General • RPi SPi Master to Pico SPI Slave DMA

I am attempting to implement an RPI SPI master to Pico slave.
I have a logic analyzer on the SPI signals.
RPi: Uses /dev/spi0.0 MOSI(GP10) MISO(GP9) SCLK(GP11) CE0(GP8) CE1(GP7)
Pico: Uses spi0, SPI0 _RX(GP4) SPI0_CSn(GP5) SPI0_SCK(GP6) SPI0_TX(GP7)

The wiring looks OK. The SPI signals from the RPi are correct. However, there is signal on the Pico SPI0_TX pin.

Is there an example of doing this with DMA?

Tom Dean

Statistics: Posted by tomdean — Wed Mar 27, 2024 2:16 am — Replies 0 — Views 19

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