- void tft_gpio(void)
- {
- stc_gpio_cfg_t stcGpioCfg;
- Sysctrl_SetPeripheralGate(SysctrlPeripheralGpio, TRUE);
- stcGpioCfg.enDir = GpioDirOut;
- stcGpioCfg.enPu = GpioPuDisable;
- stcGpioCfg.enPd = GpioPdEnable;
- Gpio_Init(GpioPortA, GpioPin11, &stcGpioCfg);
- Gpio_Init(GpioPortA, GpioPin12, &stcGpioCfg);
- Gpio_Init(GpioPortE, GpioPin3, &stcGpioCfg);
- Gpio_Init(GpioPortE, GpioPin4, &stcGpioCfg);
- Gpio_Init(GpioPortE, GpioPin5, &stcGpioCfg);
- Gpio_Init(GpioPortE, GpioPin12, &stcGpioCfg);
- }
各引脚输出高低电平的引脚定义为：
#define LCD_CS_High() Gpio_SetIO(GpioPortE,GpioPin12) //CS
#define LCD_CS_Low() Gpio_ClrIO(GpioPortE, GpioPin12)
#define LCD_REST_High() Gpio_SetIO(GpioPortE,GpioPin3) //RES
#define LCD_REST_Low() Gpio_ClrIO(GpioPortE,GpioPin3)
#define LCD_DC_High() Gpio_SetIO(GpioPortE,GpioPin4) //DC
#define LCD_DC_Low() Gpio_ClrIO(GpioPortE, GpioPin4)
#define LCD_SDI_High() Gpio_SetIO(GpioPortA,GpioPin12) //DIN
#define LCD_SDI_Low() Gpio_ClrIO(GpioPortA, GpioPin12)
#define LCD_SCK_High() Gpio_SetIO(GpioPortA, GpioPin11) //CLK
#define LCD_SCK_Low() Gpio_ClrIO(GpioPortA,GpioPin11)
#define LCD_LED_High() Gpio_SetIO(GpioPortE,GpioPin5) //BLK
#define LCD_LED_Low() Gpio_ClrIO(GpioPortE,GpioPin5)
TFT显示屏模拟SPI方式字节数据的函数为：
- void LCD_Writ_Bus(unsigned char com)
- {
- unsigned char uci;
- for(uci=0;uci<8;uci++)
- {
- if(com & 0x80)
- {
- LCD_SDI_High();
- }
- else
- {
- LCD_SDI_Low();
- }
- com = com << 1;
- delay_1us(1);
- LCD_SCK_Low();
- delay_1us(1);
- LCD_SCK_High();
- delay_1us(1);
- }
- }
实现以色彩清除屏幕的函数为：
- void LCD_Clear(unsigned int Color)
- {
- char VH,VL;
- unsigned int 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);
- }
- }
- }
实现图标显示的函数为：
- void show_tb(unsigned int x,unsigned int y,unsigned int n)
- {
- unsigned int i,j,k;
- unsigned int da;
- k=0;
- for(i=0;i<50;i++)
- {
- for(j=0;j<50;j++)
- {
- if(n==0) da=gImage_tb[k*2];
- ...
- da=da<<8;
- if(n==0) da|=gImage_tb[k*2+1];
- ...
- POINT_COLOR=da;
- LCD_DrawPoint(x-j,y+i);
- k++;
- }
- }
- }
实现满屏图像显示的函数为：
- void show_pic(const unsigned char *p)
- {
- int i,j;
- unsigned char picH,picL;
- Address_set(0,0,LCD_W-1,LCD_H-1);
- for(i=0;i<240;i++)
- {
- for(j=0;j<320;j++)
- {
- picH=*p++;
- picL=*p++;
- LCD_WR_DATA8(picH);
- LCD_WR_DATA8(picL);
- }
- }
- }
实现字符串显示的函数为：
- void LCD_ShowString(unsigned int x,unsigned int y,const char *p)
- {
- while(*p!='\0')
- {
- if(x>LCD_W-16){x=0;y+=16;}
- if(y>LCD_H-16){y=x=0;}
- LCD_ShowChar(x,y,*p,0);
- x+=8;
- p++;
- }
- }
进行TFT显示屏驱动测试的主程序为：
- int32_t main(void)
- {
- App_LedInit();
- tft_gpio();
- tft_Init();
- BACK_COLOR=YELLOW;
- POINT_COLOR=RED;
- LCD_Clear(YELLOW);
- LCD_ShowString(80,30,"HC32L196");
- show_tb(60,20,0);
- delay1ms(2000);
- show_pic(gImage_123);
- while(1)
- {
- Gpio_SetIO(STK_LED_PORT, STK_LED_PIN);
- delay1ms(1000);
- Gpio_ClrIO(STK_LED_PORT, STK_LED_PIN);
- delay1ms(1000);
- }
- }
经程序的编译与下载，其显示效果如图1和图2所示。
图1 图像显示效果
图2 图标及字符串显示效果
在添加汉字显示函数的情况下，可实现汉字的输出显示，其函数内容为：
- void showhanzi16(unsigned int x,unsigned int y,unsigned char index)
- {
- unsigned char i,j,k;
- unsigned char *temp=hanzi16;
- temp+=index*32;
- for(j=0;j<16;j++)
- {
- Lcd_SetXYP(x,y+j); //LCD_SetCursor(x,y+j);
- for(k=0;k<2;k++)
- {
- for(i=0;i<8;i++)
- {
- if((*temp&(1<<i))!=0)
- {
- LCD_WR_DATA(POINT_COLOR);
- }
- else
- {
- LCD_WR_DATA(BACK_COLOR);
- }
- }
- temp++;
- }
- }
- }
在添加按键处理的情况下，可实现选择处理功能。
对按键使用引脚的配置函数为：
- void App_keyInit(void)
- {
- stc_gpio_cfg_t stcGpioCfg;
- Sysctrl_SetPeripheralGate(SysctrlPeripheralGpio, TRUE);
- stcGpioCfg.enDir = GpioDirIn;
- stcGpioCfg.enPu = GpioPuEnable;
- stcGpioCfg.enPd = GpioPdDisable;
- Gpio_ClrIO(GpioPortA, GpioPin7);
- Gpio_Init(GpioPortA, GpioPin7, &stcGpioCfg);
- }
实现汉字歌单选取功能的主程序为：
- int32_t main(void)
- {
- int8_t i=0;
- App_LedInit();
- tft_gpio();
- tft_Init();
- BACK_COLOR=BLACK;
- POINT_COLOR=RED;
- LCD_Clear(BLACK);
- show_tb(50,1,0);
- LCD_DrawLine(0, 1, 239, 1);
- LCD_DrawLine(50, 1, 50, 51);
- LCD_DrawLine(0, 51, 239, 51);
- LCD_DrawLine(0, 295, 239, 295);
- POINT_COLOR=YELLOW;
- showhanzi16(40,70,20);
- showhanzi16(60,70,21);
- showhanzi16(40,95,22);
- showhanzi16(60,95,23);
- showhanzi16(40,115,30);
- showhanzi16(60,115,31);
- showhanzi16(80,115,32);
- showhanzi16(100,115,33);
- showhanzi16(40,135,34);
- showhanzi16(60,135,35);
- showhanzi16(40,155,40);
- showhanzi16(60,155,41);
- showhanzi16(80,155,42);
- showhanzi16(40,175,5);
- showhanzi16(60,175,6);
- showhanzi16(80,175,7);
- showhanzi16(40,195,0);
- showhanzi16(60,195,1);
- showhanzi16(80,195,2);
- showhanzi16(100,195,3);
- showhanzi16(120,195,4);
- showhanzi16(40,215,8);
- showhanzi16(60,215,9);
- showhanzi16(40,235,10);
- showhanzi16(60,235,11);
- POINT_COLOR=RED;
- showhanzi16(18,71,28);
- LCD_ShowString(80,20,"MP3 Player");
- LCD_ShowString(50,301,"BY: jinglixixi");
- App_keyInit();
- while(1)
- {
- if(Gpio_GetInputIO(GpioPortA, GpioPin7)==0)
经程序的编译与下载，其显示效果如图3和图4所示。
图3 中文显示效果
图4 歌单选取效果
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