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MAX_CURRENT restriction (caps motor shield value)

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This commit is contained in:
Harald Barth 2023-06-26 20:00:03 +02:00
parent dfba6c6fc1
commit 35fd912c60
2 changed files with 20 additions and 1 deletions
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6
MotorDriver.cpp
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@ -135,7 +135,11 @@ MotorDriver::MotorDriver(int16_t power_pin, byte signal_pin, byte signal_pin2, i
// float calculations or libraray code.
senseFactorInternal=sense_factor * senseScale;
tripMilliamps=trip_milliamps;
rawCurrentTripValue=mA2raw(trip_milliamps);
#ifdef MAX_CURRENT
if (MAX_CURRENT > 0 && MAX_CURRENT < tripMilliamps)
tripMilliamps = MAX_CURRENT;
#endif
rawCurrentTripValue=mA2raw(tripMilliamps);
if (rawCurrentTripValue + senseOffset > ADCee::ADCmax()) {
// This would mean that the values obtained from the ADC never

15
config.example.h
View File

@ -57,6 +57,21 @@ The configuration file for DCC-EX Command Station
// +-----------------------v
//
#define MOTOR_SHIELD_TYPE STANDARD_MOTOR_SHIELD
//
/////////////////////////////////////////////////////////////////////////////////////
//
// If you want to restrict the maximum current LOWER than what your
// motor shield can provide, you can do that here. For example if you
// have a motor shield that can provide 5A and your power supply can
// only provide 2.5A then you should restict the maximum current to
// 2.25A (90% of 2.5A) so that DCC-EX does shut off the track before
// your PS does shut DCC-EX. MAX_CURRENT is in mA so for this example
// it would be 2250, adjust the number according to your PS. If your
// PS has a higher rating than your motor shield you do not need this.
// You can use this as well if you are cautious and your trains do not
// need full current.
// #define MAX_CURRENT 2250
//
/////////////////////////////////////////////////////////////////////////////////////
//
// The IP port to talk to a WIFI or Ethernet shield.