IWR6843: Question on GPIO interrupt

Chris Meng

Part Number: IWR6843

Tool/software:

Hi,

In SDK 3.6, customer found below code at ti\drivers\gpio\include\reg_gio.h

/**
* @brief
* Only Ports A, B are capable of interrupts.
* This is a system limit on the GPIO IP Block
* for the devices supported so far.
*/
#define GPIO_MAX_INTERRUPT_PORT 2U

But in TRM, I only found there are 3 interrupts of GPIO. And there are 4 group of GPIO (A/B/C/D) which can enable for interrupts.

VIM Interrupt Sources

Default VIM
Interrupt
Channel

MSS_GIO GPIO_0_host_interrupt

MSS_GIO GPIO_1_host_interrupt

MSS_GIO GPIO_2_host_interrupt

The GPIO interrupt information are not matched. Would you pls help to check what I missed?

Thanks,

Chris

over 1 year ago

0 Santosh Krishnan over 1 year ago

TI__Mastermind 19620 points

Hello Chris.

I think this is is saying you can have up to 2 interrupts, but they can be form any of these GPIO interrupt sources. Is the customer trying to use more than 2 GPIO interrupts?

Sincerely,

Santosh

0 Chris Meng over 1 year ago in reply to Santosh Krishnan

TI__Mastermind 37786 points

Santosh,

The driver code shows there are two gpio ports interrupt and each port supports 8 GPIOs.

Customer wants to know which docs explains this. I checked the TRM, but the info are not matched.

Would you pls help to check again?

Thanks,

Chris

0 Blake Kisshauer over 1 year ago in reply to Chris Meng

TI__Expert 4360 points

Hi Chris,

I'm currently reviewing this internally. I'll respond on Thursday.

Thanks for your patience.

Blake

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IWR6843: Question on GPIO interrupt