[Bug] City Hub does not turn itself off after timeout.

[laurensvalk]

Describe the bug
It is supposed to turn off after a few minutes if not connected.

Or maybe it does, but it turns itself back on?

Could be related to the recent ioport changes.

[dlech]

This was fixed most recently by pybricks/pybricks-micropython@019d95c.

It is probably broken again by pbdrv_ioport_init(); in

void pbdrv_ioport_deinit(void) {
    pbdrv_ioport_init();

    // Turn off power on pin 4 on all ports. This is set to input instead of
    // low to avoid city/move hubs turning back on when button released.
    // as soon as the user releases the power button
    pbdrv_gpio_input(&pbdrv_ioport_pup_platform_data.port_vcc);
}

pbdrv_ioport_deinit() is called multiple times by the pbsys_io_ports_poll() so the VCC keeps getting set to out low instead of input which is what was identified as the issue previously. Also the pbdrv_init_busy_up/down() triggered by this could keep the hub from shutting down.

[laurensvalk]

Suggested fixes above implemented in by pybricks/pybricks-micropython@f5d0d81, and now the hub times out and shuts down normally.