Test code for ESP32SPI Issue #74 / PR #75 https://github.com/adafruit/Adafruit_CircuitPython_ESP32SPI/pull/75#issuecomment-533761570

code.py

import board
import time
from digitalio import DigitalInOut
from adafruit_esp32spi import adafruit_esp32spi
from secrets import secrets

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

    # these should always agree?
    if esp_is_connected and (esp_status == 3):
        pass  # already connected
    else:
        try:
            print('Connecting...   ', end='')
            """ 'Will retry up to 10 times and return on success 
            or raise an exception on failure' (1s b/t retries) """
            esp.connect_AP(secrets['ssid'], secrets['password'])
            esp_status = esp.status
            print(esp_status)
        except RuntimeError as e:
            print('ESP Error: ', e)
    return esp_status

print()
spi = board.SPI()
try:  # PyPortal, etc.
    esp32_cs = DigitalInOut(board.ESP_CS)
    esp32_ready = DigitalInOut(board.ESP_BUSY)
    esp32_reset = DigitalInOut(board.ESP_RESET)
except AttributeError:  # Airlift FeatherWing compatible
    esp32_cs = DigitalInOut(board.D13)  # SAMD51/M4 Red LED
    esp32_ready = DigitalInOut(board.D11)
    esp32_reset = DigitalInOut(board.D12)
esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset, debug=False)

try:
    espfw = ''
    for _ in esp.firmware_version:
        espfw += '{:c}'.format(_)
    print('ESP Firmware:  ', espfw)
    esp_status = esp.status
    print('ESP Status:    ', esp_status)
except RuntimeError as e:
    print('ESP Error:', e)

try:
    esp_connect()
    if esp.is_connected:
        print('            BSSID     RSSI SSID')
        # NEW: bssid
        print('{5:02X}:{4:02X}:{3:02X}:{2:02X}:{1:02X}:{0:02X}'.format(*esp.bssid), end='')
        print('     {: 4d} {:s}'.format(esp.rssi, str(esp.ssid, 'utf-8')), end='')
        print(' ping=%dms (LAN)' % esp.ping(esp.network_data['gateway']))
except RuntimeError as e:
    print('ESP Error:', e)
print()

while True:
    print('Scanning... BSSID  Ch RSSI SSID')
    try:
        for ap in esp.scan_networks():
            # NEW: bssid, channel
            print('{5:02X}:{4:02X}:{3:02X}:{2:02X}:{1:02X}:{0:02X}'.format(*ap['bssid']), end='')
            print(' {: 3d} {: 4d} {:s}'.format(ap['channel'], ap['rssi'], str(ap['ssid'], 'utf-8')))
    except (RuntimeError, KeyError) as e:
        print('ESP Error:', e)
    print()
    time.sleep(10)