Looks so good.

https://www.cnx-software.com/2023/01/06 ... ontroller/

With 3rd 40 MHz RISC-V LP Core
No wireless. With Ethernet.

Burtrum

How about next 'module' ?

A built-in 32KHz crystal.
I don't want to design a board to experiment with RTC options.

Burtrum

https://www.edx.org/
LFD112x: Building Applications with RISC-V and FreeRTOS.
https://learning.edx.org/course/course- ... T2022/home

The first chapters are very high level, nothing new to me.
But the rest was interesting.

YMMV,
Burtrum

Hi I’ve just started looking at the exact opposite problem: the same app on ESP32 variants. I have ESP32, ESP32C3 and ESP32S2. I think this is the Espressif example to look it. https://github.com/espressif/esp-idf/tree/master/examples/build_system/cmake/multi_config Separate build directories hold s...

FYI Same SHA-256 boot warning on Lilygo TTGO T-01 esp32c3.

This was with Nuttx and ESP boot binaries. Not Arduino. All with the latest tools.

Multiple flase erase and reprogram no change. But seems to boot OK.

Burtrum

Great job from low code to high level programming. Plus HW PCB. I am impressed.

Burtrum
github.com/burtrum

I used 'curl' (incorrectly to download the bin files and ended up with 150K worth the http and other text.
I just used 'wget' and everything flashed OK.

So apparently making progress with Nuttx, so far I like it.

sorry for the false alarm.

Burtrum

I have installed the latest Nuttx with Espressif ESP32 Xtensa and RISCV support under Linux. I get the same failure for the esp32, esp32s2, esp32c3. I'm using pre-built binaries. And the correct toolchains. I try to flash with boot and partition binaries: $ make flash ESPTOOL_BINDIR=../esp-bins Give...

This single script installs ALL of the tools needed to go from "plug in the USB cable to flash the ESP32 board" in under 10 minutes. The detailed README.md demonstrates step-by-step Zephyr workflow from configure and compile to flash and monitor. git clone https://github.com/Burtrum/scripts-zephyr I...

Correction:
i2c_param_config()

Burtrum