ALRT Pin number? about ads1x15 HOT 2 CLOSED

@kritch83
Good question.
The library has no way to set an interrupt handler for the ALERT/RDY pin.
One has to program the interrupt handler outside the library.

A simple example how the interrupts can be handled => ADS_continuous_4_channel.ino
The ALERT pin is connected to pin2 which is a hardware interrupt on the Arduino UNO and if triggered it sets the RDY flag which is checked and handled somewhere in handleConversion which is called pretty often.

The flag RDY should have been guarded with nointerrupts() interrupt()
but as the ISR just sets a one byte flag it works well without guards.

Problem with interrupts in libraries is that I did not find a way to implement them in a clean, understandable and portable way.

Does this answer your question ?

from ads1x15.

Yes that does. IDK how I missed that example. Thought I looked thru them all. Thank you!

from ads1x15.