1.熟悉外设capsense的简单使用，使用到了两个button，一个5元素的slide，
Cypress提供算法供调用检测外设capsense。

2.jtag编程将micro-usb连接在板子的J1口上

 
4.* Hardware connection on the Kit
* Slider - P5[0] - P5[4]
* Button1 - P5[5]
* Button2 - P5[6]
* LCD 2[0-6]

5.示例代码

1 #include <device.h> 2 3 /* Define constants for capsense button and slider */ 4 #define ON (1) 5 #define OFF (0) 6 #define NO_FINGER (0xFF) 7 8 void main() 9 {10 uint8 statusButton0 = OFF;11 uint8 statusButton1 = OFF;12 uint16 sliderPosition = NO_FINGER;13 uint16 lastPosition = NO_FINGER;14 15 CYGlobalIntEnable; 16 17 LCD_Start();18 LCD_Position(0,0);19 LCD_PrintString("Btn0 Btn1 Slider");20 21 /* Start capsense and initialize baselines and enable scan */22 CapSense_Start();23 CapSense_InitializeAllBaselines();24 CapSense_ScanEnabledWidgets();25 26 while(1)27 {28 /* If scanning is completed update the baseline count and check if sensor is active */ 29 if(!CapSense_IsBusy())30 {31 /* Update baseline for all the sensors */32 CapSense_UpdateEnabledBaselines();33 CapSense_ScanEnabledWidgets();34 35 /* Test if button widget is active */36 statusButton0 = CapSense_CheckIsWidgetActive(CapSense_BUTTON0__BTN);37 statusButton1 = CapSense_CheckIsWidgetActive(CapSense_BUTTON1__BTN);38 sliderPosition =(uint8)CapSense_GetCentroidPos(CapSense_LINEARSLIDER0__LS);39 40 /* Display button 1 status on LCD */41 LCD_Position(1,0);42 if( statusButton0 == ON )43 {44 LCD_PrintString("On ");45 }46 else47 {48 LCD_PrintString("Off");49 }50 51 /* Display button 1 status on LCD */52 LCD_Position(1,5);53 if( statusButton1 == ON )54 {55 LCD_PrintString("On ");56 }57 else58 {59 LCD_PrintString("Off");60 }61 62 63 LCD_Position(1,10);64 65 if(sliderPosition == NO_FINGER)66 {67 LCD_PrintString("----");68 }69 70 /* Finger detected on the slider */71 else72 {73 /* If finger position on the slider is changed then update the LCD */74 if(sliderPosition != lastPosition)75 {76 LCD_Position(1,10);77 LCD_PrintString(" ");78 LCD_Position(1,10);79 LCD_PrintNumber(sliderPosition);80 LCD_PutChar('%');81 lastPosition = sliderPosition; 82 }83 }84 }85 } 86 }87 88 /* [] END OF FILE */

 

转载于:https://www.cnblogs.com/lihao602/p/3312484.html