usbh_msc_status

#include <rl_usb.h>

BOOL usbh_msc_status (
  U8  ctrl,      // USB Host Controller index
  U8  dev_idx    // USB Device index
);

The function usbh_msc_status checks whether a mass storage device is connected. The argument ctrl is the index of USB Host Controller. The argument dev_idx is the index of device instance.

The function is part of the RL-USB Host Class Driver software layer.

• __TRUE = device connected and initialized
• __FALSE (0) = device not connected

usbh_msc_get_last_error, usbh_msc_read, usbh_msc_read_config, usbh_msc_write

#include <rl_usb.h>

int main (void) {

  ..
  init_msd ();                // Initialize mass storage device
  while (1) {
    usbh_engine(0);
    if (!usbh_msc_status(0, 0)) {  // If device 0 on controller 0 is not connected
      usbh_engine(0);
    }
    ..
  }
}