Feather M4 + Airlift FeatherWing (ESP32SPI) + Ethernet FeatherWing (WIZNET5K)

code.py

import time
import board
import busio
import digitalio
import adafruit_requests as requests
from adafruit_wiznet5k.adafruit_wiznet5k import WIZNET5K
import adafruit_wiznet5k.adafruit_wiznet5k_socket as wiznet5k_socket
from adafruit_esp32spi import adafruit_esp32spi
import adafruit_esp32spi.adafruit_esp32spi_socket as esp_socket
from secrets import secrets

# Feather M4 + Airlift FeatherWing + Ethernet FeatherWing
# example customized from https://github.com/adafruit/Adafruit_CircuitPython_Wiznet5k
print("Wiznet5k + ESP32SPI WebClient Test")

TEXT_URL = "http://wifitest.adafruit.com/testwifi/index.html"
JSON_URL = "http://api.coindesk.com/v1/bpi/currentprice/USD.json"


def esp_connect():
    esp_status = 255
    try:
        esp_status = esp.status
    except RuntimeError as e:
        print("ESP Status Error: ", e)
    try:
        esp_is_connected = esp.is_connected
    except RuntimeError as e:
        print("ESP Is Connected Error: ", e)

    # these should never disagree
    if esp_status == 3 and esp_is_connected:
        pass  # already connected
    else:
        try:
            print("ESP Connecting...", esp_status, esp_status_text(esp_status), "Connected?", esp_is_connected)
            # "Will retry up to 10 times and return on success
            # or raise an exception on failure"
            # [1 second between each retry]
            esp.connect_AP(secrets['ssid'], secrets['password'])
            esp_status = esp.status
            esp_is_connected = esp.is_connected
            print("                 ", esp_status, esp_status_text(esp_status), "Connected?", esp_is_connected)
        except RuntimeError as e:
            print("ESP Connection Error: ", e)
    return esp_status, esp_is_connected

def esp_reset():
    print("ESP Reset BEGIN")
    try:
        esp.reset()
    except RuntimeError as e:
        print("ESP Reset Error:", e)
    time.sleep(1)
    print("ESP Reset END")

def esp_status_text(num):
    stat = {0: 'WL_IDLE_STATUS',
            1: 'WL_NO_SSID_AVAIL',
            2: 'WL_SCAN_COMPLETED',
            3: 'WL_CONNECTED',
            4: 'WL_CONNECT_FAILED',
            5: 'WL_CONNECTION_LOST',
            6: 'WL_DISCONNECTED',
            7: 'WL_AP_LISTENING',
            8: 'WL_AP_CONNECTED',
            9: 'WL_AP_FAILED',
            10: 'WL_NO_SHIELD', }
    if num in stat:
        return stat[num]
    else:
        return 'WL_UNDEFINED'


spi = board.SPI()


# eth_cs = digitalio.DigitalInOut(board.D10)
# customized CS pin b/c ESP32 needs GPIO0/D10 available for reboots:
eth_cs = digitalio.DigitalInOut(board.A5)
# Initialize ethernet interface with DHCP
eth = WIZNET5K(spi, eth_cs, debug=False)


esp32_cs = digitalio.DigitalInOut(board.D13)  # M4 Red LED
esp32_ready = digitalio.DigitalInOut(board.D11)
esp32_reset = digitalio.DigitalInOut(board.D12)
# esp32_gpio0 = DigitalInOut(board.D10)  # optional
esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)

esp_reset()

# don't proceed w/o an ESP32
print("Checking ESP32...")
while True:
    try:
        esp_firmware_version = esp.firmware_version
        espfw = ''
        for _ in esp_firmware_version:
            if _ != 0:
                espfw += "{:c}".format(_)
        print("ESP Firmware:    ", espfw)
        esp_MAC_address = esp.MAC_address
        esp_status = esp.status
        esp_is_connected = esp.is_connected
        print("ESP Status:      ", esp_status, esp_status_text(esp_status), "Connected?", esp_is_connected)
        break
    except RuntimeError as e:
        print("ESP Access Error:", e)
        esp_reset()

# don't proceed w/o any Wi-Fi APs
print("Scanning WiFi...")
while True:
    try:
        esp_scan_networks = esp.scan_networks()
        for ap in esp_scan_networks:
            bssid = ap['bssid']
            print("  {5:02X}:{4:02X}:{3:02X}:{2:02X}:{1:02X}:{0:02X}".format(*bssid), end=' ')
            print("{: 3d}".format(ap['channel']), end=' ')
            print("{: 4d}".format(ap['rssi']), end=' ')
            print("{: 1d}".format(ap['encryption']), end=' ')
            print("{:s}".format(str(ap['ssid'], 'utf-8')))
        break
    except (RuntimeError, KeyError) as e:
        print("ESP AP Scan Error:", e)
        esp_reset()

# don't proceed w/o a Wi-Fi connection
while True:
    try:
        if esp_connect() == (3, True):
            print("RSSI:   ", esp.rssi)
            print("SSID:    ", str(esp.ssid, 'utf-8'))
            print("BSSID:    {5:02X}:{4:02X}:{3:02X}:{2:02X}:{1:02X}:{0:02X}".format(*esp.bssid))
            print("IP:      ", esp.pretty_ip(esp.ip_address))
            print("Netmask:  %d.%d.%d.%d" % (esp.network_data['netmask'][0], esp.network_data['netmask'][1], 
                                             esp.network_data['netmask'][2], esp.network_data['netmask'][3]))
            print("Gateway:  %d.%d.%d.%d" % (esp.network_data['gateway'][0], esp.network_data['gateway'][1], 
                                             esp.network_data['gateway'][2], esp.network_data['gateway'][3]))
            print("LAN ping: %dms" % esp.ping(esp.network_data['gateway']))
            print("WAN ping: %dms" % esp.ping('adafruit.com'))
            break
    except RuntimeError as e:
        print("ESP Wi-Fi Error:", e)
        esp_reset()


# Initialize a requests object with a wi-fi socket interface
requests.set_socket(esp_socket, esp)

print("Fetching text from", TEXT_URL)
r = requests.get(TEXT_URL)
print('-'*40)
print(r.text)
print('-'*40)
r.close()

print()
print("Fetching json from", JSON_URL)
r = requests.get(JSON_URL)
print('-'*40)
print(r.json())
print('-'*40)
r.close()


print("Checking Ethernet...")
print("Chip Version:", eth.chip)
print("MAC Address:", [hex(i) for i in eth.mac_address])
print("IP Address:", eth.pretty_ip(eth.ip_address))
print("adafruit.com DNS: %s" %eth.pretty_ip(eth.get_host_by_name("adafruit.com")))

# Initialize a requests object with an ethernet socket and interface
requests.set_socket(wiznet5k_socket, eth)
#eth._debug = True

print("Fetching text from", TEXT_URL)
r = requests.get(TEXT_URL)
print('-'*40)
print(r.text)
print('-'*40)
r.close()

print()
print("Fetching json from", JSON_URL)
r = requests.get(JSON_URL)
print('-'*40)
print(r.json())
print('-'*40)
r.close()


print("Done!")