emwin5.22触摸屏读不到消息

xshenpan

OS   ：UCOSII 2.98
STemwin5.22
LCD : 正点原子3.5寸  NT35310 XPT2046
触摸屏移植上去后在下面两个函数能读到触摸数据
int  GUI_TOUCH_X_MeasureX(void) {
int result;
result = TouchReadXY(XPT2046_RDX);
return result;
}

int  GUI_TOUCH_X_MeasureY(void) {
int result;
result = TouchReadXY(XPT2046_RDY);
return result;
}

10ms定时调用GUI_TOUCH_Exec()
static void tmrCb_Touch(void *p_tmr, void *p_arg)
{
(void)p_arg;
GUI_TOUCH_Exec();
}

触摸校准和demo任务
void EmWinDemo(void *p_arg)
{
WM_SetCreateFlags(WM_CF_MEMDEV);
GUI_Init();
TouchCalibrate();
for(;;)
{
GUIDEMO_Main();
}
}

但是在Touch_Calibrate()中获取不到消息
代码在第32行GUI_TOUCH_GetState(&State)中获取不到state的数据

1. #include "GUI.h"
2. #include "touch_calibrate.h"
4. /********************************************************************
5. *
6. *       Static data
7. *
8. *********************************************************************
9. */
11. static const char * _acPos[] = {
12.   "(upper left position)",
13.   "(lower right position)"
14. };
16. /*********************************************************************
17. *
18. *       Static code
19. *
20. **********************************************************************
21. */
22. /*********************************************************************
23. *
24. *       _WaitForPressedState
25. *
26. * Purpose:
27. *   Waits until the touch is in the given pressed state for at least 250 ms
28. */
29. static void _WaitForPressedState(int Pressed) {
30.   GUI_PID_STATE State;
31.   do {
32.     GUI_TOUCH_GetState(&State);
33.     GUI_Delay(1);
34.     if (State.Pressed == Pressed) {
35.       int TimeStart = GUI_GetTime();
36.       do {
37.         GUI_TOUCH_GetState(&State);
38.         GUI_Delay(1);
39.         if (State.Pressed != Pressed) {
40.           break;
41.         } else if ((GUI_GetTime() - 50) > TimeStart) {
42.           return;
43.         }
44.       } while (1);
45.     }
46.   } while (1);
47. }
49. /*********************************************************************
50. *
51. *       _DispStringCentered
52. *
53. * Purpose:
54. *   Shows the given text horizontally and vertically centered
55. */
56. static void _DispStringCentered(const char * pString) {
57.   GUI_RECT Rect;
58.   Rect.x0 = Rect.y0 = 0;
59.   Rect.x1 = LCD_GetXSize() - 1;
60.   Rect.y1 = LCD_GetYSize() - 1;
61.   GUI_DispStringInRect(pString, &Rect, GUI_TA_HCENTER | GUI_TA_VCENTER);
62. }
64. /*********************************************************************
65. *
66. *       _GetPhysValues
67. *
68. * Purpose:
69. *   Asks the user to press the touch screen at the given position
70. *   and returns the physical A/D values
71. */
72. static void _GetPhysValues(int LogX, int LogY, int * pPhysX, int * pPhysY, const char * pString) {
73.   char acText[] = "Press here";
74.   GUI_RECT Rect;
75.   int FontSizeY, Align;
76.   FontSizeY = GUI_GetFontSizeY();
77.   GUI_Clear();
78.   GUI_SetColor(GUI_BLACK);
79.   _DispStringCentered("Runtime calibration,\n"
80.                       "please touch the screen\n"
81.                       "at the center of the ring."); /* Ask user to press the touch */
82.   /* Calculate the rectangle for the string */
83.   Rect.y0 = LogY - FontSizeY;
84.   Rect.y1 = LogY + FontSizeY;
85.   if (LogX < LCD_GetXSize() / 2) {
86.     Rect.x0 = LogX + 15;
87.     Rect.x1 = LCD_GetXSize();
88.     Align = GUI_TA_LEFT;
89.   } else {
90.     Rect.x0 = 0;
91.     Rect.x1 = LogX - 15;
92.     Align = GUI_TA_RIGHT;
93.   }
94.   /* Show the text nearby the ring */
95.   GUI_DispStringInRect(acText, &Rect, Align | GUI_TA_TOP);
96.   GUI_DispStringInRect(pString, &Rect, Align | GUI_TA_BOTTOM);
97.   /* Draw the ring */
98.   GUI_FillCircle(LogX, LogY, 10);
99.   GUI_SetColor(GUI_WHITE);
100.   GUI_FillCircle(LogX, LogY, 5);
101.   GUI_SetColor(GUI_BLACK);
102.   /* Wait until touch is pressed */
103.   _WaitForPressedState(1);
104.   *pPhysX = GUI_TOUCH_GetxPhys();
105.   *pPhysY = GUI_TOUCH_GetyPhys();
106.   /* Wait until touch is released */
107.   _WaitForPressedState(0);
108. }
110. /********************************************************************
111. *
112. *       _Explain
113. *
114. * Purpose:
115. *   Shows a text to give a short explanation of the sample program
116. */
117. static void _Explain(void) {
118.   _DispStringCentered("This sample shows how\n"
119.                       "a touch screen can be\n"
120.                       "calibrated at run time.\n"
121.                       "Please press the touch\n"
122.                       "screen to continue...");
123.   GUI_DispStringHCenterAt("TOUCH_Calibrate", LCD_GetXSize() / 2, 5);
124.   _WaitForPressedState(1);
125.   _WaitForPressedState(0);
126. }
127. /*********************************************************************
128. *
129. *       Public code
130. *
131. **********************************************************************
132. */
133. /*********************************************************************
134. *
135. *       MainTask
136. */
137. void TouchCalibrate(void)
138. {
139.   int aPhysX[2], aPhysY[2], aLogX[2], aLogY[2], i;
141.   GUI_SetBkColor(GUI_WHITE);
142.   GUI_Clear();
143.   GUI_SetColor(GUI_BLACK);
144.   GUI_SetFont(&GUI_Font13B_ASCII);
145.   _Explain();
146.   /* Set the logical values */
147.   aLogX[0] = 15;
148.   aLogY[0] = 15;
149.   aLogX[1] = LCD_GetXSize() - 15;
150.   aLogY[1] = LCD_GetYSize() - 15;
151.   /* Get the physical values of the AD converter for 2 positions */
152.   for (i = 0; i < 2; i++) {
153.     _GetPhysValues(aLogX[i], aLogY[i], &aPhysX[i], &aPhysY[i], _acPos[i]);
154.   }
155.   /* Use the physical values to calibrate the touch screen */
156.   GUI_TOUCH_Calibrate(0, aLogX[0], aLogX[1], aPhysX[0], aPhysX[1]); /* Calibrate X-axis */
157.   GUI_TOUCH_Calibrate(1, aLogY[0], aLogY[1], aPhysY[0], aPhysY[1]); /* Calibrate Y-axis */
158.   /* Display the result */
159.   GUI_CURSOR_Show();
160.   GUI_Clear();
161.   _DispStringCentered("Congratulation, your\n"
162.                       "touch screen has been\n"
163.                       "calibrated. Please use\n"
164.                       "the cursor to test\n"
165.                       "the calibration...");
166.   GUI_Delay(500);
167.   /* Let the user play */
168. //  while(1) {
169. //    GUI_PID_STATE State;
170. //    GUI_TOUCH_GetState(&State);
171. //    if (State.Pressed == 1) {
172. //      GUI_FillCircle(State.x, State.y, 3);
173. //    }
174. //    GUI_Delay(10);
175. //  }
176. }

复制代码

eric2013

向楼主确定几个问题：
1.  这个工程跑别的emWin例子有问题，是不是也有触摸问题。
2. 触摸的任务确定是否运行了。
3. 这两个函数
    WM_SetCreateFlags(WM_CF_MEMDEV);
    GUI_Init();
    换一下位置，如果函数WM_SetCreateFlags(WM_CF_MEMDEV);放在前面会导致桌面窗口也是用内存设备。

xshenpan

感谢，，已经解决了。
我理解错了。首先要使用
GUI_TOUCH_Calibrate(GUI_COORD_X,0,XSIZE_PHYS-1,TOUCH_AD_LEFT,TOUCH_AD_RIGHT);
GUI_TOUCH_Calibrate(GUI_COORD_Y,0,YSIZE_PHYS-1,TOUCH_AD_TOP,TOUCH_AD_BOTTOM);进行校准，初次校准之后才能使用GUI_TOUCH_GetState()获取触摸状态进行运行时校准。
如果不使用官方的校准代码，自行在初始化时校准也可以。

xshenpan

话说怎么结贴？

eric2013

xshenpan:话说怎么结贴？ (2015-11-12 22:42) 

没事，你回复了就可以了。[s:142]

xshenpan

eric2013:没事，你回复了就可以了。[s:142] (2015-11-13 09:39) 

[s:142]