C6657 GPIO16-31 interrupt

Ganz

Intellectual 770 points

Hi,

I am trying to GPIO16 as interrupt source.

1. unlock KICK

2. Enable GPIO16 pin from PIN_CONTROL_0

3* Config GPIO16 as input

4. Enable GPIO global interrupt ( BINTEN)

5*. Enable GPIO16 rising edge interrupt

6. Config and enable CIC0 GPINT16 (Event# 0) interrupt.

*The GPIO user guide SPRUGV1 documents GPIO 0-15 only. I just assume GPIO16 is using bit16 of the same register set for GPIO0-15.

By reading IN_DATA bit16 I confirms that GPIO16 is switching. But for some reason the interrupt is not firing.

Interrupt for GPIO0-15 is working. GPINT16 is working by manully setting CIC0 GPINT16 bit.

What could be missing for setting up the GPIO16 interrupt?

GanZ

over 10 years ago

0 Steven Ji over 10 years ago

TI__Genius 12065 points

GanZ,

GPIO user guide needs to be updated for BINTEN register that bit 0 is for Bank 0 (GPIO pins 15:0) and bit 1 is for Bank 1 (GPIO pins 31-16).

So you need to set bit 1 to 1 in BINTEN to enable the interrupt of GPIO pins 31-16.

GPIO_BITEN = 0x2 ;

Please take a look at the following thread which discussed the similar topic. We are trying to update the GPIO user guide to address this as well. Thanks.

http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/p/272135/956887.aspx#956887

0 Ganz over 10 years ago in reply to Steven Ji

Intellectual 770 points

Steven,

By setting bit 1 to 1 in BINTEN, the interrupt is working. Thanks for your help.

GanZ.

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C6657 GPIO16-31 interrupt