标题: HC32F460单片机XPT2046触摸程序 [打印本页]

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作者: 余金渠    时间: 2022-7-16 21:04
标题: HC32F460单片机XPT2046触摸程序
中考结束，成绩不错重点高中，更新帖子。这次带来的是触摸的使用我用的是RTrobot 家的2.4寸带触摸屏幕(某一个宝找不到pdd有)，MCU是HC32F460kcta。飞点也解决的比较好具体的大家看代码。

单片机xpt2046源程序如下

1. #include "xpt2046.h"
   
2. 
   
3. void XPT2046_init(void)
   
4. {
   
5.     stc_port_init_t stcPortInit;
   
6.     /* configuration structure initialization */
   
7.     MEM_ZERO_STRUCT(stcPortInit);
   
8. 
   
9.     stcPortInit.enPinMode = Pin_Mode_Out;
   
10.     stcPortInit.enExInt = Enable;
    
11.     stcPortInit.enPullUp = Enable;
    
12. 
    
13.     PORT_Init(XPT2046_PIN_PORT ,XPT2046_CS_PIN , &stcPortInit);
    
14.     stcPortInit.enPinMode = Pin_Mode_In;
    
15.     PORT_Init(XPT2046_PIN_PORT ,XPT2046_PEN_PIN , &stcPortInit);
    
16.     PORT_Unlock();
    
17.     M4_PORT->PSPCR  = 0x0Bu;
    
18.     PORT_Lock();
    
19. 
    
20.     XPT2046_CS_Set();
    
21. }
    
22. 
    
23. void send_8way(uint8_t data)
    
24. {
    
25. 
    
26.     while (Reset == SPI_GetFlag(SPI_UNIT, SpiFlagSpiIdle))
    
27.     {}        
    
28.     SPI_SendData8(SPI_UNIT,data);   
    
29.     while (Reset == SPI_GetFlag(SPI_UNIT,SpiFlagReceiveBufferFull))
    
30.     {}   
    
31.     SPI_ReceiveData8(SPI_UNIT);   
    
32. }
    
33. 
    
34. uint8_t receiv_8way(void)
    
35. {
    
36.     while (Reset == SPI_GetFlag(SPI_UNIT, SpiFlagSpiIdle))
    
37.     {}        
    
38.     SPI_SendData8(SPI_UNIT,0x00);
    
39.     while (Reset == SPI_GetFlag(SPI_UNIT,SpiFlagReceiveBufferFull))
    
40.     {}
    
41.     return SPI_ReceiveData8(SPI_UNIT);            
    
42. }
    
43. 
    
44. 
    
45. int cmp(const void *a, const void *b)
    
46. {
    
47.     return *(uint16_t *)a - *(uint16_t *)b; //从小到大排序（b-a则是从大到小）。需要与被测类型一致，否则排序乱七八糟
    
48. }
    
49. 
    
50. static const uint8_t count = REPEATED_SAMPLING_TIMES; //采集次数
    
51. u16 x_data[count], y_data[count];
    
52. void XPT2046_Rd_Addata(uint16_t *rxdata,uint16_t *rydata)
    
53. {
    
54.     if(PORT_GetBit(XPT2046_PIN_PORT,XPT2046_PEN_PIN)==Reset)//触摸按下了
    
55.     {   
    
56.     Ddl_Delay1ms(30);
    
57.     if(PORT_GetBit(XPT2046_PIN_PORT,XPT2046_PEN_PIN)==Reset)
    
58.     {
    
59.     XPT2046_CS_Clr();
    
60.     SPI_SetClockDiv(SPI_UNIT,SpiClkDiv32);
    
61.     Ddl_Delay1us(10);
    
62.     for (uint8_t i = 0; i < count; i++)
    
63.     {
    
64.         send_8way(0xd0); //发送命令
    
65.         Ddl_Delay1us(8);
    
66.         xdata = receiv_8way();
    
67.         xdata <<= 8;
    
68.         xdata |= receiv_8way();
    
69.         xdata >>= 3;
    
70.         x_data[i] = xdata & 0xFFF;
    
71. 
    
72.         send_8way(0x90);
    
73.         Ddl_Delay1us(8);
    
74.         ydata = receiv_8way();
    
75.         ydata <<= 8;        
    
76.         ydata |= receiv_8way();
    
77.         ydata >>= 3;
    
78.         y_data[i] = ydata & 0xFFF;
    
79.         Ddl_Delay1us(200);
    
80.     }
    
81.     qsort(x_data, count, sizeof(x_data[0]), cmp); //stdlib.h里的排序函数
    
82.     qsort(y_data, count, sizeof(y_data[0]), cmp);
    
83.     *rydata = x_data[count >> 1]; //取中间值,因为是横屏所以XY是反的
    
84.     *rxdata = y_data[count >> 1];
    
85.     XPT2046_CS_Set();
    
86.     }   
    
87.     }
    
88. }
    
89. void Show_circle(u16 x,u16 y,u16 c)
    
90. {
    
91.     Draw_Circle(x,y,10,c);
    
92.     LCD_DrawLine(x-10,y,x+10,y,c);
    
93.     LCD_DrawLine(x,y-10,x,y+10,c);   
    
94. }
    
95. void Touch_Adjust(float32_t *xdata,float32_t *ydata)
    
96. {
    
97.     uint16_t x1_data,y1_data,x2_data,y2_data;
    
98.     LCD_ShowString(0,200,"Please click on the red dot wait 5s",BLACK,WHITE,16,0);
    
99.     Show_circle(10,10,RED);
    
100.     Ddl_Delay1ms(3000);
     
101.     XPT2046_Rd_Addata(&x1_data,&y1_data);   
     
102.     Ddl_Delay1ms(2000);
     
103.     LCD_ShowString(0,200,"Please click on the green dot wait 5s",BLACK,WHITE,16,0);
     
104.     Show_circle(310,230,GREEN);
     
105.     Ddl_Delay1ms(3000);
     
106.     XPT2046_Rd_Addata(&x2_data,&y2_data);   
     
107.     Ddl_Delay1ms(2000);
     
108.     *xdata = (float32_t)(x2_data-x1_data)/(300);
     
109.     *ydata = (float32_t)(y1_data-y2_data)/(220);
     
110. 
     
111.    
     
112.     LCD_Fill(0,0,320,240,WHITE);
     
113.     LCD_ShowString(0,200,"You are good",BLACK,WHITE,16,0);
     
114.    
     
115. }
     
116. 
     
117. void XPT2046_getPoint(u16 *x, u16 *y)
     
118. {
     
119.     uint16_t xdata=0,ydata=0;
     
120.     XPT2046_Rd_Addata(&xdata,&ydata);
     
121.     *x = (u16)xdata/11.1633329-15;//由于扫描方式的不同这里的参数需要根据实际修改.  
     
122.     *y = (u16)ydata/-15.4863634+255;
     
123. 
     
124. }
     
125. 
     

复制代码

main

1. #include "hc32_ddl.h"
   
2. #include "Kthermocouple.h"
   
3. #include "userADC.h"
   
4. #include "userUSART.h"
   
5. #include "userSPI.h"
   
6. #include "userPWM.h"
   
7. #include "ev_hc32f460_lqfp100_v2.h"
   
8. #include "rtthread.h"
   
9. #include "lcd.h"
   
10. #include "xpt2046.h"
    
11. 
    
12. static void touch_thread_init(void);
    
13. static struct rt_thread touch_thread;
    
14. ALIGN(RT_ALIGN_SIZE)
    
15. static rt_uint8_t rt_touch_thread_stack[1024];
    
16. static void touch_thread_entry(void * para);
    
17. static rt_uint8_t touch_thread_priority = 6;
    
18. 
    
19. 
    
20. /**
    
21. *******************************************************************************
    
22. ** \brief  Main function of template project
    
23. **
    
24. ** \param  None
    
25. **
    
26. ** \retval int32_t return value, if needed
    
27. **
    
28. ******************************************************************************/
    
29. int32_t main(void)
    
30. {
    
31.         SPI1_Init();
    
32.         XPT2046_init();
    
33.         LCD_Init();               
    
34.         LCD_Fill(0,0,320,240,WHITE);
    
35.         Ddl_Delay1ms(1000);
    
36.         touch_thread_init();
    
37. }
    
38. 
    
39. static void touch_thread_init(void)
    
40. {
    
41.         rt_thread_init(&touch_thread,
    
42.                                         "touch_thread",
    
43.                                         touch_thread_entry,
    
44.                                         RT_NULL,
    
45.                                         &rt_touch_thread_stack,
    
46.                                         sizeof(rt_touch_thread_stack),
    
47.                                         touch_thread_priority,
    
48.                                         20);//时间 20ms
    
49.         rt_thread_startup(&touch_thread);
    
50. }
    
51. 
    
52. static void touch_thread_entry(void * para)
    
53. {
    
54.         u16 tx=0,ty=0;
    
55.     DDL_Printf("touch_thread_runing. \r\n");
    
56.     while(1)
    
57.     {
    
58.                 if(PORT_GetBit(XPT2046_PIN_PORT,XPT2046_PEN_PIN)==Reset)
    
59.                 {
    
60.                 XPT2046_getPoint(&tx,&ty);
    
61.                 LCD_Fill(tx-2,ty-2,tx+2,ty+2,RED);
    
62.                 }
    
63.        
    
64.     }
    
65. }
    
66. 
    
67. 
    

复制代码

Keil代码下载:
HC32F460TOUCH工程.7z (2.8 MB, 下载次数: 33)

2022-7-17 14:53 上传

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