First look at the Portenta H7

RE: First look at the Portenta H7

Workshopshed — Wed, 14 Jul 2021 07:21:50 GMT

A shared memory example

https://github.com/MatInGit/PortentaRPCMemory/tree/b21935fddbb6c1b4e27aa6ae8b63f6b1d948a483

Uses "readytoread" and "markAsReady" functions to control access

RE: First look at the Portenta H7

BigG — Sun, 11 Jul 2021 15:05:52 GMT

There is a claim that these can talk via RPC but I've not tracked down the documentation for that yet.

I had spotted a fair bit of chatter about RPC on this forum post: https://forum.arduino.cc/t/passing-variable-from-cm7-to-cm4-using-rpc/692026

There's also been some chat on the MBED forum. Here's a few extracts:

- there's a suggestion to use this: https://github.com/EmbeddedRPC/erpc/wiki#why-use-nxp-erpc-for-multicore-systems

- a port of the NXP option for mbed: https://github.com/EmbeddedRPC/erpc

- and here's a basic dual core Arduino example on github:https://github.com/hpssjellis/my-examples-for-the-arduino-portentaH7/blob/master/my02c-dual-core-RPC-variable.ino

RE: First look at the Portenta H7

Jan Cumps — Sun, 11 Jul 2021 13:40:26 GMT

I've been looking into 2-core controllers too lately.

In the past I've worked with communication ICs, where the second core was more-or-less dedicated to the radio function.

And with the TI Hercules. There, the 2nd core is not available for processing. It is used to validate that core 1 performed operations without glitches.

The PSoC 6 is the first time that I've been diving into a controller with two free cores, and integration/interaction between them.

A really interesting subject.

RE: First look at the Portenta H7

Sean_Miller — Sun, 11 Jul 2021 12:45:33 GMT

Thanks for the write up!!! It will be interesting to see how it benchmarks for AI.