硬件简介
主控：STM32H750
LCD屏幕为16位并口屏幕
CubeMX配置
chip select: 选择起始地址块号，ADDR[27:26]
Memory type: 内存类型，选择LCD Interface
LCD Register Select: 根据选择计算映射地址, FSNC_A[25]
Data: 数据宽度
NOR/PSRAM timing: 调整时间，能够提升屏幕刷新的速率
代码
2.1 获取LCD屏幕驱动源码
获取到一份能够正常使用的屏幕驱动源码
2.2 计算地址
#define Bank1_LCD_DATA ((uint32_t)0x60080000) /* display data address */
#define Bank1_LCD_REG ((uint32_t)0X60000000) /* display register addres
2.3.1 根据chip select计算 register addres
NE1 -NE4分别对应ADDR[27:26]对应00 - 11
对应的为映射起始地址
2.3.2 根据Memory type和LCD Register Select计算data address
对于8位数据宽度的地址为：
Bank1_LCD_DATA = Bank1_LCD_REG + 1 << 18(LCD Register Select + 0)
对于16位数据宽度的地址为：
Bank1_LCD_DATA = Bank1_LCD_REG + 1 << （18 + 1）(LCD Register Select + 1)
所以
#define Bank1_LCD_DATA ((uint32_t)0x60080000) /* display data address */
驱动代码
lcd.h
#ifndef __LCD_H
#define __LCD_H
/* BEGIN Includes */
#include "main.h"
/* END Includes */
void LCD_Fill(uint16_t xsta,uint16_t ysta,uint16_t xend,uint16_t yend,uint16_t color);
void LCD_Fill_1(uint16_t xsta,uint16_t ysta,uint16_t xend,uint16_t yend,uint8_t color);
void LCD_DrawPoint(uint16_t x,uint16_t y,uint16_t color);
void LCD_DrawRectangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2,uint16_t color);
//void LCD_ShowPicture(uint16_t x,uint16_t y,uint16_t length,uint16_t width,const uint8_t pic[]);
void LCD_ShowPicture(uint16_t x,uint16_t y,uint16_t length,uint16_t width,const uint16_t pic[]);
#endif /* __LCD_H */
lcd.c
/* BEGIN Includes */
#include "lcd.h"
#include "Lcd_init.h"
#include <string.h>
#include "dma.h"
/* END Includes */
/******************************************************************************
函数说明：在指定区域填充颜色
入口数据： xsta,ysta 起始坐标
xend,yend 终止坐标
color 要填充的颜色
返回值： 无
******************************************************************************/
void LCD_Fill(uint16_t xsta,uint16_t ysta,uint16_t xend,uint16_t yend,uint16_t color)
{
uint16_t i,j;
LCD_Address_Set(xsta,ysta,xend-1,yend-1);
for(i=ysta;i<yend;i++)
{
for(j=xsta;j<xend;j++)
{
LCD_WR_DATA(color);
}
}
}
static uint8_t buf[240*10*2] __attribute__((section(".ARM.__at_0x38000400")));
void LCD_Fill_1(uint16_t xsta,uint16_t ysta,uint16_t xend,uint16_t yend,uint8_t color)
{
memset(buf, color, sizeof(buf));
LCD_Address_Set(xsta,ysta,xend-1,yend-1);
HAL_DMA_Start_IT(&hdma_memtomem_dma1_stream0, (uint32_t)0x38000400, Bank1_LCD_DATA, ((yend + 1) - ysta) * ((xend + 1) - xsta) * 2);
}
/******************************************************************************
函数说明：在指定位置画点
入口数据：x,y 画点坐标
color 点的颜色
返回值： 无
******************************************************************************/
void LCD_DrawPoint(uint16_t x,uint16_t y,uint16_t color)
{
LCD_Address_Set(x,y,x,y);//
LCD_WR_DATA(color);
}
/******************************************************************************
函数说明：画线
入口数据：x1,y1 起始坐标
x2,y2 终止坐标
color 线的颜色
返回值： 无
******************************************************************************/
void LCD_DrawLine(uint16_t x1,uint16_t y1,uint16_t x2,uint16_t y2,uint16_t color)
{
uint16_t t;
int xerr=0,yerr=0,delta_x,delta_y,distance;
int incx,incy,uRow,uCol;
delta_x=x2-x1; //
delta_y=y2-y1;
uRow=x1;//
uCol=y1;
if(delta_x>0)incx=1; //
else if (delta_x==0)incx=0;//
else {incx=-1;delta_x=-delta_x;}
if(delta_y>0)incy=1;
else if (delta_y==0)incy=0;//
else {incy=-1;delta_y=-delta_y;}
if(delta_x>delta_y)distance=delta_x; //
else distance=delta_y;
for(t=0;t<distance+1;t++)
{
LCD_DrawPoint(uRow,uCol,color);//
xerr+=delta_x;
yerr+=delta_y;
if(xerr>distance)
{
xerr-=distance;
uRow+=incx;
}
if(yerr>distance)
{
yerr-=distance;
uCol+=incy;
}
}
}
/******************************************************************************
函数说明：画矩形
入口数据：x1,y1 起始坐标
x2,y2 终止坐标
color 矩形的颜色
返回值： 无
******************************************************************************/
void LCD_DrawRectangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2,uint16_t color)
{
LCD_DrawLine(x1,y1,x2,y1,color);
LCD_DrawLine(x1,y1,x1,y2,color);
LCD_DrawLine(x1,y2,x2,y2,color);
LCD_DrawLine(x2,y1,x2,y2,color);
}
/******************************************************************************
函数说明：画圆
入口数据：x0,y0 圆心坐标
r 半径
color 圆的颜色
返回值： 无
******************************************************************************/
void Draw_Circle(uint16_t x0,uint16_t y0,uint8_t r,uint16_t color)
{
int a,b;
a=0;b=r;
while(a<=b)
{
LCD_DrawPoint(x0-b,y0-a,color); //3
LCD_DrawPoint(x0+b,y0-a,color); //0
LCD_DrawPoint(x0-a,y0+b,color); //1
LCD_DrawPoint(x0-a,y0-b,color); //2
LCD_DrawPoint(x0+b,y0+a,color); //4
LCD_DrawPoint(x0+a,y0-b,color); //5
LCD_DrawPoint(x0+a,y0+b,color); //6
LCD_DrawPoint(x0-b,y0+a,color); //7
a++;
if((a*a+b*b)>(r*r))//
{
b--;
}
}
}
/******************************************************************************
函数说明：显示图片
入口数据：x,y起点坐标
length 图片长度
width 图片宽度
pic[] 图片数组
返回值： 无
******************************************************************************/
void LCD_ShowPicture(uint16_t x,uint16_t y,uint16_t length,uint16_t width,const uint16_t pic[])
{
uint16_t i,j;
uint32_t k=0;
LCD_Address_Set(x,y,x+length-1,y+width-1);
for(i=0;i<length;i++)
{
for(j=0;j<width;j++)
{
LCD_WR_DATA(pic[k]);
k++;
}
}
}
Lcd_init.h
#ifndef __LCD_INIT_H
#define __LCD_INIT_H
/* BEGIN Includes */
#include "main.h"
/* END Includes */
#define USE_HORIZONTAL 1 //设置横屏或者竖屏显示 0或1为竖屏 2或3为横屏
#if USE_HORIZONTAL==0||USE_HORIZONTAL==1
#define LCD_W 320
#define LCD_H 240
#else
#define LCD_W 320
#define LCD_H 240
#endif
//#define Bank1_LCD_DATA ((uint32_t)0x60108CA0) /* display data address */
#define Bank1_LCD_DATA ((uint32_t)0x6010fff0) /* display data address */
#define Bank1_LCD_REG ((uint32_t)0X60000000) /* display register address */
#define LCD_FMC_DATA(value) ((*(__IO uint8_t *)(Bank1_LCD_DATA)) = ((uint8_t )(value))) // 写数据寄存器
#define LCD_FMC_REG(index) ((*(__IO uint8_t *)(Bank1_LCD_REG)) = ((uint8_t )index))
#define LCD_SCLK_Clr //HAL_GPIO_WritePin(GPIOE,GPIO_PIN_7,0)//SCL=SCLK
#define LCD_SCLK_Set //HAL_GPIO_WritePin(GPIOE,GPIO_PIN_7,1)
#define LCD_MOSI_Clr //HAL_GPIO_WritePin(GPIOE,GPIO_PIN_9,0)//SDA=MOSI
#define LCD_MOSI_Set //HAL_GPIO_WritePin(GPIOE,GPIO_PIN_9,1)
#define LCD_RES_Clr HAL_GPIO_WritePin(GPIOE,GPIO_PIN_1,0)//RES
#define LCD_RES_Set HAL_GPIO_WritePin(GPIOE,GPIO_PIN_1,1)
#define LCD_DC_Clr HAL_GPIO_WritePin(GPIOE,GPIO_PIN_4,0)//DC
#define LCD_DC_Set HAL_GPIO_WritePin(GPIOE,GPIO_PIN_4,1)
#define LCD_CS_Clr HAL_GPIO_WritePin(GPIOC,GPIO_PIN_7,0)//CS
#define LCD_CS_Set HAL_GPIO_WritePin(GPIOC,GPIO_PIN_7,1)
#define LCD_BLK_Clr() //HAL_GPIO_WritePin(GPIOE,GPIO_PIN_9,0)//BLK
#define LCD_BLK_Set() //HAL_GPIO_WritePin(GPIOE,GPIO_PIN_7,1)
void LCD_Writ_Bus(uint8_t dat);//
void LCD_WR_DATA8(uint8_t dat);//
void LCD_WR_DATA(uint16_t dat);//
void LCD_WR_REG(uint8_t dat);//
void LCD_Address_Set(uint16_t x1,uint16_t y1,uint16_t x2,uint16_t y2);//
void LCD_Init(void);//
#endif /* __LCD_INIT_H */
Lcd_init_.c
/* BEGIN Includes */
#include "Lcd_init.h"
#include "lcd.h"
/* END Includes */
void LCD_Writ_Bus(uint8_t dat)
{
LCD_FMC_DATA(dat);
}
void LCD_WR_DATA8(uint8_t dat)
{
LCD_FMC_DATA(dat);
}
void LCD_WR_DATA(uint16_t dat)
{
LCD_FMC_DATA(dat >> 8);
LCD_FMC_DATA(dat);
}
void LCD_WR_REG(uint8_t dat)
{
LCD_FMC_REG(dat);
}
void LCD_Address_Set(uint16_t x1,uint16_t y1,uint16_t x2,uint16_t y2)
{
LCD_WR_REG(0x2a);//
LCD_Writ_Bus(x1>>8);
LCD_Writ_Bus(x1);
LCD_Writ_Bus(x2>>8);
LCD_Writ_Bus(x2);
LCD_WR_REG(0x2b);//
LCD_Writ_Bus(y1>>8);
LCD_Writ_Bus(y1);
LCD_Writ_Bus(y2>>8);
LCD_Writ_Bus(y2);
LCD_WR_REG(0x2c);//
}
void LCD_Init(void)
{
LCD_RES_Clr;//
HAL_Delay(100);
LCD_RES_Set;
HAL_Delay(100);
LCD_BLK_Set();//
HAL_Delay(100);
//************* Start Initial Sequence **********//
LCD_WR_REG(0x11);
HAL_Delay(1000); //Delay 120ms
LCD_WR_REG(0X36);// Memory Access Control
if(USE_HORIZONTAL==0)LCD_WR_DATA8(0x00);
else if(USE_HORIZONTAL==1)LCD_WR_DATA8(0xC0);
else if(USE_HORIZONTAL==2)LCD_WR_DATA8(0x70);
else LCD_WR_DATA8(0xA0);
LCD_WR_REG(0X3A);
LCD_WR_DATA8(0X05);
//--------------------------------ST7789S Frame rate setting-------------------------
LCD_WR_REG(0xb2);
LCD_WR_DATA8(0x0c);
LCD_WR_DATA8(0x0c);
LCD_WR_DATA8(0x00);
LCD_WR_DATA8(0x33);
LCD_WR_DATA8(0x33);
LCD_WR_REG(0xb7);
LCD_WR_DATA8(0x35);
//---------------------------------ST7789S Power setting-----------------------------
LCD_WR_REG(0xbb);
LCD_WR_DATA8(0x35);
LCD_WR_REG(0xc0);
LCD_WR_DATA8(0x2c);
LCD_WR_REG(0xc2);
LCD_WR_DATA8(0x01);
LCD_WR_REG(0xc3);
LCD_WR_DATA8(0x13);
LCD_WR_REG(0xc4);
LCD_WR_DATA8(0x20);
LCD_WR_REG(0xc6);
LCD_WR_DATA8(0x0f);
LCD_WR_REG(0xca);
LCD_WR_DATA8(0x0f);
LCD_WR_REG(0xc8);
LCD_WR_DATA8(0x08);
LCD_WR_REG(0x55);
LCD_WR_DATA8(0x90);
LCD_WR_REG(0xd0);
LCD_WR_DATA8(0xa4);
LCD_WR_DATA8(0xa1);
//--------------------------------ST7789S gamma setting------------------------------
LCD_WR_REG(0xe0);
LCD_WR_DATA8(0xd0);
LCD_WR_DATA8(0x00);
LCD_WR_DATA8(0x06);
LCD_WR_DATA8(0x09);
LCD_WR_DATA8(0x0b);
LCD_WR_DATA8(0x2a);
LCD_WR_DATA8(0x3c);
LCD_WR_DATA8(0x55);
LCD_WR_DATA8(0x4b);
LCD_WR_DATA8(0x08);
LCD_WR_DATA8(0x16);
LCD_WR_DATA8(0x14);
LCD_WR_DATA8(0x19);
LCD_WR_DATA8(0x20);
LCD_WR_REG(0xe1);
LCD_WR_DATA8(0xd0);
LCD_WR_DATA8(0x00);
LCD_WR_DATA8(0x06);
LCD_WR_DATA8(0x09);
LCD_WR_DATA8(0x0b);
LCD_WR_DATA8(0x29);
LCD_WR_DATA8(0x36);
LCD_WR_DATA8(0x54);
LCD_WR_DATA8(0x4b);
LCD_WR_DATA8(0x0d);
LCD_WR_DATA8(0x16);
LCD_WR_DATA8(0x14);
LCD_WR_DATA8(0x21);
LCD_WR_DATA8(0x20);
LCD_WR_REG(0x29);
// LCD_WR_REG(0x21); //´Չ«·´ת
}
