_WriteCallback
txData, count, _WriteCallback, this);
static void _WriteCallback(void *cookie, int32 status,
*numBytes, _WriteCallback, this);
static void _WriteCallback(void *cookie, int32 status,
result = gUSBModule->queue_bulk_v(fWriteEndpoint, vec, 2, _WriteCallback, this);
static void _WriteCallback(void *cookie, int32 status,