[参考译文] CAPTIVATE-FR2676：有关电容式感应产品独立操作和结果显示的查询

/* Define the buttons */
#define BTN_1	(0)
#define BTN_2	(1)
#define BTN_3	(2)
#define BTN_4	(3)
#define CLEAR_LEDS  P5OUT & =(GPIO_PIN0 | GPIO_PIN1 | GPIO_PIN2 | GPIO_PIN6)

void yourSensorHandler(tSensor* pSensor)
{
	//  Test if this is the very first touch, else skip it
	if ((pSensor->bSensorTouch == true) && (pSensor->bSensorPrevTouch == false))
		{
			// First clear all previous LEDs
			CLEAR_LEDS;

			//
			// Identify the dominant element in the sensor.
			// Of the four buttons, only one is allowed to be touched at a time,
			// and the button with the strongest response is selected.
			//
			switch (CAPT_getDominantButton(pSensor))
			{
				case BTN_1:
					LED1_ON; 		
					break;

				case BTN_2:
					LED2_ON; 		
					break;
					
				case BTN_3:
					LED3_ON; 		
					break;
					
				case BTN_4:
					LED4_ON; 		
					break;
				default:
					break;
			}
		}
}

/* --COPYRIGHT--,BSD
 * Texas Instruments Incorporated, 2017
 * Redistribution and use in source and binary forms are permitted.
 * Full license details are in the header comments.
 */

//*****************************************************************************
// Includes
//*****************************************************************************
#include <msp430.h>                      // Generic MSP430 Device Include
#include "driverlib.h"                   // MSPWare Driver Library
#include "captivate.h"                   // CapTIvate Touch Software Library
#include "CAPT_App.h"                    // CapTIvate Application Code
#include "CAPT_BSP.h"                    // CapTIvate EVM Board Support Package
#include "gpio.h"                        // Include GPIO control headers

//*****************************************************************************
// Macros and Definitions
//*****************************************************************************
#define BTN_1       (0)
#define BTN_2       (1)
#define BTN_3       (2)
#define BTN_4       (3)
#define CLEAR_LEDS  P5OUT &= ~(GPIO_PIN0 | GPIO_PIN1 | GPIO_PIN2 | GPIO_PIN6) // Clear previous states

//*****************************************************************************
// Function Prototypes
//*****************************************************************************
void yourSensorHandler(tSensor* pSensor);
void setPinHigh(uint8_t pin); // Function to set a specified pin high

//*****************************************************************************
// Global Variables
//*****************************************************************************
tSensor yourSensor;  // Declare yourSensor as a global variable

//*****************************************************************************
// Main Function
//*****************************************************************************
void main(void)
{
    // Stop watchdog timer and configure MCU
    WDTCTL = WDTPW | WDTHOLD;            // Stop watchdog timer
    BSP_configureMCU();                  // Set up device IO and clocking
    __bis_SR_register(GIE);              // Enable global interrupts

    // Configure P5.0, P5.1, P5.2, and P5.6 as output
    P5DIR |= (GPIO_PIN0 | GPIO_PIN1 | GPIO_PIN2 | GPIO_PIN6); // Set P5.0, P5.1, P5.2, P5.6 as output
    P5OUT &= ~(GPIO_PIN0 | GPIO_PIN1 | GPIO_PIN2 | GPIO_PIN6); // Initially low

    // Initialize and start the CapTIvate application
    CAPT_appStart();

    // Register the sensor handler callback
    MAP_CAPT_registerCallback(&yourSensor, &yourSensorHandler);  // Register the callback with the sensor object

    // Main application loop
    while (1)
    {
        CAPT_appHandler();               // Handle capacitive touch processing
        Demo_checkForValidTouchandProximity();  // Custom application processing
        CAPT_appSleep();                  // Enter low-power mode if no tasks are pending
    }
}

//*****************************************************************************
// Sensor Callback Function
//*****************************************************************************
void yourSensorHandler(tSensor* pSensor)
{
    // Check if a new touch is detected
    if ((pSensor->bSensorTouch == true) && (pSensor->bSensorPrevTouch == false))
    {
        // Clear all previous states
        CLEAR_LEDS;

        // Set the corresponding pin high based on the dominant button
        switch (CAPT_getDominantButton(pSensor))
        {
            case BTN_1:
                setPinHigh(GPIO_PIN2); // Set P5.2 high for BTN_1
                break;

            case BTN_2:
                setPinHigh(GPIO_PIN1); // Set P5.1 high for BTN_2
                break;

            case BTN_3:
                setPinHigh(GPIO_PIN0); // Set P5.0 high for BTN_3
                break;

            case BTN_4:
                setPinHigh(GPIO_PIN6); // Set P5.6 high for BTN_4
                break;

            default:
                break; // Handle invalid button state
        }
    }
}

//*****************************************************************************
// Set Pin High Function
//*****************************************************************************
void setPinHigh(uint8_t pin)
{
    // Set the specified pin high to keep it in the high state
    P5OUT |= pin;    // Set the pin high
}