Arduino Nano RP2040 Connect: Difference between revisions

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A simple IDE to program [[MicroPython]] on the board is the [[Arduino Lab for MicroPython]] IDE. Alternatives are, [[Jupyter Notebook]] or [[Thonny IDE]].
= Upgrade the Arduino Firmware =
* Reinstall the MicroPython Firmware (version 1.22.2 tested)
* 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 =
<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 =
[[File:Pinout-nano.png|400px]]
= How to control the Builtin LED MicroPython =
= How to control the Builtin LED MicroPython =
this is GPIO6 (D13 in Arduino)
this is GPIO6 (D13 in Arduino)
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       myLED.off()
       myLED.off()
       sleep(0.5)
       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>
</syntaxhighlight>


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   conn.close()
   conn.close()
</syntaxhighlight>
</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]]

Latest revision as of 09:49, 14 June 2024

A simple IDE to program MicroPython on the board is the Arduino Lab for MicroPython IDE. Alternatives are, Jupyter Notebook or Thonny IDE.

Upgrade the Arduino Firmware

  • Reinstall the MicroPython Firmware (version 1.22.2 tested)
  • 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

Note: Before installing MicroPython ensure you have the latest Arduino Firmware, see Upgrade the Arduino Firmware.

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

  • 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

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

Pinout

How to control the Builtin LED MicroPython

this is GPIO6 (D13 in Arduino) 

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)

Example: Read Accelerometer and Gyro

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)


Example of a WIFI-Access Point and Webserver to control the LED

# 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()
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