Dwi259eti Firmware Apr 2026

static void at_cmd_temp_handler(at_cmd_ctx_t *ctx, const char *params)

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

Write this spec in a short markdown file ( FEATURE_SPEC.md ). It will be your contract with the code. Below is a generic flow; adapt the file names and APIs to the DWI259ETI SDK you have. 4.1 Add New Source Files (or extend existing ones) src/ ├─ feature/ │ ├─ my_feature.c // core logic │ └─ my_feature.h └─ at/ └─ at_cmd_myfeat.c // AT parser glue (if needed) 4.2 Core Logic ( my_feature.c ) #include "my_feature.h" #include "driver/gpio.h" #include "driver/i2c.h" #include "nvs.h" #include "esp_log.h" Dwi259eti Firmware

nvs_handle_t h; ESP_ERROR_CHECK(nvs_open("my_feat", NVS_READWRITE, &h)); ESP_ERROR_CHECK(nvs_set_blob(h, "threshold", &thr, sizeof(thr))); ESP_ERROR_CHECK(nvs_commit(h)); nvs_close(h); return ESP_OK;

If the feature is periodic, spawn a FreeRTOS task: If the feature is periodic

float temperature; if (my_feature_get_temperature(&temperature) == 0) at_reply("%0.2f", temperature); else at_reply_error();

void my_feature_task(void *arg)

static const char *TAG = "my_feature";