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Socket Feature Availability

                               CircuitPython  CircuitPython
                CPython        ESP32SPI       ESP32-S2

TCP Server      Yes            Not Impl.      Yes

TCP Client      Yes            Yes            Yes

UDP Server      Yes            Not Impl.      Yes

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# server code:
# https://github.com/adafruit/circuitpython/blob/main/tests/circuitpython-manual/socketpool/client/host-server.py

import board
from digitalio import DigitalInOut
from adafruit_esp32spi import adafruit_esp32spi
import adafruit_esp32spi.adafruit_esp32spi_socket as socket
import adafruit_requests as requests
from secrets import secrets

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import wifi
import socketpool
import struct
import time
import sys
from secrets import secrets

NTP_TO_UNIX_EPOCH = 2208988800  # 1970-01-01 00:00:00

packet = bytearray(48)

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if 'ESP32S2' in os.uname().machine:
    print("MAC", ":".join('%x' % x for x in wifi.radio.mac_address))

    # don't proceed w/o any Wi-Fi APs
    print("Scanning WiFi...")
    while True:
        try:
            for network in wifi.radio.start_scanning_networks():
                print("{0:02X}:{1:02X}:{2:02X}:{3:02X}:{4:02X}:{5:02X}".format(*network.bssid), 
                                                                               network.channel, 

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import board
import busio
import sys
import os
from digitalio import DigitalInOut

import ipaddress
import wifi
import socketpool
import ssl

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void customWiFiConnect(ssid, pass) {
  int WiFiStatusNum;
  unsigned long start;

  WiFiStatusNum = getWiFiStatus();
  if ( WiFiStatusNum != WL_CONNECTED ) {
    Serial.println("Restarting WiFi...");
    WiFi.begin(ssid, pass);
    start = millis();
    while ( WiFiStatusNum != WL_CONNECTED ) {

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# SPDX-FileCopyrightText: 2020 anecdata
#
# SPDX-License-Identifier: MIT

import microcontroller
import board

for pin in dir(microcontroller.pin):
    if isinstance(getattr(microcontroller.pin, pin), microcontroller.Pin):
        print("".join(("microcontroller.pin.", pin, "\t")), end=" ")

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# ESP32S2 pins:
# strapping pins*
#
#  0* wpu
#  2  amber LED on Cucumber
#  8  antitipated I2C SDA on production UMFeatherS2
#  9  antitipated I2C SCL on production UMFeatherS2
# 13  blue LED on UMFeatherS2
# 14  LED on Bast
# 15  I2C SDA on Bast

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# variation on https://github.com/gmeader/pyportal/blob/master/bug_demo.py

import adafruit_sdcard
import busio
import digitalio
import board
import storage
import os

# Connect to the card and mount the filesystem.

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import board
import displayio
from vectorio import Rectangle, Circle, Polygon, VectorShape
import time
import random
import gc

# Make the display context
SPLASHMAX = 2000
splash = displayio.Group(max_size=SPLASHMAX)