Raspberry Python Libraries

Question

I am currently working with a Raspberry Pi (Model B+) and have some experience with Arduino (and it's derivates).

Now, there are three Libs for GPIO access with Python for the Pi:

• WiringPi (WiringPi2)
• RPi.GPIO
• RPIO

What are the advantages/disatvantages of each, since I cannot find a comprehensive list.

RPIO (latest update to version 0.10.1 2 years ago according to github) is said to replace RPi.GPIO which is somehow still maintained (latest update to version 0.5.9 2015年01月04日). Furthermore, the latest update to WiringPi2 on github is 7 months ago.

More specifically, the RPIO is said to provide better PWM results (among other things, I'm gonna control a servo) than RPi.GPIO which did a good job so far.

I'd like to work with just one Python GPIO lib.

UPDATE:

I now migrated my whole code to work with the pigpio framework which works like a charme.

• thekiwi5000: It looks like the most used is RPi.GPIO. import RPi.GPIO as GPIO For further instrutions, see RPi.GPIO Wiki
• Ghanima: related: raspberrypi.stackexchange.com/a/85798/19949

Answer 1

I tried RPi.GPIO for a PWM LED strip and found I could not get a stable refresh. You might not notice it so much with a servo but it was very evident with the LEDs. I resigned myself to using hardware for PWM on RPi.

• RichyGuitar: With RPi.GPIO, LEDs can be dimmed, but the servo was stuttering so I use RPIO for that (RPIO uses DMA to create a nice PWM-signal/square-wave). Currenty working with RPi.GPIO for "regular" GPIO access and RPIO for PWM, since migration isn't complete yet.