ssize_t
usbWriteEndpoint (
UsbDevice *device,
unsigned char endpointNumber,
const void *buffer,
size_t length,
int timeout
) {
UsbEndpoint *endpoint;
if ((endpoint = usbGetOutputEndpoint(device, endpointNumber))) {
UsbEndpointExtension *eptx = endpoint->extension;
ssize_t count;
doWrite:
if ((count = write(eptx->data, buffer, length)) == -1) {
if (errno == EINTR) goto doWrite;
logSystemError("USB endpoint write");
} else if (count != length) {
logMessage(LOG_ERR, "USB truncated endpoint write: %d < %d", count, length);
errno = EIO;
} else {
return count;
}
}
return -1;
}
ssize_t
usbWriteEndpoint (
UsbDevice *device,
unsigned char endpointNumber,
const void *buffer,
size_t length,
int timeout
) {
UsbDeviceExtension *devx = device->extension;
if (usbGetHandle(devx)) {
const UsbEndpoint *endpoint;
if ((endpoint = usbGetOutputEndpoint(device, endpointNumber))) {
const UsbEndpointDescriptor *descriptor = endpoint->descriptor;
UsbEndpointTransfer transfer = USB_ENDPOINT_TRANSFER(descriptor);
int actual_length;
int result;
switch (transfer) {
case UsbEndpointTransfer_Bulk:
result = libusb_bulk_transfer(devx->handle, descriptor->bEndpointAddress,
(void *)buffer, length, &actual_length, timeout);
break;
case UsbEndpointTransfer_Interrupt:
result = libusb_interrupt_transfer(devx->handle, descriptor->bEndpointAddress,
(void *)buffer, length, &actual_length, timeout);
break;
default:
logMessage(LOG_ERR, "USB endpoint output transfer not supported: 0X%02X", transfer);
result = LIBUSB_ERROR_NOT_SUPPORTED;
break;
}
if (result == LIBUSB_SUCCESS) return actual_length;
usbSetErrno(result, NULL);
}
}
logSystemError("USB endpoint write");
return -1;
}
ssize_t
usbWriteEndpoint (
UsbDevice *device,
unsigned char endpointNumber,
const void *buffer,
size_t length,
int timeout
) {
UsbDeviceExtension *devx = device->extension;
UsbEndpoint *endpoint;
if ((endpoint = usbGetOutputEndpoint(device, endpointNumber))) {
const UsbEndpointDescriptor *descriptor = endpoint->descriptor;
UsbEndpointTransfer transfer = USB_ENDPOINT_TRANSFER(descriptor);
int result = -1;
usbLogEndpointData(endpoint, "output", buffer, length);
switch (transfer) {
case UsbEndpointTransfer_Bulk:
result = usb_bulk_write(devx->handle, descriptor->bEndpointAddress,
(char *)buffer, length, timeout);
break;
case UsbEndpointTransfer_Interrupt:
result = usb_interrupt_write(devx->handle, descriptor->bEndpointAddress,
(char *)buffer, length, timeout);
break;
default:
logMessage(LOG_ERR, "USB endpoint output transfer not supported: 0X%02X", transfer);
result = -ENOSYS;
break;
}
if (result >= 0) return result;
errno = -result;
}
logSystemError("USB endpoint write");
return -1;
}
ssize_t
usbWriteEndpoint (
UsbDevice *device,
unsigned char endpointNumber,
const void *buffer,
size_t length,
int timeout
) {
UsbEndpoint *endpoint;
if ((endpoint = usbGetOutputEndpoint(device, endpointNumber))) {
UsbEndpointTransfer transfer = USB_ENDPOINT_TRANSFER(endpoint->descriptor);
switch (transfer) {
case UsbEndpointTransfer_Interrupt:
case UsbEndpointTransfer_Bulk:
return usbBulkTransfer(endpoint, (void *)buffer, length, timeout);
/*
case UsbEndpointTransfer_Interrupt: {
struct usbdevfs_urb *urb = usbInterruptTransfer(endpoint, (void *)buffer, length, timeout);
if (urb) {
ssize_t count = urb->actual_length;
free(urb);
return count;
}
break;
}
*/
default:
logMessage(LOG_ERR, "USB output transfer not supported: %d", transfer);
errno = ENOSYS;
break;
}
}
return -1;
}