main.c

launchpad msp430官方示例

//******************************************************************************
//******************************************************************************
// RO_PINOSC_TA0 example
// RO method capactiance measurement using PinOsc IO and TimerA0
//
//          Schematic Description: 
//
//                         MSP430G2452
//                      +---------------+
//                      |
//             C--------|P1.0
//             C--------|P1.1
//             C--------|P1.2
//             C--------|P1.3
//             C--------|P1.4
//             C--------|P1.5
//                      |
//           C----------|P2.0
//           C----------|P2.1
//           C----------|P2.2
//           C----------|P2.3
//           C----------|P2.4
//           C----------|P2.5
//                      |
//           C----------|P2.6
//           C----------|P2.7
//
//        The measurement window is accumulation_cycles/ACLK. The ACLK is
//        used to generate a capture event via the internal connection CCIOB. 
//        The counts within the TA0R that have accumulated during the 
//        measurement window represents the capacitance of the element.
//        This peripheral configuration frees up the WDTp peripheral for other
//        uses, but requires an active polling of the CCI0B capture event.  The
//        polling can be replaced with an ISR to improve power consumption.
//
//******************************************************************************
#include "CTS_Layer.h"

#define NUM_SEN	14

uint16_t dCnt[NUM_SEN];
struct Element* keypressed;

const struct Element* address_list[NUM_SEN] = 
{
	&element0,
	&element1,
	&element2,
	&element3,
	&element4,
	&element5,
	&element6,
	&element7,
	&element8,
	&element9,
	&elementA,
	&elementB,
    &elementC,
	&elementD

};						

// Main Function
void main(void)
{ 
  uint8_t i;
  WDTCTL = WDTPW + WDTHOLD;             // Stop watchdog timer
  
  BCSCTL3 |= LFXT1S_2;                  // LFXT1 = VLO

  TI_CAPT_Init_Baseline(&keypad);
  TI_CAPT_Update_Baseline(&keypad,5);

  // Main loop starts here
  while (1)
  {
    keypressed = (struct Element *)TI_CAPT_Buttons(&keypad);
	if(keypressed)
	{
	  for(i=0; i<NUM_SEN; i++)
      {
      	if (keypressed == address_list[i])
		{
		    __no_operation();
		}
      }  
	}
  }
} // End Main