void WhoAmI(void)
{
PrintS(BR_DEVICE_NAME);
PrintF("Msp430 Rev:%c HwVer:%d", GetMsp430HardwareRevision(), HardwareVersion());
PrintF("BoardConfig: %d", GetBoardConfiguration());
PrintF("Calibration: %d", ValidCalibration());
PrintF("Errata: %d", Errata());
}
/* 80 us
*
* conversion time = 13 * ADC12DIV * 1/FreqAdcClock
* 13 * 8 * 1/5e6 = 20.8 us
*/
void BatterySenseCycle(void)
{
static unsigned char Index = 0;
xSemaphoreTake(AdcMutex, portMAX_DELAY);
BATTERY_SENSE_ENABLE();
ENABLE_REFERENCE();
/* low_bat_en assertion to bat_sense valid is ~100 ns */
/* Start battery sense conversion */
AdcCheck();
CLEAR_START_ADDR();
ADC12CTL1 |= ADC12CSTARTADD_1;
ENABLE_ADC();
WaitForAdcBusy();
/* Convert the ADC count for the battery input into a voltage
* ADC12MEM1: Counts Battery Voltage in ADC counts
* Result: Battery voltage in millivolts */
unsigned int Value = (unsigned int)(CONVERSION_FACTOR_BATTERY * (double)ADC12MEM1);
if (ValidCalibration()) Value += GetBatteryCalibrationValue();
/* smoothing algorithm: cut extreme values (gap > 20) */
unsigned char Prev = (Index == 0) ? MAX_SAMPLES - 1: Index - 1;
if (Sample[BATTERY][Prev])
{
int Gap = Value - Sample[BATTERY][Prev];
if (Charging())
{
if (Gap > GAP_BIG) Gap = GAP_BIG;
else if (Gap < GAP_SMALL_NEGATIVE) Gap = GAP_SMALL_NEGATIVE;
}
else
{
if (Gap > GAP_SMALL) Gap = GAP_SMALL;
else if (Gap < GAP_BIG_NEGATIVE) Gap = GAP_BIG_NEGATIVE;
}
Sample[BATTERY][Index] = Sample[BATTERY][Prev] + Gap;
}
else Sample[BATTERY][Index] = Value;
if (++Index >= MAX_SAMPLES) Index = 0;
BATTERY_SENSE_DISABLE();
EndAdcCycle(); //xSemaphoreGive()
}
void InitRealTimeClock(void)
{
RtcInUseMask = 0;
// stop it
RTCCTL01 = RTCHOLD;
// use calibration data to adjust real time clock frequency
if (ValidCalibration())
{
signed char RtcCalibrationValue = GetRtcCalibrationValue();
if (RtcCalibrationValue < 0)
{
RtcCalibrationValue = -RtcCalibrationValue;
RTCCTL2 = RtcCalibrationValue & RTCCAL_VALUE_MASK;
}
else
{
RTCCTL2 = RtcCalibrationValue & RTCCAL_VALUE_MASK;
/* adjust up */
RTCCTL2 |= RTCCALS;
}
}
// Set RTC mode and BCD format
RTCCTL01 |= RTCMODE | RTCBCD;
// set 128 Hz rate for prescale 0 interrupt
RTCPS0CTL |= RT0IP_7;
// enable 1 pulse per second interrupt using prescale 1
RTCPS1CTL |= RT1IP_6 | RT1PSIE;
// 1 Hz calibration output
RTCCTL23 |= RTCCALF_3;
// setting the peripheral selection bit makes the other I/O control a don't care
// P2.4 = 1 Hz RTC calibration output
// Direction needs to be set as output
RTC_1HZ_PORT_SEL |= RTC_1HZ_BIT;
RTC_1HZ_PORT_DIR |= RTC_1HZ_BIT;
RestoreRtc();
// Enable the RTC
RTCCTL01 &= ~RTCHOLD;
}
