fix: correct IOQSPI SS control mask handling on RP2040#5264
Merged
deadprogram merged 1 commit intotinygo-org:devfrom Mar 27, 2026
Merged
fix: correct IOQSPI SS control mask handling on RP2040#5264deadprogram merged 1 commit intotinygo-org:devfrom
deadprogram merged 1 commit intotinygo-org:devfrom
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Thanks for the fix @rdon-key now merging. |
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Fix a bug where logical NOT (!) was used instead of bitwise NOT (~) when clearing the OUTOVER field in the GPIO_QSPI_SS_CTRL register.
As per the RP2040 datasheet, this register contains multiple control fields (such as OEOVER, INOVER, and IRQOVER). Using !mask evaluates to 0 or 1, which causes the entire register to be corrupted instead of just the targeted bits.
While the current behavior might appear to work by coincidence (if other fields are intended to be 0), this fix ensures proper bitwise manipulation and prevents potential side effects.
Reference: RP2040 Datasheet
https://datasheets.raspberrypi.com/rp2040/rp2040-datasheet.pdf