usbh_get_last_error

#include <rl_usb.h>

U32 usbh_get_last_error (
  U8  ctrl
);

The usbh_get_last_error function returns the last error that happened on requested ctrl USB Host Controller.

The usbh_get_last_error function is part of the RL-USB-Host software stack.

The usbh_get_last_error function returns one of the following manifest constants.

• ERROR_SUCCESS
  Success.
• ERROR_USBH_HCI
  Indicates that requested host controller instance is invalid.
• ERROR_USBH_HCD
  Indicates that requested host controller driver instance is invalid.
• ERROR_USBH_DCI
  Indicates that requested device class instance is invalid.
• ERROR_USBH_DCD
  Indicates that requested device class driver instance is invalid.
• ERROR_USBH_MEM_INIT
  Indicates that memory pool was not properly initialized.
• ERROR_USBH_MEM_ALLOC
  Indicates that memory block was not allocated.
• ERROR_USBH_MEM_DEALLOC
  Indicates that memory block was not deallocated.
• ERROR_USBH_PINS_CONFIG
  Indicates that pins were not configured.
• ERROR_USBH_INIT
  Indicates that host controller hardware was not initialized.
• ERROR_USBH_PORT_POWER
  Indicates that port was not powered on/off.
• ERROR_USBH_PORT_RESET
  Indicates that port was not reset.
• ERROR_USBH_EP
  Indicates that endpoint handle was invalid.
• ERROR_USBH_EP_ADD
  Indicates that endpoint was not added.
• ERROR_USBH_EP_CONFIG
  Indicates that endpoint was not configured.
• ERROR_USBH_EP_REMOVE
  Indicates that endpoint was not removed.
• ERROR_USBH_URB
  Indicates that URB handle was invalid.
• ERROR_USBH_URB_SUBMIT
  Indicates that transfer was not submitted.
• ERROR_USBH_URB_CANCEL
  Indicates that transfer was not cancelled.
• ERROR_USBH_URB_TRANSFER
  Indicates that transfer has failed due to transfer error.
• ERROR_USBH_URB_TOUT
  Indicates that transfer has failed due to timeout.
• ERROR_USBH_ENUMERATE
  Indicates that connected device was not enumerated.
• ERROR_USBH_UNINIT_DEVS
  Indicates that disconnected device resources were not uninitialized.
• ERROR_USBH_MSC
  Indicates that requested mass storage device instance is invalid.
• ERROR_USBH_MSC_SIG
  Indicates that mass storage device returned wrong signature in command status word.
• ERROR_USBH_MSC_TAG
  Indicates that mass storage device returned wrong tag in command status word.
• ERROR_USBH_MSC_RESID
  Indicates that mass storage device returned residue in command status word.
• ERROR_USBH_HID
  Indicates that requested human interface device instance is invalid.
• ERROR_USBH_CLS
  Indicates that requested custom device instance is invalid.
• ERROR_USBH_CLS_UNKNOWN
  Indicates that enumerated device is of unknown class.

usbh_engine, usbh_engine_all, usbh_get_error_string, usbh_init, usbh_init_all, usbh_uninit, usbh_uninit_all

#include <rl_usb.h>

int main (void)  {
  ..

  if (usbh_init(0) == __FALSE) {
    switch (usbh_get_last_error(0))  {
      case ERROR_USBH_INIT:
        ...
    ..
  }
  ..
}