Editing Arduino Nano RP2040 Connect

https://docs.arduino.cc/learn/programming/arduino-and-python

https://docs.arduino.cc/hardware/nano-rp2040-connect

https://docs.arduino.cc/tutorials/nano-rp2040-connect/rp2040-python-api#imu-lsm6dsox

https://github.com/openmv/openmv/blob/918ccb937730cc759ee5709df089d9de516dc7bf/scripts/libraries/lsm6dsox.py

= Upgrade the Arduino Firmware =

TODO

= Install the MicroPython Firmware =
<b>Note:</b> Before installing [[MicroPython]] ensure you have the latest Arduino Firmware, see [[Arduino Nano RP2040 Connect#Upgrade the Arduino Firmware|Upgrade the Arduino Firmware]].

* Download the firmware for the Arduino Nano RP2040 Connect from https://micropython.org/download/ARDUINO_NANO_RP2040_CONNECT/
* Unplug the board from the computer.
* Force the board in bootloader mode by connecting GND and REC pin with a wire: https://docs.arduino.cc/tutorials/nano-rp2040-connect/rp2040-openmv-setup/

[[File:Arduino01a.jpg|x150px]]  [[File:Bootpin.jpg|x150px]] [[File:Pinout-nano.png|x150px]]

* Plug the board into the USB port on your computer, it appears as a drive in your filesystem 

[[File:Drive01.png|200px]]

* Remove the wire between the GND and REC pin (before you copy the file onto the device) 
* Copy the firmware you downloaded on the drive that showed up in your file system 

[[File:file-copy.PNG|200px]]

* Once it is completely copied to the device, unplug the board and plug in again 

[[File:Arduino02a.PNG|200px]]

* Now you should be able to use Arduino Lab for the Micropython development environment: https://labs.arduino.cc/en/labs/micropython

= Pinout of the Arduino Nano RP2040 Connect =

[[File:Pinout-nano.png|400px]]

= How to control the Builtin LED MicroPython =
this is GPIO6 (D13 in Arduino)

<syntaxhighlight lang="python" line='line'>
from machine import Pin
from time import sleep 

# using the internal LED on the Pico - pin 25 
myLED = Pin(6, Pin.OUT)

while True:
      # this switches the LED on for 1 second
      myLED.on()
      sleep(0.1)
      # this switches the LED off for 500 ms
      myLED.off()
      sleep(0.5)
</syntaxhighlight>

=== Example: Read Accelerometer and Gyro ===
<syntaxhighlight lang="python" line='line'>
import time
from lsm6dsox import LSM6DSOX

from machine import Pin, I2C
lsm = LSM6DSOX(I2C(0, scl=Pin(13), sda=Pin(12)))

while (True):
    accel_data = lsm.accel()
    print('Accelerometer: x:{:>8.3f} y:{:>8.3f} z:{:>8.3f}'.format(*accel_data))
    gyro_data = lsm.gyro()
    print('Gyroscope:     x:{:>8.3f} y:{:>8.3f} z:{:>8.3f}'.format(*gyro_data))
    print("")
    time.sleep_ms(100)
</syntaxhighlight>


= Example of a WIFI-Access Point and Webserver to control the LED =
<syntaxhighlight lang="python" line='line'>
# Wi-Fi AP Mode Example
#
# This example shows how to use Wi-Fi in Access Point mode.
# this version by Albrecht Schmidt, https://www.sketching-with-hardware.org/wiki/
# based on the following examples:
# https://randomnerdtutorials.com/esp32-esp8266-micropython-web-server/
# https://docs.arduino.cc/tutorials/nano-rp2040-connect/rp2040-python-api


import network, socket, time
from machine import Pin

led = Pin(6, Pin.OUT)              #on board LED

SSID ='Nano_RP2040_Connect_test'   # Network SSID
KEY  ='12345678'                 # Network key (should be 8 chars) - for real use, choose a safe one
HOST = ''
PORT = 80                          # 80 ist the http standard port, can also use non-privileged port e.g. 8080

# Init wlan module and connect to network
wlan = network.WLAN(network.AP_IF)
wlan.active(True)
# it seems in this version the AP mode only supports WEP
wlan.config(essid=SSID, key=KEY, security=wlan.WEP, channel=2)

print("AP mode started. SSID: {} IP: {}".format(SSID, wlan.ifconfig()[0]))


# create the webpage with a button to toggle the LED
def web_page():
  if led.value() == 1:
    led_state="ON"
  else:
    led_state="OFF"
  
  html ="""<html><head>
      <title>Nano RP2040 Connnect Web Server</title>
      <meta name="viewport" content="width=device-width, initial-scale=1">
      <link rel="icon" href="data:,">
      </head>
      <body>
        <h1>Nano RP2040 Connnect </1>
        <h2>Web Server Test</h2>
        <p>LED state: <strong>""" + led_state + """</strong></p><p><a href="/?led=on"><button class="button">ON</button></a></p>
        <p><a href="/?led=off"><button class="button button2">OFF</button></a></p>
      </body>
      </html>"""
  return html

# get started with setting up the sever sockedt
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# Bind and listen
server.bind([HOST, PORT])
server.listen(5)

# loop to deal with  http requests
while True:
  conn, addr = server.accept()
  print('Connection from %s' % str(addr))
  request = conn.recv(1024)
  request = str(request)
  print('Request Content = %s' % request)
  # check if the request includes led=on or off
  led_on = request.find('/?led=on')
  led_off = request.find('/?led=off')
  # request is 'GET /?led=on' or 'GET /?led=off' - the string starts at position 6 (counting starts at 0)
  if led_on == 6:
    print('LED ON')
    led.value(1)
  if led_off == 6:
    print('LED OFF')
    led.value(0)
  response = web_page()
  conn.send('HTTP/1.1 200 OK\n')
  conn.send('Content-Type: text/html\n')
  conn.send('Connection: close\n\n')
  conn.send(response)
  conn.close()
</syntaxhighlight>

[[Category:Arduino Nano RP2040 Connect]]
@@ Line 1: / Line 1: @@
-A simple IDE to program [[MicroPython]] on the board is the [[Arduino Lab for MicroPython]] IDE. Alternatives are, [[Jupyter Notebook]] or [[Thonny IDE]].
+https://docs.arduino.cc/learn/programming/arduino-and-python
+https://docs.arduino.cc/hardware/nano-rp2040-connect
+https://docs.arduino.cc/tutorials/nano-rp2040-connect/rp2040-python-api#imu-lsm6dsox
+https://github.com/openmv/openmv/blob/918ccb937730cc759ee5709df089d9de516dc7bf/scripts/libraries/lsm6dsox.py
 = Upgrade the Arduino Firmware =
-* Reinstall the MicroPython Firmware (version 1.22.2 tested)
+TODO
-* Install the [[Arduino IDE]]
-* Start Arduino IDE and select the Arduino RP2040 board
-* Go to Tools -> Firmware Update -> Check updates and select version 1.5.0 and press Install
 = Install the MicroPython Firmware =
@@ Line 32: / Line 35: @@
 * Now you should be able to use Arduino Lab for the Micropython development environment: https://labs.arduino.cc/en/labs/micropython
-= Pinout =
+= Pinout of the Arduino Nano RP2040 Connect =
 [[File:Pinout-nano.png|400px]]
@@ Line 155: / Line 158: @@
 </syntaxhighlight>
-==External links==
-* https://docs.arduino.cc/learn/programming/arduino-and-python
-* https://docs.arduino.cc/hardware/nano-rp2040-connect
-* https://docs.arduino.cc/tutorials/nano-rp2040-connect/rp2040-python-api#imu-lsm6dsox
-* https://github.com/openmv/openmv/blob/918ccb937730cc759ee5709df089d9de516dc7bf/scripts/libraries/lsm6dsox.py
-[[Category:Microcontrollers]]
 [[Category:Arduino Nano RP2040 Connect]]