Since PWM is a little fraught with gotchas, this is mostly a message to future me-
(Note to self, rtfm - https://datasheets.raspberrypi.com/rp1/rp1-peripherals.pdf)
| pin | a0 | a3 |
|---|---|---|
| GPIO19 | PWM0_CHAN3 | |
| GPIO18 | PWM0_CHAN2 |
Philip Howard Gadgetoid
🚼
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| CFLAGS_ALL=-I../libusbgx/build/include -I../bcm2835-1.68/build/include -L../bcm2835-1.68/build/lib -I../lua-5.4.0/src -L../libusbgx/build/lib -L../libserialport/build/lib -L../lua-5.4.0/src -lpng -lz -lpthread -llua -lm -lbcm2835 -ldl | |
| pi400: CFLAGS+=-static $(CFLAGS_ALL) -lusbgx -lconfig -DPI400_USB | |
| pi400: pi400.c gadget-hid.c | |
| $(CC) $^ $(CFLAGS) -o $@ | |
| pi400test: CFLAGS+=-static $(CFLAGS_ALL) -lusbgx -lconfig | |
| pi400test: pi400.c gadget-hid.c | |
| $(CC) $^ $(CFLAGS) -o $@ |
I owe my very rapid learning journey in the world of ConfigFs to several key sources which aren't necessarily relevant to this result, but I feel deserve a mention anyway.
- This really demystified configfs for me, and stopped me being afraid of it: http://events.linuxfoundation.org/sites/events/files/slides/USB%20Gadget%20Configfs%20API_0.pdf
- I borrowed heavily from this Mindstorms EV3 script: https://github.com/ev3dev/ev3-systemd/blob/ev3dev-jessie/scripts/ev3-usb.sh
- Desperately trawled this thread for answers: https://answers.microsoft.com/en-us/windows/forum/windows_10-networking-winpc/windows-10-vs-remote-ndis-ethernet-usbgadget-not/cb30520a-753c-4219-b908-ad3d45590447?auth=1
- This guide is handy: http://irq5.io/2016/12/22/raspberry-pi-zero-as-multiple-usb-gadgets/
Gadgetoid
/ RetroPie-Pico8-Splore.md
Last active
March 10, 2025 13:22
Instructions for integrating Pico8 and Splore into RetroPie
Just install vanilla Raspberry Pi OS for your Pi 5, and install RetroPie using retropie-setup
install lr-retro8 using RetroPie-Setup (easy way to get a Pico-8 menu option we can modify to our own ends)
Download the Rasberry Pi distro of pico8 and copy the unzipped pico-8 dir to /opt/retropie/ports/
maybe sudo chmod -R 755 /opt/retropie/ports/pico-8/
touch ~/RetroPie/roms/pico8/Splore.p8, launching this dummy cart will launch splore. IDK what zzzsplore.p8 is but it doesn't work and looks ugly in the EmulationStation UI.
Gadgetoid
/ unicorn_pack_pio_dma.py
Last active
March 26, 2024 09:49
MicroPython PIO DMA for Pimoroni Unicorn Pack
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| import rp2 | |
| import time | |
| import uctypes | |
| from array import array | |
| from machine import Pin | |
| PIN_LED_DATA = 8 | |
| PIN_LED_CLOCK = 9 | |
| PIN_LED_LATCH = 10 | |
| PIN_LED_BLANK = 11 |
This is a horrible, hacky, proof of concept mess for Pi VU Meter on Volumio It details steps with the old phatmeter library, but should work with PiVuMeter too, simply change "ameter" to "pivumeter" and link the right lib accordingly
REQUIRED: Create /etc/udev/rules.d/60-i2c.rules with the contents:
KEREL=="i2c-1", GROUP="i2C", MODE="0777"
Starting from Jessie or Jessie Lite
curl get.pimoroni.com/phatbeat | bash
Then install VLC:
sudo apt-get install vlc-nox
Gadgetoid
/ 10-twinkie.rules
Created
February 6, 2019 18:59
Script to build Sigrok and PulseView on the Raspberry Pi with Twinkie USB Power-Delivery sniffer support
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| SUBSYSTEMS=="usb", ATTRS{idVendor}=="18d1", ATTRS{idProduct}=="500a", MODE="0660", GROUP="dialout" |
Gadgetoid
/ midi-sequencer.orca
Created
January 21, 2019 21:36
Simple non-regular step chord sequencer in ORCA.
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| ......................................................................... | |
| .U....................................................................... | |
| ....W.U.................................................................. | |
| .S....................................................................... | |
| ......................................................................... | |
| ......................................................................... | |
| ......................................................................... | |
| .....NYNYNYNYNYNYNYNYNYNYNYNYNYNYNYNYNYN11G0............................. | |
| ......Y.Y.Y.Y.Y.Y.Y.Y.Y.Y.Y.Y.Y.Y.Y.Y.Y.01G1............................. | |
| .S.......J...........J...........J...J.J..0....................2V1....... |
Gadgetoid
/ led-matrix-5x5-dimension.svg
Created
January 15, 2019 18:37
svg dimension for the Pimoroni 5x5 LED Matrix Breakout
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