nRF52832 and nRF52840 GPIO questions

RE: nRF52832 and nRF52840 GPIO questions

Einar Thorsrud — Tue, 17 Nov 2020 08:20:19 GMT

I see. I have not been able to refresh registers like that, unfortunately. You could ask in the SEGGER forum if you really need this, though.

RE: nRF52832 and nRF52840 GPIO questions

samsam — Mon, 16 Nov 2020 14:36:39 GMT

I don't pretend to be "live" but somehow without to leave the break point. There is some "Refresh" button on top of the Register view window, but I don't see it working at all :(

Regards

RE: nRF52832 and nRF52840 GPIO questions

Einar Thorsrud — Mon, 16 Nov 2020 14:03:59 GMT

Hi,

I see. With SES, the registers are not updated "live", but it will be updated for instance when hitting a breakpoint. So when the breakpoint is hit, whatever is reflected in the register view was the state tat that time, like a snapshot. I am not aware of any way to get "live updates" on register changes in SES, unfortunately.

RE: nRF52832 and nRF52840 GPIO questions

samsam — Mon, 16 Nov 2020 13:32:48 GMT

Problem with debug window for input (IN) registers P0 or P1 is that they are not updated while I am at a debug break point. Let say I'm debugging code and hit a break point and if I for example press a button I don't see the change in the IN register. I have used to work with other IDEs for other microcontrollers and change in IOs can be seen right away even while I'm stopped at a debug break point.

In SES the only way to see the change for a button press for example is to press and hold the button and step away from the break point with STEP IN, STEP OUT, GO etc debug stepping command.

So the question is if there is a better way to see a change of an input while sitting/stopped at a breakpoint without step further in the code?

RE: nRF52832 and nRF52840 GPIO questions

Einar Thorsrud — Mon, 16 Nov 2020 12:40:35 GMT

Hi,

[quote user="samsam"]Thanks - is there any of other pins that need such special way to make them GPIOs? [/quote]

Not in the same way, but there are some other GPIO's that need special attention. You can see all details under pin assignments.

[quote user="samsam"]Any help on Segger ES for IN register?[/quote]

Can you elaborate on the problem?

RE: nRF52832 and nRF52840 GPIO questions

samsam — Mon, 16 Nov 2020 12:26:44 GMT

Hi,

Thanks - is there any of other pins that need such special way to make them GPIOs?

Any help on Segger ES for IN register?

RE: nRF52832 and nRF52840 GPIO questions

Einar Thorsrud — Mon, 16 Nov 2020 08:30:28 GMT

Hi,

The NFC pins (P0.09 and P0.10) are configured as NFC pins by default. You can make them GPIO's by defining CONFIG_NFCT_PINS_AS_GPIOS for your project, as described here.