renamed: main/include/sensor.h -> main/include/sht31.h

modified:   main/src/main.c
deleted:    main/src/sensor.c
new file:   main/src/sht31.c
modified:   sdkconfig

firmware/main/src/sht31.c

@@ -0,0 +1,145 @@
+#include "sht31.h"
+#include <stdio.h>
+#include <driver/i2c.h>
+//#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+#include <esp_log.h>
+
+#define SDA_PIN GPIO_NUM_2
+#define CLK_PIN GPIO_NUM_14
+#define SENSOR_ADDR 0x45 //default address is 0x44 (pin 2 logic low). We chose 0x45 with logic high in v0.9 and 0x44 with newer versions where second sensor is removed.
+#define SHT31_MEASURE_CMD_HIGHREP 0x2400
+
+static const char * TAG = "sht31.c";
+
+// Dummy implementations for the purpose of this example
+// Replace these with actual sensor initialization and data retrieval logic
+
+static const i2c_config_t config = {
+    .mode             = I2C_MODE_MASTER,
+    .sda_io_num       = GPIO_NUM_2,
+    .scl_io_num       = GPIO_NUM_14,
+    .sda_pullup_en    = GPIO_PULLUP_DISABLE,
+    .scl_pullup_en    = GPIO_PULLUP_DISABLE,
+    .clk_stretch_tick = 5
+};
+
+// Function to initialize the sensor
+esp_err_t sht31_init(void) {
+    esp_err_t install_rc = i2c_driver_install(I2C_NUM_0, config.mode);
+    esp_err_t config_rc  = i2c_param_config(I2C_NUM_0, &config);
+    if( install_rc != ESP_OK || config_rc != ESP_OK ) {
+        printf("Sensor initialization failed!\n");
+        return ESP_FAIL;
+    }
+    printf("Sensor initialized.\n");
+    return ESP_OK;
+}
+
+// Function to get the current humidity level
+// Returns the humidity as a percentage (0-100)
+float sht31_get_humidity(void) {
+    // Read humidity data from the sensor
+    // This is a dummy value for the purpose of this example
+    float humidity = 50.0;  // Replace with actual sensor reading
+    printf("Humidity read: %.2f%%\n", humidity);
+    return humidity;
+}
+
+// Function to get the current temperature
+// Returns the temperature in degrees Celsius
+float sht31_get_temperature(void) {
+    // Read temperature data from the sensor
+    // This is a dummy value for the purpose of this example
+    float temperature = 22.0;  // Replace with actual sensor reading
+    printf("Temperature read: %.2f°C\n", temperature);
+    return temperature;
+}
+
+esp_err_t sht31_read_temp_hum(float *temperature, float *humidity)
+{
+    uint8_t data[6];
+    i2c_cmd_handle_t cmd = i2c_cmd_link_create();
+
+    // Send the measurement command
+    i2c_master_start(cmd);
+    i2c_master_write_byte(cmd, (SENSOR_ADDR << 1) | I2C_MASTER_WRITE, true);
+    i2c_master_write_byte(cmd, SHT31_MEASURE_CMD_HIGHREP >> 8, true);
+    i2c_master_write_byte(cmd, SHT31_MEASURE_CMD_HIGHREP & 0xFF, true);
+    i2c_master_stop(cmd);
+    esp_err_t ret = i2c_master_cmd_begin(I2C_NUM_0, cmd, 1000 / portTICK_RATE_MS);
+    i2c_cmd_link_delete(cmd);
+    if (ret != ESP_OK) {
+        ESP_LOGE(TAG, "Failed to send command to SHT31");
+        return ret;
+    }
+
+    vTaskDelay(500 / portTICK_RATE_MS);
+
+    // Request 6 bytes of data from the sensor
+    cmd = i2c_cmd_link_create();
+    i2c_master_start(cmd);
+    i2c_master_write_byte(cmd, (SENSOR_ADDR << 1) | I2C_MASTER_READ, true);
+    i2c_master_read(cmd, data, sizeof(data) - 1, I2C_MASTER_ACK);
+    i2c_master_read_byte(cmd, data + sizeof(data) - 1, I2C_MASTER_NACK);
+    i2c_master_stop(cmd);
+    ret = i2c_master_cmd_begin(I2C_NUM_0, cmd, 1000 / portTICK_RATE_MS);
+    i2c_cmd_link_delete(cmd);
+    if (ret != ESP_OK) {
+        ESP_LOGE(TAG, "Failed to read data from SHT31");
+        return ret;
+    }
+
+    // Process the data
+    uint16_t t = (data[0] << 8) | data[1];
+    uint16_t h = (data[3] << 8) | data[4];
+
+    *temperature = -45 + 175 * ((float)t / 65535.0);
+    *humidity = 100 * ((float)h / 65535.0);
+
+    return ESP_OK;
+}
+
+esp_err_t sht31_read_temp_hum_int(int *temperature, int *humidity)
+{
+    uint8_t data[6];
+    i2c_cmd_handle_t cmd = i2c_cmd_link_create();
+
+    // Send the measurement command
+    i2c_master_start(cmd);
+    i2c_master_write_byte(cmd, (SENSOR_ADDR << 1) | I2C_MASTER_WRITE, true);
+    i2c_master_write_byte(cmd, SHT31_MEASURE_CMD_HIGHREP >> 8, true);
+    i2c_master_write_byte(cmd, SHT31_MEASURE_CMD_HIGHREP & 0xFF, true);
+    i2c_master_stop(cmd);
+    esp_err_t ret = i2c_master_cmd_begin(I2C_NUM_0, cmd, 1000 / portTICK_RATE_MS);
+    i2c_cmd_link_delete(cmd);
+    if (ret != ESP_OK) {
+        ESP_LOGE(TAG, "Failed to send command to SHT31");
+        return ret;
+    }
+
+    vTaskDelay(500 / portTICK_RATE_MS);
+
+    // Request 6 bytes of data from the sensor
+    cmd = i2c_cmd_link_create();
+    i2c_master_start(cmd);
+    i2c_master_write_byte(cmd, (SENSOR_ADDR << 1) | I2C_MASTER_READ, true);
+    i2c_master_read(cmd, data, sizeof(data) - 1, I2C_MASTER_ACK);
+    i2c_master_read_byte(cmd, data + sizeof(data) - 1, I2C_MASTER_NACK);
+    i2c_master_stop(cmd);
+    ret = i2c_master_cmd_begin(I2C_NUM_0, cmd, 1000 / portTICK_RATE_MS);
+    i2c_cmd_link_delete(cmd);
+    if (ret != ESP_OK) {
+        ESP_LOGE(TAG, "Failed to read data from SHT31");
+        return ret;
+    }
+
+    // Process the data
+    uint16_t t = (data[0] << 8) | data[1];
+    uint16_t h = (data[3] << 8) | data[4];
+
+    *temperature = -45 + 175 * ((float)t / 65535.0);
+    *humidity = 100 * ((float)h / 65535.0);
+
+    return ESP_OK;
+}