usbopen.c

来自「How to control USB interface under SZ pl」· C语言 代码 · 共 19 行

#include "usb_pptt.h"
#include "usb_pvar.h"
#include "usb_pdef.h"
#include "DMA_pptt.h"
#include "usb.h"

DMA_CONFIG      _gUsbDMAconfig;
CHAN_NUM        _gUsbDMAchNum;    /* DMA channel number */
P_USB_CALLBACKS _gUsbCallbacks;

STATUS _UsbOpen(void *pUsbCallbacks)
{
    // record callback functions
    _gUsbCallbacks = (P_USB_CALLBACKS)pUsbCallbacks;
    
    _gUsbMode = USB_USE_INTR_ONLY;
    _gUsbDrvStatus[0] = _gUsbDrvStatus[1] = USB_DRV_READY;
}