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@ -5,6 +5,10 @@
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1. ESP8266 RTOS_SDK v3.4
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2. ESP32 ESP-IDF v5.2
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## Features
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1. Autodetect sensor type.
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## Using
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In an existing project, run the following command to install the component:
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54
zh_aht.c
54
zh_aht.c
@ -44,18 +44,18 @@ esp_err_t zh_aht_init(const zh_aht_init_config_t *config)
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}
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#endif
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esp_err_t err = ESP_OK;
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uint8_t command = I2C_STATUS_READ_COMMAND;
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uint8_t status_read_command = I2C_STATUS_READ_COMMAND;
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uint8_t sensor_data = 0;
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#ifdef CONFIG_IDF_TARGET_ESP8266
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i2c_cmd_handle_t i2c_cmd_handle = i2c_cmd_link_create();
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i2c_master_start(i2c_cmd_handle);
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i2c_master_write_byte(i2c_cmd_handle, I2C_ADDRESS << 1 | I2C_MASTER_WRITE, true);
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i2c_master_write_byte(i2c_cmd_handle, command, true);
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i2c_master_write_byte(i2c_cmd_handle, status_read_command, true);
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i2c_master_stop(i2c_cmd_handle);
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esp_err = i2c_master_cmd_begin(_init_config.i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS);
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i2c_cmd_link_delete(i2c_cmd_handle);
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#else
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err = i2c_master_transmit(_aht_handle, &command, sizeof(command), 1000 / portTICK_PERIOD_MS);
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err = i2c_master_transmit(_aht_handle, &status_read_command, sizeof(status_read_command), 1000 / portTICK_PERIOD_MS);
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#endif
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if (err != ESP_OK)
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{
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@ -80,29 +80,26 @@ esp_err_t zh_aht_init(const zh_aht_init_config_t *config)
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}
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if ((sensor_data & 0x08) == 0) // If sensor is not calibrated.
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{
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sensor_data = 0;
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uint8_t command[] = {I2C_INIT_COMMAND};
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command[0] = I2C_INIT_AHT2X_FIRST_BYTE;
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uint8_t init_command[] = {I2C_INIT_COMMAND};
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uint8_t check_command = I2C_INIT_AHT2X_FIRST_BYTE;
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bool is_first_check = false;
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INIT_SENSOR:;
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#ifdef CONFIG_IDF_TARGET_ESP8266
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i2c_cmd_handle_t i2c_cmd_handle = i2c_cmd_link_create();
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i2c_master_start(i2c_cmd_handle);
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i2c_master_write_byte(i2c_cmd_handle, I2C_ADDRESS << 1 | I2C_MASTER_WRITE, true);
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i2c_master_write_byte(i2c_cmd_handle, command[0], true);
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i2c_master_write_byte(i2c_cmd_handle, command[1], true);
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i2c_master_write_byte(i2c_cmd_handle, command[2], true);
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i2c_master_write_byte(i2c_cmd_handle, check_command, true);
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i2c_master_stop(i2c_cmd_handle);
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esp_err = i2c_master_cmd_begin(_init_config.i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS);
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i2c_cmd_link_delete(i2c_cmd_handle);
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#else
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err = i2c_master_transmit(_aht_handle, command, sizeof(command), 1000 / portTICK_PERIOD_MS);
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err = i2c_master_transmit(_aht_handle, &check_command, sizeof(check_command), 1000 / portTICK_PERIOD_MS);
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#endif
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if (err != ESP_OK)
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{
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if (err == ESP_ERR_INVALID_STATE && is_first_check == false)
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{
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command[0] = I2C_INIT_AHT1X_FIRST_BYTE;
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check_command = I2C_INIT_AHT1X_FIRST_BYTE;
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is_first_check = true;
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goto INIT_SENSOR;
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}
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@ -112,6 +109,25 @@ esp_err_t zh_aht_init(const zh_aht_init_config_t *config)
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return ESP_ERR_INVALID_RESPONSE;
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}
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}
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init_command[0] = check_command;
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#ifdef CONFIG_IDF_TARGET_ESP8266
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i2c_cmd_handle_t i2c_cmd_handle = i2c_cmd_link_create();
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i2c_master_start(i2c_cmd_handle);
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i2c_master_write_byte(i2c_cmd_handle, I2C_ADDRESS << 1 | I2C_MASTER_WRITE, true);
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i2c_master_write_byte(i2c_cmd_handle, init_command[0], true);
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i2c_master_write_byte(i2c_cmd_handle, init_command[1], true);
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i2c_master_write_byte(i2c_cmd_handle, init_command[2], true);
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i2c_master_stop(i2c_cmd_handle);
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esp_err = i2c_master_cmd_begin(_init_config.i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS);
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i2c_cmd_link_delete(i2c_cmd_handle);
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#else
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err = i2c_master_transmit(_aht_handle, init_command, sizeof(init_command), 1000 / portTICK_PERIOD_MS);
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#endif
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if (err != ESP_OK)
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{
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ESP_LOGE(TAG, "AHT initialization fail. I2C driver error at line %d.", __LINE__);
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return ESP_ERR_INVALID_RESPONSE;
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}
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}
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ESP_LOGI(TAG, "AHT initialization success.");
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_is_initialized = true;
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@ -133,19 +149,19 @@ esp_err_t zh_aht_read(float *humidity, float *temperature)
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}
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esp_err_t err = ESP_OK;
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uint8_t sensor_data[I2C_MAX_DATA_SIZE] = {0};
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uint8_t command[] = {I2C_DATA_READ_COMMAND};
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uint8_t data_read_command[] = {I2C_DATA_READ_COMMAND};
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#ifdef CONFIG_IDF_TARGET_ESP8266
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i2c_cmd_handle_t i2c_cmd_handle = i2c_cmd_link_create();
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i2c_master_start(i2c_cmd_handle);
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i2c_master_write_byte(i2c_cmd_handle, I2C_ADDRESS << 1 | I2C_MASTER_WRITE, true);
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i2c_master_write_byte(i2c_cmd_handle, command[0], true);
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i2c_master_write_byte(i2c_cmd_handle, command[1], true);
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i2c_master_write_byte(i2c_cmd_handle, command[2], true);
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i2c_master_write_byte(i2c_cmd_handle, data_read_command[0], true);
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i2c_master_write_byte(i2c_cmd_handle, data_read_command[1], true);
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i2c_master_write_byte(i2c_cmd_handle, data_read_command[2], true);
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i2c_master_stop(i2c_cmd_handle);
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esp_err = i2c_master_cmd_begin(_init_config.i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS);
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i2c_cmd_link_delete(i2c_cmd_handle);
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#else
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err = i2c_master_transmit(_aht_handle, command, sizeof(command), 1000 / portTICK_PERIOD_MS);
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err = i2c_master_transmit(_aht_handle, data_read_command, sizeof(data_read_command), 1000 / portTICK_PERIOD_MS);
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#endif
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if (err != ESP_OK)
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{
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@ -200,17 +216,17 @@ esp_err_t zh_aht_reset(void)
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return ESP_ERR_NOT_FOUND;
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}
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esp_err_t err = ESP_OK;
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uint8_t command = I2C_RESET_COMMAND;
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uint8_t reset_command = I2C_RESET_COMMAND;
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#ifdef CONFIG_IDF_TARGET_ESP8266
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i2c_cmd_handle_t i2c_cmd_handle = i2c_cmd_link_create();
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i2c_master_start(i2c_cmd_handle);
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i2c_master_write_byte(i2c_cmd_handle, I2C_ADDRESS << 1 | I2C_MASTER_WRITE, true);
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i2c_master_write_byte(i2c_cmd_handle, command, true);
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i2c_master_write_byte(i2c_cmd_handle, reset_command, true);
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i2c_master_stop(i2c_cmd_handle);
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esp_err = i2c_master_cmd_begin(_init_config.i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS);
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i2c_cmd_link_delete(i2c_cmd_handle);
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#else
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err = i2c_master_transmit(_aht_handle, &command, sizeof(command), 1000 / portTICK_PERIOD_MS);
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err = i2c_master_transmit(_aht_handle, &reset_command, sizeof(reset_command), 1000 / portTICK_PERIOD_MS);
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#endif
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if (err != ESP_OK)
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{
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