ART-Pi开发板 驱动TFT显示屏及功能界面设计

jinglixixi

为实现桌面式智能家居控制系统的设计，TFT显示屏的使用是不可或缺的。本已购置一块2.8寸的触摸屏，但由于时间的紧张只能暂时舍弃了。

就开发板所能直接使用的GPIO资源看，暂时将显示屏的连接关系指定为：

CLK--- PH11

DIN--- PH12

RES---  PH13

DC --- PH15

CS--- PH7

BLK--- PH9

定义相关引脚输出高低电平的语句为：

#define OLED_SCLK_Clr()HAL_GPIO_WritePin(GPIOH,GPIO_PIN_11,GPIO_PIN_RESET)  //CLK

#define OLED_SCLK_Set()HAL_GPIO_WritePin(GPIOH,GPIO_PIN_11,GPIO_PIN_SET)

#define OLED_SDIN_Clr()HAL_GPIO_WritePin(GPIOH,GPIO_PIN_12,GPIO_PIN_RESET)  //DIN

#define OLED_SDIN_Set()HAL_GPIO_WritePin(GPIOH,GPIO_PIN_12,GPIO_PIN_SET)

#define OLED_RST_Clr() HAL_GPIO_WritePin(GPIOH,GPIO_PIN_13,GPIO_PIN_RESET)  //RES

#define OLED_RST_Set()  HAL_GPIO_WritePin(GPIOH,GPIO_PIN_13,GPIO_PIN_SET)

#define OLED_DC_Clr()  HAL_GPIO_WritePin(GPIOH,GPIO_PIN_15,GPIO_PIN_RESET)  //DC

#define OLED_DC_Set()  HAL_GPIO_WritePin(GPIOH,GPIO_PIN_15,GPIO_PIN_SET)

#define OLED_CS_Clr()  HAL_GPIO_WritePin(GPIOH,GPIO_PIN_7,GPIO_PIN_RESET)  //CS

#define OLED_CS_Set()  HAL_GPIO_WritePin(GPIOH,GPIO_PIN_7,GPIO_PIN_SET)

#define OLED_BLK_Clr() HAL_GPIO_WritePin(GPIOH,GPIO_PIN_9,GPIO_PIN_RESET)  //BLK

#define OLED_BLK_Set() HAL_GPIO_WritePin(GPIOH,GPIO_PIN_9,GPIO_PIN_SET)

配置相关引脚为输出功能的函数为：

1. void app_TFT_init(void)
   
2. {
   
3. GPIO_InitTypeDef GPIO_Initure;
   
4. __HAL_RCC_GPIOH_CLK_ENABLE();
   
5. GPIO_Initure.Pin=GPIO_PIN_7|GPIO_PIN_9|GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_15;
   
6. GPIO_Initure.Mode=GPIO_MODE_OUTPUT_PP;
   
7. GPIO_Initure.Speed=GPIO_SPEED_FREQ_LOW;
   
8. HAL_GPIO_Init(GPIOH,&GPIO_Initure);
   
9. LCD_LED_High();
   
10. }

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TFT显示屏的初始化函数为：

1. void Lcd_Init(void)
   
2. {
   
3. LCD_REST_Low();
   
4. delay_ms(20);
   
5. LCD_REST_High();
   
6. delay_ms(20);
   
7. LCD_CS_Low();
   
8. LCD_WR_REG(0xCB);
   
9. LCD_WR_DATA8(0x39);
   
10. LCD_WR_DATA8(0x2C);
    
11. LCD_WR_DATA8(0x00);
    
12. LCD_WR_DATA8(0x34);
    
13. LCD_WR_DATA8(0x02);
    
14. LCD_WR_REG(0xCF);
    
15. LCD_WR_DATA8(0x00);
    
16. LCD_WR_DATA8(0XC1);
    
17. LCD_WR_DATA8(0X30);
    
18. LCD_WR_REG(0xE8);
    
19. LCD_WR_DATA8(0x85);
    
20. LCD_WR_DATA8(0x00);
    
21. LCD_WR_DATA8(0x78);
    
22. LCD_WR_REG(0xEA);
    
23. LCD_WR_DATA8(0x00);
    
24. LCD_WR_DATA8(0x00);
    
25. LCD_WR_REG(0xED);
    
26. LCD_WR_DATA8(0x64);
    
27. LCD_WR_DATA8(0x03);
    
28. LCD_WR_DATA8(0X12);
    
29. LCD_WR_DATA8(0X81);
    
30. LCD_WR_REG(0xF7);
    
31. LCD_WR_DATA8(0x20);
    
32. LCD_WR_REG(0xC0);
    
33. LCD_WR_DATA8(0x23);
    
34. LCD_WR_REG(0xC1);
    
35. LCD_WR_DATA8(0x10);
    
36. LCD_WR_REG(0xC5);
    
37. LCD_WR_DATA8(0x3e);
    
38. LCD_WR_DATA8(0x28);
    
39. LCD_WR_REG(0xC7);
    
40. LCD_WR_DATA8(0x86);
    
41. LCD_WR_REG(0x36);
    
42. LCD_WR_DATA8(0x48);
    
43. LCD_WR_REG(0x3A);
    
44. LCD_WR_DATA8(0x55);
    
45. LCD_WR_REG(0xB1);
    
46. LCD_WR_DATA8(0x00);
    
47. LCD_WR_DATA8(0x18);
    
48. LCD_WR_REG(0xB6);
    
49. LCD_WR_DATA8(0x08);
    
50. LCD_WR_DATA8(0x82);
    
51. LCD_WR_DATA8(0x27);
    
52. LCD_WR_REG(0xF2);
    
53. LCD_WR_DATA8(0x00);
    
54. LCD_WR_REG(0x26);
    
55. LCD_WR_DATA8(0x01);
    
56. LCD_WR_REG(0xE0);
    
57. LCD_WR_DATA8(0x0F);
    
58. LCD_WR_DATA8(0x31);
    
59. LCD_WR_DATA8(0x2B);
    
60. LCD_WR_DATA8(0x0C);
    
61. LCD_WR_DATA8(0x0E);
    
62. LCD_WR_DATA8(0x08);
    
63. LCD_WR_DATA8(0x4E);
    
64. LCD_WR_DATA8(0xF1);
    
65. LCD_WR_DATA8(0x37);
    
66. LCD_WR_DATA8(0x07);
    
67. LCD_WR_DATA8(0x10);
    
68. LCD_WR_DATA8(0x03);
    
69. LCD_WR_DATA8(0x0E);
    
70. LCD_WR_DATA8(0x09);
    
71. LCD_WR_DATA8(0x00);
    
72. LCD_WR_REG(0XE1);
    
73. LCD_WR_DATA8(0x00);
    
74. LCD_WR_DATA8(0x0E);
    
75. LCD_WR_DATA8(0x14);
    
76. LCD_WR_DATA8(0x03);
    
77. LCD_WR_DATA8(0x11);
    
78. LCD_WR_DATA8(0x07);
    
79. LCD_WR_DATA8(0x31);
    
80. LCD_WR_DATA8(0xC1);
    
81. LCD_WR_DATA8(0x48);
    
82. LCD_WR_DATA8(0x08);
    
83. LCD_WR_DATA8(0x0F);
    
84. LCD_WR_DATA8(0x0C);
    
85. LCD_WR_DATA8(0x31);
    
86. LCD_WR_DATA8(0x36);
    
87. LCD_WR_DATA8(0x0F);
    
88. LCD_WR_REG(0x11);
    
89. delay_ms(120);
    
90. LCD_WR_REG(0x29);
    
91. LCD_WR_REG(0x2c);
    
92. }

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实现图标显示的函数为：

1. void show_tbh(unsigned int x,unsigned int y,unsigned int n) //200*200
   
2. {
   
3. unsigned int i,j,k;
   
4. unsigned int da;
   
5. k=0;
   
6. for(i=0;i<50;i++)
   
7. {      
   
8. for(j=0;j<50;j++)
   
9. {
   
10. if(n==0) da=gImage_tb[k*2];
    
11. if(n==1) da=gImage_pwm[k*2];
    
12. if(n==2) da=gImage_rtc[k*2];
    
13. if(n==3) da=gImage_adc[k*2];
    
14. if(n==4) da=gImage_tft[k*2];
    
15. if(n==5) da=gImage_sz[k*2];
    
16. if(n==6) da=gImage_kz[k*2];
    
17. if(n==7) da=gImage_dht[k*2];
    
18. da<<=8;
    
19. if(n==0) da|=gImage_tb[k*2+1];
    
20. if(n==1) da|=gImage_pwm[k*2+1];
    
21. if(n==2) da|=gImage_rtc[k*2+1];
    
22. if(n==3) da|=gImage_adc[k*2+1];
    
23. if(n==4) da|=gImage_tft[k*2+1];
    
24. if(n==5) da|=gImage_sz[k*2+1];
    
25. if(n==6) da|=gImage_kz[k*2+1];
    
26. if(n==7) da|=gImage_dht[k*2+1];
    
27. POINT_COLOR=da;
    
28. LCD_DrawPoint(x+i,y+j);
    
29. k++;
    
30. }
    
31. }
    
32. }

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实现界面显示效果的主程序是：

1. int main(void)
   
2. {
   
3. Cache_Enable();
   
4. HAL_Init();
   
5. Stm32_Clock_Init(160,5,2,4);
   
6. delay_init(400);
   
7. delay_ms(200);
   
8. app_TFT_init();
   
9. Lcd_Init();
   
10. LCD_Clear(WHITE);
    
11. show_tbh(20,240,0);
    
12. showhanzi16h(80,280,3,0);
    
13. showhanzi16h(80,264,4,0);
    
14. show_tbh(20,180,1);
    
15. show_tbh(20,120,2);
    
16. show_tbh(20,60,3);
    
17. showhanzi16h(80,100,5,1);
    
18. showhanzi16h(80,84,6,1);
    
19. show_tbh(120,60,4);
    
20. show_tbh(120,120,5);
    
21. show_tbh(120,180,6);
    
22. show_tbh(120,240,7);
    
23. showhanzi16h(180,280,13,1);
    
24. showhanzi16h(180,264,14,1);
    
25. showhanzi16h(180,220,11,1);
    
26. showhanzi16h(180,204,12,1);
    
27. showhanzi16h(180,160,9,1);
    
28. showhanzi16h(180,144,10,1);
    
29. showhanzi16h(180,100,7,1);
    
30. showhanzi16h(180,84,8,1);
    
31. BACK_COLOR=WHITE;
    
32. POINT_COLOR=RED;
    
33. LCD_ShowCharh(80,160,'R',1);
    
34. LCD_ShowCharh(80,152,'T',1);
    
35. LCD_ShowCharh(80,144,'C',1);
    
36. LCD_ShowCharh(80,220,'P',1);
    
37. LCD_ShowCharh(80,212,'W',1);
    
38. LCD_ShowCharh(80,204,'M',1);
    
39. delay_ms(2000);
    
40. LED_Init();
    
41. while(1)
    
42. {
    
43. LED2(1);
    
44. delay_ms(500);
    
45. LED2(0);  
    
46. delay_ms(500);
    
47. }
    
48. }

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经程序的编译下载，其显示效果图1和图2所示。

图1 功能选择界面

图2 功能选择