RE: GIO Interrupt on both edges

Saurav Agarwala42

Other Parts Discussed in Thread: TMS570LS0714Hello Sunil/Chuck/Christian

I still cannot understand how to get interrupts for both edges on a GIO Interrupt pin. As per my knowledge:

POL (offset 0x000C) sets whether the interrupt is rising or trailing edged. ( values are 0 and 1 )
Can you explain me more in details how can I configure both edges based on INTDET register (offset 0x8)

Regards
Saurav

over 9 years ago

0 Anthony F. Seely over 9 years ago

TI__Guru 68920 points

FYI - I split the thread, so we can track the response better. If you add a question to a thread that's been answered already it is easy to miss. Best to start a new thread, and then you can reference the old one by pasting in the hyperlink like this: e2e.ti.com/.../1951561

There are 2 bits involved, one in INTDET and one in INDPOL for each pin.

Truth Table is like this:

INTDET INTPOL
0 0 -- Falling
0 1 -- Rising
1 x -- Both

It's documented in the TRM, if you read the register description for both the GIOINTDET and GIOINTPOL registers.

0 Saurav Agarwala42 over 9 years ago in reply to Anthony F. Seely

Prodigy 40 points

Hello Anthony

Sorry for bugging you again. But I am using a hercules_tms570ls0714. Is there a specific doc I can refer to for the data register explanations? I tried searching but could not find any. You are referring to TRM. What is TRM?

Regards
Saurav

0 Anthony F. Seely over 9 years ago in reply to Saurav Agarwala42

TI__Guru 68920 points

It is the technical reference manual, see below.

Arm-based microcontrollers

Arm-based microcontrollers forum

RE: GIO Interrupt on both edges