404 lines
9.3 KiB
C
404 lines
9.3 KiB
C
#include "sys.h"
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#include "Lcd_Driver.h"
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#include "LCD_Config.h"
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#include "delay.h"
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//嵌入式开发网
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//淘宝网站：http://mcudev.taobao.com
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//本测试程序使用的是模拟SPI接口驱动
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//可自由更改接口IO配置，使用任意最少4 IO即可完成本款液晶驱动显示
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/******************************************************************************
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接口定义在Lcd_Driver.h内定义，请根据接线修改并修改相应IO初始化LCD_GPIO_Init()
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#define LCD_BLK //PB1 //背光控制
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#define LCD_RS //PC5 //命令数据切换
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#define LCD_CS //PB12 //片选
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#define LCD_SDO/RST //PB14 //复位
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#define LCD_SCL //PB13 //时钟线
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#define LCD_SDA //PB15 //数据线
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*******************************************************************************/
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//液晶IO初始化配置
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void LCD_GPIO_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_GPIOB | RCC_AHB1Periph_GPIOC ,ENABLE);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 |GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 |GPIO_Pin_15;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;//普通输出模式
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;//普通输出模式
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉
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GPIO_Init(GPIOC, &GPIO_InitStructure);
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GPIO_SetBits(GPIOB,GPIO_Pin_14);//MISO引脚输出为高
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LCD_BLK_SET;//开启背光
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LCD_BLK_CLR;//关闭背光
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LCD_BLK_SET;//开启背光
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}
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/****************************************************************************
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* 名 称：void SPIv_WriteData(u8 Data)
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* 功 能：STM32_模拟SPI写一个字节数据底层函数
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* 入口参数：Data
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* 出口参数：无
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* 说 明：STM32_模拟SPI读写一个字节数据底层函数
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****************************************************************************/
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void SPI_WriteData(u8 Data)
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{
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unsigned char i=0;
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for(i=8;i>0;i--)
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{
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if(Data&0x80)
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LCD_SDA_SET; //输出数据
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else LCD_SDA_CLR;
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LCD_SCL_CLR;
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LCD_SCL_SET;
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Data<<=1;
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}
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}
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/****************************************************************************
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* 名 称：void Lcd_WriteIndex(u8 idx)
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* 功 能：写 ST7735S 控制器寄存器地址
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* 入口参数：idx 寄存器地址
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* 出口参数：无
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* 说 明：调用前需先选中控制器，内部函数
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* 调用方法：Lcd_WriteIndex(0x00);
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****************************************************************************/
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void Lcd_WriteIndex(u8 Index)
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{
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//SPI 写命令时序开始
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LCD_CS_CLR;
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LCD_RS_CLR; //写入命令
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SPI_WriteData(Index);
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LCD_CS_SET;
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}
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/****************************************************************************
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* 名 称：void Lcd_WriteData(u8 dat)
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* 功 能：写 ST7735S 寄存器数据
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* 入口参数：dat 寄存器数据
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* 出口参数：无
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* 说 明：向控制器指定地址写入数据，调用前需先写寄存器地址，内部函数
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* 调用方法：Lcd_WriteData(0x30)
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****************************************************************************/
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void Lcd_WriteData(u8 Data)
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{
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LCD_CS_CLR;
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LCD_RS_SET; //写入数据
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SPI_WriteData(Data);
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LCD_CS_SET;
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}
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//写寄存器函数
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void Lcd_WriteReg(u8 Index,u8 Data)
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{
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Lcd_WriteIndex(Index);
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Lcd_WriteData(Data);
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}
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//向液晶屏写一个16位数据
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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_WriteData(Data>>8); //写入高8位数据
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SPI_WriteData(Data); //写入低8位数据
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LCD_CS_SET;
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}
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//液晶屏复位函数
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void Lcd_Reset(void)
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{
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LCD_RST_CLR;
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delay_ms(100);
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LCD_RST_SET;
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delay_ms(100);
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}
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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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//设置LCD参数
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//方便进行横竖屏模式切换
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void LCD_SetParam(void)
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{
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lcddev.wramcmd=0x2C;
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#if USE_HORIZONTAL==1 //使用横屏
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lcddev.dir=1;//横屏
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lcddev.width=160;
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lcddev.height=128;
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lcddev.setxcmd=0x2A;
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lcddev.setycmd=0x2B;
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Lcd_WriteReg(0x36,0xA0);
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#else//竖屏
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lcddev.dir=0;//竖屏
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lcddev.width=128;
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lcddev.height=160;
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lcddev.setxcmd=0x2A;
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lcddev.setycmd=0x2B;
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Lcd_WriteReg(0x36,0xC0);
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#endif
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}
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/*************************************************
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函数名：LCD_Set_Region
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功能：设置lcd显示区域，在此区域写点数据自动换行
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入口参数：xy起点和终点,Y_IncMode表示先自增y再自增x
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返回值：无
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*************************************************/
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void Lcd_SetRegion(u16 x_start,u16 y_start,u16 x_end,u16 y_end)
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{
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#if USE_HORIZONTAL==1 //使用横屏
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Lcd_WriteIndex(0x2a);
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Lcd_WriteData(0x00);
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Lcd_WriteData(x_start);
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Lcd_WriteData(0x00);
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Lcd_WriteData(x_end);
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Lcd_WriteIndex(0x2b);
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Lcd_WriteData(0x00);
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Lcd_WriteData(y_start);
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Lcd_WriteData(0x00);
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Lcd_WriteData(y_end);
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#else
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Lcd_WriteIndex(0x2a);
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Lcd_WriteData(0x00);
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Lcd_WriteData(x_start);
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Lcd_WriteData(0x00);
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Lcd_WriteData(x_end);
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Lcd_WriteIndex(0x2b);
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Lcd_WriteData(0x00);
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Lcd_WriteData(y_start);
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Lcd_WriteData(0x00);
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Lcd_WriteData(y_end);
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#endif
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Lcd_WriteIndex(0x2c); //开始写入GRAM
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}
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/*************************************************
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函数名：LCD_Set_XY
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功能：设置lcd显示起始点
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入口参数：xy坐标
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返回值：无
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*************************************************/
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void Lcd_SetXY(u16 x,u16 y)
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{
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//Lcd_SetRegion(x,y,x,y);
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#if USE_HORIZONTAL==1 //使用横屏
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Lcd_SetRegion(x+1,y+2,x+1,y+2);
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#else
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Lcd_SetRegion(x+2,y+1,x+2,y+1);
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#endif
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}
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/*************************************************
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函数名：LCD_DrawPoint
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功能：画一个点
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入口参数：无
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返回值：无
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*************************************************/
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void Gui_DrawPoint(u16 x,u16 y,u16 Data)
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{
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//Lcd_SetRegion(x,y,x+1,y+1);
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#if USE_HORIZONTAL==1 //使用横屏
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Lcd_SetRegion(x+1,y+2,x+2,y+3);
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#else
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Lcd_SetRegion(x+2,y+1,x+3,y+2);
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#endif
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Lcd_WriteData(Data>>8);
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Lcd_WriteData(Data);
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}
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/*****************************************
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函数功能：读TFT某一点的颜色
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出口参数：color 点颜色值
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******************************************/
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//unsigned int Lcd_ReadPoint(u16 x,u16 y)
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//{
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// unsigned int Data;
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// Lcd_SetXY(x,y);
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// Lcd_WriteData(Data);
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// return Data;
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//}
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/*************************************************
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函数名：Lcd_Clear
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功能：全屏清屏函数
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入口参数：填充颜色COLOR
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返回值：无
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*************************************************/
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void Lcd_Clear(u16 Color)
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{
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unsigned int i,m;
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#if USE_HORIZONTAL==1 //使用横屏
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//Lcd_SetRegion(2,1,X_MAX_PIXEL+1,Y_MAX_PIXEL);
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Lcd_SetRegion(1,2,X_MAX_PIXEL,Y_MAX_PIXEL+1);
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Lcd_WriteIndex(0x2C);
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for(i=0;i<Y_MAX_PIXEL;i++)
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for(m=0;m<X_MAX_PIXEL;m++)
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{
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Lcd_WriteData(Color>>8);
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Lcd_WriteData(Color);
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}
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#else
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Lcd_SetRegion(2,1,X_MAX_PIXEL+1,Y_MAX_PIXEL);
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Lcd_WriteIndex(0x2C);
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for(i=0;i<Y_MAX_PIXEL;i++)
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for(m=0;m<X_MAX_PIXEL;m++)
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{
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Lcd_WriteData(Color>>8);
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Lcd_WriteData(Color);
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}
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#endif
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}
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void Lcd_Init(void)
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{
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LCD_GPIO_Init();//使用模拟SPI 初始化IO接口
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Lcd_Reset(); //复位液晶屏
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Lcd_WriteIndex(0x11);//Sleep exit
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delay_ms (200);
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Lcd_WriteIndex(0xB1);
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Lcd_WriteData(0x05);
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Lcd_WriteData(0x3C);
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Lcd_WriteData(0x3C);
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Lcd_WriteIndex(0xB2);
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Lcd_WriteData(0x05);
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Lcd_WriteData(0x3C);
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Lcd_WriteData(0x3C);
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Lcd_WriteIndex(0xB3);
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Lcd_WriteData(0x05);
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Lcd_WriteData(0x3C);
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Lcd_WriteData(0x3C);
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Lcd_WriteData(0x05);
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Lcd_WriteData(0x3C);
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Lcd_WriteData(0x3C);
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//------------------------------------End ST7735S Frame Rate---------------------------------//
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Lcd_WriteIndex(0xB4); //Dot inversion
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Lcd_WriteData(0x03);
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//------------------------------------ST7735S Power Sequence---------------------------------//
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Lcd_WriteIndex(0xC0);
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Lcd_WriteData(0x28);
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Lcd_WriteData(0x08);
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Lcd_WriteData(0x04);
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Lcd_WriteIndex(0xC1);
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Lcd_WriteData(0XC0);
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Lcd_WriteIndex(0xC2);
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Lcd_WriteData(0x0D);
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Lcd_WriteData(0x00);
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Lcd_WriteIndex(0xC3);
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Lcd_WriteData(0x8D);
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Lcd_WriteData(0x2A);
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Lcd_WriteIndex(0xC4);
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Lcd_WriteData(0x8D);
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Lcd_WriteData(0xEE);
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//---------------------------------End ST7735S Power Sequence-------------------------------------//
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Lcd_WriteIndex(0xC5); //VCOM
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Lcd_WriteData(0x1A);
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Lcd_WriteIndex(0x36); //MX, MY, RGB mode
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Lcd_WriteData(0xC0);
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//------------------------------------ST7735S Gamma Sequence---------------------------------//
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Lcd_WriteIndex(0xE0);
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Lcd_WriteData(0x04);
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Lcd_WriteData(0x22);
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Lcd_WriteData(0x07);
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Lcd_WriteData(0x0A);
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Lcd_WriteData(0x2E);
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Lcd_WriteData(0x30);
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Lcd_WriteData(0x25);
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Lcd_WriteData(0x2A);
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Lcd_WriteData(0x28);
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Lcd_WriteData(0x26);
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Lcd_WriteData(0x2E);
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Lcd_WriteData(0x3A);
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Lcd_WriteData(0x00);
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Lcd_WriteData(0x01);
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Lcd_WriteData(0x03);
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Lcd_WriteData(0x13);
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Lcd_WriteIndex(0xE1);
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Lcd_WriteData(0x04);
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Lcd_WriteData(0x16);
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Lcd_WriteData(0x06);
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Lcd_WriteData(0x0D);
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Lcd_WriteData(0x2D);
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Lcd_WriteData(0x26);
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Lcd_WriteData(0x23);
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Lcd_WriteData(0x27);
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Lcd_WriteData(0x27);
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Lcd_WriteData(0x25);
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Lcd_WriteData(0x2D);
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Lcd_WriteData(0x3B);
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Lcd_WriteData(0x00);
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Lcd_WriteData(0x01);
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Lcd_WriteData(0x04);
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Lcd_WriteData(0x13);
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//------------------------------------End ST7735S Gamma Sequence-----------------------------//
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Lcd_WriteIndex(0x3A); //65k mode
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Lcd_WriteData(0x05);
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Lcd_WriteIndex(0x29); //Display on
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LCD_SetParam();//设置LCD参数
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}
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