模板: 32inch-TOUCH-LCD-FAQ
来自Waveshare Wiki
- LCD供电电压:2.5V~3.3V
- 背光供电电压:4.5V~5V
- 平均背光工作电流:150mA
- 平均LCD面板工作电流:15mA
- 可以,但延长线不能超过100mm,否则可能会导致通信失败。
【相同点】:
- 接口一致,分辨率一致。
【区别】:
- 3.2inch 320x240 Touch LCD (A) LCD控制芯片SSD1289
- 3.2inch 320x240 Touch LCD (C) LCD控制芯片ILI9325
不可以,硬件仅支持16位模式。
- 您好,A的已经停产了,您可以购买C型3.2inch 320x240 Touch LCD (C)这款,接口是兼容的。另外需要下载新版的示例程序资料,修改您现有的程序即可。
- 可能是初始化代码有问题,打开工程,用以下代码覆盖试试(如果是不同硬件平台的代码,可能需要作相应的修改)
if( DeviceCode == 0x9325 || DeviceCode == 0x9328 ) { LCD_Code = ILI9325; LCD_WriteReg(0xE5, 0x78F0); /* set SRAM internal timing */ LCD_WriteReg(0x01, 0x0100); /* set Driver Output Control */ LCD_WriteReg(0x02, 0x0700); /* set 1 line inversion */ LCD_WriteReg(0x03, 0x1030); /* set GRAM write direction and BGR=1 */ LCD_WriteReg(0x04, 0x0000); /* Resize register */ LCD_WriteReg(0x08, 0x0207); /* set the back porch and front porch */ LCD_WriteReg(0x09, 0x0000); /* set non-display area refresh cycle ISC[3:0] */ LCD_WriteReg(0x0A, 0x0000); /* FMARK function */ LCD_WriteReg(0x0C, 0x0000); /* RGB interface setting */ LCD_WriteReg(0x0D, 0x0000); /* Frame marker Position */ LCD_WriteReg(0x0F, 0x0000); /* RGB interface polarity */ /*************Power On sequence ****************/ LCD_WriteReg(0x10, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */ LCD_WriteReg(0x11, 0x0007); /* DC1[2:0], DC0[2:0], VC[2:0] */ LCD_WriteReg(0x12, 0x0000); /* VREG1OUT voltage */ LCD_WriteReg(0x13, 0x0000); /* VDV[4:0] for VCOM amplitude */ LCD_WriteReg(0x07, 0x0001); delay_ms(200); /* Dis-charge capacitor power voltage */ LCD_WriteReg(0x10, 0x1090); /* SAP, BT[3:0], AP, DSTB, SLP, STB */ LCD_WriteReg(0x11, 0x0227); /* Set DC1[2:0], DC0[2:0], VC[2:0] */ delay_ms(50); /* Delay 50ms */ LCD_WriteReg(0x12, 0x001F); delay_ms(50); /* Delay 50ms */ LCD_WriteReg(0x13, 0x1500); /* VDV[4:0] for VCOM amplitude */ LCD_WriteReg(0x29, 0x0027); /* 04 VCM[5:0] for VCOMH */ LCD_WriteReg(0x2B, 0x000D); /* Set Frame Rate */ delay_ms(50); /* Delay 50ms */ LCD_WriteReg(0x20, 0x0000); /* GRAM horizontal Address */ LCD_WriteReg(0x21, 0x0000); /* GRAM Vertical Address */ /* ----------- Adjust the Gamma Curve ---------- */ #if 1 //不同批次Gamma值可能有一定差异,以下提供了我们常用的3组参数作为参考 LCD_WriteReg(0x30, 0x0000); LCD_WriteReg(0x31, 0x0603); LCD_WriteReg(0x32, 0x0206); LCD_WriteReg(0x35, 0x0206); LCD_WriteReg(0x36, 0x0004); LCD_WriteReg(0x37, 0x0105); LCD_WriteReg(0x38, 0x0401); LCD_WriteReg(0x39, 0x0707); LCD_WriteReg(0x3C, 0x0602); LCD_WriteReg(0x3D, 0x0004); #endif #if 0 LCD_WriteReg(0x30, 0x0000); LCD_WriteReg(0x31, 0x0707); LCD_WriteReg(0x32, 0x0307); LCD_WriteReg(0x35, 0x0200); LCD_WriteReg(0x36, 0x0008); LCD_WriteReg(0x37, 0x0004); LCD_WriteReg(0x38, 0x0000); LCD_WriteReg(0x39, 0x0707); LCD_WriteReg(0x3C, 0x0002); LCD_WriteReg(0x3D, 0x1D04); #endif #if 0 LCD_WriteReg(0x30,0x0007); LCD_WriteReg(0x31,0x0707); LCD_WriteReg(0x32,0x0006); LCD_WriteReg(0x35,0x0704); LCD_WriteReg(0x36,0x1f04); LCD_WriteReg(0x37,0x0004); LCD_WriteReg(0x38,0x0000); LCD_WriteReg(0x39,0x0706); LCD_WriteReg(0x3c,0x0701); LCD_WriteReg(0x3d,0x000f); #endif /* ------------------ Set GRAM area --------------- */ LCD_WriteReg(0x50, 0x0000); /* Horizontal GRAM Start Address */ LCD_WriteReg(0x51, 0x00EF); /* Horizontal GRAM End Address */ LCD_WriteReg(0x52, 0x0000); /* Vertical GRAM Start Address */ LCD_WriteReg(0x53, 0x013F); /* Vertical GRAM Start Address */ LCD_WriteReg(0x60, 0xA700); /* Gate Scan Line */ LCD_WriteReg(0x61, 0x0001); /* NDL,VLE, REV */ LCD_WriteReg(0x6A, 0x0000); /* set scrolling line */ /* -------------- Partial Display Control --------- */ LCD_WriteReg(0x80, 0x0000); LCD_WriteReg(0x81, 0x0000); LCD_WriteReg(0x82, 0x0000); LCD_WriteReg(0x83, 0x0000); LCD_WriteReg(0x84, 0x0000); LCD_WriteReg(0x85, 0x0000); /* -------------- Panel Control ------------------- */ LCD_WriteReg(0x90, 0x0010); LCD_WriteReg(0x92, 0x0600); LCD_WriteReg(0x07, 0x0133); /* 262K color and display ON */ }