AG903ライブラリリファレンス
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1: struct usbd_usb_deviceinfo * Usbh_Api_EnumDevice( struct usbd_usb_deviceinfo * pParent, struct usbd_usb_deviceinfo * pChild ) 2: { 3: int i = 0; 4: struct usbd_usb_deviceinfo * dev = NULL; 5: 6: if ( pParent == NULL) { 7: CORE_REPORT_ERROR( USBC_INVALID_PARAMETER ); 8: return NULL; 9: } 10: 11: if ( pChild == NULL ) { 12: 13: for ( i=1; i<USB_ENUMDEV_MAXDEV; i++ ) { 14: if ( pParent->usbdev_LowerHub[i] != NULL ) { 15: dev = pParent->usbdev_LowerHub[i]; 16: break; 17: } 18: } 19: } else { 20: 21: for ( i=1; i<USB_ENUMDEV_MAXDEV; i++ ) { 22: if ( pParent->usbdev_LowerHub[i] == pChild ) { 23: break; 24: } 25: } 26: if ( i >= USB_ENUMDEV_MAXDEV ) { 27: 28: dev = NULL; 29: } else { 30: 31: for ( i++; i<USB_ENUMDEV_MAXDEV; i++ ) { 32: if ( pParent->usbdev_LowerHub[i] != NULL ) { 33: dev = pParent->usbdev_LowerHub[i]; 34: } 35: } 36: } 37: } 38: 39: return dev; 40: }
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