Function AP_HAL__I2CDevice_transfer

libraries/AP_Scripting/lua_bindings.cpp:662–687

}

int AP_HAL__I2CDevice_transfer(lua_State *L) {
    binding_argcheck(L, 3);

    AP_HAL::I2CDevice * ud = *check_AP_HAL__I2CDevice(L, 1);

    // Parse string of bytes to send
    size_t send_len;
    const uint8_t* send_data = (const uint8_t*)(lua_tolstring(L, 2, &send_len));

    // Parse and setup rx buffer
    uint32_t rx_len = get_uint8_t(L, 3);
    uint8_t rx_data[rx_len];

    // Transfer
    ud->get_semaphore()->take_blocking();
    const bool success = ud->transfer(send_data, send_len, rx_data, rx_len);
    ud->get_semaphore()->give();

    if (!success) {
        return 0;
    }

    // Return a string
    lua_pushlstring(L, (const char *)rx_data, rx_len);
    return 1;
}

#if AP_SCRIPTING_CAN_SENSOR_ENABLED
int lua_get_CAN_device(lua_State *L) {