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float memory saver

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This commit is contained in:
Asbelos 2022-06-06 17:37:23 +01:00
parent 5f568c05b9
commit 2b2012ef1d
4 changed files with 24 additions and 9 deletions
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19
MotorDriver.cpp
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@ -67,16 +67,23 @@ MotorDriver::MotorDriver(VPIN power_pin, byte signal_pin, byte signal_pin2, int8
pinMode(faultPin, INPUT);
}
senseFactor=sense_factor;
// This conversion performed at compile time so the remainder of the code never needs
// float calculations or libraray code.
senseFactorInternal=sense_factor * senseScale;
tripMilliamps=trip_milliamps;
rawCurrentTripValue=(int)(trip_milliamps / sense_factor);
rawCurrentTripValue=mA2raw(trip_milliamps);
if (currentPin==UNUSED_PIN)
DIAG(F("MotorDriver ** WARNING ** No current or short detection"));
else
else {
DIAG(F("MotorDriver currentPin=A%d, senseOffset=%d, rawCurrentTripValue(relative to offset)=%d"),
currentPin-A0, senseOffset,rawCurrentTripValue);
// self testing diagnostic for the non-float converters... may be removed when happy
// DIAG(F("senseFactorInternal=%d raw2mA(1000)=%d mA2Raw(1000)=%d"),
// senseFactorInternal, raw2mA(1000),mA2raw(1000));
}
// prepare values for current detection
sampleDelay = 0;
lastSampleTaken = millis();
@ -164,10 +171,10 @@ int MotorDriver::getCurrentRawInInterrupt() {
}
unsigned int MotorDriver::raw2mA( int raw) {
return (unsigned int)(raw * senseFactor);
return (int32_t)raw * senseFactorInternal / senseScale;
}
int MotorDriver::mA2raw( unsigned int mA) {
return (int)(mA / senseFactor);
unsigned int MotorDriver::mA2raw( unsigned int mA) {
return (int32_t)mA * senseScale / senseFactorInternal;
}
void MotorDriver::getFastPin(const FSH* type,int pin, bool input, FASTPIN & result) {

11
MotorDriver.h
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@ -79,7 +79,7 @@ class MotorDriver {
virtual int getCurrentRaw();
virtual int getCurrentRawInInterrupt();
virtual unsigned int raw2mA( int raw);
virtual int mA2raw( unsigned int mA);
virtual unsigned int mA2raw( unsigned int mA);
inline bool canBrake() {
return brakePin!=UNUSED_PIN;
}
@ -108,7 +108,14 @@ class MotorDriver {
FASTPIN fastSignalPin, fastSignalPin2, fastBrakePin,fastFaultPin;
bool dualSignal; // true to use signalPin2
bool invertBrake; // brake pin passed as negative means pin is inverted
float senseFactor;
// Raw to milliamp conversion factors avoiding float data types.
// Milliamps=rawADCreading * sensefactorInternal / senseScale
//
// senseScale is chosen as 256 to give enough scale for 2 decimal place
// raw->mA conversion with an ultra fast optimised integer multiplication
int senseFactorInternal; // set to senseFactor * senseScale
static const int senseScale=256;
int senseOffset;
unsigned int tripMilliamps;
int rawCurrentTripValue;

2
StringFormatter.cpp
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@ -104,7 +104,7 @@ void StringFormatter::send2(Print * stream,const FSH* format, va_list args) {
case 'b': stream->print(va_arg(args, int), BIN); break;
case 'o': stream->print(va_arg(args, int), OCT); break;
case 'x': stream->print(va_arg(args, int), HEX); break;
case 'f': stream->print(va_arg(args, double), 2); break;
//case 'f': stream->print(va_arg(args, double), 2); break;
//format width prefix
case '-':
formatLeft=true;

1
version.h
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@ -6,6 +6,7 @@
#define VERSION "4.0.3"
// 4.0.3 Track Manager additions:
// Float eliminated saving >1.5kb PROGMEM and speed.
// SET_TRACK(track,mode) Functions (A-H, MAIN|PROG|DC|DCX|OFF)
// New DC track function and DCX reverse polarity function
// TrackManager DCC & DC up to 8 Districts Architecture