Initialisation depot

DCC-Centrale/Firmware/BaseStation/DCCpp_Uno/CurrentMonitor.cpp

@@ -0,0 +1,39 @@
+/**********************************************************************
+
+CurrentMonitor.cpp
+COPYRIGHT (c) 2013-2016 Gregg E. Berman
+
+Part of DCC++ BASE STATION for the Arduino
+
+**********************************************************************/
+
+#include "DCCpp_Uno.h"
+#include "CurrentMonitor.h"
+#include "Comm.h"
+
+///////////////////////////////////////////////////////////////////////////////
+
+CurrentMonitor::CurrentMonitor(int pin, char *msg){
+    this->pin=pin;
+    this->msg=msg;
+    current=0;
+  } // CurrentMonitor::CurrentMonitor
+  
+boolean CurrentMonitor::checkTime(){
+  if(millis()-sampleTime<CURRENT_SAMPLE_TIME)            // no need to check current yet
+    return(false);
+  sampleTime=millis();                                   // note millis() uses TIMER-0.  For UNO, we change the scale on Timer-0.  For MEGA we do not.  This means CURENT_SAMPLE_TIME is different for UNO then MEGA
+  return(true);  
+} // CurrentMonitor::checkTime
+  
+void CurrentMonitor::check(){
+  current=analogRead(pin)*CURRENT_SAMPLE_SMOOTHING+current*(1.0-CURRENT_SAMPLE_SMOOTHING);        // compute new exponentially-smoothed current
+  if(current>CURRENT_SAMPLE_MAX && digitalRead(SIGNAL_ENABLE_PIN_PROG)==HIGH){                    // current overload and Prog Signal is on (or could have checked Main Signal, since both are always on or off together)
+    digitalWrite(SIGNAL_ENABLE_PIN_PROG,LOW);                                                     // disable both Motor Shield Channels
+    digitalWrite(SIGNAL_ENABLE_PIN_MAIN,LOW);                                                     // regardless of which caused current overload
+    INTERFACE.print(msg);                                                                            // print corresponding error message
+  }    
+} // CurrentMonitor::check  
+
+long int CurrentMonitor::sampleTime=0;
+