Hifive 1 Rev B interfacing with ESP32-SOLO-1

HiFive1 Rev B
17

Hi,

According to the schematics, Handshake pin is GPIO 10 and Chip Select is GPIO 9.

I managed to talk to the ESP32-SOLO1 module via SPI1, by enabling CSMODE=CS_AUTO and CSID=2 to get the chip-select pin automatically toggled high / low.

See this post: SPI Hifive 1 Rev B
… and complete code here: https://github.com/kjarvel/hifive1revb_wifi

Feel free to use, I hope you find this useful!