CircuitPython-playground

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TODO

• Bring the esp32 version of the 5110 program up to date with the Pico version

5110 Display

Python code that should works on different devices. Save the programs under the name code.py to auto run on save

• 5110_ip_address_demo_esp32c3.py lists a machine's address on a 16x2 LCD compressing the ":" characters to ensure it fits after joining to a network
• 5110_ip_address_demo_pico.py lists a machine's address on a 16x2 LCD compressing the ":" characters to ensure it fits

Behavior described at https://joe.blog.freemansoft.com/2023/01/shrinking-ip-address-to-fit-on-pcd8544.html https://github.com/freemansoft/CircuitPython-playground/blob/main/5110_ip_address_demo.py

Accelerometer

lib/adafruit_l3gd20.py is a cloned copy of the official driver and has been updated to recognize the L3G4200D device identifier. It is required in /lib for the MCP demo.

Blinka Setup

Host Python Setup

# setting up windows environment for Blinka
pip3 install hidapi
pip3 install adafruit-blinka

MCP2221

Thse programs are intended to run from Blinka on a PC (Windows or Mac) using an MCP2221 as a prot expander.

Mandatory Configuration Environment configuration that must be done before running host Python python3

• Linux set BLINKA_MCP2221=1
• Powershell $env:BLINKA_MCP2221=1

Run python3 on the PC to bring up the REPL and then paste the the rest of the .py file

mcp2221-usb-enumeration-output.json contains the output from the USB HID library enumeration for the MCP2221. The file only contains the MCP2221 record. Everything else has been removed

Adafruit I2C 16x2 LCD

Assumes

• Code is running on a laptop communicating with the MCP2221 breakout board via CircuitPython and Blinka

Setup

# app specific libraries
pip3 install adafruit-circuitpython-charlcd

Verify env by running or pasting blinka_mcp222_env_check.py Run or open a python3 REPL and paste the contents of mcp2221_lcd16x2.py

L3GD4200D via hacked adafruit_L3GD20I driver

Assumes

• Code is running on a laptop or desktop communicating with the accelerometer via a MCP2221 breakout board.
• Using an L3G4200D or one of the L3GD20 accelerometer on I2C
• Have installed the correct libraries from above

Setup

# app specific libraries
# pip3 install ?? what library is needed

Run or open a python3 REPL and paste the contents of mcp2221_L3GD4200D.py

RP2040 running U2IF - Never got displays to work

I never got any of the displays to work correclty with the u2if firmware

These programs are intended to run from Blinka on a PC (Windows or Mac) using a RP2040 Pico as a port expander. The RP2040 should be running u2if firmware.

Thse programs are intended to run from Blinka on a PC (Windows or Mac)

Mandatory Configuration Environment configuration that must be done before running host Python python3

• Linux set BLINKA_U2IF=1
• Powershell $env:BLINKA_U2IF=1

Run python3 on the PC to bring up the REPL and then paste the the rest of the .py file

SPI OLED

Verify the environment by running or pasting blinka_u2if_env_check.py

BROKEN: Does not display correctly I think it is because of the way the Adafruit redirects the REPL

Setup

# app specific libraries
pip3 install adafruit-blinka-displayio

#pip3 install adafruit-circuitpython-terminalio
pip3 install adafruit-circuitpython-displayio-sh1106
pip3 install adafruit-circuitpython-display-text

Noki1 5110 PCD8544

Verify the environment by running or pasting blinka_u2if_env_check.py

BROKEN: Displays nothing

See the setup instructions in the pico demo file