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标题: 关于STM32非FSMC方式驱动TFT屏的问题，求各种指导！！！！！！ [打印本页]

作者: 奋斗人生 时间: 2013-11-9 22:51
标题: 关于STM32非FSMC方式驱动TFT屏的问题，求各种指导！！！！！！
本帖最后由奋斗人生于 2013-11-9 23:00 编辑

最近在用STM32的普通IO口驱动TFT屏幕，弄了好久，屏幕上都没反应，就一个很简单的清屏和画点都搞不定，TFT屏是用ILI9341驱动的。。。在其它板子上用FSMC方式驱动正常（说明TFT屏幕没问题），但就是不用FSMC方式就点不亮了，，，
程序如下：求指导，我总觉得是LCD_WriteEnable();和LCD_WriteData();的问题，想知道这两个函数对不对。。。

#define LCD_CS(x) (x)?(GPIO_SetBits(GPIOA,GPIO_Pin_0))

GPIO_ResetBits(GPIOA,GPIO_Pin_0))
#define LCD_RS(x)             (x)?(GPIO_SetBits(GPIOA,GPIO_Pin_8)):(GPIO_ResetBits(GPIOA,GPIO_Pin_8))
#define LCD_BL(x)             (x)?(GPIO_SetBits(GPIOC,GPIO_Pin_6)):(GPIO_ResetBits(GPIOC,GPIO_Pin_6))
#define LCD_RST(x)             (x)?(GPIO_SetBits(GPIOC,GPIO_Pin_7)):(GPIO_ResetBits(GPIOC,GPIO_Pin_7))
#define LCD_RD(x)             (x)?(GPIO_SetBits(GPIOC,GPIO_Pin_8)):(GPIO_ResetBits(GPIOC,GPIO_Pin_8))
#define LCD_WR(x)             (x)?(GPIO_SetBits(GPIOC,GPIO_Pin_9)):(GPIO_ResetBits(GPIOC,GPIO_Pin_9))

void Delay(uint32_t num)
{
   uint32_t i;
for(i=0; i<num; i++);
}

void GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC , ENABLE);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_8;             //LCD_CS | LCD_RS
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;                      //D0~D15
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOB, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7  ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;                            //Ç°ËÄ¸öÎaLED
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;                         //oóËÄ¸öòà′ÎÎaBL RST
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOC, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9;    //oóËÄ¸öòà′ÎÎa RD WR
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOC, &GPIO_InitStructure);

GPIO_SetBits(GPIOB,GPIO_Pin_All);
      LCD_RST(1);
      LCD_RS(1);
LCD_RD(1);
      LCD_CS(1);
      LCD_WR(1);
}

void LCD_WriteEnable(uint8_t data)
{
      LCD_RS(0);                      //0Ãüáî
LCD_RD(1);                      //D′êy¾Y
      LCD_CS(0);                      //0Ñ¡¶¨
      GPIOB->ODR=data;                      //
      LCD_WR(0);                      //D′êy¾Y
      LCD_WR(1);
      LCD_CS(1);
}

void LCD_WriteData(uint16_t data)
{
      LCD_RS(1);                      //1êy¾Y
LCD_RD(1);                      //D′êy¾Y
      LCD_CS(0);                      //0Ñ¡¶¨
      GPIOB->ODR=data;                      //
      LCD_WR(0);                      //D′êy¾Y
      LCD_WR(1);
      LCD_CS(1);
}

void LCD_PrepareToWrite(void)
{
LCD_WriteEnable(0x2C);
}

void LCD_ILI9341_Init(void)
{
LCD_RST(0);
      Delay(0xFFFFF);
LCD_RST(1);
      Delay(0x5FFFF);

      LCD_WriteEnable(0xCF);
      LCD_WriteData(0x00);
      LCD_WriteData(0x81);
      LCD_WriteData(0X30);
      LCD_WriteEnable(0xED);
      LCD_WriteData(0x64);
      LCD_WriteData(0x03);
      LCD_WriteData(0X12);
      LCD_WriteData(0X81);
      LCD_WriteEnable(0xE8);
      LCD_WriteData(0x85);
      LCD_WriteData(0x10);
      LCD_WriteData(0x7A);
      LCD_WriteEnable(0xCB);
      LCD_WriteData(0x39);
      LCD_WriteData(0x2C);
      LCD_WriteData(0x00);
      LCD_WriteData(0x34);
      LCD_WriteData(0x02);
      LCD_WriteEnable(0xF7);
      LCD_WriteData(0x20);
      LCD_WriteEnable(0xEA);
      LCD_WriteData(0x00);
      LCD_WriteData(0x00);
      LCD_WriteEnable(0xC0); //Power control
      LCD_WriteData(0x1B); //VRH[5:0]
      LCD_WriteEnable(0xC1); //Power control
      LCD_WriteData(0x01); //SAP[2:0];BT[3:0]
      LCD_WriteEnable(0xC5); //VCM control
      LCD_WriteData(0x30);       //3F
      LCD_WriteData(0x30);       //3C
      LCD_WriteEnable(0xC7); //VCM control2
      LCD_WriteData(0XB7);

      LCD_WriteEnable(0x36); // Memory Access Control
      LCD_WriteData(0x68);
      LCD_WriteEnable(0x3A);
      LCD_WriteData(0x55);
      LCD_WriteEnable(0xB1);
      LCD_WriteData(0x00);
      LCD_WriteData(0x1A);
      LCD_WriteEnable(0xB6); // Display Function Control
      LCD_WriteData(0x0A);
      LCD_WriteData(0xA2);
      LCD_WriteEnable(0xF2); // 3Gamma Function Disable
      LCD_WriteData(0x00);
      LCD_WriteEnable(0x26); //Gamma curve selected
      LCD_WriteData(0x01);

      LCD_WriteEnable(0xE0); //Set Gamma
      LCD_WriteData(0x0F);
      LCD_WriteData(0x2A);
      LCD_WriteData(0x28);
      LCD_WriteData(0x08);
      LCD_WriteData(0x0E);
      LCD_WriteData(0x08);
      LCD_WriteData(0x54);
      LCD_WriteData(0xA9);
      LCD_WriteData(0x43);
      LCD_WriteData(0x0A);
      LCD_WriteData(0x0F);
      LCD_WriteData(0x00);
      LCD_WriteData(0x00);
      LCD_WriteData(0x00);
      LCD_WriteData(0x00);

      LCD_WriteEnable(0xE1); //Set Gamma
      LCD_WriteData(0x00);
      LCD_WriteData(0x15);
      LCD_WriteData(0x17);
      LCD_WriteData(0x07);
      LCD_WriteData(0x11);
      LCD_WriteData(0x06);
      LCD_WriteData(0x2B);
      LCD_WriteData(0x56);
      LCD_WriteData(0x3C);
      LCD_WriteData(0x05);
      LCD_WriteData(0x10);
      LCD_WriteData(0x0F);
      LCD_WriteData(0x3F);
      LCD_WriteData(0x3F);
      LCD_WriteData(0x0F);

      LCD_WriteEnable(0x2B);
      LCD_WriteData(0x00);
      LCD_WriteData(0x00);
LCD_WriteData(0x00);
      LCD_WriteData(0xef);

      LCD_WriteEnable(0x2A);
      LCD_WriteData(0x00);
      LCD_WriteData(0x00);
      LCD_WriteData(0x01);
      LCD_WriteData(0x3f);

      LCD_WriteEnable(0x11); //Exit Sleep
      Delay(0xFFFF);
      LCD_WriteEnable(0x29); //display on
}

void LCD_StartAddrSet(uint16_t Xpos, uint16_t Ypos)
{
LCD_WriteEnable(0x2A);
LCD_WriteData(Xpos>>8);
LCD_WriteData(Xpos&0XFF);

LCD_WriteEnable(0X2B);
LCD_WriteData(Ypos>>8);
LCD_WriteData(Ypos&0XFF);
}

void LCD_Clear(uint16_t color)
{
uint32_t index;

LCD_StartAddrSet(0x0,0x0);

LCD_PrepareToWrite();

for(index=0; index<76800; index++)
{
      LCD_WriteData(color);
}
}

void LCD_DrawPoint(uint16_t x,uint16_t y,uint16_t color)
{
      LCD_StartAddrSet(x,y);
      LCD_PrepareToWrite();
      LCD_WriteData(color);
}

int main(void)
{
      uint16_t i;

      GPIO_Config();
      LCD_ILI9341_Init();

      LCD_BL(1);//开背光

      LCD_Clear(0x001F);

      LCD_DrawPoint(100,100,0x0000);
      LCD_DrawPoint(100,101,0x0000);
      LCD_DrawPoint(100,102,0x0000);
      LCD_DrawPoint(100,103,0x0000);
      LCD_DrawPoint(100,104,0x0000);
      LCD_DrawPoint(100,105,0x0000);
      LCD_DrawPoint(100,106,0x0000);
      LCD_DrawPoint(100,107,0x0000);
      LCD_DrawPoint(100,108,0x0000);
      LCD_DrawPoint(100,109,0x0000);

      while(1)
      {
      }
}

作者: 简单丹 时间: 2013-11-10 08:57
原子例程不是有吗？

作者: 奋斗人生 时间: 2013-11-10 09:29

简单丹发表于 2013-11-10 08:57
原子例程不是有吗？

接原子的mini开发板上也没反应，似乎他程序里写了这个ILI9341的驱动，，，用其它开发板的FSMC方式可以正常驱动，，，

作者: 简单丹 时间: 2013-11-12 19:17
mini开发板有现成的9341IO口驱动程序啊

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