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- 2014-4-15
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我调一块3.5寸液晶，320*480的，是ili9486L的芯片，使用stm32F103ze，用FSMC、NE1和A16接，网上找了好多初始化例程，始终无法显示，都是白屏，可以读取芯片ID，但是显示是9485，麻烦有调过9486L的大侠帮忙指点一下，或者给点初始化代码，以下是我的初始化代码：
void LCD_Init(void)
{
vu16 temp[4];
GPIO_InitTypeDef GPIO_InitStructure;
FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure;
FSMC_NORSRAMTimingInitTypeDef readWriteTiming;
FSMC_NORSRAMTimingInitTypeDef writeTiming;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC,ENABLE); //使能FSMC时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOE|RCC_APB2Periph_GPIOG|RCC_APB2Periph_AFIO,ENABLE);//使能PORTB,D,E,G以及AFIO复用功能时钟
//PORTG推挽输出
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12; //PG11 推挽输出 复位 G12 推挽输出 背光
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOG, &GPIO_InitStructure);
//PORTD复用推挽输出
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_14|GPIO_Pin_15; //
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOD, &GPIO_InitStructure);
//PORTE复用推挽输出
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15; //
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOE, &GPIO_InitStructure);
// //PORTD复用推挽输出
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7|GPIO_Pin_11; // PD7--NE1D11--A16
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOD, &GPIO_InitStructure);
readWriteTiming.FSMC_AddressSetupTime = 0x01; //地址建立时间（ADDSET）为2个HCLK 1/36M=27ns
readWriteTiming.FSMC_AddressHoldTime = 0x00; //地址保持时间（ADDHLD）模式A未用到
readWriteTiming.FSMC_DataSetupTime = 0x0f; // 数据保存时间为16个HCLK,因为液晶驱动IC的读数据的时候，速度不能太快，尤其对1289这个IC。
readWriteTiming.FSMC_BusTurnAroundDuration = 0x00;
readWriteTiming.FSMC_CLKDivision = 0x00;
readWriteTiming.FSMC_DataLatency = 0x00;
readWriteTiming.FSMC_AccessMode = FSMC_AccessMode_A; //模式A
writeTiming.FSMC_AddressSetupTime = 0x00; //地址建立时间（ADDSET）为1个HCLK
writeTiming.FSMC_AddressHoldTime = 0x00; //地址保持时间（A
writeTiming.FSMC_DataSetupTime = 0x03; ////数据保存时间为4个HCLK
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_NORSRAM1;// 这里我们使用NE1 ，也就对应BTCR[0],[1]。
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_16b;//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_NORSRAM1, ENABLE); // 使能BANK1
delay_ms(50); // delay 50 ms
//复位信号
LCD_RST = 1;
delay_ms(100); // delay 50 ms
LCD_RST = 0;
delay_ms(100); // delay 50 ms
LCD_RST = 1;
delay_ms(220); // delay 50 ms
LCD_WriteReg(0x36, 0x68); // memory access control MY=0, MX=1, MV=1, BGR=1
LCD_WriteReg(0x3A,0x55); //Interface Pixel Format ( DPI[3:0] - DBI[2:0] ) 16 bit/pixel, CPU interface format
// DM, RM = 0
LCD_WriteReg(0xB0,0x00); //Interface Mode Control (SDA_EN 000 VSPL HSPL DPL EPL )ARM--DPL: PCLK polarity set (??data fetched at the rising time, //??data fetched at the falling time)SET DPL=1
LCD_WR_REG(0xB6); //Display Function Control
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x42);
LCD_WR_DATA(0x3B);
LCD_WriteReg(0xB4,0x00); //(000 ZINV 00 DINV[1:0]) Z-INV DINV
LCD_WR_REG(0xB1); // frame rate = 50Hz, Horizontal line period = 17clk (what does this mean??)
LCD_WR_DATA(0x80);
LCD_WR_DATA(0x11);
LCD_WriteReg(0xB7, 0x07); // extra
// Power settings
LCD_WR_REG(0xC1); //(0100 0 BT[2:0]) (0000 0 VC[2:0])
LCD_WR_DATA(0x41);
LCD_WR_DATA(0x00);
LCD_WR_REG(0xC5);
LCD_WR_DATA(0x00);
LCD_WR_DATA(0x53);
LCD_WR_DATA(0x00);
LCD_WriteReg(0xC2, 0x33); //extra
LCD_WriteReg(0x35, 0x00); // enable tearing effect line
//Gamma Setting_10323
LCD_WR_REG(0xE0);
LCD_WR_DATA(0x0F);
LCD_WR_DATA(0x1B);
LCD_WR_DATA(0x18);
LCD_WR_DATA(0x0B);
LCD_WR_DATA(0x0E);
LCD_WR_DATA(0x09);
LCD_WR_DATA(0x47);
LCD_WR_DATA(0x94);
LCD_WR_DATA(0x35);
LCD_WR_DATA(0x0A);
LCD_WR_DATA(0x13);
LCD_WR_DATA(0x05);
LCD_WR_DATA(0x08);
LCD_WR_DATA(0x03);
LCD_WR_DATA(0x00);
//Gamma Setting_10323
LCD_WR_REG(0xE1);
LCD_WR_DATA(0x0F);
LCD_WR_DATA(0x3A);
LCD_WR_DATA(0x37);
LCD_WR_DATA(0x0B);
LCD_WR_DATA(0x0C);
LCD_WR_DATA(0x05);
LCD_WR_DATA(0x4A);
LCD_WR_DATA(0x24);
LCD_WR_DATA(0x39);
LCD_WR_DATA(0x07);
LCD_WR_DATA(0x10);
LCD_WR_DATA(0x04);
LCD_WR_DATA(0x27);
LCD_WR_DATA(0x25);
LCD_WR_DATA(0x00);
LCD_WR_REG(0x11);
delay_ms(120);
LCD_WR_REG(0x29);
LCD_WR_REG(0x002C); //开始写数据
LCD_LED=1;
LCD_Clear(RED);
}
void LCD_Clear(u16 color)
{
uint32_t index = 0;
LCD_SetCursor(0x00,0x0000); //设置光标 位置
LCD_WR_REG(0x002C);
for(index=0;index<153600;index++) LCD_WR_DATA(color);
}
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发表于 2014-4-29 16:13:42
楼主
发表于 2014-4-29 23:02:15
