pigpio is a C library for the Raspberry which allows control of the
General Purpose Input Outputs (GPIO).
-**At the moment pigpio on the Pi4B is experimental. I am not sure if the DMA channels
- being used are safe. The Pi4B defaults are primary channel 7, secondary channel 6.
- If these channels do not work you will have to experiment. You can set the channels
- used by the pigpio daemon by invoking it with the -d and -e options, e.g.
- <small>sudo pigpiod -d 5 -e 8</small> to specify primary 5, secondary 8.**
-
## Features
* Sampling and time-stamping of GPIO 0-31 between 100,000 and 1,000,000 times per second