/* Put some of the peripheral in sleep mode */ void Chip_PMU_Sleep(LPC_PMU_T *pPMU, CHIP_PMU_MCUPOWER_T SleepMode) { if (SleepMode == PMU_MCU_DEEP_SLEEP) { Chip_PMU_DeepSleepState(pPMU); } else if (SleepMode == PMU_MCU_POWER_DOWN) { Chip_PMU_PowerDownState(pPMU); } else if (SleepMode == PMU_MCU_DEEP_PWRDOWN) { Chip_PMU_DeepPowerDownState(pPMU); } else { /* PMU_MCU_SLEEP */ Chip_PMU_SleepState(pPMU); } }
/** * @brief Enters sleep state until pinint signal received. */ void goToSleep(void) { Chip_GPIO_SetPinState(LPC_GPIO_PORT, 0, LCD_BACKLIGHT, 1); Chip_GPIO_SetPinState(LPC_GPIO_PORT, 0, RANGE_POWER_PIN, 0); // Give plenty of time to release switch: delayms(750); // Disable systick timer: SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk; // Only allow enabled IRQ's to wake us up: NVIC_DisableIRQ(ADC_SEQA_IRQn); g_go_to_sleep = 0; Chip_SYSCTL_EnablePINTWakeup(SW_LEFT_PININT); Chip_SYSCTL_EnablePINTWakeup(SW_RIGHT_PININT); SCB->SCR &= ~(SCB_SCR_SEVONPEND_Msk); Chip_PMU_SleepState(LPC_PMU); }
int __attribute__ ((noinline)) main(void) { /* set systick and start systick interrupt */ SysTick_Config(SYS_CORE_CLOCK/1000UL*(unsigned long)SYS_TICK_PERIOD_IN_MS); /* turn on GPIO */ Chip_GPIO_Init(LPC_GPIO_PORT); /* disable SWCLK and SWDIO, after reset, boot code may activate this */ Chip_SWM_DisableFixedPin(2); Chip_SWM_DisableFixedPin(3); /* turn on IOCON */ Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_IOCON); /* turn on switch matrix */ Chip_SWM_Init(); /* activate analog comperator */ Chip_ACMP_Init(LPC_CMP); /* let LED on pin 4 of the DIP8 blink */ Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, 0, 2); for(;;) { Chip_GPIO_SetPinOutHigh(LPC_GPIO_PORT, 0, 2); delay_micro_seconds(500000UL); Chip_GPIO_SetPinOutLow(LPC_GPIO_PORT, 0, 2); delay_micro_seconds(500000UL); } /* enter sleep mode: Reduce from 1.4mA to 0.8mA with 12MHz */ while (1) { SCB->SCR |= (1UL << SCB_SCR_SLEEPONEXIT_Pos); /* enter sleep mode after interrupt */ Chip_PMU_SleepState(LPC_PMU); /* enter sleep mode now */ } }
int32_t main(void) { int32_t i,cnt=0; uint8_t RC5_System_prev=0; uint8_t RC5_Command_prev=0; CHIP_PMU_MCUPOWER_T mcupower=PMU_MCU_SLEEP; SystemCoreClockUpdate(); // init GPIO Chip_GPIO_Init(LPC_GPIO_PORT); Chip_SYSCTL_PeriphReset(RESET_GPIO); // init SPI0 at SystemCoreClock speed Chip_SPI_Init(LPC_SPI0); Chip_SPI_ConfigureSPI(LPC_SPI0,SPI_MODE_MASTER| SPI_CLOCK_CPHA0_CPOL0| SPI_DATA_MSB_FIRST| SPI_SSEL_ACTIVE_LO); LPC_SPI0->DIV=0; Chip_SPI_Enable(LPC_SPI0); // init MRT Chip_MRT_Init(); // init SWM Chip_SWM_Init(); Chip_SWM_DisableFixedPin(SWM_FIXED_SWCLK);//PIO0_3 Chip_SWM_DisableFixedPin(SWM_FIXED_SWDIO);//PIO0_2 Chip_SWM_DisableFixedPin(SWM_FIXED_ACMP_I2);//PIO0_1 Chip_SWM_DisableFixedPin(SWM_FIXED_ACMP_I1);//PIO0_0 Chip_SWM_MovablePinAssign(SWM_SPI0_SCK_IO,CLK_PIN); Chip_SWM_MovablePinAssign(SWM_SPI0_MOSI_IO,MOSI_PIN); Chip_SWM_MovablePinAssign(SWM_CTIN_0_I,IR_PIN); Chip_SWM_Deinit(); // init onboard LED Chip_GPIO_SetPinState(LPC_GPIO_PORT,0,LED_PIN,true); Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT,0,LED_PIN); // init LCD reset pin Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT,0,RESET_PIN); // init LCD LCDInit(); LCDClearScreenBlack(); // init SCT Chip_SCT_Init(LPC_SCT); // set prescaler, SCT clock = 1 MHz, clear counter LPC_SCT->CTRL_L |= SCT_CTRL_PRE_L(SystemCoreClock/1000000-1) | SCT_CTRL_CLRCTR_L; sct_fsm_init(); NVIC_EnableIRQ(SCT_IRQn); // init PIO0_3 pin interrupt for wakeup from sleep mode Chip_SYSCTL_SetPinInterrupt(IR_IRQ,IR_PIN); Chip_PININT_EnableIntLow(LPC_PININT, PININTCH(IR_IRQ)); NVIC_EnableIRQ(PININT3_IRQn); Chip_SYSCTL_EnablePINTWakeup(IR_IRQ); // set sleep options Chip_SYSCTL_SetDeepSleepPD(SYSCTL_DEEPSLP_BOD_PD | SYSCTL_DEEPSLP_WDTOSC_PD); Chip_SYSCTL_SetWakeup(~(SYSCTL_SLPWAKE_IRCOUT_PD | SYSCTL_SLPWAKE_IRC_PD | SYSCTL_SLPWAKE_FLASH_PD )); LCDPutStr("kbiva.wordpress.com", MAX_X / 2 + 50, 10, WHITE, BLACK); LCDPutStr("RC5 Decoder", MAX_X / 2 + 35, 35, WHITE, BLACK); LCDPutStr("Frame:", MAX_X / 2 + 20, 1, WHITE, BLACK); LCDPutStr("System:", MAX_X / 2 + 5 , 1, WHITE, BLACK); LCDPutStr("Cmd:", MAX_X / 2 - 10, 1, WHITE, BLACK); LCDPutStr("Toggle:", MAX_X / 2 - 25, 1, WHITE, BLACK); LCDPutStr("Count:", MAX_X / 2 - 40, 1, WHITE, BLACK); while (1) { // put chip to sleep switch(mcupower) { case PMU_MCU_SLEEP: default: LCDPutStr("SLEEP ", MAX_X / 2 - 60, 10, WHITE, BLACK); Chip_PMU_SleepState(LPC_PMU); break; case PMU_MCU_DEEP_SLEEP: LCDPutStr("DEEP-SLEEP", MAX_X / 2 - 60, 10, WHITE, BLACK); Chip_PMU_DeepSleepState(LPC_PMU); break; case PMU_MCU_POWER_DOWN: LCDPutStr("POWER-DOWN", MAX_X / 2 - 60, 10, WHITE, BLACK); Chip_PMU_PowerDownState(LPC_PMU); break; } // start MRT timer channel 0 Chip_MRT_SetInterval(LPC_MRT_CH0, SystemCoreClock | MRT_INTVAL_LOAD); Chip_MRT_SetMode(LPC_MRT_CH0,MRT_MODE_ONESHOT); Chip_MRT_SetEnabled(LPC_MRT_CH0); // turn on onboard LED Chip_GPIO_SetPinState(LPC_GPIO_PORT,0,LED_PIN,false); // start SCT LPC_SCT->CTRL_L &= ~SCT_CTRL_HALT_L; // wait for timeout while(!RC5_timeout) {}; // stop SCT LPC_SCT->CTRL_L |= SCT_CTRL_HALT_L; if (RC5_flag) { // if frame received, output information on LCD if((RC5_System != RC5_System_prev) || (RC5_Command != RC5_Command_prev)) { cnt = 1; } else { cnt++; } for (i = 3; i >= 0; i--){ LCDPutChar(ascii[(RC5_Frame >> (i * 4)) & 0x0F],MAX_X / 2 + 20,80+(3-i)*7,WHITE, BLACK); if(i < 2) { if((RC5_System!=RC5_System_prev) || (RC5_Command!=RC5_Command_prev)){ LCDPutChar(ascii[(RC5_System >> (i * 4)) & 0x0F],MAX_X / 2 + 5,66+(3-i)*7,WHITE, BLACK); LCDPutChar(ascii[(RC5_Command >> (i * 4)) & 0x0F],MAX_X / 2 - 10,66+(3-i)*7,WHITE, BLACK); } } LCDPutChar(ascii[(cnt >> (i * 4)) & 0x0F],MAX_X / 2 - 40,80+(3-i)*7,WHITE, BLACK); } LCDPutStr(RC5_Toggle ? "ON ":"OFF", MAX_X / 2 - 25, 80, WHITE, BLACK); switch(RC5_Command) { case 0x50: mcupower = PMU_MCU_SLEEP; break; case 0x55: if(RC5_Toggle){ spi0Transfer(SLEEPOUT); spi0Transfer(DISPON); } else { spi0Transfer(DISPOFF); spi0Transfer(SLEEPIN); } break; case 0x56: mcupower = PMU_MCU_DEEP_SLEEP; break; case 0x6B: mcupower = PMU_MCU_POWER_DOWN; break; } RC5_System_prev = RC5_System; RC5_Command_prev = RC5_Command; } // turn off onboard LED Chip_GPIO_SetPinState(LPC_GPIO_PORT,0,LED_PIN,true); // clear flags RC5_flag = 0; RC5_timeout = 0; }
/* Handle interrupt from GPIO pin or GPIO pin mapped to PININT */ static void ProcessPowerState(CHIP_PMU_MCUPOWER_T crntPowerSetting) { volatile uint32_t tempTimeout; /* Output power status message, add separating space */ DEBUGSTR("\r\n"); /* Switch on current selected power setting */ switch (crntPowerSetting) { case PMU_MCU_SLEEP: default: DEBUGSTR("-----------------------------------------------------------------\r\n"); DEBUGSTR(" Entering SLEEP power setting\r\n"); DEBUGOUT(" (System will exit SLEEP in %d seconds)\r\n", POWER_CYCLE_SEC_DELAY); DEBUGSTR("-----------------------------------------------------------------\r\n\r\n"); /* Wait for all serial characters to be output */ DelayForSerialOutput(); /* Enter MCU Sleep mode */ Chip_PMU_SleepState(LPC_PMU); break; case PMU_MCU_DEEP_SLEEP: DEBUGSTR("-----------------------------------------------------------------\r\n"); DEBUGSTR(" Entering DEEP SLEEP power setting\r\n"); DEBUGOUT(" (System will exit DEEP SLEEP in %d seconds)\r\n", POWER_CYCLE_SEC_DELAY); DEBUGSTR("-----------------------------------------------------------------\r\n\r\n"); /* Wait for all serial characters to be output */ DelayForSerialOutput(); /* We should call Chip_SYSCTL_SetWakeup() to setup any peripherals we want to power back up on wakeup. For this example, we'll power back up the IRC, FLASH, the system oscillator, and the PLL */ Chip_SYSCTL_SetWakeup(~(SYSCTL_SLPWAKE_IRCOUT_PD | SYSCTL_SLPWAKE_IRC_PD | SYSCTL_SLPWAKE_FLASH_PD | SYSCTL_SLPWAKE_SYSOSC_PD | SYSCTL_SLPWAKE_SYSPLL_PD)); Chip_SYSCTL_EnableERP1PeriphWakeup(SYSCTL_ERP1_WAKEUP_RTCALARMINT); /* Enter MCU Deep Sleep mode */ Chip_PMU_DeepSleepState(LPC_PMU); break; case PMU_MCU_POWER_DOWN: DEBUGSTR("-----------------------------------------------------------------\r\n"); DEBUGSTR(" Entering POWER DOWN power setting\r\n"); DEBUGOUT(" (System will exit POWER DOWN in %d seconds)\r\n", POWER_CYCLE_SEC_DELAY); DEBUGSTR("-----------------------------------------------------------------\r\n\r\n"); /* Wait for all serial characters to be output */ DelayForSerialOutput(); /* We should call Chip_SYSCTL_SetWakeup() to setup any peripherals we want to power back up on wakeup. For this example, we'll power back up the IRC, FLASH, the system oscillator, and the PLL */ Chip_SYSCTL_SetWakeup(~(SYSCTL_SLPWAKE_IRCOUT_PD | SYSCTL_SLPWAKE_IRC_PD | SYSCTL_SLPWAKE_FLASH_PD | SYSCTL_SLPWAKE_SYSOSC_PD | SYSCTL_SLPWAKE_SYSPLL_PD)); Chip_SYSCTL_EnableERP1PeriphWakeup(SYSCTL_ERP1_WAKEUP_RTCALARMINT); /* Enter MCU Power down mode */ Chip_PMU_PowerDownState(LPC_PMU); break; case PMU_MCU_DEEP_PWRDOWN: DEBUGSTR("-----------------------------------------------------------------\r\n"); DEBUGSTR(" Entering DEEP POWER DOWN power setting\r\n"); DEBUGOUT(" (System will exit DEEP POWER DOWN in %d seconds)\r\n", POWER_CYCLE_SEC_DELAY); DEBUGSTR("-----------------------------------------------------------------\r\n\r\n"); /* Wait for all serial characters to be output */ DelayForSerialOutput(); /* Enable wakeup from deep power down mode due to RTC Alarm Match */ Chip_RTC_EnableWakeup(LPC_RTC, RTC_CTRL_ALARMDPD_EN); /* Enter MCU Deep Power down mode */ Chip_PMU_DeepPowerDownState(LPC_PMU); break; } }