Created July 16, 2023

Smart Lock based on RT-Thread

The smart lock provide access control for personnel to access certain room or access to locker. The smart lock operate by using bluetooth fr

Things used in this project

Hardware components

NXP MIMXRT1060-EVKB

i.MX RT evaluation boards provide a powerful, extendable platform or evaluation and prototyping using the MCUXpresso suite of software and tools. An Arduino UNO site is provided for expansion using NXP or 3rd party shield boards. The boards feature a high speed USB debug probe based with easy firmware update options to support CMSIS-DSP or a special version of J-link LITE from SEGGER

Story

The smart lock provide access control for personnel to access certain room or access to locker. The smart lock operate by using bluetooth from phone APP to unlock. the smart lock is build with the NXP RT1060EVKB with bluetooth module https://www.murata.com/en-sg/products/connectivitymodule/wi-fi-bluetooth/overview/nxp-imx , it is connected to the cloud backend as an edge IoT device, where user access control can be managed on the cloud backend. This smart lock can be used for application like meeting room access in factory, guest room and facility room access at hotel, or locker access for tourist at museum.for demo of this project, we build a lock that can unlock / lock a casing using phone app with the RT1060EVKB

Here is the official description of the evaluation board.

The smart lock is built with circuit diagram below. The 3.3V GPIO of arduino compatible header is used to control a relay module. The relay module in turn is used to lock unlock a magnetic lock. The MIMXRT1060 board is connected to the internet via home router and a phone is able to send command to unlock the door.

Steps on Producing the Project

I use RT-Thread instead of MCUXpresso.

Setting up

Download

1) BSP : download and put to C:\RTT\bsp\imxrt\imxrt1060-nxp-evk

Using Env tool

1) browse to C:\RTT\bsp\imxrt\imxrt1060-nxp-evk, and uses env tool with the context menu ConEmu here

right click context menu in the BSP folder to enter the env tool

2) import the configured BSP

importing the BSP project

3) The directory structure look like below

The build fails due to wrong tool

after further checking, seems like link script is wrong

the m_data size is defined as below

#define m_data_size (0x01E00000 - m_interrupts_ram_size)

using https://ss64.com/convert.html i change it to

0x01E00000 is 31457.28kB

0x0001F400 is 128kB or 128000 bytes

however, the changes above fail. i then find that the linker script might be the culprit

looking at link.lds

we change the 0x20000 (131kB) to 0x1F400 (128kB)

Code

main.c

/*
 * Copyright (c) 2006-2023, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2019-04-29     tyustli      first version
 */

#include "MIMXRT1062.h"
#include <rtdevice.h>
#include "drv_gpio.h"
#include "core_cm7.h"

/* defined the LED pin: GPIO1_IO9 */
#define LED0_PIN               GET_PIN(1, 9)

int main(void)
{
#ifndef PHY_USING_KSZ8081
    /* set LED0 pin mode to output */
    rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);

    while (1)
    {
        rt_pin_write(LED0_PIN, PIN_HIGH);
        rt_thread_mdelay(500);
        rt_pin_write(LED0_PIN, PIN_LOW);
        rt_thread_mdelay(500);
    }
#endif
}

void reboot(void)
{
    NVIC_SystemReset();
}
MSH_CMD_EXPORT(reboot, reset system)

Credits

Lea Kun

6 projects • 0 followers

i own an engineering software company

Smart Lock based on RT-Thread

Things used in this project

Hardware components

Story

Schematics