adafruit / adafruit/Adafruit_nRF52_Arduino
[Bug] SPIM3 could conflict with Softdevice/IRQ and cause hardfault
- Dominant language
- C
- Stars
- 699
- Forks
- 570
- PR merge metrics
- No merged PRs in 30d
Description
We didn't run into this issue just yet, but it is only a matter of time.
due to errata 198 https://infocenter.nordicsemi.com/topic/errata_nRF52840_Rev2/ERR/nRF52840/Rev2/latest/anomaly_840_198.html
Solution: allocated a fixed separated RAM block just for SPIM3 to use
related to https://github.com/adafruit/circuitpython/issues/1222#issuecomment-545200965
Contributor guide
No contributing guide indexed for this repository
Research direction
No files or tests are named. Start by reading nRF52840 errata 198 and the related CircuitPython discussion, then trace how SPIM3, the Softdevice, IRQ handling, and RAM allocation interact. Done means SPIM3 has a fixed separated RAM block and the reported conflict and hardfault risk are addressed.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- arduino, c
- Domain
- embedded-iot
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100