#include "lcd_driver.h"
static uint16_t SPI_TIMEOUT_UserCallback(uint8_t errorCode);
//液晶IO初始化配置
void LCD_Driver_Init(void)
{
SPI_InitTypeDef SPI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* 使能 LCD_SPI 及GPIO 时钟 */
/*!< SPI_LCD_SPI_CS_GPIO, SPI_LCD_SPI_MOSI_GPIO,
SPI_LCD_SPI_MISO_GPIO,SPI_LCD_SPI_SCK_GPIO 时钟使能 */
RCC_AHB1PeriphClockCmd (LCD_SPI_SCK_GPIO_CLK|LCD_SPI_MOSI_GPIO_CLK|LCD_CS_GPIO_CLK, ENABLE);
/*!< SPI_LCD_SPI 时钟使能 */
LCD_SPI_CLK_INIT(LCD_SPI_CLK, ENABLE);
//设置引脚复用
GPIO_PinAFConfig(LCD_SPI_SCK_GPIO_PORT,LCD_SPI_SCK_PINSOURCE,LCD_SPI_SCK_AF);
GPIO_PinAFConfig(LCD_SPI_MOSI_GPIO_PORT,LCD_SPI_MOSI_PINSOURCE,LCD_SPI_MOSI_AF);
GPIO_PinAFConfig(LCD_CS_GPIO_PORT,LCD_SPI_CS_PINSOURCE,LCD_SPI_CS_AF);
/*!< 配置 SPI_LCD_SPI 引脚: SCK */
GPIO_InitStructure.GPIO_Pin = LCD_SPI_SCK_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(LCD_SPI_SCK_GPIO_PORT, &GPIO_InitStructure);
/*!< 配置 SPI_LCD_SPI 引脚: MOSI */
GPIO_InitStructure.GPIO_Pin = LCD_SPI_MOSI_PIN;
GPIO_Init(LCD_SPI_MOSI_GPIO_PORT, &GPIO_InitStructure);
/*!< 配置 SPI_LCD_SPI 引脚: CS */
GPIO_InitStructure.GPIO_Pin = LCD_CS_PIN;
GPIO_Init(LCD_CS_GPIO_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = LCD_DC_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_Init(LCD_DC_GPIO_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = LCD_RES_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_Init(LCD_RES_GPIO_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = LCD_BLK_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_Init(LCD_BLK_GPIO_PORT, &GPIO_InitStructure);
/* 停止信号 LCD: CS引脚高电平*/
//SPI_LCD_CS_HIGH();
/* LCD_SPI 模式配置 */
// LCD芯片 支持SPI模式0及模式3,据此设置CPOL CPHA
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Hard;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(LCD_SPI, &SPI_InitStructure);
/* 使能 LCD_SPI */
SPI_Cmd(LCD_SPI, ENABLE);
SPI_SSOutputCmd(LCD_SPI,ENABLE);
SPI_CalculateCRC(LCD_SPI,DISABLE);
SPI_ClearFlag(LCD_SPI,SPI_FLAG_TXE);
SPI_ClearFlag(LCD_SPI,SPI_FLAG_RXNE);
}
//向SPI总线传输一个8位数据
void SPI_WriteData(u8 Data)
{
while(SPI_I2S_GetFlagStatus(LCD_SPI,SPI_I2S_FLAG_TXE)==RESET);
SPI_SendData(LCD_SPI,Data);
// unsigned char i=0;
// for(i=8;i>0;i--)
// {
// if(Data&0x80)
// LCD_SDA_SET; //输出数据
// else LCD_SDA_CLR;
//
// LCD_SCL_CLR;
// LCD_SCL_SET;
// Data<<=1;
// }
}
//向液晶屏写一个8位指令
void Lcd_WriteIndex(u8 Index)
{
//SPI 写命令时序开始
SPI_LCD_CS_LOW();
SPI_LCD_DC_LOW();
SPI_WriteData(Index);
SPI_LCD_CS_HIGH();
}
//向液晶屏写一个8位数据
void Lcd_WriteData(u8 Data)
{
SPI_LCD_CS_LOW();
SPI_LCD_DC_HIGH();
SPI_WriteData(Data);
SPI_LCD_CS_HIGH();
}
//向液晶屏写一个16位数据
void LCD_WriteData_16Bit(u16 Data)
{
SPI_LCD_CS_LOW();
SPI_LCD_DC_HIGH();
SPI_WriteData(Data>>8); //写入高8位数据
SPI_WriteData(Data); //写入低8位数据
SPI_LCD_CS_HIGH();
}
void Lcd_WriteReg(u8 Index,u8 Data)
{
Lcd_WriteIndex(Index);
Lcd_WriteData(Data);
}
void Lcd_Reset(void)
{
SPI_LCD_RES_LOW();
delay_ms(100);
SPI_LCD_RES_HIGH();
delay_ms(50);
}
//LCD Init For 1.44Inch LCD Panel with ST7735R.
void Lcd_Init(void)
{
LCD_Driver_Init();
Lcd_Reset(); //Reset before LCD Init.
//LCD Init For 1.44Inch LCD Panel with ST7735R.
Lcd_WriteIndex(0x11);//Sleep exit
delay_ms (120);
//ST7735R Frame Rate
Lcd_WriteIndex(0xB1);
Lcd_WriteData(0x01);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x2D);
Lcd_WriteIndex(0xB2);
Lcd_WriteData(0x01);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x2D);
Lcd_WriteIndex(0xB3);
Lcd_WriteData(0x01);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x2D);
Lcd_WriteData(0x01);
Lcd_WriteData(0x2C);
Lcd_WriteData(0x2D);
Lcd_WriteIndex(0xB4); //Column inversion
Lcd_WriteData(0x07);
//ST7735R Power Sequence
Lcd_WriteIndex(0xC0);
Lcd_WriteData(0xA2);
Lcd_WriteData(0x02);
Lcd_WriteData(0x84);
Lcd_WriteIndex(0xC1);
Lcd_WriteData(0xC5);
Lcd_WriteIndex(0xC2);
Lcd_WriteData(0x0A);
Lcd_WriteData(0x00);
Lcd_WriteIndex(0xC3);
Lcd_WriteData(0x8A);
Lcd_WriteData(0x2A);
Lcd_WriteIndex(0xC4);
Lcd_WriteData(0x8A);
Lcd_WriteData(0xEE);
Lcd_WriteIndex(0xC5); //VCOM
Lcd_WriteData(0x0E);
Lcd_WriteIndex(0x36); //MX, MY, RGB mode
Lcd_WriteData(0xC0);
//ST7735R Gamma Sequence
Lcd_WriteIndex(0xe0);
Lcd_WriteData(0x0f);
Lcd_WriteData(0x1a);
Lcd_WriteData(0x0f);
Lcd_WriteData(0x18);
Lcd_WriteData(0x2f);
Lcd_WriteData(0x28);
Lcd_WriteData(0x20);
Lcd_WriteData(0x22);
Lcd_WriteData(0x1f);
Lcd_WriteData(0x1b);
Lcd_WriteData(0x23);
Lcd_WriteData(0x37);
Lcd_WriteData(0x00);
Lcd_WriteData(0x07);
Lcd_WriteData(0x02);
Lcd_WriteData(0x10);
Lcd_WriteIndex(0xe1);
Lcd_WriteData(0x0f);
Lcd_WriteData(0x1b);
Lcd_WriteData(0x0f);
Lcd_WriteData(0x17);
Lcd_WriteData(0x33);
Lcd_WriteData(0x2c);
Lcd_WriteData(0x29);
Lcd_WriteData(0x2e);
Lcd_WriteData(0x30);
Lcd_WriteData(0x30);
Lcd_WriteData(0x39);
Lcd_WriteData(0x3f);
Lcd_WriteData(0x00);
Lcd_WriteData(0x07);
Lcd_WriteData(0x03);
Lcd_WriteData(0x10);
Lcd_WriteIndex(0x2a);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0x7f);
Lcd_WriteIndex(0x2b);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0x00);
Lcd_WriteData(0x9f);
Lcd_WriteIndex(0xF0); //Enable test command
Lcd_WriteData(0x01);
Lcd_WriteIndex(0xF6); //Disable ram power save mode
Lcd_WriteData(0x00);
Lcd_WriteIndex(0x3A); //65k mode
Lcd_WriteData(0x05);
Lcd_WriteIndex(0x29);//Display on
}
/*************************************************
函数名:LCD_Set_Region
功能:设置lcd显示区域,在此区域写点数据自动换行
入口参数:xy起点和终点
返回值:无
*************************************************/
void Lcd_SetRegion(u16 x_start,u16 y_start,u16 x_end,u16 y_end)
{
Lcd_WriteIndex(0x2a);
Lcd_WriteData(0x00);
Lcd_WriteData(x_start);//Lcd_WriteData(x_start+2);
Lcd_WriteData(0x00);
Lcd_WriteData(x_end+2);
Lcd_WriteIndex(0x2b);
Lcd_WriteData(0x00);
Lcd_WriteData(y_start+0);
Lcd_WriteData(0x00);
Lcd_WriteData(y_end+1);
Lcd_WriteIndex(0x2c);
}
/*************************************************
函数名:LCD_Set_XY
功能:设置lcd显示起始点
入口参数:xy坐标
返回值:无
*************************************************/
void Lcd_SetXY(u16 x,u16 y)
{
Lcd_SetRegion(x,y,x,y);
}
/*************************************************
函数名:LCD_DrawPoint
功能:画一个点
入口参数:无
返回值:无
*************************************************/
void Gui_DrawPoint(u16 x,u16 y,u16 Data)
{
Lcd_SetRegion(x,y,x+1,y+1);
LCD_WriteData_16Bit(Data);
}
/*****************************************
函数功能:读TFT某一点的颜色
出口参数:color 点颜色值
******************************************/
unsigned int Lcd_ReadPoint(u16 x,u16 y)
{
unsigned int Data;
Lcd_SetXY(x,y);
//Lcd_ReadData();//丢掉无用字节
//Data=Lcd_ReadData();
Lcd_WriteData(Data);
return Data;
}
/*************************************************
函数名:Lcd_Clear
功能:全屏清屏函数
入口参数:填充颜色COLOR
返回值:无
*************************************************/
void Lcd_Clear(u16 Color)
{
unsigned int i,m;
Lcd_SetRegion(0,0,X_MAX_PIXEL-1,Y_MAX_PIXEL-1);
Lcd_WriteIndex(0x2C);
for(i=0;i<X_MAX_PIXEL;i++)
for(m=0;m<Y_MAX_PIXEL;m++)
{
LCD_WriteData_16Bit(Color);
}
}
#ifndef _LCD_DRIVER_H
#define _LCD_DRIVER_H
#include "main.h"
#define X_MAX_PIXEL 128
#define Y_MAX_PIXEL 160
#define RED 0xf800
#define GREEN 0x07e0
#define BLUE 0x001f
#define WHITE 0xffff
#define BLACK 0x0000
#define YELLOW 0xFFE0
#define GRAY0 0xEF7D //灰色0 3165 00110 001011 00101
#define GRAY1 0x8410 //灰色1 00000 000000 00000
#define GRAY2 0x4208 //灰色2 1111111111011111
#define SPIT_FLAG_TIMEOUT ((uint32_t)0x1000)
/*SPI接口定义-开头****************************/
#define LCD_SPI SPI1
#define LCD_SPI_CLK RCC_APB2Periph_SPI1
#define LCD_SPI_CLK_INIT RCC_APB2PeriphClockCmd
#define LCD_SPI_SCK_PIN GPIO_Pin_3
#define LCD_SPI_SCK_GPIO_PORT GPIOB
#define LCD_SPI_SCK_GPIO_CLK RCC_AHB1Periph_GPIOB
#define LCD_SPI_SCK_PINSOURCE GPIO_PinSource3
#define LCD_SPI_SCK_AF GPIO_AF_SPI1
#define LCD_SPI_MOSI_PIN GPIO_Pin_5
#define LCD_SPI_MOSI_GPIO_PORT GPIOB
#define LCD_SPI_MOSI_GPIO_CLK RCC_AHB1Periph_GPIOB
#define LCD_SPI_MOSI_PINSOURCE GPIO_PinSource5
#define LCD_SPI_MOSI_AF GPIO_AF_SPI1
#define LCD_CS_PIN GPIO_Pin_15
#define LCD_CS_GPIO_PORT GPIOA
#define LCD_CS_GPIO_CLK RCC_AHB1Periph_GPIOA
#define LCD_SPI_CS_PINSOURCE GPIO_PinSource15
#define LCD_SPI_CS_AF GPIO_AF_SPI1
#define LCD_DC_PIN GPIO_Pin_4
#define LCD_DC_GPIO_PORT GPIOB
#define LCD_DC_GPIO_CLK RCC_AHB1Periph_GPIOB
#define LCD_RES_PIN GPIO_Pin_11
#define LCD_RES_GPIO_PORT GPIOA
#define LCD_RES_GPIO_CLK RCC_AHB1Periph_GPIOA
#define LCD_BLK_PIN GPIO_Pin_12
#define LCD_BLK_GPIO_PORT GPIOA
#define LCD_BLK_GPIO_CLK RCC_AHB1Periph_GPIOA
#define SPI_LCD_CS_LOW() {LCD_CS_GPIO_PORT->BSRRH=LCD_CS_PIN;}
#define SPI_LCD_CS_HIGH() {LCD_CS_GPIO_PORT->BSRRL=LCD_CS_PIN;}
#define SPI_LCD_DC_LOW() {LCD_DC_GPIO_PORT->BSRRH=LCD_DC_PIN;}
#define SPI_LCD_DC_HIGH() {LCD_DC_GPIO_PORT->BSRRL=LCD_DC_PIN;}
#define SPI_LCD_RES_LOW() {LCD_RES_GPIO_PORT->BSRRH=LCD_RES_PIN;}
#define SPI_LCD_RES_HIGH() {LCD_RES_GPIO_PORT->BSRRL=LCD_RES_PIN;}
#define SPI_LCD_BLK_LOW() {LCD_BLK_GPIO_PORT->BSRRH=LCD_BLK_PIN;}
#define SPI_LCD_BLK_HIGH() {LCD_BLK_GPIO_PORT->BSRRL=LCD_BLK_PIN;}
#define SPI_LCD_CS_LOW() SPI_Cmd(LCD_SPI,ENABLE)
#define SPI_LCD_CS_HIGH() SPI_Cmd(LCD_SPI,DISABLE)
void Lcd_Init(void);
#endif