control WS2812B_RGB lamp by TFT LCD

Heriberto Batchellor · Oct 13, 2021

Brief introduction

This article documented the process of controlling the WS2812B_RGB lamp using the STONE display module.
RGB lamp is a kind of lamp that we often see in our daily life. It is widely used, such as: city night scene, light show, indoor lighting, auxiliary lighting, advertising module lighting, luminous word, counter lighting, shopping mall lighting, jewelry display case lighting, etc.

GUI design

c-5-Control-WS2812B_RGB-lamp-by-STONE-display-module(7).jpg

Connection

c-5-Control-WS2812B_RGB-lamp-by-STONE-display-module(23).jpg

part of code

C:

#define RED_COLOR     0x07

#define ICON_WHITE_ADDR  0x02

#define ICON_RED_ADDR    0x03

#define ICON_GREEN_ADDR  0x04

#define ICON_BLUE_ADDR   0x05

 

#define TEXT_RED_ADDR         0x07

#define TEXT_GREEN_ADDR       0x08

#define TEXT_BLUE_ADDR        0x09

#define TEXT_WHITE_ADDR       0x06

 

#define SWITCH_ONOFF_ADDR     0x01

 

#define ICON_ON          0x01

#define ICON_OFF         0x00

u8 data_send[8]=  {0xA5, 0x5A, 0x05, 0x82, 0x00, 0x00, 0x00,0x00};

 

Data sent to the display screen should be sent according to the corresponding format:

U8 data_send[8]= {0xA5, 0x5A, 0x05, 0x82, 0x00,0x00,0x00,0x00};

Data [4]\ data[5] is the high and low order of component addresses.

Data [6]\ data[7] is the data to be displayed by the component.

The main logical code will be provided below:

#include "stm32f10x.h"

#include "usart.h"

#include "delay.h"

#include "../BOARD/ws2812/ws2812.h"

struct RGB_COLOR

{

u8 C_RED;

u8 C_GREEN;

u8 C_BLUE;

u8 C_WHITE;

 

u8 C_RED_FLAG;

u8 C_GREEN_FLAG;

u8 C_BLUE_FLAG;

};

#define ICON_WHITE_ADDR  0x02

#define ICON_RED_ADDR    0x03

#define ICON_GREEN_ADDR  0x04

#define ICON_BLUE_ADDR   0x05

 

#define TEXT_RED_ADDR         0x07

#define TEXT_GREEN_ADDR       0x08

#define TEXT_BLUE_ADDR        0x09

#define TEXT_WHITE_ADDR       0x06

#define SWITCH_ONOFF_ADDR     0x01

#define ICON_ON          0x01

#define ICON_OFF         0x00

u8 data_send[8]=  {0xA5, 0x5A, 0x05, 0x82, 0x00, 0x00, 0x00,0x00};

void UART1_Send_Array(u8 send_array[],unsigned char num)

{

        u8 i=0; 

        while(i

        {

                USART_SendData(USART1,send_array[i]); 

                while( USART_GetFlagStatus(USART1,USART_FLAG_TC)!= SET); 

                i++; 

        }

}

int main(void)

{

  uart_init(115200);

  delay_init();

struct RGB_COLOR USER_RGB_COLOR;

USER_RGB_COLOR.C_BLUE=0;

USER_RGB_COLOR.C_GREEN=0;

USER_RGB_COLOR.C_RED=0;

USER_RGB_COLOR.C_RED_FLAG=1;

USER_RGB_COLOR.C_GREEN_FLAG=1;

USER_RGB_COLOR.C_BLUE_FLAG=1;

u16 k,q;

u8 BLINK_2=0;

u8 USER_R=0,USER_G=0,USER_B=0,COLOR_TYPE=0,COLOR_DIR=0;

u8 blink_type=0;

u16 times=0;

RGB_LED_Init();

while(1)

{

if(USART_RX_END)

{   

switch (USART_RX_BUF[5])

{

case 0x33:

PIXEL_NUM=USART_RX_BUF[8];

break;

case LED_ALL_ONOFF:

blink_type=0;

if(USART_RX_BUF[8]==0)

{

data_send[5]=ICON_RED_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_RED_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_GREEN_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_GREEN_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_BLUE_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_BLUE_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

USER_RGB_COLOR.C_BLUE=0;

USER_RGB_COLOR.C_GREEN=0;

USER_RGB_COLOR.C_RED=0;

data_send[5]=ICON_WHITE_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_WHITE_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

USER_RGB_COLOR.C_WHITE=0;

}

else

{

USER_RGB_COLOR.C_BLUE=0x32;

USER_RGB_COLOR.C_GREEN=0x10;

USER_RGB_COLOR.C_RED=0x24;

USER_RGB_COLOR.C_RED_FLAG=0;

USER_RGB_COLOR.C_GREEN_FLAG=0;

USER_RGB_COLOR.C_BLUE_FLAG=0;

 

data_send[5]=ICON_RED_ADDR;

data_send[7]=ICON_ON;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_RED_ADDR;

data_send[7]=0x24;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_GREEN_ADDR;

data_send[7]=ICON_ON;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_GREEN_ADDR;

data_send[7]=0x10;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_BLUE_ADDR;

data_send[7]=ICON_ON;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_BLUE_ADDR;

data_send[7]=0x32;

UART1_Send_Array(data_send,8);

}

RGB_LED_Write_24Bits(USER_RGB_COLOR.C_RED, USER_RGB_COLOR.C_GREEN, USER_RGB_COLOR.C_BLUE);

 

break;

case RED_COLOR:

blink_type=0;

if(USER_RGB_COLOR.C_RED_FLAG==1)

{

if(USART_RX_BUF[8]==0)

break;

}

data_send[5]=ICON_WHITE_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

 

data_send[5]=TEXT_WHITE_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

USER_RGB_COLOR.C_WHITE=0;

 

data_send[5]=SWITCH_ONOFF_ADDR;

data_send[7]=ICON_ON;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_RED_ADDR;

if(USART_RX_BUF[8]>0)data_send[7]=ICON_ON;

else data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

 

USER_RGB_COLOR.C_RED=USART_RX_BUF[8];

USER_RGB_COLOR.C_RED_FLAG=0;

if(USER_RGB_COLOR.C_RED==0)USER_RGB_COLOR.C_RED_FLAG=1;

 

if((USER_RGB_COLOR.C_RED==0x00)&&(USER_RGB_COLOR.C_GREEN==0x00)&&(USER_RGB_COLOR.C_BLUE==0x00)&&(USER_RGB_COLOR.C_WHITE==0x00))

{

data_send[5]=SWITCH_ONOFF_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

}

RGB_LED_Write_24Bits(USER_RGB_COLOR.C_RED, USER_RGB_COLOR.C_GREEN, USER_RGB_COLOR.C_BLUE); // Red

 

break;

case GREEN_COLOR:

blink_type=0;

if(USER_RGB_COLOR.C_GREEN_FLAG==1)

{

if(USART_RX_BUF[8]==0)

break;

}

data_send[5]=ICON_GREEN_ADDR;

if(USART_RX_BUF[8]>0)data_send[7]=ICON_ON;

else data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_WHITE_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_WHITE_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

USER_RGB_COLOR.C_WHITE=0;

 

data_send[5]=SWITCH_ONOFF_ADDR;

data_send[7]=ICON_ON;

UART1_Send_Array(data_send,8);

 

USER_RGB_COLOR.C_GREEN=USART_RX_BUF[8];

USER_RGB_COLOR.C_GREEN_FLAG=0;

if(USER_RGB_COLOR.C_GREEN==0)USER_RGB_COLOR.C_GREEN_FLAG=1;

 

if((USER_RGB_COLOR.C_RED==0x00)&&(USER_RGB_COLOR.C_GREEN==0x00)&&(USER_RGB_COLOR.C_BLUE==0x00)&&(USER_RGB_COLOR.C_WHITE==0x00))

{

data_send[5]=SWITCH_ONOFF_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

}

RGB_LED_Write_24Bits(USER_RGB_COLOR.C_RED, USER_RGB_COLOR.C_GREEN, USER_RGB_COLOR.C_BLUE);  // Green

break;

case BLUE_COLOR:

blink_type=0;

if(USER_RGB_COLOR.C_BLUE_FLAG==1)

{

if(USART_RX_BUF[8]==0)

break;

}

data_send[5]=ICON_BLUE_ADDR;

if(USART_RX_BUF[8]>0)data_send[7]=ICON_ON;

else data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_WHITE_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_WHITE_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

USER_RGB_COLOR.C_WHITE=0;

 

data_send[5]=SWITCH_ONOFF_ADDR;

data_send[7]=ICON_ON;

UART1_Send_Array(data_send,8);

 

USER_RGB_COLOR.C_BLUE=USART_RX_BUF[8];

USER_RGB_COLOR.C_BLUE_FLAG=0;

if(USER_RGB_COLOR.C_BLUE==0)USER_RGB_COLOR.C_BLUE_FLAG=1;

 

if((USER_RGB_COLOR.C_RED==0x00)&&(USER_RGB_COLOR.C_GREEN==0x00)&&(USER_RGB_COLOR.C_BLUE==0x00)&&(USER_RGB_COLOR.C_WHITE==0x00))

{

data_send[5]=SWITCH_ONOFF_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

}

RGB_LED_Write_24Bits(USER_RGB_COLOR.C_RED, USER_RGB_COLOR.C_GREEN, USER_RGB_COLOR.C_BLUE); // Blue

break;

case WHITE_COLOR:

blink_type=0;

data_send[5]=ICON_WHITE_ADDR;

if(USART_RX_BUF[8]>0)data_send[7]=ICON_ON;

else data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_RED_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

 

data_send[5]=TEXT_RED_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_GREEN_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_GREEN_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_BLUE_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_BLUE_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

USER_RGB_COLOR.C_BLUE=0;

USER_RGB_COLOR.C_GREEN=0;

USER_RGB_COLOR.C_RED=0;

USER_RGB_COLOR.C_RED_FLAG=1;

USER_RGB_COLOR.C_GREEN_FLAG=1;

USER_RGB_COLOR.C_BLUE_FLAG=1;

data_send[5]=SWITCH_ONOFF_ADDR;

data_send[7]=ICON_ON;

UART1_Send_Array(data_send,8);

USER_RGB_COLOR.C_WHITE=USART_RX_BUF[8];

 

if((USER_RGB_COLOR.C_RED==0x00)&&(USER_RGB_COLOR.C_GREEN==0x00)&&(USER_RGB_COLOR.C_BLUE==0x00)&&(USER_RGB_COLOR.C_WHITE==0x00))

{

data_send[5]=SWITCH_ONOFF_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

}

RGB_LED_Write_24Bits(USER_RGB_COLOR.C_WHITE, USER_RGB_COLOR.C_WHITE, USER_RGB_COLOR.C_WHITE);

break;

case BLINK1:

blink_type=1;

data_send[5]=ICON_RED_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_RED_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_GREEN_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_GREEN_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_BLUE_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_BLUE_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

USER_RGB_COLOR.C_BLUE=0;

USER_RGB_COLOR.C_GREEN=0;

USER_RGB_COLOR.C_RED=0;

data_send[5]=ICON_WHITE_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_WHITE_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

USER_RGB_COLOR.C_WHITE=0;

 

data_send[5]=SWITCH_ONOFF_ADDR;

data_send[7]=ICON_ON;

UART1_Send_Array(data_send,8);

 

break;

case BLINK2:

blink_type=2;

data_send[5]=ICON_RED_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_RED_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_GREEN_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_GREEN_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_BLUE_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_BLUE_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

USER_RGB_COLOR.C_BLUE=0;

USER_RGB_COLOR.C_GREEN=0;

USER_RGB_COLOR.C_RED=0;

data_send[5]=ICON_WHITE_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_WHITE_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

USER_RGB_COLOR.C_WHITE=0;

 

data_send[5]=SWITCH_ONOFF_ADDR;

data_send[7]=ICON_ON;

UART1_Send_Array(data_send,8);

 

break;

 

case BLINK3:

blink_type=3;

data_send[5]=ICON_RED_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_RED_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_GREEN_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_GREEN_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_BLUE_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_BLUE_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

USER_RGB_COLOR.C_BLUE=0;

USER_RGB_COLOR.C_GREEN=0;

USER_RGB_COLOR.C_RED=0;

// USER_RGB_COLOR.C_RED_FLAG=1;

// USER_RGB_COLOR.C_GREEN_FLAG=1;

// USER_RGB_COLOR.C_BLUE_FLAG=1;

 

data_send[5]=ICON_WHITE_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_WHITE_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

USER_RGB_COLOR.C_WHITE=0;

 

data_send[5]=SWITCH_ONOFF_ADDR;

data_send[7]=ICON_ON;

UART1_Send_Array(data_send,8);

break;

case BLINK4:

blink_type=4;

data_send[5]=ICON_RED_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_RED_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_GREEN_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_GREEN_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

data_send[5]=ICON_BLUE_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_BLUE_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

 

USER_RGB_COLOR.C_BLUE=0;

USER_RGB_COLOR.C_GREEN=0;

USER_RGB_COLOR.C_RED=0;

data_send[5]=ICON_WHITE_ADDR;

data_send[7]=ICON_OFF;

UART1_Send_Array(data_send,8);

data_send[5]=TEXT_WHITE_ADDR;

data_send[7]=0x00;

UART1_Send_Array(data_send,8);

USER_RGB_COLOR.C_WHITE=0;

 

data_send[5]=SWITCH_ONOFF_ADDR;

data_send[7]=ICON_ON;

UART1_Send_Array(data_send,8);

break;

default:

USART_RX_END=0;

USART_RX_STA=0;

break;

}

USART_RX_STA=0;

USART_RX_END=0;

}

else

{

if(blink_type==1)

{

times++;

if(times>=14)

{

times=0;

if(COLOR_DIR==0)

{

if(COLOR_TYPE==0)

{

USER_R++;

USER_G=0;

USER_B=0;

}

else if(COLOR_TYPE==1)

{

USER_R=0;

USER_G++;

USER_B=0;

}

else if(COLOR_TYPE==2)

{

USER_R=0;

USER_G=0;

USER_B++;

}

else if(COLOR_TYPE==3)

{

USER_R++;

USER_G++;

USER_B=0;

}

else if(COLOR_TYPE==4)

{

USER_R=0;

USER_G++;

USER_B++;

}

else if(COLOR_TYPE==5)

{

USER_R++;

USER_G=0;

USER_B++;

}

if((USER_R>=250)||(USER_G>=250)||(USER_B>=250))

{

COLOR_DIR=1;

}

}

else

{

if(COLOR_TYPE==0)

{

USER_R--;

USER_G=0;

USER_B=0;

}

else if(COLOR_TYPE==1)

{

USER_R=0;

USER_G--;

USER_B=0;

}

else if(COLOR_TYPE==2)

{

USER_R=0;

USER_G=0;

USER_B--;

}

else if(COLOR_TYPE==3)

{

USER_R--;

USER_G--;

USER_B=0;

}

else if(COLOR_TYPE==4)

{

USER_R=0;

USER_G--;

USER_B--;

}

else if(COLOR_TYPE==5)

{

USER_R--;

USER_G=0;

USER_B--;

}

if((USER_R==0x02)||(USER_G==0x02)||(USER_B==0x02))

{

COLOR_DIR=0;

COLOR_TYPE++;

if(COLOR_TYPE>5)

COLOR_TYPE=0;

}

}

RGB_LED_Write_24Bits(USER_R,USER_G,USER_B);

}

delay_ms(1);

}

else if(blink_type==2)

{

k++;

if(k>=150)

{

k=0;

q=200;

{

BLINK_2++;

if(BLINK_2>8)BLINK_2=0;

}

if(BLINK_2==0)

RGB_LED_Write_24Bits(q,0,0);

else if(BLINK_2==1)

RGB_LED_Write_24Bits(0,q,0);

else if(BLINK_2==2)

RGB_LED_Write_24Bits(0,0,q);

else if(BLINK_2==3)

RGB_LED_Write_24Bits(q,q,0);

else if(BLINK_2==4)

RGB_LED_Write_24Bits(0,q,q);

else if(BLINK_2==5)

RGB_LED_Write_24Bits(q,0,q);

else if(BLINK_2==6)

RGB_LED_Write_24Bits(q-100,q,0);

else if(BLINK_2==7)

RGB_LED_Write_24Bits(0,q-80,q);

else if(BLINK_2==8)

RGB_LED_Write_24Bits(q,0,q-120);

else if(BLINK_2==9)

RGB_LED_Write_24Bits(40,q-100,q-70);

else if(BLINK_2==10)

RGB_LED_Write_24Bits(q,100,q-80);

 

}

delay_ms(1);

}

else if(blink_type==3)

{

k++;

if(k>=1000)

{

k=0;

{

BLINK_2++;

if(BLINK_2>5)BLINK_2=0;

}

{

if(BLINK_2==0)

RGB_LED_Write_24Bits(q,0,0);

else if(BLINK_2==1)

RGB_LED_Write_24Bits(0,q,0);

else if(BLINK_2==2)

RGB_LED_Write_24Bits(0,0,q);

else if(BLINK_2==3)

RGB_LED_Write_24Bits(q,q,0);

else if(BLINK_2==4)

RGB_LED_Write_24Bits(0,q,q);

else if(BLINK_2==5)

RGB_LED_Write_24Bits(q,0,q);

}

}

delay_ms(1);

}

else if(blink_type==4)

{

k++;

if(k>=500)

{

k=0;

q=0;

BLINK_2++;

if(BLINK_2>5)BLINK_2=0;

}

q++;

if(q>=250)q=0;

if(BLINK_2==0)

RGB_LED_Write_24Bits(q,0,0);

else if(BLINK_2==1)

RGB_LED_Write_24Bits(0,q,0);

else if(BLINK_2==2)

RGB_LED_Write_24Bits(0,0,q);

else if(BLINK_2==3)

RGB_LED_Write_24Bits(q,q,0);

else if(BLINK_2==4)

RGB_LED_Write_24Bits(0,q,q);

else if(BLINK_2==5)

RGB_LED_Write_24Bits(q,0,q);

delay_ms(1);

}

else

{

 

 

}

}

} 

}

Video demo