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手上有块TFT,ILI9486 8位的，能正常显示，但无法读出ID和颜色值，移植EMwin出现问题，怀疑LCD_RD_DATA和LCD_ReadPoint函数有问题，请大家帮忙看看程序哪有问题？
#define Bank1_LCD_D ((uint32_t)0x6C000040) //disp Data ADDR
#define Bank1_LCD_C ((uint32_t)0x6C000000) //disp Reg ADDR
//写寄存器函数
//regval:寄存器值
void LCD_WR_REG(uint8_t index)
{
*(__IO uint8_t *) (Bank1_LCD_C)= index;
}
//写LCD数据
//data:要写入的值
void LCD_WR_DATA(uint8_t val)
{
*(__IO uint8_t *) (Bank1_LCD_D)= val;
}
//读LCD数据
//返回值:读到的值
uint16_t LCD_RD_DATA(void)
{
uint16_t a;
uint16_t low = 0;
uint16_t high = 0;
LCD_WR_REG(0x2e);
a=*(__IO uint8_t *) (Bank1_LCD_D);
a=*(__IO uint8_t *) (Bank1_LCD_D);
high=*(__IO uint8_t *) (Bank1_LCD_D);
low=*(__IO uint8_t *) (Bank1_LCD_D);
a= (high<<8)|(low&0xFF);
return a;
}
//写寄存器
//LCD_Reg:寄存器地址
//LCD_RegValue:要写入的数据
//void LCD_WriteReg(uint8_t index, vu16 LCD_RegValue)
//{
////// LCD->LCD_REG = LCD_Reg>>8; //写入要写的寄存器序号
//// LCD->LCD_REG = LCD_Reg;
//// LCD->LCD_RAM = LCD_RegValue>>8;//写入数据
//// LCD->LCD_RAM = LCD_RegValue;
//}
//读寄存器
//LCD_Reg:寄存器地址
//返回值:读到的数据
u16 LCD_ReadReg(vu16 LCD_Reg)
{
vu16 info;
LCD_WR_REG(LCD_Reg); //写入要读的寄存器序号
delay_us(5);
info=LCD_RD_DATA();
info<<=8;
info|=LCD_RD_DATA();
return info; //返回读到的值
}
//开始写GRAM
void LCD_WriteRAM_Prepare(void)
{
*(__IO uint8_t *) (Bank1_LCD_C)=0x2C;
}
//LCD写GRAM
//RGB_Code:颜色值
void LCD_WriteRAM(u16 RGB_Code)
{
*(__IO uint8_t *) (Bank1_LCD_D) = RGB_Code>>8;//写十六位GRAM
*(__IO uint8_t *) (Bank1_LCD_D) = RGB_Code&0xFF;
}
//当mdk -O1时间优化时需要设置
//延时i
void opt_delay(u8 i)
{
while(i--);
}
//读取个某点的颜色值
//x,y:坐标
//返回值:此点的颜色
u16 LCD_ReadPoint(u16 x,u16 y)
{
vu16 r=0,g=0,b=0;
if(x>=272||y>=480)return 0; //超过了范围,直接返回
LCD_SetCursor(x,y);
LCD_WR_REG(0X2E);//9486 发送读GRAM指令
LCD_RD_DATA(); //dummy Read
opt_delay(2);
return (LCD_RD_DATA()); //实际坐标颜色，要分2次读出
}
//LCD开启显示
void LCD_DisplayOn(void)
{
LCD_WR_REG(0X29); //开启显示
}
//LCD关闭显示
void LCD_DisplayOff(void)
{
LCD_WR_REG(0X28); //关闭显示
}
//设置光标位置
//Xpos:横坐标
//Ypos:纵坐标
void LCD_SetCursor(u16 Xpos, u16 Ypos)
{
LCD_WR_REG(0x2A);
LCD_WR_DATA((Xpos+24)>>8);
LCD_WR_DATA(0xFF&(Xpos+24));
// LCD_WR_DATA((272-1)>>8);
// LCD_WR_DATA((272-1));
LCD_WR_REG(0x2B);
LCD_WR_DATA(Ypos>>8);
LCD_WR_DATA(0x00FF&Ypos);
// LCD_WR_DATA((480-1)>>8);
// LCD_WR_DATA((480-1));
}
//画点
//x,y:坐标
//POINT_COLOR:此点的颜色
void LCD_DrawPoint(u16 x,u16 y)
{
LCD_SetCursor(x,y); //设置光标位置
LCD_WriteRAM_Prepare(); //开始写入GRAM
LCD_WriteRAM(POINT_COLOR);
}
//设置窗口,并自动设置画点坐标到窗口左上角(sx,sy).
//sx,sy:窗口起始坐标(左上角)
//width,height:窗口宽度和高度,必须大于0!!
//窗体大小:width*height.
//68042,横屏时不支持窗口设置!!
void LCD_Set_Window(u16 sx,u16 sy,u16 width,u16 height)
{
width=sx+width-1;
height=sy+height-1;
LCD_WR_REG(0x2A);
LCD_WR_DATA(sx>>8);
LCD_WR_DATA(sx&0XFF);
LCD_WR_DATA(width>>8);
LCD_WR_DATA(width&0XFF);
LCD_WR_REG(0x2B);
LCD_WR_DATA(sy>>8);
LCD_WR_DATA(sy&0XFF);
LCD_WR_DATA(height>>8);
LCD_WR_DATA(height&0XFF);
}
//初始化lcd
//该初始化函数可以初始化各种ILI93XX液晶,但是其他函数是基于ILI9320的!!!
//在其他型号的驱动芯片上没有测试!
void LCD_Init(void)
{
vu32 i=0;
GPIO_InitTypeDef GPIO_InitStructure;
FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure;
FSMC_NORSRAMTimingInitTypeDef readWriteTiming;
FSMC_NORSRAMTimingInitTypeDef writeTiming;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB|RCC_AHB1Periph_GPIOC|RCC_AHB1Periph_GPIOD|RCC_AHB1Periph_GPIOE|RCC_AHB1Periph_GPIOF|RCC_AHB1Periph_GPIOG, ENABLE);//使能PD,PE,PF,PG时钟
RCC_AHB3PeriphClockCmd(RCC_AHB3Periph_FSMC,ENABLE);//使能FSMC时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;//PC6 推挽输出,控制背光
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;//普通输出模式
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//100MHz
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉
GPIO_Init(GPIOC, &GPIO_InitStructure);//初始化 //PC6 推挽输出,控制背光
GPIO_ResetBits(GPIOC,GPIO_Pin_6); //关闭背光
GPIO_InitStructure.GPIO_Pin= GPIO_Pin_11;//PB11 推挽输出,控制LCD复位
GPIO_Init(GPIOB,&GPIO_InitStructure);//初始化 //PB11 推挽输出,控制LCD复位
GPIO_InitStructure.GPIO_Pin = (3<<0)|(3<<4)|(7<<8)|(3<<14);//PD0,1,4,5,8,9,10,14,15 AF OUT
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用输出
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉
GPIO_Init(GPIOD, &GPIO_InitStructure);//初始化
GPIO_InitStructure.GPIO_Pin = (0X1FF<<7);//PE7~15,AF OUT
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用输出
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉
GPIO_Init(GPIOE, &GPIO_InitStructure);//初始化
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;//PF12,FSMC_A6
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用输出
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉
GPIO_Init(GPIOF, &GPIO_InitStructure);//初始化
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;//PG12,LCD_CS
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用输出
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉
GPIO_Init(GPIOG, &GPIO_InitStructure);//初始化
GPIO_PinAFConfig(GPIOD,GPIO_PinSource0,GPIO_AF_FSMC);//PD0,AF12
GPIO_PinAFConfig(GPIOD,GPIO_PinSource1,GPIO_AF_FSMC);//PD1,AF12
GPIO_PinAFConfig(GPIOD,GPIO_PinSource4,GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOD,GPIO_PinSource5,GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOD,GPIO_PinSource8,GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOD,GPIO_PinSource9,GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOD,GPIO_PinSource10,GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOD,GPIO_PinSource14,GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOD,GPIO_PinSource15,GPIO_AF_FSMC);//PD15,AF12
GPIO_PinAFConfig(GPIOE,GPIO_PinSource7,GPIO_AF_FSMC);//PE7,AF12
GPIO_PinAFConfig(GPIOE,GPIO_PinSource8,GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE,GPIO_PinSource9,GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE,GPIO_PinSource10,GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE,GPIO_PinSource11,GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE,GPIO_PinSource12,GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE,GPIO_PinSource13,GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE,GPIO_PinSource14,GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE,GPIO_PinSource15,GPIO_AF_FSMC);//PE15,AF12
GPIO_PinAFConfig(GPIOF,GPIO_PinSource12,GPIO_AF_FSMC);//PF12,AF12
GPIO_PinAFConfig(GPIOG,GPIO_PinSource12,GPIO_AF_FSMC);
readWriteTiming.FSMC_AddressSetupTime = 0XF; //地址建立时间（ADDSET）为16个HCLK 1/168M=6ns*16=96ns
readWriteTiming.FSMC_AddressHoldTime = 0x00; //地址保持时间（ADDHLD）模式A未用到
readWriteTiming.FSMC_DataSetupTime = 60; //数据保存时间为60个HCLK =6*60=360ns
readWriteTiming.FSMC_BusTurnAroundDuration = 0x00;
readWriteTiming.FSMC_CLKDivision = 0x00;
readWriteTiming.FSMC_DataLatency = 0x00;
readWriteTiming.FSMC_AccessMode = FSMC_AccessMode_A; //模式A
writeTiming.FSMC_AddressSetupTime =9; //地址建立时间（ADDSET）为9个HCLK =54ns
writeTiming.FSMC_AddressHoldTime = 0x00; //地址保持时间（A
writeTiming.FSMC_DataSetupTime = 8; //数据保存时间为6ns*9个HCLK=54ns
writeTiming.FSMC_BusTurnAroundDuration = 0x00;
writeTiming.FSMC_CLKDivision = 0x00;
writeTiming.FSMC_DataLatency = 0x00;
writeTiming.FSMC_AccessMode = FSMC_AccessMode_A; //模式A
FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM4;// 这里我们使用NE4 ，也就对应BTCR[6],[7]。
FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable; // 不复用数据地址
FSMC_NORSRAMInitStructure.FSMC_MemoryType =FSMC_MemoryType_SRAM;// FSMC_MemoryType_SRAM; //SRAM
FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_8b;//存储器数据宽度为16bit
FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode =FSMC_BurstAccessMode_Disable;// FSMC_BurstAccessMode_Disable;
FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;
FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait=FSMC_AsynchronousWait_Disable;
FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;
FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable; // 存储器写使能
FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;
FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Enable; // 读写使用不同的时序
FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &readWriteTiming; //读写时序
FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &writeTiming; //写时序
FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure); //初始化FSMC配置
FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM4, ENABLE); // 使能BANK1
/*===========LCD 复位=======================*/
GPIO_ResetBits(GPIOB, GPIO_Pin_11);
delay_ms(150); // delay 50 ms
GPIO_SetBits(GPIOB, GPIO_Pin_11 );
delay_ms(150); // delay 50 ms ;
//尝试9486 ID的读取
LCD_WR_REG(0XD3);
lcdid=LCD_RD_DATA(); //dummy read
lcdid=LCD_RD_DATA(); //读到0X00
lcdid=LCD_RD_DATA(); //读取94
lcdid<<=8;
lcdid|=LCD_RD_DATA(); //读取86
printf(" LCD ID:%x\r\n",lcdid); //打印LCD ID
// if(lcddev.id==0X9486) //9486初始化
if(1) //9486初始化
{
LCD_WR_REG(0x11);
delay_ms(120);
LCD_WR_REG(0x13);
delay_ms(120);
LCD_WR_REG(0xD0);//电源设置，有3个参数，P115，色彩过白就调节这个3个参数
LCD_WR_DATA(0x07);//P115
LCD_WR_DATA(0x45);//P115
LCD_WR_DATA(0x18);//P115-116
LCD_WR_REG( 0xD1);
LCD_WR_DATA( 0x03);
LCD_WR_DATA( 0x10);//VCM
LCD_WR_DATA( 0x05);//VDV
// LCD_WR_REG(0x00D1);//VCOM Control，有3个参数，P117
// LCD_WR_INITDATA(0x0000);//P118
// LCD_WR_INITDATA(0x0001);//P117
// LCD_WR_INITDATA(0x001F);//P117-118
LCD_WR_REG(0xD2);//Power Setting for Normal Mode，有2个参数，P119
LCD_WR_DATA(0x01);//P118
LCD_WR_DATA(0x11);//P119
LCD_WR_REG(0xC0);//Panel Driving Setting，有6个参数，P102，主要设置行扫描
LCD_WR_DATA(0x00);//P102-103 GS=0
LCD_WR_DATA(0x3B);//P103，(0x3B + 1) * 8 = 480行
LCD_WR_DATA(0x00);//P103
LCD_WR_DATA(0x00);//P103
LCD_WR_DATA(0x11);//P103-104
// LCD_WR_INITDATA(0x0000);//P103-104
LCD_WR_REG(0xC1);//Didsplay Timing Setting for Normal Mode，有3个参数，P106
LCD_WR_DATA(0x10);//P106
LCD_WR_DATA(0x0B);//P106
LCD_WR_DATA(0x88);//P107
LCD_WR_REG(0xC5);//Frame Rate and Inversion control，有1个参数，P112
LCD_WR_DATA(0x00);//P112
LCD_WR_REG(0xC8);//Gamma Setting，有12个参数，P114
LCD_WR_DATA(0x00);//P114
LCD_WR_DATA(0x14);//P114
LCD_WR_DATA(0x33);//P114
LCD_WR_DATA(0x10);//P114
LCD_WR_DATA(0x00);//P114
LCD_WR_DATA(0x16);//P114
LCD_WR_DATA(0x44);//P114
LCD_WR_DATA(0x36);//P114
LCD_WR_DATA(0x77);//P114
LCD_WR_DATA(0x00);//P114
LCD_WR_DATA(0x0F);//P114
LCD_WR_DATA(0x00);//P114
LCD_WR_REG(0x30); //
LCD_WR_DATA(0x00); //
LCD_WR_DATA(0x18); //
LCD_WR_DATA(0x01); //
LCD_WR_DATA(0x10); //
LCD_WR_REG(0x3A);//Set Pixel Format，有1个参数，P86
LCD_WR_DATA(0x55);//0x0055为65K色，0x0066为26万色，P86
LCD_WR_REG(0x36); //Set_address_mode
LCD_WR_DATA(0x00); //竖屏，从左下角开始，从左到右，从下到上
LCD_WR_REG(0x2A);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x01);
LCD_WR_DATA(0x27);
LCD_WR_REG(0x2B);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x01);
LCD_WR_DATA(0xDF);
delay_ms(120);
LCD_WR_REG(0x29);
}
LCD_LED=1; //点亮背光
LCD_Clear(RED);
}
//清屏函数
//color:要清屏的填充色
void LCD_Clear(u16 color)
{
u32 index=0;
u32 totalpoint=272;
uint8_t color1;
uint8_t color2;
color1=color>>8;
color2=color&0xff;
totalpoint*=480; //得到总点数
LCD_SetCursor(0x00,0x0000); //设置光标位置
LCD_WriteRAM_Prepare(); //开始写入GRAM
for(index=0;index<totalpoint;index++)
{
// LCD_WriteRAM(color);
LCD_WR_DATA(color1);
LCD_WR_DATA(color2);
}
} |
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发表于 2015-4-29 13:00:08
发表于 2015-4-29 17:43:51
楼主
