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Significant improvements to analog sensor readings (Filtering and read strategy)

This commit is contained in:
Josh Stewart 2016-03-01 14:39:50 +11:00
parent 23021ccb84
commit 21d2078a4e
3 changed files with 13 additions and 7 deletions
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4
globals.h
View File

@ -46,8 +46,8 @@ const int map_page_size = 288;
// The following are alpha values for the ADC filters.
// Their values are from 0 to 255 with 0 being no filtering and 255 being maximum
#define ADCFILTER_TPS 128
#define ADCFILTER_CLT 210
#define ADCFILTER_IAT 128
#define ADCFILTER_CLT 180
#define ADCFILTER_IAT 180
#define ADCFILTER_O2 128
#define ADCFILTER_BAT 128

2
reference/speeduino.ini
View File

@ -62,7 +62,7 @@
endianness = little
nPages = 8
burnCommand = "B"
blockReadTimeout = 500
blockReadTimeout = 1000
pageSize = 288, 64, 288, 64, 288, 64, 64, 160
pageActivationDelay = 10
; pageActivate = ""

14
speeduino.ino
View File

@ -732,12 +732,14 @@ void loop()
{
currentStatus.TPSlast = currentStatus.TPS;
currentStatus.TPSlast_time = currentStatus.TPS_time;
analogRead(pinTPS);
byte tempTPS = fastMap1023toX(analogRead(pinTPS), 0, 1023, 0, 255); //Get the current raw TPS ADC value and map it into a byte
currentStatus.tpsADC = ADC_FILTER(tempTPS, ADCFILTER_TPS, currentStatus.tpsADC);
//Check that the ADC values fall within the min and max ranges (Should always be the case, but noise can cause these to fluctuate outside the defined range).
if (currentStatus.tpsADC < configPage1.tpsMin) { currentStatus.tpsADC = configPage1.tpsMin; }
else if(currentStatus.tpsADC > configPage1.tpsMax) { currentStatus.tpsADC = configPage1.tpsMax; }
currentStatus.TPS = map(currentStatus.tpsADC, configPage1.tpsMin, configPage1.tpsMax, 0, 100); //Take the raw TPS ADC value and convert it into a TPS% based on the calibrated values
byte tempADC = currentStatus.tpsADC; //The tempADC value is used in order to allow TunerStudio to recover and redo the TPS calibration if this somehow gets corrupted
if (currentStatus.tpsADC < configPage1.tpsMin) { tempADC = configPage1.tpsMin; }
else if(currentStatus.tpsADC > configPage1.tpsMax) { tempADC = configPage1.tpsMax; }
currentStatus.TPS = map(tempADC, configPage1.tpsMin, configPage1.tpsMax, 0, 100); //Take the raw TPS ADC value and convert it into a TPS% based on the calibrated values
currentStatus.TPS_time = currentLoopTime;
//Check for launch in (clutch) can be done around here too
@ -750,15 +752,18 @@ void loop()
if ((mainLoopCount & 255) == 1)
{
int tempReading;
tempReading = analogRead(pinCLT);
tempReading = fastMap1023toX(analogRead(pinCLT), 0, 1023, 0, 511); //Get the current raw CLT value
currentStatus.cltADC = ADC_FILTER(tempReading, ADCFILTER_CLT, currentStatus.cltADC);
currentStatus.coolant = cltCalibrationTable[currentStatus.cltADC] - CALIBRATION_TEMPERATURE_OFFSET; //Temperature calibration values are stored as positive bytes. We subtract 40 from them to allow for negative temperatures
tempReading = analogRead(pinIAT);
tempReading = map(analogRead(pinIAT), 0, 1023, 0, 511); //Get the current raw IAT value
currentStatus.iatADC = ADC_FILTER(tempReading, ADCFILTER_IAT, currentStatus.iatADC);
currentStatus.IAT = iatCalibrationTable[currentStatus.iatADC] - CALIBRATION_TEMPERATURE_OFFSET;
tempReading = analogRead(pinO2);
tempReading = map(analogRead(pinO2), 0, 1023, 0, 511); //Get the current O2 value.
currentStatus.O2ADC = ADC_FILTER(tempReading, ADCFILTER_O2, currentStatus.O2ADC);
currentStatus.O2 = o2CalibrationTable[currentStatus.O2ADC];
@ -769,6 +774,7 @@ void loop()
currentStatus.O2_2 = o2CalibrationTable[currentStatus.O2_2ADC];
*/
tempReading = analogRead(pinBat);
tempReading = fastMap1023toX(analogRead(pinBat), 0, 1023, 0, 245); //Get the current raw Battery value. Permissible values are from 0v to 24.5v (245)
currentStatus.battery10 = ADC_FILTER(tempReading, ADCFILTER_BAT, currentStatus.battery10);