bool writeUSBButton(unsigned char* barray, int autoconnect, bool transfer)
{
libusb_context *ctx = NULL;
struct libusb_device_handle *handle = NULL;
unsigned char mesg[USBBTN_MESG_LENGTH] = {0,0,0,0};
bool result = true;
int pos = 0;
int ret = 0;
if (transfer)
{
handle = openUSB(ctx, USBBTN_VENDOR, USBBTN_PRODUCT, USBBTN_INTERFACE, autoconnect);
if (!handle)
{
result = false;
goto error;
}
}
while (pos < USBBTN_SIZE)
{
memcpy(&mesg[0], &barray[pos], 4);
debug ("Writing (%i): %x, %x, %x, %x", pos, mesg[0], mesg[1], mesg[2], mesg[3]);
if (transfer)
{
ret = libusb_control_transfer(handle,
UM_REQUEST_TYPE,
UM_REQUEST,
USBBTN_VALUE,
USBBTN_INTERFACE,
mesg,
USBBTN_MESG_LENGTH,
UM_TIMEOUT);
debug ("Write result: %i", ret);
}
pos+=USBBTN_MESG_LENGTH;
}
exit:
if (transfer)
{
closeUSB(ctx, handle, USBBTN_INTERFACE);
}
else
{
log_info ("board array was not written out!!!");
}
return result;
error:
return result;
}
bool IntanThread::startAcquisition()
{
if (!simulateDataStream)
{
closeUSB();
initializeUSB(false);
ftdi_write_data(&ftdic, &startCode, 1);
}
startThread();
isTransmitting = true;
return true;
}
struct libusb_device_handle*
openUSB(libusb_context *ctx, uint16_t vendor, uint16_t product, int interface, int autoconnect)
{
int ret = 0;
struct libusb_device_handle *handle = NULL;
/* Open USB communication */
ret = libusb_init(&ctx);
if (ret < 0)
{
log_err("libusb_init failed: %i.", ret);
goto error;
}
libusb_set_debug(ctx, 3);
handle = libusb_open_device_with_vid_pid(ctx, vendor, product);
if (!handle)
{
log_err("Unable to open device.");
goto error;
}
if (interface != -1)
{
if (!claimInterface(handle, interface, autoconnect))
{
goto error;
}
}
exit:
return handle;
error:
closeUSB(ctx, handle, interface);
return NULL;
}
