mirror of
https://github.com/RIOT-OS/RIOT.git
synced 2024-12-29 04:50:03 +01:00
19 lines
801 B
Markdown
19 lines
801 B
Markdown
|
Program the reset pin for nRF52x CPUs
|
||
|
|
=====================================
|
||
|
|
|
||
|
|
Simply compile, flash, and run this tool on your nRF52x-based board. It will
|
||
|
|
program the given `RESET_PIN` into the NRF_UICR->PSELRESET registers, hence
|
||
|
|
allowing for hardware resets using a button connected to that pin.
|
||
|
|
|
||
|
|
|
||
|
|
Context
|
||
|
|
=======
|
||
|
|
For nRF52x CPUs, the reset pin is programmable. The reset pin configuration is
|
||
|
|
store in two persistent registers, that are programmed in the same way as the
|
||
|
|
CPUs flash memory.
|
||
|
|
|
||
|
|
In most cases, these values should be readily programmed when you get your
|
||
|
|
board, and thus do not need to be touched. However, we have seen however a
|
||
|
|
number of nrf52xxxdk boards, where this was not the case and the on-board reset
|
||
|
|
button did have no effect. Running this tool on those boards solves the issue.
|