/**************************************************************************//**
* @brief Update clock and wait in EM2 for RTC tick.
*****************************************************************************/
void clockLoop(void)
{
LCD_FrameCountInit_TypeDef frameInit;
LCD_AnimInit_TypeDef animInit;
/* Write Gecko and display, and light up the colon between hours and minutes. */
SegmentLCD_Symbol(LCD_SYMBOL_COL10, 1);
SegmentLCD_Write("Wonder");
/* Setup frame counter */
frameInit.enable = true; /* Enable framecounter */
frameInit.top = 15; /* Generate event every 15 frames. */
frameInit.prescale = lcdFCPrescDiv1; /* No prescaling */
LCD_FrameCountInit(&frameInit);
/* Animate half ring - by special board design it is possible to achieve */
/* "slide in/slide out" effect */
animInit.enable = true; /* Enable animation after initialization. */
animInit.AReg = 0x00; /* Initial A register value */
animInit.BReg = 0x0F; /* Initial B register value */
animInit.AShift = lcdAnimShiftLeft; /* Shift A register left */
animInit.BShift = lcdAnimShiftLeft; /* Shift B register left */
animInit.animLogic = lcdAnimLogicOr; /* Enable segment if A or B */
animInit.startSeg = 8; /* Initial animation segment */
LCD_AnimInit(&animInit);
while (1)
{
checkVoltage();
SegmentLCD_Number(hours * 100 + minutes);
EMU_EnterEM2(true);
}
}
/**************************************************************************//**
* @brief Main function
*****************************************************************************/
int main(void)
{
int msCountDown;
const int msDelay = 100;
char displayString[8];
LCD_AnimInit_TypeDef anim = {
true,
0x00,
lcdAnimShiftNone,
0x03,
lcdAnimShiftLeft,
lcdAnimLogicOr
};
LCD_FrameCountInit_TypeDef fc = {
true,
2, /* Update each 2nd frame */
lcdFCPrescDiv1,
};
/* Chip errata */
CHIP_Init();
/* If first word of user data page is non-zero, enable eA Profiler trace */
BSP_TraceProfilerSetup();
/* Configure push button interrupts */
gpioSetup();
/* Setup SysTick Timer for 1 msec interrupts */
if (SysTick_Config(SystemCoreClockGet() / 1000)) while (1) ;
/* Initialize LCD controller */
SegmentLCD_Init(false);
/* Run countdown for user to select energy mode */
msCountDown = 4000; /* milliseconds */
while(msCountDown > 0)
{
if ( eMode >=3 && eMode<=4) {
sprintf(displayString, "EM%d", eMode);
SegmentLCD_Write(displayString);
}
switch( eMode )
{
case 0:
SegmentLCD_Write("EM0 32M");
break;
case 1:
SegmentLCD_Write("EM1 32M");
break;
case 2:
SegmentLCD_Write("EM2 32K");
break;
case 5:
SegmentLCD_Write("EM2+RTC");
break;
case 6:
SegmentLCD_Write("RTC+LCD");
break;
}
SegmentLCD_Number(msCountDown);
Delay(msDelay);
msCountDown -= msDelay;
}
/* Disable components, reenable when needed */
SegmentLCD_Disable();
RTC_Enable(false);
/* Go to energy mode and wait for reset */
switch(eMode)
{
case 0:
/* Disable pin input */
GPIO_PinModeSet(gpioPortB, 10, gpioModeDisabled, 1);
/* Disable systick timer */
SysTick->CTRL = 0;
/* 32Mhz primes demo - running off HFXO */
CMU_ClockSelectSet(cmuClock_HF, cmuSelect_HFXO);
/* Disable HFRCO, LFRCO and all unwanted clocks */
CMU->OSCENCMD = CMU_OSCENCMD_HFRCODIS;
CMU->OSCENCMD = CMU_OSCENCMD_LFRCODIS;
CMU->HFPERCLKEN0 = 0x00000000;
CMU->HFCORECLKEN0 = 0x00000000;
CMU->LFACLKEN0 = 0x00000000;
CMU->LFBCLKEN0 = 0x00000000;
CMU->LFCLKSEL = 0x00000000;
/* Supress Conditional Branch Target Prefetch */
MSC->READCTRL = MSC_READCTRL_MODE_WS1SCBTP;
{
#define PRIM_NUMS 64
uint32_t i, d, n;
uint32_t primes[PRIM_NUMS];
/* Find prime numbers forever */
while (1)
{
primes[0] = 1;
for (i = 1; i < PRIM_NUMS;)
{
for (n = primes[i - 1] + 1; ;n++)
{
for (d = 2; d <= n; d++)
{
if (n == d)
{
primes[i] = n;
goto nexti;
}
if (n%d == 0) break;
}
}
nexti:
i++;
}
}
}
case 1:
/* Disable pin input */
GPIO_PinModeSet(gpioPortB, 10, gpioModeDisabled, 1);
/* Disable systick timer */
SysTick->CTRL = 0;
CMU_ClockSelectSet(cmuClock_HF, cmuSelect_HFXO);
/* Disable HFRCO, LFRCO and all unwanted clocks */
CMU->OSCENCMD = CMU_OSCENCMD_HFRCODIS;
CMU->OSCENCMD = CMU_OSCENCMD_LFRCODIS;
CMU->HFPERCLKEN0 = 0x00000000;
CMU->HFCORECLKEN0 = 0x00000000;
CMU->LFACLKEN0 = 0x00000000;
CMU->LFBCLKEN0 = 0x00000000;
CMU->LFCLKSEL = 0x00000000;
EMU_EnterEM1();
break;
case 2:
/* Enable LFRCO */
CMU->OSCENCMD = CMU_OSCENCMD_LFRCOEN;
/* Disable everything else */
CMU->OSCENCMD = CMU_OSCENCMD_LFXODIS;
CMU->HFPERCLKEN0 = 0x00000000;
CMU->HFCORECLKEN0 = 0x00000000;
CMU->LFACLKEN0 = 0x00000000;
CMU->LFBCLKEN0 = 0x00000000;
CMU->LFCLKSEL = 0x00000000;
EMU_EnterEM2(false);
break;
case 3:
/* Disable all clocks */
CMU->OSCENCMD = CMU_OSCENCMD_LFXODIS;
CMU->OSCENCMD = CMU_OSCENCMD_LFRCODIS;
CMU->HFPERCLKEN0 = 0x00000000;
CMU->HFCORECLKEN0 = 0x00000000;
CMU->LFACLKEN0 = 0x00000000;
CMU->LFBCLKEN0 = 0x00000000;
EMU_EnterEM3(false);
break;
case 4:
EMU_EnterEM4();
break;
case 5:
/* EM2 + RTC - only briefly wake up to reconfigure each second */
CMU->LFCLKSEL = CMU_LFCLKSEL_LFA_LFRCO;
while(1)
{
RTCDRV_Trigger(2000, NULL);
EMU_EnterEM2(false);
}
case 6:
default:
/* EM2 + RTC + LCD (if battery slips below 3V vboost should be */
/* enabled) */
CMU->LFCLKSEL = CMU_LFCLKSEL_LFA_LFRCO;
SegmentLCD_Init(false);
/* Animate LCD */
LCD_FrameCountInit(&fc);
LCD_AnimInit(&anim);
while(1)
{
SegmentLCD_Write("Energy");
/* Sleep in EM2 */
RTCDRV_Trigger(2000,NULL);
EMU_EnterEM2(false);
SegmentLCD_Write("Micro");
/* Sleep in EM2 */
RTCDRV_Trigger(2000,NULL);
EMU_EnterEM2(false);
}
}
return 0;
}
