finally a working I2C connection

main/main.c

@@ -64,6 +64,28 @@ void app_main(void)
    my_i2c_setup();
    my_bme280_init();
 
+   int8_t rslt;
+   uint32_t count = 0;
+   char msgbuf[128];
+   struct bme280_data comp_data;
+   while(1) { 
+      // take BME280 readings. 
+      rslt = bme280_set_sensor_mode(BME280_NORMAL_MODE, &bme280);
+      bme280.delay_ms(40);
+      rslt = bme280_get_sensor_data(BME280_ALL, &comp_data, &bme280);
+      if (rslt != BME280_OK)
+         ESP_LOGI(TAG, "bme280_get_sensor_data() returned %d", rslt);
+
+      snprintf(msgbuf, sizeof(msgbuf), "%.1f C, %0.2f hPa, %0.1f%% (#%04u)",
+            comp_data.temperature, comp_data.pressure / 100.,
+            comp_data.humidity, count++);
+
+      if (count >= 9999)
+         count = 0;
+
+      ESP_LOGI(TAG, "%s", msgbuf);
+      vTaskDelay(1600/portTICK_PERIOD_MS);
+   }
 }
 
 static esp_err_t root_get_handler(httpd_req_t *req)