SMS based on stm32f103+as608 fingerprint module +4x4 matrix key +sim900a - intelligent access control card system

1. Basic introduction

1. Use hardware

Serial number	name	remarks
1	STM32F103 Single chip microcomputer	I use it STM32F103C8T6
2	AS608 Fingerprint module	Fingerprint lock
3	SIM900A modular	Send verification code to use
4	4X4 Matrix key	Password input using
5	OLED display	The interface display uses ( My is OLED IIC Interface )
6	EEPROM	Save password to use ( My is AT24C02)
7	Relay	Simulate unlocking
8	Buzzer	Press the key to sound

2. Function is introduced

----------------------------------------------------------------------------------------------------------
1: You can unlock with a password
2: You can change the password
3: You can unlock with your fingerprint
4: You can add fingerprints
5: You can delete fingerprints
6: The password will not be lost after power failure
7. Support to view the input content

explain :
Input password 3 Time error Lock up , Need to unlock by verification code
To change the password, you need to enter the original password , If the original password is entered incorrectly , The verification code needs to be modified .
Add and remove fingerprints You also need to enter the original password to enter the interface to add or delete .
----------------------------------------------------------------------------------------------------------

2. Code

Because there's too much code , Not all of them are posted here . Need to be able to read the code under .

void init()
{
    
	printf("+Q:844797079");	
}

But I also have some notes

Fingerprint module

I also take notes , You can go to the link below to read
Fingerprint related introduction and code

SIM900A modular

I also take notes , You can go to the link below to read
SIM900A Related introduction and code

Matrix key

I also take notes , You can go to the link below to read
Matrix key related introduction and code

The main program

#include "stm32f10x.h"
#include "OLED_I2C.h"
#include "delay.h"
#include "timer.h"
#include "key.h"
#include "stdio.h"
#include "string.h"
#include "led.h"
#include "relay.h"
#include "beep.h"
#include "sim900a.h"
#include "usart.h"
#include "as608.h"
#include "at24cxx.h"
#include "myiic.h"


int  main()
{
    
	uint8_t result;
	OLED_Init();			//OLED Screen initialization 
	usart1_init(57600);		// A serial port 1 initialization   Used to communicate with fingerprint module 
	usart3_init(115200);	// A serial port 3 initialization   Used for and SIM900A Module communication 
	matrix_keys_init();		// Key initialization 
	timer3_init();			// Timer 3 initialization 
	timer4_init();			// Timer 4 initialization 
	led_init();				//LED initialization 
	relay_init();			// Relay initialization 
	beep_init();			// Buzzer initialization 
	while(sim900a_init());	//SIM900A initialization 
	oled_show_title();		//OLED Show title  " Intelligent access control "
	as60x_wak_init();		// Fingerprint module initialization 
	IIC_Init();				//IIC  initialization 
	at24c02_read_data(0,password_source,6);	// Read AT24C02 Stored password 

	while(1)
	{
    	
		// Verify fingerprint operation   Here is the setting that must be in   Only the main interface can be used 
		if(finger_status == FINGER_EXIST && curr_inteface == 0)
		{
    
			as608_process();	// Verify fingerprints and related operations 
		}	
		if(cls_inteface)		cls_process();		// Display and parameter reset  
		if(key_flag >= 10)		key_process();		// Press the key to handle related operations 
		if(oled_flag >= 85)		oled_process();		// Display processing related operations 
	}  
}

Project presentation

Here I will simply select a few functions for dynamic diagram demonstration

Verify password unlock Demo

Fingerprint verification unlock demonstration

Add fingerprint demo

Delete fingerprint Demo

design sketch

summary

design sketch .... It's too messy , DuPont line ..... unreliable . If you have time to learn to draw a board ....

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