Please update this port of TensorFlow Lite Micro library changes from latest upstream LiteRT for Microcontrollers?

[Hedda]

Please consider updating this pico-tflmicro port of TensorFlow Lite Micro library with all the latest changes from upstream TensorFlow Lite (LiteRT) to enable better suppport for RP2040 and RP2350 microcontrollers from Raspberry Pi, ok?

• https://github.com/tensorflow/tflite-micro

• https://ai.google.dev/edge/litert/microcontrollers/overview

RP2040 support for TensorFlow Lite Micro was announced on the blog in January of 2024 but then no updates since March:

• https://www.raspberrypi.com/news/a-big-bang-update-for-tensorflow-lite-for-microcontrollers/

Would also really like to see native support for the new RP2350 SoC/MCU with both Cortex-M and/or RISC-V cores in it:

• RP2350 support #18

PS: Would in addition be awesome to see a demo on microWakeWord running natively on both RP2350 or RP2040 platforms:

• Demo microWakeWord running natively on RP2350 or RP2040 microcontroller platforms? #21

[aallan]

@aallan @petewarden Please update this port of TensorFlow Lite Micro library changes from latest upstream TensorFlow Lite (LiteRT) for Microcontrollers?

Just to manage expectations, I don't work for Raspberry Pi anymore, and @petewarden was supporting this port on a very much "best efforts" basis.

[Hedda]

Any chance @lurch @kilograham @peterharperuk @Wren6991 @will-v-pi could run it up the flagpole to the Raspberry Pi team?

[JamesH65]

The team will already have seen this I believe. They are all very busy though and may not be able to spend much time on it.

[Hedda]

FYI; @sean-lawless did submit a pull request a few weeks ago which @lurch made some comments on but it is not merged yet:

• Updated CMake for latest Pico-SDK, including Pico2 support (issue #18) #19

[JamesH65]

@Hedda Have you tested Sean's PR to see if it works and gets you want you need?

[petewarden]

I've now updated this port to the latest TFLM upstream, and confirmed it works on the RP2350. See dfea53b