GPS-22693 (ZED-F9R) Hookup Guide Rx/Tx Reversed?

[PaulZC]

Hi,

Just adding a link to this issue:

SPI on ZED-F9R

Hi Brent (@brenton.dickinson ), Thanks for the update. Glad you got it working. It looks like we introduced some badness when we migrated from the old MISO / MOSI labelling to the new PICO / POCI labelling on the ZED-F9R boards. In summary: ZED pin 42 was previously correctly labelled TX / MISO ZED pin 43 was previously correctly labelled RX / MOSI The new labelling should be: ZED pin 42 : TX / POCI (a.k.a. SPI_SDO / TXO (TX Out) / TX1 (TX UART1)) ZED pin 43 : RX / PICO (a.k.a. SPI_SDI / RXI (RX In) / RX1 (RX UART1)) But I see that the updated ZED-F9R silk and schematic use: TXO / PICO, and RXI / POCI. The TXO and RXI are correct. But the PICO and POCI are reversed… Sorry about that. I’ll pass the message on. Best wishes, Paul

The hookup guide was actually correct:

Pin 42 is always an output (TX / MISO / CIPO / POCI)
Pin 43 is always an input (RX / MOSI / COPI / PICO)

Unfortunately an error was introduced when we changed from the old MISO / MOSI labels to the new POCI / PICO.

I hope this helps,
Paul