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// Convert raw to °C (example conversion) int16_t raw_temp = (raw[0] << 8) Keeping the sensor‑reading code isolated makes unit‑testing easier and prevents the AT parser from becoming a monolith. 4.3 Glue Layer – AT Command (if applicable) // at_cmd_myfeat.c #include "at.h" #include "my_feature.h"

at_register_command("AT+TEMP?", at_cmd_temp_handler, AT_CMD_TYPE_QUERY); Dwi259eti Firmware

float temperature; if (my_feature_get_temperature(&temperature) == 0) at_reply("%0.2f", temperature); else at_reply_error(); // Convert raw to °C (example conversion) int16_t

while (1) float temp; if (my_feature_get_temperature(&temp) == 0) ESP_LOGI(TAG, "Temp = %.2f°C", temp); // Optionally publish via MQTT vTaskDelay(pdMS_TO_TICKS(10000)); // 10 s interval while (1) float temp

// Save a float threshold to NVS esp_err_t my_feature_save_threshold(float thr)

void my_feature_task(void *arg)