MichaelDvP
commented
1 year ago - Binaries are only provided for ESP32 soc.
- Sourcecode is compatible with ESP32, ESP32S2, ESP32C3 and with a few lines addition ESP32S3,
- Flash minimum is 4M, more is supported
- Ethernet is only supported on ESP32 SOC.
- RAM on ESP32S2 is to low, only boards with extra PSRAM are working, maybe with some issues.
- PSRAM is supported for all SOCs.
- ESP32C3 codesize for RISC-V is a bit bigger, in future there is asymetric partitioning with loader/application needed. There is a test version.
- ESP32C2 is not supported and not planed. RAM is much to low.
- ESP32C6, not much known today, maybe in future.
- first USB flashing on S2, C3 works from platformio and esptool.exe, Esptool.py seems to have some isues with these socs, i did not get it working. Updating via web interface works.
- For operation only 2 pins for uart rx/tx are needed and can be mapped to (nearly) any pin, so most boards should work. Additional pins for LED, Dallas, Analog can also be mapped.
Tested boards as plugin in a premium gateway (esp8266 only with v2 software, others with v3.5.0b):
ESP32 have a large user base running on may systems. For C3, S2, S3 there is only a single test on one system, maybe with lots of unknown issues. Best choose is a ESP32 dualcore with more than 4M Flash and maybe some PSRAM.
Can you confirm which ESP32 boards are compatible with the project? They differ in SoC, RAM size, interfaces, etc.
https://www.espressif.com/en/products/devkits