| # Board Test |
| |
| A minimal bring-up test that exercises a board's basic I/O without using the USB stack. Both the device and host stacks are disabled (`CFG_TUD_ENABLED`/`CFG_TUH_ENABLED` are `0`), so this is the first thing to run when porting to new hardware. |
| |
| ## What it does |
| |
| - Blinks the on-board LED. The interval changes with the button: 1000 ms when the button is not pressed, 250 ms while it is held. |
| - Prints `Hello from TinyUSB` over `stdout`/UART on each blink. |
| - Echoes any character received on UART back out. |
| |
| (No USB class interfaces are present — this example does not enumerate as a USB device.) |
| |
| ## Configuration |
| |
| Notable `tusb_config.h` settings: |
| |
| ```c |
| #define CFG_TUD_ENABLED 0 // device stack disabled |
| #define CFG_TUH_ENABLED 0 // host stack disabled |
| ``` |
| |
| ## Building |
| |
| CMake: |
| |
| ```bash |
| mkdir build && cd build |
| cmake -DBOARD=raspberry_pi_pico .. |
| cmake --build . |
| ``` |
| |
| Make: |
| |
| ```bash |
| make BOARD=raspberry_pi_pico all |
| ``` |
| |
| ## Try it |
| |
| Flash the firmware and watch the on-board LED blink. Open the board's UART (serial console) to see `Hello from TinyUSB` printed repeatedly, and type characters to see them echoed back. Press and hold the button to speed up the blink rate. |
