TestSleep.c

/*
===============================================================================
 Name        : TestSleep.c
 Author      : $(author)
 Version     :
 Copyright   : $(copyright)
 Description : main definition
===============================================================================
*/

#ifdef __USE_CMSIS
#include "LPC8xx.h"
#endif

#include <cr_section_macros.h>

// TODO: insert other include files here

#include "lpc8xx_gpio.h"
#include "lpc8xx_mrt.h"
#include "lpc8xx_pmu.h"
#include "lpc8xx_nmi.h"
#include "lpc8xx_wkt.h"
// TODO: insert other definitions and declarations here

void SwitchMatrix_Init()
{
    /* Enable SWM clock */
    LPC_SYSCON->SYSAHBCLKCTRL |= (1<<7);

    /* Pin Assign 8 bit Configuration */
    /* none */

    /* Pin Assign 1 bit Configuration */
    LPC_SWM->PINENABLE0 = 0xffffffffUL;
    //PIO0_0 -> PIO0_5
}
void deepsleep(uint32_t count){
	  /* alarm/wake timer as wakeup source */
	  LPC_SYSCON->STARTERP1 = 0x1<<15;
	  /* DISABLE gpio as wakeup source (PINT7)*/
	  LPC_SYSCON->STARTERP0 = 0x0;

		  LPC_PMU->PCON = 0x1;

		  LPC_SYSCON->PDSLEEPCFG &= ~(WDT_OSC_PD | BOD_PD);
		  LPC_SYSCON->PDAWAKECFG = LPC_SYSCON->PDRUNCFG;


		  SCB->SCR |= NVIC_LP_SLEEPDEEP;
		  LPC_PMU->DPDCTRL |= (0x1 << 2);

		  // Self wake-up timer (WKT)の有効化
		  // UM10601 13.3 Basic configuration
		  LPC_SYSCON->SYSAHBCLKCTRL |= (0x1 << 9);
			LPC_SYSCON->PRESETCTRL &= ~(0x1 << 9);
			LPC_SYSCON->PRESETCTRL |= (0x1 << 9);

			//Use 10khz low power clock
		  LPC_WKT->CTRL |= WKT_CLKSEL;

		  LPC_WKT->COUNT = count;

		  NVIC_EnableIRQ(WKT_IRQn);

	    //  Use the ARM WFI instruction.
	    __WFI();

}
/******************************************************************************
** Function name:		WKT_IRQHandler
**
** Descriptions:		alarm/wake timer interrupt handler
**
** parameters:			None
** Returned value:	None
**
******************************************************************************/
void WKT_IRQHandler(void)
{
  if ( LPC_WKT->CTRL & WKT_FLAG )
  {
		LPC_WKT->CTRL |= WKT_FLAG;			/* clear interrupt flag */
  }
  return;
}
/******************************************************************************
** Function name:		halt_wkt
**
** Descriptions:		Halt timer
**
** parameters:			None
** Returned value:	None
**
******************************************************************************/
void halt_wkt(void)
{
	LPC_WKT->CTRL |= WKT_CLR;
  return;
}