385 lines
11 KiB
C
385 lines
11 KiB
C
/****************************************************************************************************
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//=========================================电源接线================================================//
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// LCD模块 STM32单片机
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// VCC 接 DC5V/3.3V //电源
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// GND 接 GND //电源地
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//=======================================液晶屏数据线接线==========================================//
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//本模块默认数据总线类型为SPI总线
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// LCD模块 STM32单片机
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// SDA 接 PB15 //液晶屏SPI总线数据写信号
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//=======================================液晶屏控制线接线==========================================//
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// LCD模块 STM32单片机
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// SCK 接 PB13 //液晶屏SPI总线时钟信号
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// A0 接 PB10 //液晶屏数据/命令控制信号
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// RESET 接 PB12 //液晶屏复位控制信号
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// CS 接 PB11 //液晶屏片选控制信号
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**************************************************************************************************/
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/* @attention
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*
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* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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* TIME. AS A RESULT, QD electronic SHALL NOT BE HELD LIABLE FOR ANY
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* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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**************************************************************************************************/
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#include "lcd.h"
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#include "stdlib.h"
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#include "spi.h"
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#include "main.h"
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//管理LCD重要参数
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//默认为竖屏
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_lcd_dev lcddev;
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//画笔颜色,背景颜色
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uint16_t POINT_COLOR = 0x0000,BACK_COLOR = 0xFFFF;
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uint16_t DeviceCode;
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/*****************************************************************************
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* @name :u8 SPI_WriteByte(x,u8 Byte)
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* @date :2018-08-09
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* @function :Write a byte of data using STM32's hardware SPI
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* @parameters : Byte:Data to be written
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******************************************************************************/
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uint8_t SPI2_ReadWriteByte( uint8_t TxData)
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{
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uint8_t Rxdata;
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HAL_SPI_TransmitReceive(&hspi2,&TxData,&Rxdata,1, 1000);
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return Rxdata;
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}
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/*****************************************************************************
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* @name :void LCD_WR_REG(uint8_t data)
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* @date :2018-08-09
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* @function :Write an 8-bit command to the LCD screen
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* @parameters :data:Command value to be written
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* @retvalue :None
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******************************************************************************/
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void LCD_WR_REG(uint8_t data)
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{
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LCD_CS_CLR;
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LCD_RS_CLR;
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SPI2_ReadWriteByte(data);
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LCD_CS_SET;
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}
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/*****************************************************************************
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* @name :void LCD_WR_DATA(uint8_t data)
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* @date :2018-08-09
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* @function :Write an 8-bit data to the LCD screen
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* @parameters :data:data value to be written
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* @retvalue :None
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******************************************************************************/
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void LCD_WR_DATA(uint8_t data)
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{
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LCD_CS_CLR;
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LCD_RS_SET;
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SPI2_ReadWriteByte(data);
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LCD_CS_SET;
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}
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/*****************************************************************************
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* @name :void LCD_WriteReg(uint8_t LCD_Reg, uint16_t LCD_RegValue)
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* @date :2018-08-09
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* @function :Write data into registers
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* @parameters :LCD_Reg:Register address
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LCD_RegValue:Data to be written
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* @retvalue :None
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******************************************************************************/
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void LCD_WriteReg(uint8_t LCD_Reg, uint16_t LCD_RegValue)
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{
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LCD_WR_REG(LCD_Reg);
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LCD_WR_DATA(LCD_RegValue);
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}
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/*****************************************************************************
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* @name :void LCD_WriteRAM_Prepare(void)
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* @date :2018-08-09
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* @function :Write GRAM
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* @parameters :None
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* @retvalue :None
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******************************************************************************/
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void LCD_WriteRAM_Prepare(void)
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{
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LCD_WR_REG(lcddev.wramcmd);
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}
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/*****************************************************************************
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* @name :void Lcd_WriteData_16Bit(uint16_t Data)
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* @date :2018-08-09
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* @function :Write an 16-bit command to the LCD screen
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* @parameters :Data:Data to be written
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* @retvalue :None
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******************************************************************************/
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void Lcd_WriteData_16Bit(uint16_t Data)
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{
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LCD_CS_CLR;
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LCD_RS_SET;
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//SPI_WriteByte(SPI2,Data>>8);
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SPI2_ReadWriteByte(Data>>8);
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SPI2_ReadWriteByte(Data);
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LCD_CS_SET;
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}
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/*****************************************************************************
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* @name :void LCD_DrawPoint(uint16_t x,uint16_t y)
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* @date :2018-08-09
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* @function :Write a pixel data at a specified location
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* @parameters :x:the x coordinate of the pixel
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y:the y coordinate of the pixel
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* @retvalue :None
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******************************************************************************/
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void LCD_DrawPoint(uint16_t x,uint16_t y)
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{
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LCD_SetCursor(x,y);//设置光标位置
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Lcd_WriteData_16Bit(POINT_COLOR);
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}
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/*****************************************************************************
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* @name :void LCD_Clear(uint16_t Color)
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* @date :2018-08-09
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* @function :Full screen filled LCD screen
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* @parameters :color:Filled color
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* @retvalue :None
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******************************************************************************/
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void LCD_Clear(uint16_t Color)
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{
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unsigned int i,m;
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LCD_SetWindows(0,0,lcddev.width-1,lcddev.height-1);
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LCD_CS_CLR;
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LCD_RS_SET;
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for(i=0;i<lcddev.height;i++)
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{
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for(m=0;m<lcddev.width;m++)
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{
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Lcd_WriteData_16Bit(Color);
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}
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}
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LCD_CS_SET;
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}
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/*****************************************************************************
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* @name :void LCD_RESET(void)
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* @date :2018-08-09
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* @function :Reset LCD screen
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* @parameters :None
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* @retvalue :None
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******************************************************************************/
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void LCD_RESET(void)
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{
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LCD_RST_CLR;
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HAL_Delay(100);
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LCD_RST_SET;
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HAL_Delay(50);
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}
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/*****************************************************************************
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* @name :void LCD_RESET(void)
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* @date :2018-08-09
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* @function :Initialization LCD screen
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* @parameters :None
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* @retvalue :None
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******************************************************************************/
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void LCD_Init(void)
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{
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LCD_RESET(); //LCD 复位
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//************* ST7735S初始化**********//
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LCD_WR_REG(0x11);//Sleep exit
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HAL_Delay (120);
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//ST7735R Frame Rate
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LCD_WR_REG(0xB1);
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LCD_WR_DATA(0x01);
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LCD_WR_DATA(0x2C);
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LCD_WR_DATA(0x2D);
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LCD_WR_REG(0xB2);
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LCD_WR_DATA(0x01);
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LCD_WR_DATA(0x2C);
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LCD_WR_DATA(0x2D);
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LCD_WR_REG(0xB3);
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LCD_WR_DATA(0x01);
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LCD_WR_DATA(0x2C);
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LCD_WR_DATA(0x2D);
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LCD_WR_DATA(0x01);
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LCD_WR_DATA(0x2C);
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LCD_WR_DATA(0x2D);
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LCD_WR_REG(0xB4); //Column inversion
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LCD_WR_DATA(0x07);
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//ST7735R Power Sequence
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LCD_WR_REG(0xC0);
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LCD_WR_DATA(0xA2);
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LCD_WR_DATA(0x02);
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LCD_WR_DATA(0x84);
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LCD_WR_REG(0xC1);
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LCD_WR_DATA(0xC5);
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LCD_WR_REG(0xC2);
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LCD_WR_DATA(0x0A);
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LCD_WR_DATA(0x00);
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LCD_WR_REG(0xC3);
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LCD_WR_DATA(0x8A);
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LCD_WR_DATA(0x2A);
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LCD_WR_REG(0xC4);
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LCD_WR_DATA(0x8A);
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LCD_WR_DATA(0xEE);
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LCD_WR_REG(0xC5); //VCOM
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LCD_WR_DATA(0x0E);
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LCD_WR_REG(0x36); //MX, MY, RGB mode
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LCD_WR_DATA(0xC0);
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//ST7735R Gamma Sequence
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LCD_WR_REG(0xe0);
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LCD_WR_DATA(0x0f);
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LCD_WR_DATA(0x1a);
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LCD_WR_DATA(0x0f);
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LCD_WR_DATA(0x18);
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LCD_WR_DATA(0x2f);
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LCD_WR_DATA(0x28);
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LCD_WR_DATA(0x20);
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LCD_WR_DATA(0x22);
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LCD_WR_DATA(0x1f);
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LCD_WR_DATA(0x1b);
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LCD_WR_DATA(0x23);
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LCD_WR_DATA(0x37);
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LCD_WR_DATA(0x00);
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LCD_WR_DATA(0x07);
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LCD_WR_DATA(0x02);
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LCD_WR_DATA(0x10);
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LCD_WR_REG(0xe1);
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LCD_WR_DATA(0x0f);
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LCD_WR_DATA(0x1b);
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LCD_WR_DATA(0x0f);
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LCD_WR_DATA(0x17);
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LCD_WR_DATA(0x33);
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LCD_WR_DATA(0x2c);
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LCD_WR_DATA(0x29);
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LCD_WR_DATA(0x2e);
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LCD_WR_DATA(0x30);
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LCD_WR_DATA(0x30);
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LCD_WR_DATA(0x39);
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LCD_WR_DATA(0x3f);
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LCD_WR_DATA(0x00);
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LCD_WR_DATA(0x07);
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LCD_WR_DATA(0x03);
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LCD_WR_DATA(0x10);
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LCD_WR_REG(0x2a);
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LCD_WR_DATA(0x00);
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LCD_WR_DATA(0x00);
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LCD_WR_DATA(0x00);
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LCD_WR_DATA(0x7f);
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LCD_WR_REG(0x2b);
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LCD_WR_DATA(0x00);
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LCD_WR_DATA(0x00);
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LCD_WR_DATA(0x00);
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LCD_WR_DATA(0x9f);
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LCD_WR_REG(0xF0); //Enable test command
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LCD_WR_DATA(0x01);
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LCD_WR_REG(0xF6); //Disable ram power save mode
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LCD_WR_DATA(0x00);
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LCD_WR_REG(0x3A); //65k mode
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LCD_WR_DATA(0x05);
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LCD_WR_REG(0x29);//Display on
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LCD_direction(USE_HORIZONTAL);//设置LCD显示方向
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LCD_Clear(WHITE);//清全屏白色
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}
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/*****************************************************************************
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* @name :void LCD_SetWindows(uint16_t xStar, uint16_t yStar,uint16_t xEnd,uint16_t yEnd)
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* @date :2018-08-09
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* @function :Setting LCD display window
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* @parameters :xStar:the bebinning x coordinate of the LCD display window
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yStar:the bebinning y coordinate of the LCD display window
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xEnd:the endning x coordinate of the LCD display window
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yEnd:the endning y coordinate of the LCD display window
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* @retvalue :None
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******************************************************************************/
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void LCD_SetWindows(uint16_t xStar, uint16_t yStar,uint16_t xEnd,uint16_t yEnd)
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{
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LCD_WR_REG(lcddev.setxcmd); //LCD_WR_REG(0x2a);//列地址设置
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LCD_WR_DATA(0x00);
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LCD_WR_DATA(xStar);
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LCD_WR_DATA(0x00);
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LCD_WR_DATA(xEnd);
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LCD_WR_REG(lcddev.setycmd); //LCD_WR_REG(0x2b);//行地址设置
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LCD_WR_DATA(0x00);
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LCD_WR_DATA(yStar);
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LCD_WR_DATA(0x00);
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LCD_WR_DATA(yEnd);
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LCD_WriteRAM_Prepare(); //开始写入GRAM
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}
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/*****************************************************************************
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* @name :void LCD_SetCursor(uint16_t Xpos, uint16_t Ypos)
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* @date :2018-08-09
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* @function :Set coordinate value
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* @parameters :Xpos:the x coordinate of the pixel
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Ypos:the y coordinate of the pixel
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* @retvalue :None
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******************************************************************************/
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void LCD_SetCursor(uint16_t Xpos, uint16_t Ypos)
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{
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LCD_SetWindows(Xpos,Ypos,Xpos,Ypos);
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}
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/*****************************************************************************
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* @name :void LCD_direction(uint8_t direction)
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* @date :2018-08-09
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* @function :Setting the display direction of LCD screen
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* @parameters :direction: 0-0 degree
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1-90 degree
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2-180 degree
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3-270 degree
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* @retvalue :None
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******************************************************************************/
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void LCD_direction(uint8_t direction)
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{
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lcddev.setxcmd=0x2A;
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lcddev.setycmd=0x2B;
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lcddev.wramcmd=0x2C;
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switch(direction)
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{
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case 0:
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lcddev.width=LCD_W;
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lcddev.height=LCD_H;
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LCD_WriteReg(0x36,(0<<3)|(1<<6)|(1<<7));//BGR==1,MY==0,MX==0,MV==0
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break;
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case 1:
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lcddev.width=LCD_H;
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lcddev.height=LCD_W;
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LCD_WriteReg(0x36,(0<<3)|(1<<7)|(1<<5));//BGR==1,MY==1,MX==0,MV==1
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break;
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case 2:
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lcddev.width=LCD_W;
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lcddev.height=LCD_H;
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LCD_WriteReg(0x36,(0<<3)|(0<<6)|(0<<7));//BGR==1,MY==0,MX==0,MV==0
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break;
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case 3:
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lcddev.width= LCD_H;
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lcddev.height=LCD_W;
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LCD_WriteReg(0x36,(0<<3)|(0<<7)|(1<<6)|(1<<5));//BGR==1,MY==1,MX==0,MV==1
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break;
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default:break;
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}
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}
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