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          STM32驅動TFT顯示屏ILI9325

          作者: 時間:2016-11-24 來源:網(wǎng)絡 收藏


          void TFT_Init(void)
          {
          u16 DeviceCode;

          Set_RST;
          Delayms(5);
          Clr_RST;
          Delayms(5);
          Set_RST;

          Set_CS;
          Set_RD;
          Set_WR;
          Delayms(5);
          DeviceCode = TFT_ReadReg(0x0000);   // 讀ID,以確認驅動IC為ILI9325
          send_data(DeviceCode>>8);
          send_data(DeviceCode&0xFF);

          Delayms(50);
          Clr_CS;// 打開片選使能
          //
          TFT_Write_com(0x00E5); TFT_Write_dat(0x78F0);// set SRAM internal timing 雖然手冊上沒有介紹這個時鐘的設置,但實際上這個并不很重要,即使不加上去,也可以把屏驅起來,只是圖像是否會清晰就有待驗證了
          //TFT_Write_com(0x00E3); TFT_Write_dat(0x3008);// set SRAM internal timing
          //TFT_Write_com(0x00E7); TFT_Write_dat(0x0012);// set SRAM internal timing
          //TFT_Write_com(0x00EF); TFT_Write_dat(0x1231);// set SRAM internal timing

          //TFT_Write_com(0x0000); TFT_Write_dat(0x0001);// start OcillationILI9325不需要這一句
          TFT_Write_com(0x0001); TFT_Write_dat(0x0100);// set SS and SM bit (S720 -> S1)
          TFT_Write_com(0x0002); TFT_Write_dat(0x0700);// set 1 line inversion
          TFT_Write_com(0x0003); TFT_Write_dat(0x1030);// set GRAM write direction and BGR=1.、、65K
          TFT_Write_com(0x0004); TFT_Write_dat(0x0000);// Resize register
          TFT_Write_com(0x0008); TFT_Write_dat(0x0207);// set the back porch and front porch
          TFT_Write_com(0x0009); TFT_Write_dat(0x0000);// set non-display area refresh cycle ISC[3:0]
          TFT_Write_com(0x000A); TFT_Write_dat(0x0000);// FMARK function
          TFT_Write_com(0x000C); TFT_Write_dat(0x0000);// RGB interface setting
          TFT_Write_com(0x000D); TFT_Write_dat(0x0000);// Frame marker Position
          TFT_Write_com(0x000F); TFT_Write_dat(0x0000);// RGB interface polarity
          //
          TFT_Write_com(0x0010); TFT_Write_dat(0x0000);// SAP, BT[3:0], AP, DSTB, SLP, STB
          TFT_Write_com(0x0011); TFT_Write_dat(0x0007);// DC1[2:0], DC0[2:0], VC[2:0]
          TFT_Write_com(0x0012); TFT_Write_dat(0x0000);// VREG1OUT voltage
          TFT_Write_com(0x0013); TFT_Write_dat(0x0000);// VDV[4:0] for VCOM amplitude
          TFT_Write_com(0x0007); TFT_Write_dat(0x0001);
          Delayms(50); // Dis-charge capacitor power voltage
          TFT_Write_com(0x0010); TFT_Write_dat(0x1090);// SAP, BT[3:0], AP, DSTB, SLP, STB
          TFT_Write_com(0x0011); TFT_Write_dat(0x0227);// DC1[2:0], DC0[2:0], VC[2:0]
          Delayms(50);
          TFT_Write_com(0x0012); TFT_Write_dat(0x001F);//001C// Internal reference voltage= Vci;
          Delayms(50);
          TFT_Write_com(0x0013); TFT_Write_dat(0x1500);//Set VDV[4:0] for VCOM amplitude
          TFT_Write_com(0x0029); TFT_Write_dat(0x0027);//Set VCM[5:0] for VCOMH 電壓
          TFT_Write_com(0x002B); TFT_Write_dat(0x000D);// Set Frame Rate 000C 幀頻
          Delayms(50);
          TFT_Write_com(0x0020); TFT_Write_dat(0x0000);// GRAM horizontal Address
          TFT_Write_com(0x0021); TFT_Write_dat(0x0000);// GRAM Vertical Address
          // ----------- Adjust the Gamma Curve ----------//
          TFT_Write_com(0x0030); TFT_Write_dat(0x0000);
          TFT_Write_com(0x0031); TFT_Write_dat(0x0707);
          TFT_Write_com(0x0032); TFT_Write_dat(0x0307);
          TFT_Write_com(0x0035); TFT_Write_dat(0x0200);
          TFT_Write_com(0x0036); TFT_Write_dat(0x0008);
          TFT_Write_com(0x0037); TFT_Write_dat(0x0004);
          TFT_Write_com(0x0038); TFT_Write_dat(0x0000);
          TFT_Write_com(0x0039); TFT_Write_dat(0x0707);
          TFT_Write_com(0x003C); TFT_Write_dat(0x0002);
          TFT_Write_com(0x003D); TFT_Write_dat(0x1D04);

          //------------------ Set GRAM area ---------------//
          TFT_Write_com(0x0050); TFT_Write_dat(0x0000);// Horizontal GRAM Start Address
          TFT_Write_com(0x0051); TFT_Write_dat(0x00EF);// Horizontal GRAM End Address
          TFT_Write_com(0x0052); TFT_Write_dat(0x0000);// Vertical GRAM Start Address
          TFT_Write_com(0x0053); TFT_Write_dat(0x013F);// Vertical GRAM Start Address

          TFT_Write_com(0x0060); TFT_Write_dat(0xA700);// Gate Scan Line
          TFT_Write_com(0x0061); TFT_Write_dat(0x0001);// NDL,VLE, REV
          TFT_Write_com(0x006A); TFT_Write_dat(0x0000);// set scrolling line
          //-------------- Partial Display Control ---------//
          TFT_Write_com(0x0080); TFT_Write_dat(0x0000);
          TFT_Write_com(0x0081); TFT_Write_dat(0x0000);
          TFT_Write_com(0x0082); TFT_Write_dat(0x0000);
          TFT_Write_com(0x0083); TFT_Write_dat(0x0000);
          TFT_Write_com(0x0084); TFT_Write_dat(0x0000);
          TFT_Write_com(0x0085); TFT_Write_dat(0x0000);
          //-------------- Panel Control -------------------//
          TFT_Write_com(0x0090); TFT_Write_dat(0x0010);
          TFT_Write_com(0x0092); TFT_Write_dat(0x0600);

          TFT_Write_com(0x0007); TFT_Write_dat(0x0133);// 262K color and display ON 開顯示

          Set_CS;//關閉片選使能
          }

          本文引用地址:http://www.ex-cimer.com/article/201611/320970.htm


          void TFT_SetAddr(u16 x1, u16 y1, u16 x2, u16 y2)
          {
          TFT_Write_com(0x0020);TFT_Write_dat(x1);//設置X坐標位置
          TFT_Write_com(0x0021);TFT_Write_dat(y1); //設置Y坐標位置

          TFT_Write_com(0x0050);TFT_Write_dat(x1);//開始X
          TFT_Write_com(0x0051);TFT_Write_dat(x2);//結束X
          TFT_Write_com(0x0052);TFT_Write_dat(y1);//開始Y
          TFT_Write_com(0x0053);TFT_Write_dat(y2);//結束Y

          TFT_Write_com(0x0022);
          }


          void TFT_Pant(u16 Color)
          {
          u32 i, j;

          Clr_CS;
          TFT_SetAddr(0,0,240,320);

          for(i=0; i<320; i++)
          {
          for (j=0; j<240; j++)
          TFT_Write_dat(Color);
          }

          Set_CS;
          }



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