Send internal temperature reading to Favoriot IoT platform.

code.py

################################################################################
# Example for Favoriot.
# Send internal temperature reading to Favoriot IoT platform.
#
# Hardware:
# - Maker Pi Pico or Maker Pi RP2040
# - ESP8266 WiFi module with Espressif AT Firmware v2.2.0 and above.
#
# Dependencies:
# - adafruit_requests
# - adafruit_espatcontrol
#
# Instructions:
# - Copy the lib folder to the CIRCUITPY device.
# - Modify the keys in secrets.py and copy to the CIRCUITPY device.
# - Make sure the UART pins are defined correctly according to your hardware.
#
#
# Author: Cytron Technologies
# Website: www.cytron.io
# Email: support@cytron.io
################################################################################

import time
import board
import digitalio
import microcontroller
import busio
import adafruit_requests as requests
import adafruit_espatcontrol.adafruit_espatcontrol_socket as socket
from adafruit_espatcontrol import adafruit_espatcontrol
import json


# Get wifi details and more from a secrets.py file
try:
    from secrets import secrets
except ImportError:
    print("All secret keys are kept in secrets.py, please add them there!")
    raise

# Thingspeak API url.
API_URL = "https://apiv2.favoriot.com/v2/streams"
headers = {
    "Content-Type": "application/json",
    "apikey": secrets["favoriot_apikey"],
}

# Initialize LED and button.
led = digitalio.DigitalInOut(board.GP0)
led.direction = digitalio.Direction.OUTPUT

button = digitalio.DigitalInOut(board.GP20)
button.direction = digitalio.Direction.INPUT
button.pull = digitalio.Pull.UP

# Initialize UART connection to the ESP8266 WiFi Module.
RX = board.GP17
TX = board.GP16
uart = busio.UART(TX, RX, receiver_buffer_size=2048)  # Use large buffer as we're not using hardware flow control.

esp = adafruit_espatcontrol.ESP_ATcontrol(uart, 115200, debug=False)
requests.set_socket(socket, esp)

print("Resetting ESP module")
esp.soft_reset()

while True:
    try:
        # Make sure WiFi is connected.
        while not esp.is_connected:
            print("Connecting...")
            esp.connect(secrets)

        root = {}
        root["device_developer_id"] = "MakerPiPico@Idriszmy"
        data = {}
        data["temperature"] = round(microcontroller.cpu.temperature, 1)
        root["data"] = data
        body = json.dumps(root)
        print("\nData send:\n{}".format(body))

        response = requests.post(API_URL, headers=headers, data=body)
        print("Response:\n{}".format(response.text))

        time.sleep(30)

    except (ValueError, RuntimeError, adafruit_espatcontrol.OKError) as e:
        print("Failed, retrying\n", e)

secrets.py

# Secret Keys.

secrets = {
    "ssid"                     : "Your WiFi SSID",
    "password"                 : "Your WiFi password",
    "favoriot_apikey"          : "Your Favoriot API key",
    "favoriot_token"           : "Your Favoriot token",
}