目录
一、所选模块
液晶模块选择(淘宝上均有售卖)
模块引脚
二、嵌入式单片机型号
三、接线表设计
四、开发环境版本说明
五、标准库实现
六、HAL库实现
七、完整工程(内含标准库和HAL库源码)
代码链接
一、所选模块
液晶模块选择(淘宝上均有售卖)
1.8寸液晶屏 LCD SPI串口显示屏模块 TFT彩屏
模块引脚
二、嵌入式单片机型号
本博客选用的单片机型号:STM32F103C8T6
该款单片机应用就多,相对性价比较高。
三、接线表设计
由于液晶模块采用的是SPI通信,但这里均使用模拟SPI的方式进行通信,实现液晶显示(后面博客会使用STM32自带的SPI功能实现数据传输)。
TFT真彩屏 液晶模块 | STM32F103C8T6 |
GND | 电源地 |
VCC | 接5V或3.3v电源 |
SCL | PA6(SCL) |
SDA | PA7(SDA) |
RES | PB0 |
DC | PB1 |
CS | PB10 |
BL | PB11 |
因为液晶模块主要用于显示功能,而且是模拟SPI通信,这里的所以的IO口均设置成推挽输出模式。引脚接线是依据需要修改的,但需要大家修改完全,不然不能成功。
四、开发环境版本说明
标准库的开发环境:
HAL库开发环境:
STMCUBEMX、KEIL5
五、标准库实现
由于工程文件较多,只给出部分核心代码,供大家参考,博文最后会有全套代码给大家。
main.c
#include "stm32f10x.h"
#include "delay.h"
#include "QDTFT_demo.h"
#include "Lcd_Driver.h"
#include "GUI.h"
#include "stdio.h"
#include "string.h"
int main(void)
{
SystemInit(); //System init.
delay_init(72);//Delay init.
Lcd_Init();
LCD_BL_SET;//通过IO控制背光亮
while(1)
{
QDTFT_Test_Demo();
}
}
Lcd_Driver.c
//
//本程序只供学习使用,未经作者许可,不得用于其它任何用途
//中景园电子
//店铺地址:http://shop73023976.taobao.com/?spm=2013.1.0.0.M4PqC2
//
// 文 件 名 : main.c
// 版 本 号 : v2.0
// 作 者 : HuangKai
// 生成日期 : 2014-0101
// 最近修改 :
// 功能描述 : 1.8寸LCD 4接口演示例程(STM32系列)
/******************************************************************************
//本程序适用与STM32F103C8
// GND 电源地
// VCC 接5V或3.3v电源
// SCL 接PA6(SCL)
// SDA 接PA7(SDA)
// RES 接PB0
// DC 接PB1
// CS 接PB10
// BL 接PB11
*******************************************************************************/
// 修改历史 :
// 日 期 :
// 作 者 : HuangKai
// 修改内容 : 创建文件
//版权所有,盗版必究。
//Copyright(C) 中景园电子2014/3/16
//All rights reserved
//******************************************************************************/
#include "stm32f10x.h"
#include "Lcd_Driver.h"
#include "LCD_Config.h"
#include "delay.h"
//液晶IO初始化配置
void LCD_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB ,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0| GPIO_Pin_1| GPIO_Pin_10| GPIO_Pin_11;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA ,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6| GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
//向SPI总线传输一个8位数据
void SPI_WriteData(u8 Data)
{
unsigned char i=0;
for(i=8;i>0;i--)
{
if(Data&0x80)
LCD_SDA_SET; //输出数据
else LCD_SDA_CLR;
LCD_SCL_CLR;
LCD_SCL_SET;
Data<<=1;
}
}
//向液晶屏写一个8位指令
void Lcd_WriteIndex(u8 Index)
{
//SPI 写命令时序开始
LCD_CS_CLR;
LCD_DC_CLR;
SPI_WriteData(Index);
LCD_CS_SET;
}
//向液晶屏写一个8位数据
void Lcd_WriteData(u8 Data)
{
LCD_CS_CLR;
LCD_DC_SET;
SPI_WriteData(Data);
LCD_CS_SET;
}
//向液晶屏写一个16位数据
void LCD_WriteData_16Bit(u16 Data)
{
LCD_CS_CLR;
LCD_DC_SET;
SPI_WriteData(Data>>8); //写入高8位数据
SPI_WriteData(Data); //写入低8位数据
LCD_CS_SET;
}
void Lcd_WriteReg(u8 Index,u8 Data)
{
Lcd_WriteIndex(Index);
Lcd_WriteData(Data);
}
void Lcd_Reset(void)
{
LCD_RST_CLR;
delay_ms(100);
LCD_RST_SET;
delay_ms(50);
}
//LCD Init For 1.44Inch LCD Panel with ST7735R.
void Lcd_Init(void)
{
LCD_GPIO_Init();
Lcd_Reset(); //Reset before LCD Init.
//LCD Init For 1.44Inch LCD Panel with ST7735R.
Lcd_WriteIndex(0x11);//Sleep exit
delay_ms (120);
//ST7735R Frame Rate
Lcd_WriteIndex(0xB1);
Lcd_WriteData(0x01);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x2D);
Lcd_WriteIndex(0xB2);
Lcd_WriteData(0x01);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x2D);
Lcd_WriteIndex(0xB3);
Lcd_WriteData(0x01);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x2D);
Lcd_WriteData(0x01);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x2D);
Lcd_WriteIndex(0xB4); //Column inversion
Lcd_WriteData(0x07);
//ST7735R Power Sequence
Lcd_WriteIndex(0xC0);
Lcd_WriteData(0xA2);
Lcd_WriteData(0x02);
Lcd_WriteData(0x84);
Lcd_WriteIndex(0xC1);
Lcd_WriteData(0xC5);
Lcd_WriteIndex(0xC2);
Lcd_WriteData(0x0A);
Lcd_WriteData(0x00);
Lcd_WriteIndex(0xC3);
Lcd_WriteData(0x8A);
Lcd_WriteData(0x2A);
Lcd_WriteIndex(0xC4);
Lcd_WriteData(0x8A);
Lcd_WriteData(0xEE);
Lcd_WriteIndex(0xC5); //VCOM
Lcd_WriteData(0x0E);
Lcd_WriteIndex(0x36); //MX, MY, RGB mode
Lcd_WriteData(0xC0);
//ST7735R Gamma Sequence
Lcd_WriteIndex(0xe0);
Lcd_WriteData(0x0f);
Lcd_WriteData(0x1a);
Lcd_WriteData(0x0f);
Lcd_WriteData(0x18);
Lcd_WriteData(0x2f);
Lcd_WriteData(0x28);
Lcd_WriteData(0x20);
Lcd_WriteData(0x22);
Lcd_WriteData(0x1f);
Lcd_WriteData(0x1b);
Lcd_WriteData(0x23);
Lcd_WriteData(0x37);
Lcd_WriteData(0x00);
Lcd_WriteData(0x07);
Lcd_WriteData(0x02);
Lcd_WriteData(0x10);
Lcd_WriteIndex(0xe1);
Lcd_WriteData(0x0f);
Lcd_WriteData(0x1b);
Lcd_WriteData(0x0f);
Lcd_WriteData(0x17);
Lcd_WriteData(0x33);
Lcd_WriteData(0x2c);
Lcd_WriteData(0x29);
Lcd_WriteData(0x2e);
Lcd_WriteData(0x30);
Lcd_WriteData(0x30);
Lcd_WriteData(0x39);
Lcd_WriteData(0x3f);
Lcd_WriteData(0x00);
Lcd_WriteData(0x07);
Lcd_WriteData(0x03);
Lcd_WriteData(0x10);
Lcd_WriteIndex(0x2a);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0x7f);
Lcd_WriteIndex(0x2b);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0x9f);
Lcd_WriteIndex(0xF0); //Enable test command
Lcd_WriteData(0x01);
Lcd_WriteIndex(0xF6); //Disable ram power save mode
Lcd_WriteData(0x00);
Lcd_WriteIndex(0x3A); //65k mode
Lcd_WriteData(0x05);
Lcd_WriteIndex(0x29);//Display on
}
/*************************************************
函数名:LCD_Set_Region
功能:设置lcd显示区域,在此区域写点数据自动换行
入口参数:xy起点和终点
返回值:无
*************************************************/
void Lcd_SetRegion(u16 x_start,u16 y_start,u16 x_end,u16 y_end)
{
Lcd_WriteIndex(0x2a);
Lcd_WriteData(0x00);
Lcd_WriteData(x_start+2);
Lcd_WriteData(0x00);
Lcd_WriteData(x_end+2);
Lcd_WriteIndex(0x2b);
Lcd_WriteData(0x00);
Lcd_WriteData(y_start+1);
Lcd_WriteData(0x00);
Lcd_WriteData(y_end+1);
Lcd_WriteIndex(0x2c);
}
/*************************************************
函数名:LCD_Set_XY
功能:设置lcd显示起始点
入口参数:xy坐标
返回值:无
*************************************************/
void Lcd_SetXY(u16 x,u16 y)
{
Lcd_SetRegion(x,y,x,y);
}
/*************************************************
函数名:LCD_DrawPoint
功能:画一个点
入口参数:无
返回值:无
*************************************************/
void Gui_DrawPoint(u16 x,u16 y,u16 Data)
{
Lcd_SetRegion(x,y,x+1,y+1);
LCD_WriteData_16Bit(Data);
}
/*****************************************
函数功能:读TFT某一点的颜色
出口参数:color 点颜色值
******************************************/
unsigned int Lcd_ReadPoint(u16 x,u16 y)
{
unsigned int Data;
Lcd_SetXY(x,y);
//Lcd_ReadData();//丢掉无用字节
//Data=Lcd_ReadData();
Lcd_WriteData(Data);
return Data;
}
/*************************************************
函数名:Lcd_Clear
功能:全屏清屏函数
入口参数:填充颜色COLOR
返回值:无
*************************************************/
void Lcd_Clear(u16 Color)
{
unsigned int i,m;
Lcd_SetRegion(0,0,X_MAX_PIXEL-1,Y_MAX_PIXEL-1);
Lcd_WriteIndex(0x2C);
for(i=0;i<X_MAX_PIXEL;i++)
{
for(m=0;m<Y_MAX_PIXEL;m++)
{
LCD_WriteData_16Bit(Color);
}
}
}
实现效果:
六、HAL库实现
CubeMX配置引脚为output,然后修改别名,如下:
时钟配置为32MHz,其它其实也可以,无所谓的。
main.c
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
/* USER CODE BEGIN 2 */
Lcd_Init();
HAL_GPIO_WritePin(GPIOB, BL_Pin, GPIO_PIN_SET);//通过IO控制背光亮
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
QDTFT_Test_Demo();
}
/* USER CODE END 3 */
}
lcddriver.c
#include "main.h"
#define X_MAX_PIXEL 128
#define Y_MAX_PIXEL 160
//向SPI总线传输一个8位数据
void SPI_WriteData(uint8_t Data)
{
unsigned char i=0;
for(i=8;i>0;i--)
{
if(Data&0x80)
HAL_GPIO_WritePin(GPIOA, SDA_Pin, GPIO_PIN_SET); //输出数据
else HAL_GPIO_WritePin(GPIOA, SDA_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(GPIOA, SCL_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(GPIOA, SCL_Pin, GPIO_PIN_SET);
Data<<=1;
}
}
//向液晶屏写一个8位指令
void Lcd_WriteIndex(uint8_t Index)
{
//SPI 写命令时序开始
HAL_GPIO_WritePin(CS_GPIO_Port, CS_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(DC_GPIO_Port, DC_Pin, GPIO_PIN_RESET);
SPI_WriteData(Index);
HAL_GPIO_WritePin(CS_GPIO_Port, CS_Pin, GPIO_PIN_SET);
}
//向液晶屏写一个8位数据
void Lcd_WriteData(uint8_t Data)
{
HAL_GPIO_WritePin(CS_GPIO_Port, CS_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(DC_GPIO_Port, DC_Pin, GPIO_PIN_SET);
SPI_WriteData(Data);
HAL_GPIO_WritePin(CS_GPIO_Port, CS_Pin, GPIO_PIN_SET);
}
//向液晶屏写一个16位数据
void LCD_WriteData_16Bit(uint16_t Data)
{
uint8_t temp = (uint8_t)(Data>>8);
HAL_GPIO_WritePin(CS_GPIO_Port, CS_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(DC_GPIO_Port, DC_Pin, GPIO_PIN_SET);
SPI_WriteData(temp); //写入高8位数据
temp = (uint8_t)(Data);
SPI_WriteData(temp); //写入低8位数据
HAL_GPIO_WritePin(CS_GPIO_Port, CS_Pin, GPIO_PIN_SET);
}
void Lcd_WriteReg(uint8_t Index,uint8_t Data)
{
Lcd_WriteIndex(Index);
Lcd_WriteData(Data);
}
void Lcd_Reset(void)
{
HAL_GPIO_WritePin(RES_GPIO_Port, RES_Pin, GPIO_PIN_RESET);
HAL_Delay(100);
HAL_GPIO_WritePin(RES_GPIO_Port, RES_Pin, GPIO_PIN_SET);
HAL_Delay(50);
}
//LCD Init For 1.44Inch LCD Panel with ST7735R.
void Lcd_Init(void)
{
Lcd_Reset(); //Reset before LCD Init.
//LCD Init For 1.44Inch LCD Panel with ST7735R.
Lcd_WriteIndex(0x11);//Sleep exit
HAL_Delay(120);
//ST7735R Frame Rate
Lcd_WriteIndex(0xB1);
Lcd_WriteData(0x01);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x2D);
Lcd_WriteIndex(0xB2);
Lcd_WriteData(0x01);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x2D);
Lcd_WriteIndex(0xB3);
Lcd_WriteData(0x01);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x2D);
Lcd_WriteData(0x01);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x2D);
Lcd_WriteIndex(0xB4); //Column inversion
Lcd_WriteData(0x07);
//ST7735R Power Sequence
Lcd_WriteIndex(0xC0);
Lcd_WriteData(0xA2);
Lcd_WriteData(0x02);
Lcd_WriteData(0x84);
Lcd_WriteIndex(0xC1);
Lcd_WriteData(0xC5);
Lcd_WriteIndex(0xC2);
Lcd_WriteData(0x0A);
Lcd_WriteData(0x00);
Lcd_WriteIndex(0xC3);
Lcd_WriteData(0x8A);
Lcd_WriteData(0x2A);
Lcd_WriteIndex(0xC4);
Lcd_WriteData(0x8A);
Lcd_WriteData(0xEE);
Lcd_WriteIndex(0xC5); //VCOM
Lcd_WriteData(0x0E);
Lcd_WriteIndex(0x36); //MX, MY, RGB mode
Lcd_WriteData(0xC0);
//ST7735R Gamma Sequence
Lcd_WriteIndex(0xe0);
Lcd_WriteData(0x0f);
Lcd_WriteData(0x1a);
Lcd_WriteData(0x0f);
Lcd_WriteData(0x18);
Lcd_WriteData(0x2f);
Lcd_WriteData(0x28);
Lcd_WriteData(0x20);
Lcd_WriteData(0x22);
Lcd_WriteData(0x1f);
Lcd_WriteData(0x1b);
Lcd_WriteData(0x23);
Lcd_WriteData(0x37);
Lcd_WriteData(0x00);
Lcd_WriteData(0x07);
Lcd_WriteData(0x02);
Lcd_WriteData(0x10);
Lcd_WriteIndex(0xe1);
Lcd_WriteData(0x0f);
Lcd_WriteData(0x1b);
Lcd_WriteData(0x0f);
Lcd_WriteData(0x17);
Lcd_WriteData(0x33);
Lcd_WriteData(0x2c);
Lcd_WriteData(0x29);
Lcd_WriteData(0x2e);
Lcd_WriteData(0x30);
Lcd_WriteData(0x30);
Lcd_WriteData(0x39);
Lcd_WriteData(0x3f);
Lcd_WriteData(0x00);
Lcd_WriteData(0x07);
Lcd_WriteData(0x03);
Lcd_WriteData(0x10);
Lcd_WriteIndex(0x2a);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0x7f);
Lcd_WriteIndex(0x2b);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0x9f);
Lcd_WriteIndex(0xF0); //Enable test command
Lcd_WriteData(0x01);
Lcd_WriteIndex(0xF6); //Disable ram power save mode
Lcd_WriteData(0x00);
Lcd_WriteIndex(0x3A); //65k mode
Lcd_WriteData(0x05);
Lcd_WriteIndex(0x29);//Display on
}
/*************************************************
函数名:LCD_Set_Region
功能:设置lcd显示区域,在此区域写点数据自动换行
入口参数:xy起点和终点
返回值:无
*************************************************/
void Lcd_SetRegion(uint16_t x_start,uint16_t y_start,uint16_t x_end,uint16_t y_end)
{
Lcd_WriteIndex(0x2a);
Lcd_WriteData(0x00);
Lcd_WriteData(x_start+2);
Lcd_WriteData(0x00);
Lcd_WriteData(x_end+2);
Lcd_WriteIndex(0x2b);
Lcd_WriteData(0x00);
Lcd_WriteData(y_start+1);
Lcd_WriteData(0x00);
Lcd_WriteData(y_end+1);
Lcd_WriteIndex(0x2c);
}
/*************************************************
函数名:LCD_Set_XY
功能:设置lcd显示起始点
入口参数:xy坐标
返回值:无
*************************************************/
void Lcd_SetXY(uint16_t x,uint16_t y)
{
Lcd_SetRegion(x,y,x,y);
}
/*************************************************
函数名:LCD_DrawPoint
功能:画一个点
入口参数:无
返回值:无
*************************************************/
void Gui_DrawPoint(uint16_t x,uint16_t y,uint16_t Data)
{
Lcd_SetRegion(x,y,x+1,y+1);
LCD_WriteData_16Bit(Data);
}
/*****************************************
函数功能:读TFT某一点的颜色
出口参数:color 点颜色值
******************************************/
unsigned int Lcd_ReadPoint(uint16_t x,uint16_t y)
{
unsigned int Data;
Lcd_SetXY(x,y);
//Lcd_ReadData();//丢掉无用字节
//Data=Lcd_ReadData();
Lcd_WriteData(Data);
return Data;
}
/*************************************************
函数名:Lcd_Clear
功能:全屏清屏函数
入口参数:填充颜色COLOR
返回值:无
*************************************************/
void Lcd_Clear(uint16_t Color)
{
unsigned int i,m;
Lcd_SetRegion(0,0,X_MAX_PIXEL-1,Y_MAX_PIXEL-1);
Lcd_WriteIndex(0x2C);
for(i=0;i<X_MAX_PIXEL;i++)
for(m=0;m<Y_MAX_PIXEL;m++)
{
LCD_WriteData_16Bit(Color);
}
}
实现效果:
实现效果与标准库实现效果一致。
七、完整工程(内含标准库和HAL库源码)
代码链接
STM32实现1.8寸液晶屏LCDSPI串口显示屏模块TFT彩屏(标准库和HAL库实现)资源-CSDN文库
吾芯电子