sandeepmistry / pico-rmii-ethernet

BSD 3-Clause "New" or "Revised" License
212 stars 29 forks source link

pico-rmii-ethernet

Enable Ethernet connectivity on your Raspberry Pi Pico with an RMII based Ethernet PHY module.

Leverages the Raspberry Pi RP2040 MCU's PIO, DMA, and dual core capabilities to create a Ethernet MAC stack in software!

Hardware

Wiring

RMII Module Raspberry Pi Pico Library Default
TX1 TX0 + 1 11
TX-EN TX0 + 2 12
TX0 any GPIO 10
RX0 any GPIO 6
RX1 RX0 + 1 7
nINT / RETCLK 20 or 22 20
CRS RX0 + 2 8
MDIO any GPIO 14
MDC MDIO + 1 15
VCC 3V3
GND GND

Examples

See examples folder. LWIP is included as the TCP/IP stack.

Current Limitations