/* 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;
}
}