Reset Pin as GPIO

Question

I am working on a custom nRF552832 board. I need to use the reset pin (p0.21) as GPIO input. 
 I am using the NRFConnect plugin on VSCode to develop and program the board. 
 The issue i am having is that the reset pin is refusing to be disabled so i can use it as GPIO. 
 In my custom board defconfig i have CONFIG_GPIO_AS_PINRESET =n and when I build the project the .config file has CONFIG_GPIO_AS_PINRESET commented out. 
 However when i flash the board my VSCode terminal says "Enabling pin reset" and "Applying pin reset". 
 
 I am not sure how to get around this any advice is welcome.

Glen M · Accepted Answer

Ah - I found a better solution here: https://nrfconnect.github.io/vscode-nrf-connect/guides/build_bind_tasks.html 
 About halfway down the page it talks about adding a " softreset" option to the build. It says to add it to your settings.json, but the thing I clicked on when I found this info (somewhere in the VSCode settings) opened up my local project .code-workspace file. Maybe that becomes the settings.json file when you've saved off your workspace as a file like I do. 
 
 Anyway, there was a part of the file that looked like this: 
 "settings" : {

"nrf-connect.applications" : [

I stuck the code in to turn on soft reset between those two lines as follows:

"settings" : { 
 "nrf-connect.applicationOptions" : { 
 "${workspaceFolder}" : { 
 "flash" : { 
 "softreset" : true , 
 } 
 } 
 }, 
 "nrf-connect.applications" : [

Glen M · Answer

Hi Michael - I've been having this same problem with my nRF52840 on its reset pin (0.18). I just found an older ticket that helped me - apparently the tool that VSCode uses when programming (west flash or whatever) ends up turning it back on. 
 
 I found that if I use JFlash for programming in the merged.hex file from my \build\zephyr directory that suddenly my pin works. 
 It's not a great solution, but at least I know my board isn't broken and I can move on. Hope that helps! 
 
 Here's the thread I found: 
 devzone.nordicsemi.com/.../

Reset Pin as GPIO

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