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STM32CubeMX-Keil_uVision5/FinalHomework/Core/Src/lcd.c

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期末大作业-增加显示屏
2025-01-07 10:02:18 +08:00
/****************************************************************************************************
//=========================================<3D><>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD>================================================//
// LCDģ<44><C4A3> STM32<33><32>Ƭ<EFBFBD><C6AC>
// VCC <20><> DC5V/3.3V //<2F><>Դ
// GND <20><> GND //<2F><>Դ<EFBFBD><D4B4>
//=======================================Һ<><D2BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߽<EFBFBD><DFBD><EFBFBD>==========================================//
//<2F><>ģ<EFBFBD><C4A3>Ĭ<EFBFBD><C4AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ΪSPI<50><49><EFBFBD><EFBFBD>
// LCDģ<44><C4A3> STM32<33><32>Ƭ<EFBFBD><C6AC>
// SDA <20><> PB15 //Һ<><D2BA><EFBFBD><EFBFBD>SPI<50><49><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD>ź<EFBFBD>
//=======================================Һ<><D2BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߽<EFBFBD><DFBD><EFBFBD>==========================================//
// LCDģ<44><C4A3> STM32<33><32>Ƭ<EFBFBD><C6AC>
// SCK <20><> PB13 //Һ<><D2BA><EFBFBD><EFBFBD>SPI<50><49><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD>ź<EFBFBD>
// A0 <20><> PB10 //Һ<><D2BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ź<EFBFBD>
// RESET <20><> PB12 //Һ<><D2BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB><EFBFBD><EFBFBD><EFBFBD>ź<EFBFBD>
// CS <20><> PB11 //Һ<><D2BA><EFBFBD><EFBFBD>Ƭѡ<C6AC><D1A1><EFBFBD><EFBFBD><EFBFBD>ź<EFBFBD>
**************************************************************************************************/
/* @attention
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, QD electronic SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
**************************************************************************************************/
#include "lcd.h"
#include "stdlib.h"
#include "spi.h"
#include "main.h"
//<2F><><EFBFBD><EFBFBD>LCD<43><44>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>
//Ĭ<><C4AC>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>
_lcd_dev lcddev;
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɫ,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɫ
uint16_t POINT_COLOR = 0x0000,BACK_COLOR = 0xFFFF;
uint16_t DeviceCode;
/*****************************************************************************
* @name :u8 SPI_WriteByte(x,u8 Byte)
* @date :2018-08-09
* @function :Write a byte of data using STM32's hardware SPI
* @parameters : Byte:Data to be written
******************************************************************************/
uint8_t SPI2_ReadWriteByte( uint8_t TxData)
{
uint8_t Rxdata;
HAL_SPI_TransmitReceive(&hspi2,&TxData,&Rxdata,1, 1000);
return Rxdata;
}
/*****************************************************************************
* @name :void LCD_WR_REG(uint8_t data)
* @date :2018-08-09
* @function :Write an 8-bit command to the LCD screen
* @parameters :data:Command value to be written
* @retvalue :None
******************************************************************************/
void LCD_WR_REG(uint8_t data)
{
LCD_CS_CLR;
LCD_RS_CLR;
SPI2_ReadWriteByte(data);
LCD_CS_SET;
}
/*****************************************************************************
* @name :void LCD_WR_DATA(uint8_t data)
* @date :2018-08-09
* @function :Write an 8-bit data to the LCD screen
* @parameters :data:data value to be written
* @retvalue :None
******************************************************************************/
void LCD_WR_DATA(uint8_t data)
{
LCD_CS_CLR;
LCD_RS_SET;
SPI2_ReadWriteByte(data);
LCD_CS_SET;
}
/*****************************************************************************
* @name :void LCD_WriteReg(uint8_t LCD_Reg, uint16_t LCD_RegValue)
* @date :2018-08-09
* @function :Write data into registers
* @parameters :LCD_Reg:Register address
LCD_RegValue:Data to be written
* @retvalue :None
******************************************************************************/
void LCD_WriteReg(uint8_t LCD_Reg, uint16_t LCD_RegValue)
{
LCD_WR_REG(LCD_Reg);
LCD_WR_DATA(LCD_RegValue);
}
/*****************************************************************************
* @name :void LCD_WriteRAM_Prepare(void)
* @date :2018-08-09
* @function :Write GRAM
* @parameters :None
* @retvalue :None
******************************************************************************/
void LCD_WriteRAM_Prepare(void)
{
LCD_WR_REG(lcddev.wramcmd);
}
/*****************************************************************************
* @name :void Lcd_WriteData_16Bit(uint16_t Data)
* @date :2018-08-09
* @function :Write an 16-bit command to the LCD screen
* @parameters :Data:Data to be written
* @retvalue :None
******************************************************************************/
void Lcd_WriteData_16Bit(uint16_t Data)
{
LCD_CS_CLR;
LCD_RS_SET;
//SPI_WriteByte(SPI2,Data>>8);
SPI2_ReadWriteByte(Data>>8);
SPI2_ReadWriteByte(Data);
LCD_CS_SET;
}
/*****************************************************************************
* @name :void LCD_DrawPoint(uint16_t x,uint16_t y)
* @date :2018-08-09
* @function :Write a pixel data at a specified location
* @parameters :x:the x coordinate of the pixel
y:the y coordinate of the pixel
* @retvalue :None
******************************************************************************/
void LCD_DrawPoint(uint16_t x,uint16_t y)
{
LCD_SetCursor(x,y);//<2F><><EFBFBD>ù<EFBFBD><C3B9><EFBFBD>λ<EFBFBD><CEBB>
Lcd_WriteData_16Bit(POINT_COLOR);
}
/*****************************************************************************
* @name :void LCD_Clear(uint16_t Color)
* @date :2018-08-09
* @function :Full screen filled LCD screen
* @parameters :color:Filled color
* @retvalue :None
******************************************************************************/
void LCD_Clear(uint16_t Color)
{
unsigned int i,m;
LCD_SetWindows(0,0,lcddev.width-1,lcddev.height-1);
LCD_CS_CLR;
LCD_RS_SET;
for(i=0;i<lcddev.height;i++)
{
for(m=0;m<lcddev.width;m++)
{
Lcd_WriteData_16Bit(Color);
}
}
LCD_CS_SET;
}
/*****************************************************************************
* @name :void LCD_RESET(void)
* @date :2018-08-09
* @function :Reset LCD screen
* @parameters :None
* @retvalue :None
******************************************************************************/
void LCD_RESET(void)
{
LCD_RST_CLR;
HAL_Delay(100);
LCD_RST_SET;
HAL_Delay(50);
}
/*****************************************************************************
* @name :void LCD_RESET(void)
* @date :2018-08-09
* @function :Initialization LCD screen
* @parameters :None
* @retvalue :None
******************************************************************************/
void LCD_Init(void)
{
LCD_RESET(); //LCD <20><>λ
//************* ST7735S<35><53>ʼ<EFBFBD><CABC>**********//
LCD_WR_REG(0x11);//Sleep exit
HAL_Delay (120);
//ST7735R Frame Rate
LCD_WR_REG(0xB1);
LCD_WR_DATA(0x01);
LCD_WR_DATA(0x2C);
LCD_WR_DATA(0x2D);
LCD_WR_REG(0xB2);
LCD_WR_DATA(0x01);
LCD_WR_DATA(0x2C);
LCD_WR_DATA(0x2D);
LCD_WR_REG(0xB3);
LCD_WR_DATA(0x01);
LCD_WR_DATA(0x2C);
LCD_WR_DATA(0x2D);
LCD_WR_DATA(0x01);
LCD_WR_DATA(0x2C);
LCD_WR_DATA(0x2D);
LCD_WR_REG(0xB4); //Column inversion
LCD_WR_DATA(0x07);
//ST7735R Power Sequence
LCD_WR_REG(0xC0);
LCD_WR_DATA(0xA2);
LCD_WR_DATA(0x02);
LCD_WR_DATA(0x84);
LCD_WR_REG(0xC1);
LCD_WR_DATA(0xC5);
LCD_WR_REG(0xC2);
LCD_WR_DATA(0x0A);
LCD_WR_DATA(0x00);
LCD_WR_REG(0xC3);
LCD_WR_DATA(0x8A);
LCD_WR_DATA(0x2A);
LCD_WR_REG(0xC4);
LCD_WR_DATA(0x8A);
LCD_WR_DATA(0xEE);
LCD_WR_REG(0xC5); //VCOM
LCD_WR_DATA(0x0E);
LCD_WR_REG(0x36); //MX, MY, RGB mode
LCD_WR_DATA(0xC0);
//ST7735R Gamma Sequence
LCD_WR_REG(0xe0);
LCD_WR_DATA(0x0f);
LCD_WR_DATA(0x1a);
LCD_WR_DATA(0x0f);
LCD_WR_DATA(0x18);
LCD_WR_DATA(0x2f);
LCD_WR_DATA(0x28);
LCD_WR_DATA(0x20);
LCD_WR_DATA(0x22);
LCD_WR_DATA(0x1f);
LCD_WR_DATA(0x1b);
LCD_WR_DATA(0x23);
LCD_WR_DATA(0x37);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x07);
LCD_WR_DATA(0x02);
LCD_WR_DATA(0x10);
LCD_WR_REG(0xe1);
LCD_WR_DATA(0x0f);
LCD_WR_DATA(0x1b);
LCD_WR_DATA(0x0f);
LCD_WR_DATA(0x17);
LCD_WR_DATA(0x33);
LCD_WR_DATA(0x2c);
LCD_WR_DATA(0x29);
LCD_WR_DATA(0x2e);
LCD_WR_DATA(0x30);
LCD_WR_DATA(0x30);
LCD_WR_DATA(0x39);
LCD_WR_DATA(0x3f);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x07);
LCD_WR_DATA(0x03);
LCD_WR_DATA(0x10);
LCD_WR_REG(0x2a);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x7f);
LCD_WR_REG(0x2b);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x9f);
LCD_WR_REG(0xF0); //Enable test command
LCD_WR_DATA(0x01);
LCD_WR_REG(0xF6); //Disable ram power save mode
LCD_WR_DATA(0x00);
LCD_WR_REG(0x3A); //65k mode
LCD_WR_DATA(0x05);
LCD_WR_REG(0x29);//Display on
LCD_direction(USE_HORIZONTAL);//<2F><><EFBFBD><EFBFBD>LCD<43><44>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD>
LCD_Clear(WHITE);//<2F><>ȫ<EFBFBD><C8AB><EFBFBD><EFBFBD>ɫ
}
/*****************************************************************************
* @name :void LCD_SetWindows(uint16_t xStar, uint16_t yStar,uint16_t xEnd,uint16_t yEnd)
* @date :2018-08-09
* @function :Setting LCD display window
* @parameters :xStar:the bebinning x coordinate of the LCD display window
yStar:the bebinning y coordinate of the LCD display window
xEnd:the endning x coordinate of the LCD display window
yEnd:the endning y coordinate of the LCD display window
* @retvalue :None
******************************************************************************/
void LCD_SetWindows(uint16_t xStar, uint16_t yStar,uint16_t xEnd,uint16_t yEnd)
{
LCD_WR_REG(lcddev.setxcmd); //LCD_WR_REG(0x2a);//<2F>е<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD>
LCD_WR_DATA(0x00);
LCD_WR_DATA(xStar);
LCD_WR_DATA(0x00);
LCD_WR_DATA(xEnd);
LCD_WR_REG(lcddev.setycmd); //LCD_WR_REG(0x2b);//<2F>е<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD>
LCD_WR_DATA(0x00);
LCD_WR_DATA(yStar);
LCD_WR_DATA(0x00);
LCD_WR_DATA(yEnd);
LCD_WriteRAM_Prepare(); //<2F><>ʼд<CABC><D0B4>GRAM
}
/*****************************************************************************
* @name :void LCD_SetCursor(uint16_t Xpos, uint16_t Ypos)
* @date :2018-08-09
* @function :Set coordinate value
* @parameters :Xpos:the x coordinate of the pixel
Ypos:the y coordinate of the pixel
* @retvalue :None
******************************************************************************/
void LCD_SetCursor(uint16_t Xpos, uint16_t Ypos)
{
LCD_SetWindows(Xpos,Ypos,Xpos,Ypos);
}
/*****************************************************************************
* @name :void LCD_direction(uint8_t direction)
* @date :2018-08-09
* @function :Setting the display direction of LCD screen
* @parameters :direction: 0-0 degree
1-90 degree
2-180 degree
3-270 degree
* @retvalue :None
******************************************************************************/
void LCD_direction(uint8_t direction)
{
lcddev.setxcmd=0x2A;
lcddev.setycmd=0x2B;
lcddev.wramcmd=0x2C;
switch(direction)
{
case 0:
lcddev.width=LCD_W;
lcddev.height=LCD_H;
LCD_WriteReg(0x36,(0<<3)|(1<<6)|(1<<7));//BGR==1,MY==0,MX==0,MV==0
break;
case 1:
lcddev.width=LCD_H;
lcddev.height=LCD_W;
LCD_WriteReg(0x36,(0<<3)|(1<<7)|(1<<5));//BGR==1,MY==1,MX==0,MV==1
break;
case 2:
lcddev.width=LCD_W;
lcddev.height=LCD_H;
LCD_WriteReg(0x36,(0<<3)|(0<<6)|(0<<7));//BGR==1,MY==0,MX==0,MV==0
break;
case 3:
lcddev.width= LCD_H;
lcddev.height=LCD_W;
LCD_WriteReg(0x36,(0<<3)|(0<<7)|(1<<6)|(1<<5));//BGR==1,MY==1,MX==0,MV==1
break;
default:break;
}
}
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