UDP transmitter implemented with PIO and DMA on the RP2040

by vha3 on 5/4/2023, 1:44:21 AM with 21 comments

  • by speed_spread on 5/4/2023, 11:22:58 AM

    All those RP2040 hacks are impressive (HDMI, etc) but also suggest that the RP2040 is just slightly underpowered for many practical applications. I hope some cheap RISC-V MCU unbound by ARM licensing constraints (with Atomic ops+SIMD, unlike Cortex-M0) comes soon.

  • by mschuster91 on 5/4/2023, 10:59:13 AM

    Bit-banging Ethernet, now that is something I'd never thought to see.

  • by detrites on 5/4/2023, 7:42:11 AM

    It appears they've overclocked the RP2040 quite a bit without also increasing voltage. First time seeing that. Eg, slightly higher at 250Mhz some RP2040's have been unstable without it: https://github.com/pimoroni/picosystem/pull/57

  • by bibaheu on 5/4/2023, 8:51:48 AM

    It can probably be a bit simplified by using IPv6, as that avoids the IPv4 checksum.

  • by aappleby on 5/4/2023, 3:51:44 AM

    Rube Goldbergian :D