RPi2 about pigpio HOT 5 CLOSED

Yes. pigpio should work on all the current Pis (including the compute module).

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Thanks

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When you say:

Yes. pigpio should work on all the current Pis (including the compute module).

I am just starting to experiment with Pigpio and I am excited by the possibilities that it offers to a 'C' coder (who has virtually no experience of Python 🐍)!

Reading through the man pages first, as a responsible coder does, 👼 : How does the code work when the range of usable GPIO pins on the Compute Module is nearly all the 120-odd total that the BCM2835 has - does the current code detect the platform is a Compute Module and allow all 120 pins to be used but on the other RPi products reject access to pins that are used "internally"?

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I don't know how many pins the compute module has.

It has the same number of GPIO (54) as all the other Pis - however on the compute module you have physical access to all 54 GPIO.

GPIO 0-31 are fully supported by pigpio - sampling at up to 1 MHz, callbacks, PWM generation, waveforms. The other GPIO (32-53) are restricted to the other functions (read/write/set mode/get mode, hardware clock, hardware PWM etc.).

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Ah further checking on the Farnell website here and here reveals that there are definitely 45 free GPIO pins (Of two more, GPIO 46 is HDMI detect and 47 seems to be used to control booting from the on-board Flash and for the "Activity" LED) - I guess that a naked BCM2835 device core may have 120 pins but the remainder are tied up in the HDMI interface, 2x RPi camera interfaces (each with a I2C bus BTW!), 2x RPi display and a composite video (no audio) output.

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