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More precise timestamp for the pressure measurement

pull/30/head
Pawel Jalocha 2020-09-25 01:29:14 +01:00
rodzic 0354f5fc14
commit 849a5c599a
1 zmienionych plików z 16 dodań i 5 usunięć
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21
main/sens.cpp
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@ -135,13 +135,15 @@ static void ProcBaro(void)
InitBaro(); // try to recover I2C bus and baro
return; }
TickType_t End=Start;
for(uint8_t Idx=0; Idx<16; Idx++)
{ uint8_t Err=Baro.AcquireRawPressure(); // take pressure measurement
if(Err==0) { Baro.CalcPressure(); AverPress+=Baro.Pressure; AverCount++; } // sum-up average pressure
TickType_t Time=xTaskGetTickCount()-Start; if(Time>=200) break; } // but no longer than 250ms to fit into 0.5 second slot
if(AverCount==0) { PipeCount=0; return ; } // and we summed-up some measurements
AverPress = ( (AverPress<<2) + (AverCount>>1) )/AverCount; // [0.25Pa]] make the average
End=xTaskGetTickCount();
TickType_t Time = End-Start; if(Time>=200) break; } // but no longer than 250ms to fit into 0.5 second slot
TickType_t MeasTick = Start + (End-Start)/2;
if(AverCount==0) { PipeCount=0; return ; } // and we summed-up some measurements
AverPress = ( (AverPress<<2) + (AverCount>>1) )/AverCount; // [0.25Pa]] make the average
#ifdef DEBUG_PRINT
xSemaphoreTake(CONS_Mutex, portMAX_DELAY);
Format_String(CONS_UART_Write, "BMP180: ");
@ -153,7 +155,10 @@ static void ProcBaro(void)
#endif
#endif
#if defined(WITH_BMP280) || defined(WITH_MS5607) || defined(WITH_BME280) || defined(WITH_MS5611)
TickType_t Start=xTaskGetTickCount();
uint8_t Err=Baro.Acquire();
TickType_t End=xTaskGetTickCount();
TickType_t MeasTick = Start + (End-Start)/2;
if(Err==0) { Baro.Calculate(); }
else { PipeCount=0; return; }
AverPress = Baro.Pressure;
@ -192,6 +197,9 @@ static void ProcBaro(void)
int32_t AltDiff = (PressDiff*(PLR>>4))/250; // [0.1 m]
int32_t Altitude=((AltAver.Out+2048)>>12)+AltDiff; // [0.1 m]
uint32_t Time = TimeSync_Time(MeasTick); // effective time of the pressure measurement
uint16_t msTime = TimeSync_msTime(MeasTick);
uint8_t Frac = Sec%10; // [0.1s]
if(Frac==0)
{ GPS_Position *PosPtr = GPS_getPosition(Sec/10); // get GPS position record for this second
@ -224,7 +232,10 @@ static void ProcBaro(void)
uint8_t Len=0; // start preparing the barometer NMEA sentence
Len+=Format_String(Line+Len, "$POGNB,");
Len+=Format_UnsDec(Line+Len, Sec, 3, 1); // [sec] measurement time
Len+=Format_UnsDec(Line+Len, Time%60, 2);
Line[Len++]='.';
Len+=Format_UnsDec(Line+Len, msTime/10, 2);
// Len+=Format_UnsDec(Line+Len, Sec, 3, 1); // [sec] measurement time
Line[Len++]=',';
Len+=Format_SignDec(Line+Len, Baro.Temperature, 2, 1); // [degC] temperature
Line[Len++]=',';