Intelligent flowerpot design based on 51 microcontroller

Item name:

Intelligent flowerpot design based on microcontroller

Microcontroller: STC89C52

Function:

1. Display the temperature and humidity of the soil in the flower pot and the light intensity outside the flower pot through the display screen;

2. Use the buttons to switch the display interface and set the minimum soil temperature value, minimum humidity value, light intensity value outside the flowerpot, infusion countdown, and soil loosening countdown;

3. Detect soil moisture through soil moisture sensor and soil temperature through DS18B20;

4. Control the heating plate, water pump, infusion, and fill light through relays;

5. Realize soil loosening through stepper motor;

Part of the program:

#include "main.h"

#include "lcd1602.h"

#include "key.h"

#include "ds18b20.h"

#include "adc.h"

#include "motor.h"

#include "timer.h"

/**********************************

Variable definitions

************************************/

uchar key_num = 0; //key scan flag

uchar flag_display = 0; //Display mode flag bit

bit flag_display_cut = 0; //Switch interface flag bit

uint time_num = 0; //10ms count variable

uint temp_value = 0; //Temperature value

uchar temp_min = 10; //Minimum temperature value

uint humi_value = 0; //Humidity value

uchar humi_min = 30; //Minimum humidity value

uint light_value = 0; //Light intensity value

uchar light_min = 50; //Minimum light intensity value

uchar time_songtu = 0; // loosening time

uint time_minus_songtu = 0; //Loose soil countdown time

uchar time_shuye = 0; //Infusion time

uint time_minus_shuye = 0; //Infusion countdown time

extern bit flag_songtu_begin; //Songtu start flag bit

extern bit flag_songtu_finish; //Songtu completion flag bit

extern bit flag_shuye_begin; //Infusion start flag bit

extern bit flag_shuye_finish; //Infusion completion flag bit

/**********************************

function declaration

************************************/

void Delay_function(uint x); //Delay function

void Key_function(void); //Key function

void Monitor_function(void); //Monitoring function

void Display_function(void); //Display function

void Manage_function(void); //processing function

/****

******* Main function

*****/

void main()

{

Lcd1602_Init(); //LCD1602 initialization

Delay_function(50);

lcd1602_clean(); //Clear screen

Delay_function(50);

Ds18b20_Init(); //DS18B20 initialization

Delay_function(50);

Timer0_Init(); //Initialize timer 0

Delay_function(50);

while(1)

{

Key_function(); //Key function

Monitor_function(); //Monitoring function

Display_function(); //Display function

Manage_function(); //processing function

Delay_function(10); //Delay 10ms

time_num++; //10ms interval timing variable +1

if(time_num >= 5000) //The timer accumulates to 5000, and then starts accumulating from 0 again

{

time_num = 0;

}

}

}

/****

******* Delay x ms function

*****/

void Delay_function(uint x)

{

uint m,n;

for(m=x;m>0;m--)

for(n=110;n>0;n--);

}

/****

*******Key function

*****/

void Key_function(void)

{

key_num = Chiclet_Keyboard_Scan(0); //Key scan

if(key_num != 0) //A key is pressed

{

switch(key_num)

{

case 1: //Button 1, switch interface

flag_display++;

if(flag_display >= 6) //A total of 6 interfaces

flag_display = 0;

lcd1602_clean(); //Click once to clear the screen once

break;

case 2:

switch(flag_display)

{

case 0: //When the interface is 0, manually loosen the soil

Motor_Foreward();

break;

case 1: //When the interface is 1, modify the minimum temperature value +1

if(temp_min < 99)

temp_min++;

break;

case 2: //When the interface is 2, modify the minimum humidity value +1

if(humi_min < 99)

humi_min++;

break;

case 3: //When the interface is 3, modify the minimum lighting value +1

if(light_min < 99)

light_min++;

break;

case 4: //When the interface is 4, modify the loosening time +1

time_songtu++;

time_minus_songtu = time_songtu*60;

break;

case 5: //When the interface is 5, modify the infusion time +1

time_shuye++;

time_minus_shuye = time_shuye*60;

break;

default:

break;

}

break;

case 3: //Button 3

switch(flag_display)

{

case 0: //When the interface is 0, manual infusion

RELAY_SHUYE = 0; //Close the infusion relay and start infusion

Delay_function(3000); //Infusion for three seconds

RELAY_SHUYE = 1; //Disconnect the infusion relay and stop the infusion

break;

case 1: //When the interface is 1, modify the minimum temperature value -1

if(temp_min > 0)

temp_min--;

break;

case 2: //When the interface is 2, modify the minimum humidity value -1

if(humi_min > 0)

humi_min--;

break;

case 3: //When the interface is 3, modify the minimum lighting value to -1

if(light_min > 0)

light_min--;

break;

case 4: //When the interface is 4, modify the loosening time by -1

if(time_songtu > 0)

{

time_songtu--;

time_minus_songtu = time_songtu*60;

}

break;

case 5: //When the interface is 5, modify the infusion time by -1

if(time_shuye > 0)

{

time_shuye--;

time_minus_shuye = time_shuye*60;

}

break;

default:

break;

}

break;

case 4: //Button 4, switch interface

flag_display_cut = ~flag_display_cut;

lcd1602_clean(); //Click once to clear the screen once

break;

default:

break;

}

}

}