C++ (Cpp) CLKPWR_Sleep Examples

Example #1

File: extint_sleep.c Project: readermank/kico_si5

/*********************************************************************//**
 * @brief		c_entry: Main program body
 * @param[in]	None
 * @return 		int
 **********************************************************************/
int c_entry (void)
{
	PINSEL_CFG_Type PinCfg;
	EXTI_InitTypeDef EXTICfg;

	/* Initialize debug via UART0
	 * – 115200bps
	 * – 8 data bit
	 * – No parity
	 * – 1 stop bit
	 * – No flow control
	 */
	debug_frmwrk_init();

	// print welcome screen
	print_menu();

	/* Initialize LEDs
	 * - If using MCB1700 board:
	 * 		LEDs: P1.28 and P1.29 are available
	 * - If using IAR1700 board:
	 * 		LEDs: LED1(P1.25) and LED2(P0.4) are available
	 * Turn off LEDs after initialize
	 */
	InitLED();

	/* Initialize EXT pin and registers
	 * - If using MCB1700 board: EXTI0 is configured
	 * - If using IAR1700 board: EXTI2 is configured
	 */
#ifdef MCB_LPC_1768
	/* P2.10 as /EINT0 */
	PinCfg.Funcnum = 1;
	PinCfg.OpenDrain = 0;
	PinCfg.Pinmode = 0;
	PinCfg.Pinnum = 10;
	PinCfg.Portnum = 2;
	PINSEL_ConfigPin(&PinCfg);
#elif defined (IAR_LPC_1768)
	/* P2.12 as /EINT2 */
	PinCfg.Funcnum = 1;
	PinCfg.OpenDrain = 0;
	PinCfg.Pinmode = 0;
	PinCfg.Pinnum = 12;
	PinCfg.Portnum = 2;
	PINSEL_ConfigPin(&PinCfg);
#endif

	EXTI_Init();

	EXTICfg.EXTI_Line = _EXTINT;
	/* edge sensitive */
	EXTICfg.EXTI_Mode = EXTI_MODE_EDGE_SENSITIVE;
	EXTICfg.EXTI_polarity = EXTI_POLARITY_LOW_ACTIVE_OR_FALLING_EDGE;
	EXTI_ClearEXTIFlag(_EXTINT);
	EXTI_Config(&EXTICfg);

	NVIC_SetPriorityGrouping(4);
	NVIC_SetPriority(_EXT_IRQ, 0);
	NVIC_EnableIRQ(_EXT_IRQ);

	_DBG_("First LED is blinking in normal mode...\n\r"	\
		  "Press '1' to enter system in sleep mode.\n\r"\
		  "If you want to wake-up the system, press INT/WAKE-UP button.");
	while(_DG !='1')
	{
		//Blink first LED
#ifdef MCB_LPC_1768
		//blink LED P1.28
		GPIO_SetValue(1, (1<<28));
		delay();
		GPIO_ClearValue(1, (1<<28));
		delay();
#elif defined (IAR_LPC_1768)
		//blink LED1 (P1.25)
		GPIO_SetValue(1, (1<<25));
		delay();
		GPIO_ClearValue(1, (1<<25));
		delay();
#endif
	}

	_DBG_("Sleeping...");
	// Enter target power down mode
	CLKPWR_Sleep();

	// MCU will be here after waking up
	_DBG_("System wake-up! Second LED is blinking...");
	//turn off first LED
#ifdef MCB_LPC_1768
	GPIO_ClearValue(1, (1<<29));
#elif defined (IAR_LPC_1768)
	GPIO_SetValue(1, (1<<25));
#endif
	while (1)
	{
		//Blink second LED
#ifdef MCB_LPC_1768
		//blink LED P1.29
		GPIO_SetValue(1, (1<<29));
		delay();
		GPIO_ClearValue(1, (1<<29));
		delay();
#elif defined (IAR_LPC_1768)
		//blink LED2 (P0.4)
		GPIO_SetValue(0, (1<<4));
		delay();
		GPIO_ClearValue(0, (1<<4));
		delay();
#endif
	}
}

Example #2

File: gpdma_sleep.c Project: DesignByArie/lpc17xx.cmsis.driver.library

/*********************************************************************//**
 * @brief		c_entry: Main program body
 * @param[in]	None
 * @return 		int
 **********************************************************************/
int c_entry(void)
{
	GPDMA_Channel_CFG_Type GPDMACfg;

	/* Initialize debug via UART0
	 * – 115200bps
	 * – 8 data bit
	 * – No parity
	 * – 1 stop bit
	 * – No flow control
	 */
	debug_frmwrk_init();

	// print welcome screen
	print_menu();

	/* GPDMA block section -------------------------------------------- */
	/* Initialize buffer */
	_DBG_("Initialize Buffer...");
	Buffer_Init();

    /* Disable GPDMA interrupt */
    NVIC_DisableIRQ(DMA_IRQn);
    /* preemption = 1, sub-priority = 1 */
    NVIC_SetPriority(DMA_IRQn, ((0x01<<3)|0x01));

    /* Initialize GPDMA controller */
	GPDMA_Init();

	// Setup GPDMA channel --------------------------------
	// channel 0
	GPDMACfg.ChannelNum = 0;
	// Source memory
	GPDMACfg.SrcMemAddr = DMA_SRC;
	// Destination memory
	GPDMACfg.DstMemAddr = DMA_DST;
	// Transfer size
	GPDMACfg.TransferSize = DMA_SIZE;
	// Transfer width
	GPDMACfg.TransferWidth = GPDMA_WIDTH_WORD;
	// Transfer type
	GPDMACfg.TransferType = GPDMA_TRANSFERTYPE_M2M;
	// Source connection - unused
	GPDMACfg.SrcConn = 0;
	// Destination connection - unused
	GPDMACfg.DstConn = 0;
	// Linker List Item - unused
	GPDMACfg.DMALLI = 0;
	// Setup channel with given parameter
	GPDMA_Setup(&GPDMACfg);

	/* Reset terminal counter */
	Channel0_TC = 0;
	/* Reset Error counter */
	Channel0_Err = 0;

	_DBG_("Start GPDMA transfer and enter system in sleep mode...");

	// Enable GPDMA channel 0
	GPDMA_ChannelCmd(0, ENABLE);

	/* Enable GPDMA interrupt */
	NVIC_EnableIRQ(DMA_IRQn);

	/* Enter in sleep mode */
	CLKPWR_Sleep();

	/* Wait for GPDMA processing complete */
	while ((Channel0_TC == 0) && (Channel0_Err == 0));

	/* Verify buffer */
	Buffer_Verify();

	_DBG(compl_menu);

    /* Loop forever */
    while(1);
    return 1;
}