| # synthio_portamento_hack.py -- a hacky way to do portamento in synthio | |
| # | |
| import board, time, random | |
| import audiobusio, audiomixer, synthio | |
| import ulab.numpy as np | |
| lck_pin, bck_pin, dat_pin = board.MISO, board.MOSI, board.SCK | |
| audio = audiobusio.I2SOut(bit_clock=bck_pin, word_select=lck_pin, data=dat_pin) | |
| mixer = audiomixer.Mixer(voice_count=1, sample_rate=28000, channel_count=1, |
| # synthio_filter_test.py -- trying out new filter PR, knobs control frequency and resonance | |
| # 5 Jun 2023 - @todbot / Tod Kurt | |
| import time, random, board, analogio, audiopwmio, synthio | |
| audio = audiopwmio.PWMAudioOut(board.GP10) | |
| synth = synthio.Synthesizer(sample_rate=22050) | |
| audio.play(synth) | |
| knob1 = analogio.AnalogIn(board.GP26) | |
| knob2 = analogio.AnalogIn(board.GP27) |
| # synthio_two_knob_drone_synth.py -- Got a Pico and two pots? Now you got a drone synth | |
| # 5 Jun 2023 - @todbot / Tod Kurt | |
| # video demo: https://www.youtube.com/watch?v=KsSRaKjhmHg | |
| import time, random, board, analogio, audiopwmio, synthio | |
| knob1 = analogio.AnalogIn(board.GP26) | |
| knob2 = analogio.AnalogIn(board.GP27) | |
| audio = audiopwmio.PWMAudioOut(board.GP10) | |
| synth = synthio.Synthesizer(sample_rate=22050) |
| # dual_i2s_player.py -- demonstrate using two I2S stereo DACs at once on RP2040 / Raspberry Pi Pico | |
| # 19 May 2023 - @todbot / Tod Kurt | |
| # video of this code: https://www.youtube.com/watch?v=CgqECxhqJEo | |
| import time, board, audiocore, audiobusio | |
| # qtpy rp2040 pins | |
| # in this case, board.* names just match silkscreen, don't indicate functionality | |
| lck1_pin, bck1_pin, dat1_pin = board.MISO, board.MOSI, board.SCK | |
| lck2_pin, bck2_pin, dat2_pin = board.SCL, board.SDA, board.TX |
STATUS
CircuitPython does not support USB Host yet, but the basis API and partial implementation.
The idea is for CircuitPython to rely on TinyUSB, the same way it does for USB Client activities.
Some hardware that run CircuitPython are designed with USB Host in mind such as:
| # SPDX-FileCopyrightText: Copyright (c) 2021 Tim Cocks for Adafruit Industries | |
| # | |
| # SPDX-License-Identifier: MIT | |
| """ | |
| `adafruit_st25dv16` | |
| ================================================================================ | |
| CircuitPython driver for the I2C EEPROM of the Adafruit ST25DV16 Breakout | |
By: Diego Acuña
Original Article: http://www.diegoacuna.me/how-to-run-a-script-as-a-service-in-raspberry-pi-raspbian-jessie/
A pretty common task when using this device, is to run some script (for example a python script) as a service in the operating system so it can start on boot, stop and restart using systemctl and more. In this post I'm going to explain how to set a little script as a service using Raspbian Jessie in a Raspberry Pi.
Installing Python 3.7.4 on Raspbian =================================
As of July 2018, Raspbian does not yet include the latest Python release, Python 3.7.4. This means we will have to build it ourselves, and here is how to do it.
Install the required build-tools (some might already be installed on your system).
| #! /bin/bash -p | |
| IFS= | |
| PATH=/bin:/usr/bin | |
| # ================================================================================ | |
| # MIDI Plugin | |
| # ================================================================================ | |
| /bin/echo "Removing MIDI plug-in /Library/Audio/MIDI Drivers/M-Audio USB Support.plugin." | |
| /bin/rm -rf /Library/Audio/MIDI\ Drivers/M-Audio\ USB\ Support.plugin |