ESP32-C6-DevKitC-1

The IoT-LAB testbed provides access to the Espressif development boards.

ESP32-C6-DevKitC-1 is an entry-level development board based on ESP32-C6-WROOM-1(U), a general-purpose module with a 8 MB SPI flash. This board integrates complete Wi-Fi, Bluetooth LE, Zigbee, and Thread functions.

Datasheet and documentation

You can find a lot of documentation on the Espressif website.

Firmware compilation & flash

The device cannot yet be flashed directly when starting an experiment. You must first start the experiment, then flash the device afterward. The flashing process currently requires a single merged .bin firmware image flashed at address 0x0.

This means you need to merge the different ESP32 binaries into a single binary before using the IoT-LAB flashing command. esptool provides a merge_bin subcommand for this purpose. The easiest way to generate the correct command is: Flash a device once in verbose mode to see the esptool write_flash command used internally.

Adapt this command for merge_bin:

Replace write_flash with merge_bin Remove the options: --port, --baud, --before, --after, and -z Add: -o <output_merged.bin>

You can then use the generated merged binary with IoT-LAB flashing.

IoT-LAB special configuration

The serial connection baudrate should be configured at 115200 bauds in the firmware.

The UID of the node corresponds to the MAC Address of the Wi-Fi radio chip in station mode.