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2.2' TFT屏是一款彩色TFT顯示屏，可用于信息顯示及圖形繪制等。 在合理配置引腳使用的情況下，可驅動TFT顯示屏。為此使TFT顯示屏與NV32F100建立如下的連接關系： CS --- PD1 REST--- PH1 DC --- P H0 SDI --- PE0 SCK --- PE1 為驅動TFT顯示屏使相關引腳輸出高低電平的語句為： #define LCD_CS_High() GPIO_PinSet(GPIO_PTD1); #define LCD_CS_Low() GPIO_PinClear(GPIO_PTD1); #define LCD_REST_High() GPIO_PinSet(GPIO_PTH1); #define LCD_REST_Low() GPIO_PinClear(GPIO_PTH1); #define LCD_DC_High() GPIO_PinSet(GPIO_PTH0); #define LCD_DC_Low() GPIO_PinClear(GPIO_PTH0); #define LCD_SDI_High() GPIO_PinSet(GPIO_PTE0); #define LCD_SDI_Low() GPIO_PinClear(GPIO_PTE0); #define LCD_SCK_High() GPIO_PinSet(GPIO_PTE1); #define LCD_SCK_Low() GPIO_PinClear(GPIO_PTE1); 相關引腳的配置函數為： void GPIO_Configuration(void) { GPIO_Init(GPIOB, GPIO_PTE0_MASK, GPIO_PinOutput); GPIO_Init(GPIOB, GPIO_PTE1_MASK, GPIO_PinOutput); GPIO_Init(GPIOB,GPIO_PTH0_MASK, GPIO_PinOutput); GPIO_Init(GPIOB, GPIO_PTH1_MASK, GPIO_PinOutput); GPIO_Init(GPIOA,GPIO_PTD1_MASK, GPIO_PinOutput); } 進行TFT顯示屏初始化的函數為： - void Lcd_Init(void)
- {
- LCD_REST_Low();
- delay_ms(20);
- LCD_REST_High();
- delay_ms(20);
- LCD_CS_Low();
- LCD_WR_REG(0xCB);
- LCD_WR_DATA8(0x39);
- LCD_WR_DATA8(0x2C);
- LCD_WR_DATA8(0x00);
- LCD_WR_DATA8(0x34);
- LCD_WR_DATA8(0x02);
- LCD_WR_REG(0xCF);
- LCD_WR_DATA8(0x00);
- LCD_WR_DATA8(0XC1);
- LCD_WR_DATA8(0X30);
- LCD_WR_REG(0xE8);
- LCD_WR_DATA8(0x85);
- LCD_WR_DATA8(0x00);
- LCD_WR_DATA8(0x78);
- LCD_WR_REG(0xEA);
- LCD_WR_DATA8(0x00);
- LCD_WR_DATA8(0x00);
- LCD_WR_REG(0xED);
- LCD_WR_DATA8(0x64);
- LCD_WR_DATA8(0x03);
- LCD_WR_DATA8(0X12);
- LCD_WR_DATA8(0X81);
- LCD_WR_REG(0xF7);
- LCD_WR_DATA8(0x20);
- LCD_WR_REG(0xC0); //Power control
- LCD_WR_DATA8(0x23); //VRH[5:0]
- LCD_WR_REG(0xC1); //Power control
- LCD_WR_DATA8(0x10); //SAP[2:0];BT[3:0]
- LCD_WR_REG(0xC5); //VCM control
- LCD_WR_DATA8(0x3e);
- LCD_WR_DATA8(0x28);
- LCD_WR_REG(0xC7); //VCM control2
- LCD_WR_DATA8(0x86);
- LCD_WR_REG(0x36); // Memory Access Control
- LCD_WR_DATA8(0x48); //C8
- LCD_WR_REG(0x3A);
- LCD_WR_DATA8(0x55);
- LCD_WR_REG(0xB1);
- LCD_WR_DATA8(0x00);
- LCD_WR_DATA8(0x18);
- LCD_WR_REG(0xB6); // Display Function Control
- LCD_WR_DATA8(0x08);
- LCD_WR_DATA8(0x82);
- LCD_WR_DATA8(0x27);
- LCD_WR_REG(0xF2); // 3Gamma Function Disable
- LCD_WR_DATA8(0x00);
- LCD_WR_REG(0x26); //Gamma curve selected
- LCD_WR_DATA8(0x01);
- LCD_WR_REG(0xE0); //Set Gamma
- LCD_WR_DATA8(0x0F);
- LCD_WR_DATA8(0x31);
- LCD_WR_DATA8(0x2B);
- LCD_WR_DATA8(0x0C);
- LCD_WR_DATA8(0x0E);
- LCD_WR_DATA8(0x08);
- LCD_WR_DATA8(0x4E);
- LCD_WR_DATA8(0xF1);
- LCD_WR_DATA8(0x37);
- LCD_WR_DATA8(0x07);
- LCD_WR_DATA8(0x10);
- LCD_WR_DATA8(0x03);
- LCD_WR_DATA8(0x0E);
- LCD_WR_DATA8(0x09);
- LCD_WR_DATA8(0x00);
- LCD_WR_REG(0XE1); //Set Gamma
- LCD_WR_DATA8(0x00);
- LCD_WR_DATA8(0x0E);
- LCD_WR_DATA8(0x14);
- LCD_WR_DATA8(0x03);
- LCD_WR_DATA8(0x11);
- LCD_WR_DATA8(0x07);
- LCD_WR_DATA8(0x31);
- LCD_WR_DATA8(0xC1);
- LCD_WR_DATA8(0x48);
- LCD_WR_DATA8(0x08);
- LCD_WR_DATA8(0x0F);
- LCD_WR_DATA8(0x0C);
- LCD_WR_DATA8(0x31);
- LCD_WR_DATA8(0x36);
- LCD_WR_DATA8(0x0F);
- LCD_WR_REG(0x11); //Exit Sleep
- delay_ms(120);
- LCD_WR_REG(0x29); //Display on
- LCD_WR_REG(0x2c);
- }
- void LCD_Clear(uint16_t Color)
- {
- char VH,VL;
- uint16_t i,j;
- VH=Color>>8;
- VL=Color;
- Address_set(0,0,LCD_W-1,LCD_H-1);
- for(i=0;i<LCD_W;i++)
- {
- for (j=0;j<LCD_H;j++)
- {
- LCD_WR_DATA8(VH);
- LCD_WR_DATA8(VL);
- }
- }
- }
- void LCD_ShowStringH(uint16_t x,uint16_t y,uint16_t width,uint16_t height,char size,char *p)
- {
- char x0=x;
- width+=x;
- height+=y;
- while((*p<='~')&&(*p>=' '))
- {
- if(x>=width){x=x0;y+=size;}
- if(y>=height)break;
- LCD_ShowCharZ(x,y,*p,size,1);
- x-=size/2;
- p++;
- }
- }
- void xianshi(void)
- {
- BACK_COLOR=RED;
- POINT_COLOR=WHITE;
- LCD_ShowStringH(240,70,100,16,16,"NV32F100FL64E");
- LCD_ShowStringH(240,100,100,16,16,"2.4'TFT TEST");
- LCD_ShowStringH(240,130,100,16,16,"jinglixixi");
- LCD_ShowStringH(240,160,100,16,16,"2020.8.16");
- }
- int main (void)
- {
- sysinit();
- cpu_identify();
- GPIO_Init(GPIOB, GPIO_PTE7_MASK, GPIO_PinOutput);
- GPIO_Init(GPIOB, GPIO_PTE7_MASK, GPIO_PinOutput);
- GPIO_Configuration();
- Lcd_Init();
- LCD_Clear(RED);
- xianshi();
- while(1);
- }
字符串顯示效果
中文顯示效果
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