from usbtoxxx.h:211
RESULT usbtomicrowire_transport(uint8_t interface_index,
uint32_t opcode,
uint8_t opcode_bitlen,
uint32_t addr,
uint8_t addr_bitlen,
uint32_t data,
uint8_t data_bitlen,
uint8_t *reply,
uint8_t reply_bitlen);