/*
* Start measuring
*/
void EFM32_CapSenseSlider::start() {
if(_running == false) {
CAPLESENSE_Init(true);
CAPLESENSE_setupCallbacks((cbptr_t)_scanCallback.entry(), (cbptr_t)_channelCallback.entry());
blockSleepMode(EM2);
_running = true;
}
}
/**************************************************************************//**
* @brief Capsense demo loop
*****************************************************************************/
void capSenseDemo(void)
{
int32_t slider;
bool oldBoost = vboost;
/* Setup RTC. */
RTCDRV_Setup(cmuSelect_LFRCO, cmuClkDiv_32);
/* Setup capSense callbacks. */
CAPLESENSE_setupCallbacks(&capSenseScanComplete, &capSenseChTrigger);
/* Main loop */
while (1)
{
switch(demoState)
{
case DEMO_SLEEP_PREPARE:
{
/* Setup LESENSE in sleep mode. */
CAPLESENSE_setupLESENSE(true);
/* Disable LCD to avoid excessive current consumption */
SegmentLCD_Disable();
/* Disable Vdd check. */
VDDCHECK_Disable();
/* Go to sleep state. */
demoState = DEMO_SLEEP;
}
break;
case DEMO_SLEEP:
{
/* Go to sleep and wait until the measurement completes. */
CAPLESENSE_Sleep();
}
break;
case DEMO_SENSE_PREPARE:
{
/* Setup LESENSE in high-accuracy sense mode. */
CAPLESENSE_setupLESENSE(false);
/* Start timeout counter. */
RTCDRV_Trigger(1000U, &capSenseTimerFired);
/* Enable vboost */
SegmentLCD_Init(vboost);
/* Go to sense state. */
demoState = DEMO_SENSE;
}
break;
case DEMO_SENSE:
{
/* Go to sleep and wait until the measurement completes. */
CAPLESENSE_Sleep();
/* Get slider position. */
slider = CAPLESENSE_getSliderPosition();
if (-1 != slider)
{
/* Reset RTC */
RTC_Enable(false);
RTC_Enable(true);
}
capSenseAringUpdate(slider);
/* Check for change in input voltage. Enable vboost if necessary */
/* Initialize voltage comparator */
VDDCHECK_Init();
/* Check if voltage is below 3V, if so use voltage boost */
if (VDDCHECK_LowVoltage(2.9))
{
vboost = true;
if (oldBoost != vboost)
{
/* Enable vboost */
SegmentLCD_Init(vboost);
/* Use antenna symbol to signify enabling of vboost */
SegmentLCD_Symbol(LCD_SYMBOL_ANT, vboost);
}
oldBoost = vboost;
}
else
{
vboost = false;
}
switch (demoMode)
{
case (DEMOMODE_SCROLLTEXT):
capSenseScrollText();
break;
case (DEMOMODE_BARS):
capSenseBars();
break;
case (DEMOMODE_VALUES):
capSenseValues();
break;
default:
break;
}
}
break;
default:
{
;
}
break;
}
}
}
