Smart Fingerprint Door Lock Based on RT-Thread

●Hardware Circuit:

https://oshwhub.com/hanxiaohu/zhi-wen-men-suo

●APP Project:

https://gitee.com/hanxiaohu/SmartLock-Android

1.1 Project Introduction

The main control chip uses the W600 TW-03 WIFI module, and fingerprint recognition uses the FPC1020A. Here, the door is opened using the MG996R servo to unlock the door. The W600 runs the RT-Thread operating system and connects to OneNET for data interaction.

● Uses W600 embedded WiFi chip

● Uses FPC1020A capacitive fingerprint recognition module

● Supports fingerprint recognition to open the door

● Supports NEC infrared remote control to open the door

● Supports OneNET remote door opening

● Supports oneshot web network configuration

● OneNET to check the door-opening status and record the method of opening the door and custom ID

● Network auto-detection to maintain connection status

● Android APP to control door opening and view history records

1.2 Hardware Circuit

Figure 1

The circuit design uses Lichuang EDA, and all hardware information for the project is on the Lichuang open-source hardware platform.

●Hardware Project Address:

https://oshwhub.com/hanxiaohu/zhi-wen-men-suo

Table 1

1.3 W600 Introduction

Chip information: [W600 Documentation Center](https://docs.w600.fun/)

The W600 is an embedded WiFi chip independently developed and designed by Beijing Lianshengde. This series of modules supports the standard 802.11 b/g/n protocol and has a complete TCP/IP protocol stack built-in.

The 600_SoC chip integrates a Cortex-M3 core, built-in Flash, integrated RF transceiver front-end, CMOS PA power amplifier, baseband processor/media access control, and supports SDIO, SPI, UART, GPIO, I²C, PWM, I²S, 7816, and other interfaces, supporting multiple encryption and decryption protocols such as PRNG (Pseudo random Number Generator)/SHA1/MD5/RC4/DES/3DES/AES/CRC, etc.

1.4 Code

The project environment setup and compilation are introduced in the project compilation guide; here, only a brief introduction to the project composition is provided.

Figure 2

Table 2

1.5 OneNET

Reference materials: [OneNET Documentation Center]

(https://open.iot.10086.cn/doc/multiprotocol)

1.5.1 Create Project

Open the [OneNET Console]（https://open.iot.10086.cn/develop/global/product/#/console） to enter multi-protocol access.

Figure 3

On the MQTT (old version) page, click to add a product. Ensure that the device access protocol is MQTT, and fill in the other fields arbitrarily.

Figure 4

1.5.2 Get Connection Parameters

After the project is successfully created, you need to obtain three parameters:

● Product ID

● Master-API key

● Device registration code

Figure 5

Figure 6

1.5.3 Configure RT-Thread

Open the rtconfig.h file and paste your three parameters into the corresponding positions.

Figure 7

1.5.4 Data Stream

The device uploads two data streams:

● Door switch status

● Historical door opening methods

Check the device details.

Figure 8

The switch status depends on the sensor that detects the door opening status. Here, a Hall sensor module is used, with a magnet installed on the door frame. When the door is closed, the Hall sensor is close to the magnet and outputs a low level. At this time, the W600 reads the level and uploads it to OneNET.

The historical door opening record consists of type and ID, where the type is defined in applications\user_def.h.

enum {IR_MSG = 1, FP_MSG, REMOTE_MSG};

1.5.5 Door Opening Test

Here you can manually test the remote door opening function.

Figure 9

The door opening data format is:

{"opendoor":id}

The verification of the door opening identification code is in applications\onenet_control.c, and you can format the data yourself.

static void onenet_cmd_rsp_cb(uint8_t *recv_data, size_t recv_size, uint8_t **resp_data, size_t *resp_size){
 int open_id = 0; cJSON *root = cJSON_Parse((char *)recv_data);  cJSON_item_get_number(root,"opendoor",&open_id);      if (open_id != 0)    {        rt_sem_release(&door_open_sem);    .....}

1.6 APP

●APP Project:

https://gitee.com/hanxiaohu/SmartLock-Android

Control the door opening and check the door switch status and historical opening records through the Android APP connected to OneNET.

Figure 10

2.1 RT-Thread Introduction

RT-Thread is an open-source IoT operating system from China, which has very strong scalability: from a very small kernel that can run on Arm Cortex-M0 chips to medium Arm Cortex-M3/4/7 systems, and even running on MIPS32 and Arm Cortex-A series processors. The source code of the RT-Thread project is hosted on [GitHub repo] (https://github.com/rt-thread).

2.2 Reference Materials

● RT-Thread documentation: RT-Thread Documentation Center

（https://www.rt-thread.org/document/site）

● W60x reference documentation: W600 Documentation Center

（https://docs.w600.fun/?p=rt-thread/start.md）

● W60x reference materials: Zhen Dian Yuan Zi W601 IoT Development Board

（http://www.openedv.com/docs/boards/iot/zdyz_w601.html）

● W60x_RT-Thread source code: GitHub

（https://github.com/RT-Thread/W601_IoT_Board）

● Serial download tool: Serial Debug Assistant

2.3 Environment Setup

2.3.1 Building the Compilation Environment

● Keil MDK

● Download W60x_RT-Thread SDK source code: GitHub

（https://github.com/RT-Thread/W601_IoT_Board）

2.3.2 Project Directory Introduction

The directory structure of the W60X SDK is shown in Figure 11:

Figure 11

2.4 Compilation and Burning

2.4.1 Compilation

Clone the repository into the examples folder of the project directory.

Enter the project folder, double-click to open the project.uvprojx project file, and compile directly after opening the project (Note: Make sure to set up the Keil environment first).

Figure 12

The firmware is generated in the Bin folder of the current example directory.

Figure 13

2.4.2 Burning

Open the Xintong Zhili download debugging software and select rtthread_layout_1M.FLS for burning. The model can be left unselected. If the serial port is not connected, reset it. After clicking download, you need to manually reset the W600.

Figure 14

Reposted from | Anxins Technology Classroom