Which GPIOTE channels are used in s140?

[irarykim]

Hi, 

I am using s140 v7.0.1 for nRF52840.

I found if I configure NRF_GPIOTE->CONFIG[0], then BLE will not work.

Which GPIOTE channels are used in s140?

Thank you.

[Jørgen Holmefjord]

Hi,

The softdevice does not use any GPIOTE channels.

• What are the symptoms of "BLE not working"?
• Did you make any other changes at the same time that could have caused this?
• What is the exact code you added that caused the issue?

Best regards,
Jørgen

[irarykim]

I am using NUS in my firmware.

When the code that writes value to NRF_GPIOTE->CONFIG[0] is used, I can use nRF UART for Android app to pair with my board, also I can send from app to my board, but my board doesn't send bytes to app when it is trying.

If this NRF_GPIOTE->CONFIG[0] code is commented, BLE Tx works fine.

I am home now, so I cannot remember clearly, but the code is similar to following code block, I referred it from here.

NRF_GPIOTE->CONFIG[0] = GPIOTE_CONFIG_MODE_Task << GPIOTE_CONFIG_MODE_Pos | 

GPIOTE_CONFIG_POLARITY_Toggle << GPIOTE_CONFIG_POLARITY_Pos |
pinselect << GPIOTE_CONFIG_PSEL_Pos |
GPIOTE_CONFIG_OUTINIT_High << GPIOTE_CONFIG_OUTINIT_Pos;

I found "allocating the channels 0-2 for pwm and 3 for PA/LNA in BLE radio" in this link, so I guessed softdevice uses GPIOTE channel 0-3, maybe I misunderstood the context.

In the coming Monday, I should check the error returned from ble_nus_string_send().

If you have any suggestion, please tell me.

Thank you.