Re-work hints for QSPI flash on PCA10056

[Julie H]

The design I'm working on will tentatively use "Original SPI" (like "Original Coke" ...), so I started cutting up the QSPI bridges to disconnect DIO2 and DIO3 (which are also other things ...) prior to pulling them up to Vcc.

Has anyone else done this? I'm comfy working under a microscope, but I'm an old geezer fart and I'm always looking for huge pads and buttons and knobs and dials I can use.

[ovrebekk]

Hi Julie

There are several standard SPI interfaces in the nRF51840, both master and slave, so you shouldn't need to repurpose the QSPI interface for this.

If you just need standard SPI I would simply use the SPIM0 or SPIM1 interface instead ;)

Best regards
Torbjørn

[Julie H]

Yup. That part has the same electrical and programming interface as a part we were using earlier. DIO0 and DIO1 are MOSI and MISO (I forget which is which, because I've not had coffee yet), and DIO2 and DIO3 also serve as !WP and !HOLD in some un-caffeinated order. I've not modified the code that checks the manufacturing ID and size yet on account of I've been busy with something else.