true, ESP_ERR_NOT_FOUND, "PCF8574 write failed. PCF8574 not initialized.");
#ifdef CONFIG_IDF_TARGET_ESP8266
i2c_cmd_handle_t i2c_cmd_handle = i2c_cmd_link_create();
i2c_master_start(i2c_cmd_handle);
i2c_master_write_byte(i2c_cmd_handle, handle->i2c_address << 1 | I2C_MASTER_WRITE, true);
i2c_master_write_byte(i2c_cmd_handle, reg, true);
i2c_master_stop(i2c_cmd_handle);
err = i2c_master_cmd_begin(handle->i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS);
esp_err_t err = i2c_master_cmd_begin(handle->i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(i2c_cmd_handle);
#else
err = i2c_master_transmit(handle->dev_handle, &reg, sizeof(reg), 1000 / portTICK_PERIOD_MS);
esp_err_t err = i2c_master_transmit(handle->dev_handle, &reg, sizeof(reg), 1000 / portTICK_PERIOD_MS);
#endif
if (err != ESP_OK)
{
ESP_LOGE(TAG, "PCF8574 write fail. I2C driver error at line %d.", __LINE__);
return ESP_ERR_INVALID_RESPONSE;
}
ZH_PCF8574_CHECK(err == ESP_OK, err, "PCF8574 write failed. I2C driver error.");
handle->gpio_status = reg;
ESP_LOGI(TAG, "PCF8574 write success.");
ZH_PCF8574_LOGI("PCF8574 write completed successfully.");
return ESP_OK;
}