CC2640R2F: CC2640R2F Interrupt

Manjula selvaraj

Prodigy 20 points

Part Number: CC2640R2F

In CC2640R2F , Negative edge interrupt is working with the setup

user_pin | PIN_INPUT_EN | PIN_PULLUP | PIN_IRQ_NEGEDGE | PIN_HYSTERESIS,

But the Positive Edge Interrupt is not working .

user_pin | PIN_INPUT_EN | PIN_PULLDOWN | PIN_IRQ_POSEDGE | PIN_HYSTERESIS,

Please suggest

over 2 years ago

0 Clément over 2 years ago

TI__Guru** 101570 points

Hi,

Thank you for reaching out.

Assuming you are not changing your hardware design between the two tests, may I kindly ask why the pull (pull-up/pull-down) is changed?

I would have expect the same kind of pull to be used in both cases, and would have try the following for the positive edge:

 user_pin | PIN_INPUT_EN | PIN_PULLUP | PIN_IRQ_POSEDGE | PIN_HYSTERESIS,

I hope this will help,

Best regards,

0 Manjula selvaraj over 2 years ago in reply to Clément

Prodigy 20 points

Hi Clement

Thanks for the reply.

Actually i want to design Positive Edge Interrupt only .

since it is not working , I checked with Negative Edge Interrupt with Pullup (working fine)

user_pin | PIN_INPUT_EN | PIN_PULLUP | PIN_IRQ_POSEDGE | PIN_HYSTERESIS, this setting is not working

Please suggest other solution

0 Manjula selvaraj over 2 years ago in reply to Clément

Prodigy 20 points

Hi Clement ,

Iam changing the Hardware for PULLUP / PULLDOWN INTERRUPT TEST

0 Clément over 2 years ago in reply to Manjula selvaraj

TI__Guru** 101570 points

Hi,

Ok, please ensure you use the proper pull - otherwise the pin will not be able to reach the expected logical levels.

In addition, I don't think you should enable the hysteresis. Here is a second suggestion:

 user_pin | PIN_INPUT_EN | PIN_PULLUP | PIN_IRQ_POSEDGE,

Regards,

0 Manjula selvaraj over 2 years ago in reply to Clément

Prodigy 20 points

Hi Clement,

Again Thanks a lot.

Still not working without hysteresis too

Please suggest other solution

+1 Clément over 2 years ago in reply to Manjula selvaraj

TI__Guru** 101570 points

Hi,

Can you please provide a simplified hardware schematic of your system showing the way the pin is being used?

Also, can you confirm you tested the last suggestion both with a pull-up and a pull-down?

Best regards,

+1 Manjula selvaraj over 2 years ago in reply to Clément

Prodigy 20 points

Thanks Clement

Without hysteresis, Pull-down interrupt is working

user_pin | PIN_GPIO_OUTPUT_DIS | PIN_INPUT_EN | PIN_PULLDOWN ,

0 Manjula selvaraj over 2 years ago in reply to Clément

Prodigy 20 points

Hi Clement ,

Interrupt is occuring only once , after that Interrupt is not getting triggered

0 Clément over 2 years ago in reply to Manjula selvaraj

TI__Guru** 101570 points

Hi,

I see you have posted the same question here: https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1335737/cc2640r2f-bluetooth-forum

I'll answer on your new thread.

Best regards,

0 Manjula selvaraj over 2 years ago in reply to Clément

Prodigy 20 points

Hi Clement ,

I thought this thread has been closed .

Thank you

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CC2640R2F: CC2640R2F Interrupt