Setting up MicroPython on ESP32

connect_to_wifi.py

import network
sta_if = network.WLAN(network.STA_IF)
sta_if.active(True)
sta_if.connect("ssid", "pass")
sta_if.isconnected()
sta_if.ifconfig()

import urequests
response = urequests.get("http://ipinfo.io")
ip_info = response.json()
print(f"{ip_info['ip']}, you're from {ip_info['city']}, {ip_info['region']}, {ip_info['country']}, {ip_info['timezone']}.")

flash_and_tty.sh

# Download MicroPython for ESP32: https://micropython.org/download/esp32/
# sudo pacman -Syu screen esptool 
# pamac install adafruit-ampy

# Erase
esptool.py --chip esp32 --port /dev/ttyUSB0 erase_flash

# Flash
esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 460800 write_flash -z 0x1000 ~/Downloads/esp32-20220618-v1.19.1.bin

# TTY
screen /dev/ttyUSB0 115200
# ctrl+a e - paste mode
# ctrl+a d - exit paste mode / soft reboot
# ctrl+a k - kill screen

echo """print('hello, let\'s blink the blue onboard led 3 times')

from machine import Pin
import time

for x in range(6):
    led_state = not (x % 2)
    print(f'led_state: {int(led_state)}')
    Pin(2, Pin.OUT).value(led_state)
    time.sleep(1)""" > esp32_test.py

# Run program, capture stdout, display stdout at termination
ampy --port /dev/ttyUSB0 run test.py

# Run program
ampy --port /dev/ttyUSB0 run --no-output test.py
# Stream stdout
screen /dev/tty/USB0 115200

# Upload program to run on boot (soft reboot / reboot)
ampy --port /dev/ttyUSB0 put esp32_test.py /main.py

# Download program
ampy --port /dev/ttyUSB0 get /main.py

# Replace "get" with one of: ls mkdir rm rmdir, for unix-like commands