usb_cdc_echo Directory Reference

Directory dependency graph for usb_cdc_echo:

Directories
	src

Detailed Description

ThreadX + USBX CDC ACM echo on the board's on-board USB-FS receptacle (J11), through the project's USBX device-controller bridge onto the hand-written ra8_usb driver (HUM Ch 36 "USBFS"). USBX's chapter-9 state machine answers SETUP packets through that bridge, which is what makes the host enumerate the device at all; the worker thread then loops read-then-write, and LED1 toggles per byte echoed.

threadx_usbx_cdc_demo is the same echo test through the same stack.

It is manual because the verdict is at the other end of the cable: a PC has to open the enumerated serial port, type into it, and see the bytes come back. J10 carries the J-Link OB, J11 is the device under test.