ST STM32F4 Discovery

The board has no wireless or on-chip Ethernet, so the USB OTG-FS port is the transport for every Dawn protocol:

serial and Modbus-RTU ride USB CDC/ACM (device node /dev/ttyACM0);
Modbus-TCP and UDP ride USB CDC-ECM (a network interface, static IP).

The text console and logs stay on USART2, wired to the ST-LINK virtual COM port, so the USB port is left entirely to the protocol under test.

The configs reuse the shared example descriptors; the serial/Modbus-RTU device path is taken from CONFIG_DAWN_PROTO_SERIAL_PATH / CONFIG_DAWN_PROTO_MODBUS_RTU_PATH (/dev/ttyACM0 here) rather than being hard-coded in the descriptor.

Configs

blinky_shell

Runtime-control example using the same descriptor as the simulator nsh_blinky_shell. Uses blinky_shell_demo.yaml and is driven from the NSH prompt on the USART2 console.

serial

Serial access to demo data plus the LEDs and button over USB CDC/ACM. Uses the shared serial_leds_buttons_demo.yaml.

Host tool: dawnpy-serial.

nxscope

Dedicated NXScope demo over USB CDC/ACM. Streams the on-board LIS3DSH accelerometer, pushes the user button asynchronously (notify), and drives the four user LEDs from the host. Uses stm32f4disco_nxscope.yaml.

Host tool: NxScli (nxscli serial /dev/ttyACMx) to stream the accel/button channels, plus the dawn-nxscope plugin’s set_io to control the LEDs.

modbus_rtu

Modbus-RTU controlled LED sequencer over USB CDC/ACM. Uses the shared blinky_modbus_rtu_demo.yaml and exposes start/stop plus writable runtime blink configuration over Modbus holding registers.

Host helper: tools/examples/blinky/modbus_blinky_cli.py.

modbus_ntfc

NTFC Modbus-RTU profile using the shared ntfc_modbus_rtu_dummy_map.yaml over USB CDC/ACM.

modbus_tcp

Modbus-TCP controlled blinky demo over USB CDC-ECM. Uses blinky_modbus_tcp_demo.yaml. The board takes the static address 192.168.9.2 and the Modbus TCP server listens on port 502.

Host helper: tools/examples/blinky/modbus_tcp_blinky_cli.py.

modbus_tcp_ntfc

NTFC Modbus-TCP profile over USB CDC-ECM. Uses qemu_modbus_tcp_dummy_map.yaml with the link-local address 169.254.7.2 so the host needs no network configuration.

udp

UDP controlled blinky demo over USB CDC-ECM. Uses blinky_udp_demo.yaml. The board takes the static address 192.168.9.2 and listens on port 50000.

Host helper: tools/examples/blinky/udp_blinky_cli.py.

udp_ntfc

NTFC UDP profile over USB CDC-ECM. Uses udp_basic.yaml with the link-local address 169.254.7.2 on port 50000.