sandeepmistry/arduino-nRF5

programming nRF52840 GPIO voltage

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#362 opened on Jun 8, 2019

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enhancementhelp wanted

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Description

There is support for configuring NRF pins as GPIO. Viz:
NRF_NVMC->CONFIG = (NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos); // enables NRF_UICR->NFCPINS = 0; // 1 NFC pins = NFC 0 = NFC pins as GPIO However it would be nice to support for setting NRF52840 GPIO voltage. Similar to: NRF_UICR->REGOUT0 = UICR_REGOUT0_VOUT_3V3; // arduino-nRF5 gives error as it doesn't recognize REGOUT0.

Contributor guide

Research direction
Look at the nRF52840 datasheet for UICR REGOUT0 register and find the current Arduino core file that handles pin configuration (likely variant.cpp). Add a conditional define or function to set REGOUT0 based on user preference.
Tech stack
c
Domain
embedded iot
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
CArduino
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75