Minimum GPIOTE "low accuracy" pulse width

[Julie H]

I have a device with a programmable output pulse width for its data ready signal. I need to be able to reliable receive the pulse so I don't miss any interrupts, and I'd like to do that in the minimum possible time so I can send the device a "power down" command as quickly as possible.

I'm seeing interrupt latency as high as 60uS while the nRF52840 is "advertising". Is there any sort of maximum guaranteed latency for GPIOTE pins in "low accuracy" mode?

[Julie H]

Kristin -

Thanks. That's what I'd suspected, but with other development tasks on my plate I'd not gotten around to it.

[koldybin]

Please tell me why the interrupt may not work? If GPIOTE_CONFIG_IN_SENSE_LOTOHI(true) everything works correctly, but the current consumed is 20 microamps more. If GPIOTE_CONFIG_IN_SENSE_LOTOHI(false), then the interrupt does not occur. Increasing the pulse duration to 100 milliseconds did not bring any results. Apart from this, nothing changes in the code. What could be the reason?

Configuration:

• NRF52832
• Softdevice S132
• SDK 17.0.0_9d13099

thanks in advance

[Håkon Alseth]

Hi,

 

You are posting in a very old thread. Could you please create a new ticket on this matter?

 

Kind regards,

Håkon