> help
Commands:
  list                          -> show test-safe GPIOs
  status                        -> show current pin/mode
  pin <gpio>                    -> start blinking GPIO
  <gpio>                        -> same as 'pin <gpio>'
  delay <ms>                    -> set blink delay
  pwm <pin> [brightness]        -> start PWM (0-99, current: 50%)
  brightness <level>            -> set PWM brightness (0-99)
  freq <frequency>              -> set PWM frequency (Hz)
  stop                          -> stop and release pin

> 48
Stopped. Pin released to INPUT.
Blinking GPIO 48 at 100 ms.

> 42
Stopped. Pin released to INPUT.
Blinking GPIO 42 at 100 ms.

> 47
Stopped. Pin released to INPUT.
Blinking GPIO 47 at 100 ms.

> 46
Restricted: GPIO 46 is not in the test-safe set.

> delay 40
Set blink delay to 40 ms.

> delay 10
Set blink delay to 10 ms.