1.介绍TFT
2.Cube配置
该屏幕是用SPI通信的，但没有MISO引脚，意思是说该屏幕只能接收数据，但无法读取里面的数据，理论上说四线就能启动，但我弄不出，只能用六线。
在Cube上只要开启六个GPIO口作为通信引脚就行了。
3.驱动程序
如果都是用ST7735芯片驱动的，不管屏幕是多少寸的，都能驱动
lcd.c
#include "lcd.h"#include "stm32f4xx.h"
//默认为竖屏
//_lcd_dev lcddev;
//SPI_HandleTypedef hSPIx;
//画笔颜色,背景颜色
uint16_t POINT_COLOR = 0x0000,BACK_COLOR = 0xFFFF; _lcd_dev lcddev_2;SPI_HandleTypedef hSPIx;void vSPI_LCD_Handle_Init(void)
{
//引脚 Pin： hSPIx.pSCK_Port = SPI_SCK_GPIO_Port; //SCK
hSPIx.uSCK_Pin = SPI_SCK_Pin; hSPIx.pMOSI_Port = SPI_SDA_GPIO_Port; //MOSI
hSPIx.uMOSI_Pin = SPI_SDA_Pin;
}//STM32_模拟SPI写一个字节数据底层函数
void SPIv_WriteData(uint8_t Data)
{
unsigned char i=;
for ( i = ; i > ; i --)
{
LCD_SCL_CLR;
if ( Data & 0x80)
{ LCD_SDA_SET; }
//输出数据
else
{
LCD_SDA_CLR;
}
LCD_SCL_SET;
Data <<= ;
}}
//向液晶屏总线写入写8位数据
void TFT_WR_DATA(uint8_t data)
{
LCD_CS_CLR; //软件控制片选信号
LCD_RS_SET;
SPIv_WriteData(data);
LCD_CS_SET; //软件控制片选信号
}
// 向液晶屏总线写入写16位指令
void TFT_WR_REG(uint16_t data)
{
LCD_CS_CLR; //软件控制片选信号
LCD_RS_CLR;
SPIv_WriteData(data);
LCD_CS_SET; //软件控制片选信号
}
//写寄存器数据
void TFT_WriteReg(uint16_t LCD_Reg, uint16_t LCD_RegValue)
{
TFT_WR_REG(LCD_Reg);
TFT_WR_DATA(LCD_RegValue);
}
//开始写GRAM 在给液晶屏传送RGB数据前，应该发送写GRAM指令
void TFT_WriteRAM_Prepare(void)
{
TFT_WR_REG(lcddev_2.wramcmd);
}void TFT_RESET(void) //液晶屏复位
{ LCD_RST_SET;
TFT_WR_REG(0x01);
HAL_Delay();
}
//设置LCD参数
//方便进行横竖屏模式切换
void TFT_SetParam(void)
{
lcddev_2.wramcmd=0x2C; lcddev_2.dir=;//竖屏
lcddev_2.width=;
lcddev_2.height=;
lcddev_2.setxcmd=0x2A;
lcddev_2.setycmd=0x2B;
TFT_WriteReg(0x36,0xC8);}void TFT_SetWindows(uint16_t xStar, uint16_t yStar,uint16_t xEnd,uint16_t yEnd)
{ TFT_WR_REG(lcddev_2.setxcmd);
TFT_WR_DATA(xStar>>);
TFT_WR_DATA(0x00FF&xStar+);
TFT_WR_DATA(xEnd>>);
TFT_WR_DATA(0x00FF&xEnd+); TFT_WR_REG(lcddev_2.setycmd);
TFT_WR_DATA(yStar>>);
TFT_WR_DATA(0x00FF&yStar+);
TFT_WR_DATA(yEnd>>);
TFT_WR_DATA(0x00FF&yEnd+); TFT_WriteRAM_Prepare(); //开始写入GRAM
}
// 8位总线下如何写入一个16位数据
void TFT_WR_DATA_16Bit(uint16_t data)
{
LCD_CS_CLR;
LCD_RS_SET; SPIv_WriteData(data>>);
SPIv_WriteData(data); LCD_CS_SET;
}
// LCD全屏填充清屏函数
void TFT_Clear(uint16_t Color)
{
uint16_t i,j;
TFT_SetWindows(, , lcddev_2.width-, lcddev_2.height-); for (i = ; i < lcddev_2.width; i ++)
{
for (j = ; j < lcddev_2.height; j ++)
TFT_WR_DATA_16Bit(Color); //写入数据
}
}
void TFT_Init(void)
{ TFT_RESET(); //液晶屏复位//************* Start Initial Sequence **********//
//开始初始化液晶屏
TFT_WR_REG(0x11);//Sleep exit
HAL_Delay();
//ST7735R Frame Rate
TFT_WR_REG(0xB1);
TFT_WR_DATA(0x01);
TFT_WR_DATA(0x2C);
TFT_WR_DATA(0x2D); TFT_WR_REG(0xB2);
TFT_WR_DATA(0x01);
TFT_WR_DATA(0x2C);
TFT_WR_DATA(0x2D); TFT_WR_REG(0xB3);
TFT_WR_DATA(0x01);
TFT_WR_DATA(0x2C);
TFT_WR_DATA(0x2D);
TFT_WR_DATA(0x01);
TFT_WR_DATA(0x2C);
TFT_WR_DATA(0x2D); TFT_WR_REG(0xB4); //Column inversion
TFT_WR_DATA(0x07); //ST7735R Power Sequence
TFT_WR_REG(0xC0);
TFT_WR_DATA(0xA2);
TFT_WR_DATA(0x02);
TFT_WR_DATA(0x84);
TFT_WR_REG(0xC1);
TFT_WR_DATA(0xC5); TFT_WR_REG(0xC2);
TFT_WR_DATA(0x0A);
TFT_WR_DATA(0x00); TFT_WR_REG(0xC3);
TFT_WR_DATA(0x8A);
TFT_WR_DATA(0x2A);
TFT_WR_REG(0xC4);
TFT_WR_DATA(0x8A);
TFT_WR_DATA(0xEE); TFT_WR_REG(0xC5); //VCOM
TFT_WR_DATA(0x0E); TFT_WR_REG(0x36); //MX, MY, RGB mode
TFT_WR_DATA(0xC8); //ST7735R Gamma Sequence
TFT_WR_REG(0xe0);
TFT_WR_DATA(0x0f);
TFT_WR_DATA(0x1a);
TFT_WR_DATA(0x0f);
TFT_WR_DATA(0x18);
TFT_WR_DATA(0x2f);
TFT_WR_DATA(0x28);
TFT_WR_DATA(0x20);
TFT_WR_DATA(0x22);
TFT_WR_DATA(0x1f);
TFT_WR_DATA(0x1b);
TFT_WR_DATA(0x23);
TFT_WR_DATA(0x37);
TFT_WR_DATA(0x00);
TFT_WR_DATA(0x07);
TFT_WR_DATA(0x02);
TFT_WR_DATA(0x10); TFT_WR_REG(0xe1);
TFT_WR_DATA(0x0f);
TFT_WR_DATA(0x1b);
TFT_WR_DATA(0x0f);
TFT_WR_DATA(0x17);
TFT_WR_DATA(0x33);
TFT_WR_DATA(0x2c);
TFT_WR_DATA(0x29);
TFT_WR_DATA(0x2e);
TFT_WR_DATA(0x30);
TFT_WR_DATA(0x30);
TFT_WR_DATA(0x39);
TFT_WR_DATA(0x3f);
TFT_WR_DATA(0x00);
TFT_WR_DATA(0x07);
TFT_WR_DATA(0x03);
TFT_WR_DATA(0x10); TFT_WR_REG(0x2a);
TFT_WR_DATA(0x00);
TFT_WR_DATA(0x00);
TFT_WR_DATA(0x00);
TFT_WR_DATA(0x7f); TFT_WR_REG(0x2b);
TFT_WR_DATA(0x00);
TFT_WR_DATA(0x00);
TFT_WR_DATA(0x00);
TFT_WR_DATA(0x9f); TFT_WR_REG(0xF0); //Enable test command
TFT_WR_DATA(0x01);
TFT_WR_REG(0xF6); //Disable ram power save mode
TFT_WR_DATA(0x00); TFT_WR_REG(0x3A); //65k mode
TFT_WR_DATA(0x05);
TFT_WR_REG(0x29);//Display on TFT_SetParam();//设置LCD参数
LCD_LED_SET;//点亮背光
//LCD_Clear(WHITE);
}
lcd,h
#ifndef __LCD_H
#define __LCD_H
#include "stm32f4xx.h"
#include "MAIN.h"
//支持横竖屏快速定义切换，支持8/16位模式切换#define USE_HORIZONTAL 0 //定义是否使用横屏 0,不使用.1,使用.//LCD重要参数集
typedef struct
{
uint16_t width; //LCD 宽度
uint16_t height; //LCD 高度
uint16_t id; //LCD ID
uint8_t dir; //横屏还是竖屏控制：0，竖屏；1，横屏。
uint16_t wramcmd; //开始写gram指令
uint16_t setxcmd; //设置x坐标指令
uint16_t setycmd; //设置y坐标指令
}_lcd_dev; #define LCD_CTRL GPIOB //定义TFT数据端口#define LCD_LED GPIO_PIN_9 //
#define LCD_RS GPIO_PIN_3 //
#define LCD_CS GPIO_PIN_4 //
#define LCD_SCL GPIO_PIN_7 //6
#define LCD_SDA GPIO_PIN_8 //
#define LCD_RST GPIO_PIN_13 //#define LCD_SDA_SET ( SPI_SDA_GPIO_Port->BSRR = SPI_SDA_Pin);
#define LCD_SDA_CLR ( SPI_SDA_GPIO_Port->BSRR = SPI_SDA_Pin<<16U);#define LCD_SCL_SET ( SPI_SCK_GPIO_Port->BSRR = SPI_SCK_Pin);
#define LCD_SCL_CLR ( SPI_SCK_GPIO_Port->BSRR = SPI_SCK_Pin<<16U);#define LCD_CS_SET ( LCD_CS_GPIO_Port->BSRR = LCD_CS_Pin);
#define LCD_CS_CLR ( LCD_CS_GPIO_Port->BSRR = LCD_CS_Pin<<16U);#define LCD_RS_SET ( LCD_RS_GPIO_Port->BSRR = LCD_RS_Pin);
#define LCD_RS_CLR ( LCD_RS_GPIO_Port->BSRR = LCD_RS_Pin<<16U);#define LCD_RST_SET ( LCD_RSE_GPIO_Port->BSRR = LCD_RSE_Pin);
#define LCD_RST_CLR ( LCD_RSE_GPIO_Port->BSRR = LCD_RSE_Pin<<16U);#define LCD_LED_SET ( LCD_LED_GPIO_Port->BSRR = LCD_LED_Pin);
#define LCD_LED_CLR ( LCD_LED_GPIO_Port->BSRR = LCD_LED_Pin<<16U);/*********************************************************/
//LCD GPIO结构体
typedef struct LCD
{
//配置SPI引脚 GPIO_TypeDef * pLCD_RS_Port; //MOSI 主机发送到从机
uint16_t uLCD_RS_Pin; GPIO_TypeDef * pLCD_CS_Port; //MISO 从机发送到主机
uint16_t uLCD_CS_Pin; GPIO_TypeDef * pLCD_LED_Port; //MISO 从机发送到主机
uint16_t uLCD_LED_Pin; GPIO_TypeDef * pLCD_RSE_Port; //MISO 从机发送到主机
uint16_t uLCD_RSE_Pin;
}LCD_HandleTypedef;#define LCD_RS_1(_HANDLE_) ( (_HANDLE_)->pLCD_RS_Port->BSRR = (_HANDLE_)->uLCD_RS_Pin)
#define LCD_RS_0(_HANDLE_) ( (_HANDLE_)->pLCD_RS_Port->BSRR = (uint32_t)(_HANDLE_)->uLCD_RS_Pin<<16U)#define LCD_CS_1(_HANDLE_) ( (_HANDLE_)->pLCD_CS_Port->BSRR = (_HANDLE_)->uLCD_CS_Pin)
#define LCD_CS_0(_HANDLE_) ( (_HANDLE_)->pLCD_CS_Port->BSRR = (uint32_t)(_HANDLE_)->uLCD_CS_Pin<<16U)#define LCD_LED_1(_HANDLE_) ( (_HANDLE_)->pLCD_LED_Port->BSRR = (_HANDLE_)->uLCD_LED_Pin)
#define LCD_LED_0(_HANDLE_) ( (_HANDLE_)->pLCD_LED_Port->BSRR = (uint32_t)(_HANDLE_)->uLCD_LED_Pin<<16U)#define LCD_RSE_1(_HANDLE_) ( (_HANDLE_)->pLCD_RSE_Port->BSRR = (_HANDLE_)->uLCD_RSE_Pin)
#define LCD_RSE_0(_HANDLE_) ( (_HANDLE_)->pLCD_RSE_Port->BSRR = (uint32_t)(_HANDLE_)->uLCD_RSE_Pin<<16U)
/*********************************************************/
/*********************************************************/
typedef struct spi
{
//配置SPI引脚 GPIO_TypeDef * pCSN_Port; //CSN 片选信号
uint16_t uCSN_Pin; GPIO_TypeDef * pSCK_Port; //SCK 时序
uint16_t uSCK_Pin; GPIO_TypeDef * pMOSI_Port; //MOSI 主机发送到从机
uint16_t uMOSI_Pin; GPIO_TypeDef * pMISO_Port; //MISO 从机发送到主机
uint16_t uMISO_Pin;}SPI_HandleTypedef;//----------------------------------------------
//
// define
//
//----------------------------------------------//#define SPI_SCK_1(_HANDLE_) ( SPI_SCK_GPIO_Port->BSRR = SPI_SCK_Pin);
//#define SPI_SCK_0(_HANDLE_) ( SPI_SCK_GPIO_Port->BSRR = SPI_SCK_Pin<<16U);//#define SPI_MOSI_1(_HANDLE_) ( SPI_SDA_GPIO_Port->BSRR = SPI_SDA_Pin);
//#define SPI_MOSI_0(_HANDLE_) ( SPI_SDA_GPIO_Port->BSRR = SPI_SDA_Pin<<16U);#define SPI_SCK_1(_HANDLE_) ( (_HANDLE_)->pSCK_Port->BSRR = (_HANDLE_)->uSCK_Pin)
#define SPI_SCK_0(_HANDLE_) ( (_HANDLE_)->pSCK_Port->BSRR = (uint32_t)(_HANDLE_)->uSCK_Pin<<16U)#define SPI_MOSI_1(_HANDLE_) ( (_HANDLE_)->pMOSI_Port->BSRR = (_HANDLE_)->uMOSI_Pin)
#define SPI_MOSI_0(_HANDLE_) ( (_HANDLE_)->pMOSI_Port->BSRR = (uint32_t)(_HANDLE_)->uMOSI_Pin<<16U)void vSPI_LCD_Handle_Init(void);
void SPIv_WriteData(uint8_t Data);
void TFT_Init(void);
void TFT_WR_DATA(uint8_t data);
void TFT_Clear(uint16_t Color);
void TFT_DrawRectangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2);
void vSPI_LCD_Handle_Init(void);
void showimage(const unsigned char *p);//画笔颜色#define RED 0xf800
#define GREEN 0x07e0
#define BLUE 0x001f
#define WHITE 0xffff
#define BLACK 0x0000
#define YELLOW 0xFFE0
#define GRAY0 0xEF7D
#define GRAY1 0x8410
#define GRAY2 0x4208 extern unsigned char gImage_qq[];#endif
这只是我的初始化的函数，还有GUI的函数可以看网上的例程
