esp_atcontrol_simpletest.py

# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
# SPDX-License-Identifier: MIT

import time
import board
import busio
from digitalio import DigitalInOut
from digitalio import Direction
from adafruit_espatcontrol import adafruit_espatcontrol


# Get wifi details and more from a secrets.py file
try:
    from secrets import secrets
except ImportError:
    print("WiFi secrets are kept in secrets.py, please add them there!")
    raise
# Debug Level
# Change the Debug Flag if you have issues with AT commands    
debugflag=False

if board.board_id == "challenger_rp2040_wifi":
    RX = board.ESP_RX
    TX = board.ESP_TX
    resetpin = DigitalInOut(board.WIFI_RESET)
    rtspin = False
    uart = busio.UART(TX, RX, baudrate=11520)
    esp_boot = DigitalInOut(board.WIFI_MODE)
    esp_boot.direction = Direction.OUTPUT
    esp_boot.value = True
else:
    RX = board.ESP_TX
    TX = board.ESP_RX
    resetpin = DigitalInOut(board.ESP_WIFI_EN)
    rtspin = DigitalInOut(board.ESP_CTS)
    uart = busio.UART(TX, RX, timeout=0.1)
    esp_boot = DigitalInOut(board.ESP_BOOT_MODE)
    esp_boot.direction = Direction.OUTPUT
    esp_boot.value = True


print("ESP AT commands")
# For Boards that do not have an rtspin like challenger_rp2040_wifi set rtspin to False.
esp = adafruit_espatcontrol.ESP_ATcontrol(
    uart, 115200, reset_pin=resetpin, rts_pin=rtspin, debug=debugflag
)
print("Resetting ESP module")
esp.hard_reset()

first_pass = True
while True:
    try:
        if first_pass:
# Some ESP do not return OK on AP Scan. 
# See https://github.com/adafruit/Adafruit_CircuitPython_ESP_ATcontrol/issues/48
# Comment out the next 3 lines if you get a No OK response to AT+CWLAP
            print("Scanning for AP's")
            for ap in esp.scan_APs():
                print(ap)
            print("Checking connection...")
            # secrets dictionary must contain 'ssid' and 'password' at a minimum
            print("Connecting...")
            esp.connect(secrets)
            print("Connected to AT software version ", esp.version)
            print("IP address ", esp.local_ip)
            first_pass = False
        print("Pinging 8.8.8.8...", end="")
        print(esp.ping("8.8.8.8"))
        time.sleep(10)
    except (ValueError, RuntimeError, adafruit_espatcontrol.OKError) as e:
        print("Failed to get data, retrying\n", e)
        print("Resetting ESP module")
        esp.hard_reset()
        continue