ILI9340 16位总线模式无法显示

2019-07-18 08:29发布

用proteus 仿真ILI9341液晶屏，但是无法显示。 LCD_Init初始化中清屏程序将屏清为红 {MOD}，但是无反应。请各位看看哪里有问题。

void LCD_Init(void)
{
      GPIO_InitTypeDef  GPIO_InitStructure;

      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE );
      GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable , ENABLE);       //JTAG-DP 失能 + SW-DP使能

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;                //推挽输出
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(GPIOA, &GPIO_InitStructure);
      GPIO_Write(GPIOA,0XFF);

      //LCDBL,RD,WR,RS,CS
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_2;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;                //推挽输出
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(GPIOB, &GPIO_InitStructure);
      GPIO_SetBits(GPIOB, GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_2); //CS RS WR RD

//       //LCDRESET
//       GPIO_InitStructure.GPIO_Pin =GPIO_Pin_6;
//       GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;                //推挽输LCDRESET
//       GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//       GPIO_Init(GPIOB, &GPIO_InitStructure);
//       GPIO_SetBits(GPIOB, GPIO_Pin_6);

      LCDBKON;//点亮LCD背光

      //***************************RESET LCD Driver******************************
      LCD_RESET_SET;    //reset-->1
      delayms(1);       //Delay 1ms
      LCD_RESET_CLR;    //reset-->0
      delayms(10);       //Delay 10ms
      LCD_RESET_SET;    //reset-->1
      delayms(120);    //Delay 200ms
      //************************Start initial sequence***************************
                              delayms(500);
                              LCD_WR_REG(0x01);
                              delayms(200);

                              LCD_WR_REG(0xCF);
                              LCD_WR_DATA(0x00);
                              LCD_WR_DATA(0x8B);
                              LCD_WR_DATA(0X30);

                              LCD_WR_REG(0xED);
                              LCD_WR_DATA(0x67);
                              LCD_WR_DATA(0x03);
                              LCD_WR_DATA(0X12);
                              LCD_WR_DATA(0X81);

                              LCD_WR_REG(0xE8);
                              LCD_WR_DATA(0x85);
                              LCD_WR_DATA(0x10);
                              LCD_WR_DATA(0x7A);

                              LCD_WR_REG(0xCB);
                              LCD_WR_DATA(0x39);
                              LCD_WR_DATA(0x2C);
                              LCD_WR_DATA(0x00);
                              LCD_WR_DATA(0x34);
                              LCD_WR_DATA(0x02);

                              LCD_WR_REG(0xF7);
                              LCD_WR_DATA(0x20);

                              LCD_WR_REG(0xEA);
                              LCD_WR_DATA(0x00);
                              LCD_WR_DATA(0x00);

                              LCD_WR_REG(0xC0); //Power control
                              LCD_WR_DATA(0x1B); //VRH[5:0]

                              LCD_WR_REG(0xC1); //Power control
                              LCD_WR_DATA(0x10); //SAP[2:0];BT[3:0]

                              LCD_WR_REG(0xC5); //VCM control
                              LCD_WR_DATA(0x3F);       //3F
                              LCD_WR_DATA(0x3C);       //3C

                              LCD_WR_REG(0xC7); //VCM control2
                              LCD_WR_DATA(0XB7);

                              LCD_WR_REG(0x36); // Memory Access Control
                              LCD_WR_DATA(0x08);

                              LCD_WR_REG(0x3A);
                              LCD_WR_DATA(0x55);

                              LCD_WR_REG(0xB1);
                              LCD_WR_DATA(0x00);
                              LCD_WR_DATA(0x1B);

                              LCD_WR_REG(0xB6); // Display Function Control
                              LCD_WR_DATA(0x0A);
                              LCD_WR_DATA(0xA2);

                              LCD_WR_REG(0xF2); // 3Gamma Function Disable
                              LCD_WR_DATA(0x00);

                              LCD_WR_REG(0x26); //Gamma curve selected
                              LCD_WR_DATA(0x01);

                              LCD_WR_REG(0xE0); //Set Gamma
                              LCD_WR_DATA(0x0F);
                              LCD_WR_DATA(0x2A);
                              LCD_WR_DATA(0x28);
                              LCD_WR_DATA(0x08);
                              LCD_WR_DATA(0x0E);
                              LCD_WR_DATA(0x08);
                              LCD_WR_DATA(0x54);
                              LCD_WR_DATA(0XA9);
                              LCD_WR_DATA(0x43);
                              LCD_WR_DATA(0x0A);
                              LCD_WR_DATA(0x0F);
                              LCD_WR_DATA(0x00);
                              LCD_WR_DATA(0x00);
                              LCD_WR_DATA(0x00);
                              LCD_WR_DATA(0x00);

                              LCD_WR_REG(0XE1); //Set Gamma
                              LCD_WR_DATA(0x00);
                              LCD_WR_DATA(0x15);
                              LCD_WR_DATA(0x17);
                              LCD_WR_DATA(0x07);
                              LCD_WR_DATA(0x11);
                              LCD_WR_DATA(0x06);
                              LCD_WR_DATA(0x2B);
                              LCD_WR_DATA(0x56);
                              LCD_WR_DATA(0x3C);
                              LCD_WR_DATA(0x05);
                              LCD_WR_DATA(0x10);
                              LCD_WR_DATA(0x0F);
                              LCD_WR_DATA(0x3F);
                              LCD_WR_DATA(0x3F);
                              LCD_WR_DATA(0x0F);



                              LCD_WR_REG(0x11); //Exit Sleep
                              delayms(120);
                              LCD_WR_REG(0x29); //display on

      LCD_WR_REG(0x2A);
                     LCD_WR_DATA(0x00);
                     LCD_WR_DATA(0x00);
                     LCD_WR_DATA(0x00);
                     LCD_WR_DATA(0xEF);
      LCD_WR_REG(0x2B);
                     LCD_WR_DATA(0x00);
                     LCD_WR_DATA(0x00);
                     LCD_WR_DATA(0x01);
                     LCD_WR_DATA(0x3F);

//       LCD_WR_REG(0x2C);  //往存储器写数据

      delayms(10);

      LCD_Clear(RED);
}

//清屏函数
//Color:要清屏的填充 {MOD}
void LCD_Clear(u16 Color)
{
      u32 index=0;
//       LCD_SetCursor(0x00,0x0000);//设置光标位置
      LCD_WriteRAM_Prepare();    //开始写入GRAM
      for(index=0;index<76800;index++)
      {
            LCD_WR_DATA(Color);
      }
}

void LCD_WR_DATA(u16 data)
{
                        LCD_CS_CLR;
                              LCD_RS_SET;
                              LCD_RD_SET;

                              DATAOUT(data);
                              LCD_WR_CLR;

                              LCD_WR_SET;

                              LCD_CS_SET;
}
//写寄存器函数
void LCD_WR_REG(u8 data)
{

                              LCD_CS_CLR;
            LCD_RS_CLR;//写地址
            DATAOUT(data);
      LCD_WR_CLR;
      LCD_RD_SET;
      LCD_WR_SET;

      LCD_RS_SET;
      LCD_CS_SET;
}