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.

This project is to achieve RGB lamp control by STONE display module:

Control the color of the light
Control the brightness of the light
Control the four modes of the lamp

STONE control TFT-LCD display module

The STONE STVC070WT-01 is a 7-inch display module with a resolution of 800*480. This display module can be purchased from the official website of STONE. The communication mode is uart-rs232 and uart-ttl. The development method is very simple, MCU only needs to send instructions to the STONE display module to control the display content through UART. In the same principle, when the user touches the STONE display module, the display module also sends relevant instructions to MCU through UART, and MCU then controls the device (WS2812B_RGB lamp in this project).

7 inches STONE STVC070WT-01

The following picture shows the package and accessories I received:

LIST：

Connection and interface
USB to TTL adapter plate
USB flash drive (including development information)
Micro USB cable
USB transfer board
STONE STVC070WT-01 display module
12V power adapter

The function of the STONE control display module

STVC070WT-01 is a TFT display and touch controller.It includes a processor, control program, driver, flash memory, RS232/RS485/TTL port, touch screen, power supply, etc. It is a powerful display system
The operating system is simple and can be controlled by any single-chip microcomputer.
STVC070WT-01 can be used to perform all basic functions, such as text display, image display, curve display, touch function, video and audio function, etc.

built-in Cortex CPU and driver
can be controlled by any single-chip microcomputer
show pictures/text/curves
65536 color TFT display
can be touched
RS232/ RS485/ TTL UART interface and USB port
wide voltage range

How the STONE TFT-LCD control display works

The TFT-LCD module communicates with the customer’s MCU through commands (hexadecimal code), and the MCU then controls the connected device to work according to the commands received.

The development steps for the STONE control display module

Use STONE’s TFT-LCD module in only 3 steps:

Design a beautiful set of graphical user interfaces.
Connect directly to the client’s MCU via RS232, RS485, or TTL.
Write a simple program, by the MCU command control TFT-LCD module. (hex).

TFT LCD module serial command frame consists of 5 data blocks, all serial commands or data are expressed in hexadecimal format. Data transfer in MSB mode. For example, for 0x1234, first send 0x12, then 0x34.

Application scenarios of the STONE TFT-LCD control display module

The STONE control display module is widely used in various industrial fields, such as Medical beauty equipment, construction machinery, and vehicle equipment, electronic instruments, industrial control system, power industry, civil electronic equipment, automation equipment, transportation.

UI image design for STONE control TFT-LCD

The interface designed by using Photoshop is as follows:

The first picture is the main screen picture, and the second picture is the effect when the button is pressed.

Use STONE TOOL box to generate LCD module configuration files

Click the button indicated by the arrow to generate the configuration file, and then download the configuration file into the display module to display the UI interface we designed.

Wiring and welding

Having completed the touch display control above, we can focus on the development of MCU and WS2812B_RGB lamps.
But before that, we need to do some welding.

Wiring diagram

The power adapter is 12V, which needs to power the STONE STVC070WT-01 display module and to power the MCU module and WS2812B_RGB lamp by lowering the voltage to 5v through the dc-dc buck.

Accessories used in the project

Main accessories are

STM32F103C8R6 module
Dc-dc buck module
UART connection

Since the communication mode of STONE STVC070WT-01 is uart-TTL by default, we do not need the RS232 interface for the connection. Remove the RS232 interface:

welding

Weld these parts together and the effect is as follows:

There are 3 interfaces, as shown above.

When this part is ready, you can program the MCU. But before we do that, we need to determine how the WS2812B_RGB lamp will be driven.

WS2812B

WS2812B is actually an RGB driver chip. The control circuit and RGB chip are integrated into a 5050 package of components to form a complete pixel point. Built-in signal shaping circuit, any pixel received the signal after waveform shaping output, to ensure that the waveform distortion of the circuit accumulation. Built-in power-on reset and power off reset circuit. The color of each pixel can achieve 256 levels of brightness display, complete the full-color display of 16777216 colors, Serial interface, can complete data reception and decoding through a signal line. The transmission distance between any two points is no more than 5 meters without any additional circuit. When the refresh rate is 30 frames/SEC, the cascade number of low-speed mode should be no less than 512 points, and that of high-speed mode should be no less than 1024 points. Data transmission speed up to 8Kbps.The color of the light is highly consistent and cost-effective.

DOUT: Data output, control data signal output
DIN: Data input, control data signal input
VCC: Logic power supply, control circuit power supply
NC
VDD: Power supply, LED power supply
VSS: GND

Application field

LED full-color light string, LED full-color module, LED full-color soft light bar hard light bar, LED guardrail tube, LED point light source, LED pixel screen, LED special-shaped screen, various electronic products, electrical equipment running horse light.

Driver for WS2812

The driving mode of WS2812 is simple. MCU only needs a signal line to complete the brightness and color control.

STM32 driver code

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

#include "usart.h"

#include "delay.h"

uint8_t PIXEL_NUM=60;

#define RGB_LED GPIO_Pin_7

#define RGB_LED_HIGH (GPIO_SetBits(GPIOA,RGB_LED))

#define RGB_LED_LOW (GPIO_ResetBits(GPIOA,RGB_LED))

void RGB_LED_Init(void)

{

GPIO_InitTypeDef GPIO_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOA, &GPIO_InitStructure);

GPIO_SetBits(GPIOA,GPIO_Pin_7);

}

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

//

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

void RGB_LED_Write0(void)

{

RGB_LED_HIGH;

__nop();__nop();__nop();__nop();__nop();__nop();

RGB_LED_LOW;

__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();

__nop();__nop();

}

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

//

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

void RGB_LED_Write1(void)

{

RGB_LED_HIGH;

__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();

__nop();__nop();

RGB_LED_LOW;

__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();__nop();

__nop();__nop();

}

void RGB_LED_Reset(void)

{

RGB_LED_LOW;

delay_us(80);

}

void RGB_LED_Write_Byte(uint8_t byte)

{

uint8_t i;

for(i=0;i<8;i++)

{

if(byte&0x80)

{

RGB_LED_Write1();

}

else

{

RGB_LED_Write0();

}

byte <<= 1;

}

void RGB_LED_Write_24Bits(uint8_t red,uint8_t green,uint8_t blue)

{

uint16_t i=0;

for( i=0;i<pixel_num;i++)< span=""></pixel_num;i++)<>

{

RGB_LED_Write_Byte(green);

RGB_LED_Write_Byte(red);

RGB_LED_Write_Byte(blue);

}

void RGB_LED_Write_24Bits_Efect(uint8_t red,uint8_t green,uint8_t blue)

{

RGB_LED_Write_Byte(green);

RGB_LED_Write_Byte(red);

RGB_LED_Write_Byte(blue);

}

void RGB_LED_Red(void)

{

uint8_t i;

//4?LED???

for(i=0;i<pixel_num;i++)< span=""></pixel_num;i++)<>

{

RGB_LED_Write_24Bits(0, 0xff, 0);

}

void RGB_LED_Green(void)

{

uint8_t i;

for(i=0;i<pixel_num;i++)< span=""></pixel_num;i++)<>

{

RGB_LED_Write_24Bits(0xff, 0, 0);

}

void RGB_LED_Blue(void)

{

uint8_t i;

for(i=0;i<pixel_num;i++)< span=""></pixel_num;i++)<>

{

RGB_LED_Write_24Bits(0x40, 0x50, 0);

}

#ifndef __WS2812_H

#define __WS2812_H

#include "stm32f10x.h"

//#define PIXEL_NUM 120

extern uint8_t PIXEL_NUM;

#define WS_HIGH 0XF8

#define WS_LOW 0XE0

#define RED_COLOR 0x07

#define GREEN_COLOR 0x08

#define BLUE_COLOR 0x09

#define WHITE_COLOR 0x06

#define LED_ALL_ONOFF 0x01

#define BLINK1 0x0A

#define BLINK2 0x0B

#define BLINK3 0x0C

#define BLINK4 0x0D

#define LightOn 0x00

#define LightOff 0x01

void RGB_LED_Reset(void);

void RGB_LED_Init(void);

void RGB_LED_Reset(void);

void RGB_LED_Write_24Bits(uint8_t red,uint8_t green,uint8_t blue);

void RGB_LED_Write_24Bits_effect(uint8_t red,uint8_t green,uint8_t blue);

uint32_t ws281x_wheel(uint8_t wheelPos);

void RGB_LED_Write_24Bits_Efect(uint8_t green,uint8_t red,uint8_t blue);

#endif /* __WS2812_H */

STM32F103C8T6

There are many materials and development documents about this chip on the Internet. Here is a brief introduction of this chip.
This is the development board of STM32F103C8T6, the purchase link:
https://www.st.com/en/microcontrollers-microprocessors/stm32f103c8.html

I’m not going to say much about this chip. The chip download code is j-link, as shown below:

This is a simple version of j-link, only supporting SWD mode debugging and download, not supporting JTAG. But for the development of the STM32 chip, SWD debugging method is enough.

Download the code to the STM32 chip.

Ensure the correct wiring of j-link and STM32F103C8T6, and then the chip can be identified in the KEIL development environment:

Click the download button to download the code to the chip:

STM32 code

The buttons and text in the display screen have corresponding addresses. In this project, the addresses of the display screen components are as follows:

#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<num)< span=""></num)<>
{
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
{
}
}
}
}

Finally, the code is downloaded into the STM32 chip, and the completed circuit board is connected to the control display screen, and the power supply is guaranteed to be stable. Then the brightness and color of the RGB lamp can be controlled by the STONE control display module.
The final hardware connection diagram

Control WS2812B_RGB Lamp by STONE Display Module

This project is to achieve RGB lamp control by STONE display module:

STONE control TFT-LCD display module

7 inches STONE STVC070WT-01

The function of the STONE control display module

How the STONE TFT-LCD control display works

The development steps for the STONE control display module

Application scenarios of the STONE TFT-LCD control display module

UI image design for STONE control TFT-LCD

Use STONE TOOL box to generate LCD module configuration files

Wiring and welding

Wiring diagram

Accessories used in the project

Main accessories are

welding

WS2812B

Application field

Driver for WS2812

STM32 driver code

STM32F103C8T6

Download the code to the STM32 chip.

STM32 code

Running effect