cls.get_last_error

Summary	#include <RTL.h> #include <rl_usb.h> #include "usb_for_lib.h" U32 GetLastError ( U8 ctrl, U8 dev_idx );
Description	The GetLastError function returns the last error that happened on requested dev_idx device instance on requested ctrl USB Host Controller. You can modify this function to suit different class driver. This function will need to be changed for class that does not have driver provided.
Return Value	The GetLastError 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_DCD Indicates that requested device class driver instance is invalid. 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_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_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.
See Also	cls.config, cls.init, cls.unconfig, cls.uninit
Example	/* MSC Class Driver Control Block / USBH_DCD usbh_dcd_cls = { USB_DEVICE_CLASS_STORAGE, Config, UnConfig, Init, UnInit, GetLastError* }; static U32 GetLastError (U8 ctrl, U8 dev_idx) { return (usbh_dci_msc[ctrl*usbh_msc_num+dev_idx].LastError); }