Question : ESP32 C3mini supported ?

[Noschvie]

Hello
want to use an ESP32C3mini with this M-Bus Click board connected to GPIO20/RX and GPIO21/TX. Is this hardware supported ?
Thanks, Norbert

[gskjold]

Hi, Only reason there is no C3 build yet is because I don't own a C3 device to test with. Here is a build for you can try:
esp32c3.zip

[Noschvie]

Hello
flashed (under Windows) the C3mini, logs below, but there is no AP coming up. Currently I dn't have anohter device available...

...\AMS-MQTT>..\esptool-v4.4-win64\esptool.exe --chip esp32c3 --port COM7 --baud 460800 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 bootloader_qio_40m.bin 0x8000 partitions.bin 0xe000 boot_app0.bin 0x10000 firmware.bin
esptool.py v4.4
Serial port COM7
Connecting...
Chip is ESP32-C3 (revision v0.3)
Features: WiFi, BLE
Crystal is 40MHz
MAC: a0:76:4e:1c:03:a4
Uploading stub...
Running stub...
Stub running...
Changing baud rate to 460800
Changed.
Configuring flash size...
Auto-detected Flash size: 4MB
Flash will be erased from 0x00001000 to 0x00004fff...
Flash will be erased from 0x00008000 to 0x00008fff...
Flash will be erased from 0x0000e000 to 0x0000ffff...
Flash will be erased from 0x00010000 to 0x0015bfff...
Compressed 12528 bytes to 9001...
Wrote 12528 bytes (9001 compressed) at 0x00001000 in 0.2 seconds (effective 477.3 kbit/s)...
Hash of data verified.
Compressed 3072 bytes to 128...
Wrote 3072 bytes (128 compressed) at 0x00008000 in 0.1 seconds (effective 490.9 kbit/s)...
Hash of data verified.
Compressed 8192 bytes to 47...
Wrote 8192 bytes (47 compressed) at 0x0000e000 in 0.1 seconds (effective 652.7 kbit/s)...
Hash of data verified.
Compressed 1357680 bytes to 749759...
Wrote 1357680 bytes (749759 compressed) at 0x00010000 in 11.7 seconds (effective 924.5 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...

[gskjold]

I see I forgot to follow up on this one, sorry about that. It probably loops on some error, maybe serial debugging would reveal what it is.

In any case, I have ordered some C3 and S3 boards to test with, so that I can add support for both of them.

[dbeinder]

I built the current master for C3 and it worked right away, I just had to add a new board type: #460