static ssize_t
tellUsbDevice (
BrailleDisplay *brl, unsigned char request,
const void *data, size_t length
) {
return gioTellResource(brl->gioEndpoint,
MT_USB_CONTROL_RECIPIENT, MT_USB_CONTROL_TYPE,
request, 0, 0, data, length);
}
static int
tellResource (
uint8_t request, uint16_t value, uint16_t index,
const unsigned char *data, uint16_t size
) {
ssize_t result = gioTellResource(gioEndpoint, UsbControlRecipient_Endpoint, UsbControlType_Vendor,
request, value, index, data, size);
return result != -1;
}
