| # 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 | |
| # Use systemd for managing NVIDIA driver suspend in drivers ====>>> PRIOR to version 470 <<<===== | |
| # https://download.nvidia.com/XFree86/Linux-x86_64/450.66/README/powermanagement.html | |
| # https://forums.developer.nvidia.com/t/unable-to-set-nvidia-kernel-module-parameters/161306 | |
| # Please note: In Fedora Linux you may need to just install the xorg-x11-drv-nvidia-power pakage | |
| # as sugested by @goombah88 in the comments below. | |
| TMP_PATH=/var/tmp | |
| TMPL_PATH=/usr/share/doc/nvidia-driver-460/ | |
| echo "options nvidia NVreg_PreserveVideoMemoryAllocations=1 NVreg_TemporaryFilePath=${TMP_PATH}" | sudo tee /etc/modprobe.d/nvidia-power-management.conf |
This is the short guide about how to recompile/enable --enable-ssl option in a Squid caching proxy server. The --enable-ssl option turned off by default, to be able to use SslBump feature we have to turn it on. To my own surprise Squid was compiled not only without --enable-ssl flag, but also with GnuTLS due to GPL legal reasons.
Optionally enable:
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.
