New config option SUPPORT_MOTOR_SERVO

Uncomment SUPPORT_MOTOR_SERVO if you have an RC motor controller
connected to the motor output. Do not forget to remove capacitor from
the low pass filter of the motor output.

Author: jenkie

Arduino_Pedelec_Controller/Arduino_Pedelec_Controller.ino

@@ -38,6 +38,11 @@ Features:
 #include "menu.h"            //on the go menu
 #include "serial_command.h"       //serial (bluetooth) communication stuff
 
+#ifdef SUPPORT_MOTOR_SERVO   //RC motor controller connected to motor output
+#include <Servo.h>
+Servo motorservo;
+#endif
+
 #ifdef SUPPORT_BMP085
 #include <Wire.h>
 #include "BMP085.h"          //library for altitude and temperature measurement using http://www.watterott.com/de/Breakout-Board-mit-dem-BMP085-absoluten-Drucksensor     
@@ -452,6 +457,10 @@ void setup()
     torque_zero=analogRead_noISR(option_pin);
 #endif
 
+#ifdef SUPPORT_MOTOR_SERVO
+motorservo.attach(throttle_out);
+#endif
+
 #ifdef DEBUG_MEMORY_USAGE
     Serial.print(MY_F("memFree after setup:"));
     Serial.print(memFree());
@@ -590,12 +599,6 @@ void loop()
     }
     firstrun=false;                                     //first loop run done (ok, up to this line :))
 
-//Check power-off condition ---------------------------------------------------------------------------------------------
-    if ((voltage<20.0)&&(voltage_2s>6.0)) //save to EEPROM when battery disconnect detected. Do this only if not running on usb power
-    {
-        save_shutdown();
-    }
-
 //Are we pedaling?---------------------------------------------------------------------------------------------------------
 #ifdef SUPPORT_PAS
     if (((millis()-last_pas_event)>500)||(pas_failtime>pas_tolerance))
@@ -699,7 +702,11 @@ void loop()
     if (throttle_stat<5||spd>curr_spd_max2)
 #endif
     {throttle_write=motor_offset;}
+#ifdef SUPPORT_MOTOR_SERVO
+    motorservo.writeMicroseconds(throttle_write);
+#else
     analogWrite(throttle_out,throttle_write);
+#endif
 
 #ifdef SUPPORT_DISPLAY_BACKLIGHT
     handle_backlight();
@@ -1241,6 +1248,7 @@ void read_eeprom()
 
 void save_shutdown()
 {
+  Serial.println("stop");
   digitalWrite(throttle_out,0); //turn motor off
   //power saving stuff. This is critical if battery is disconnected.
   EIMSK=0; //disable interrupts

Arduino_Pedelec_Controller/config.h

@@ -133,6 +133,7 @@ const int fixed_throttle_in_watts = 250;         //number of watts to set as thr
 #define CONTROL_MODE_TORQUE 2            //power = x*power of the biker, see also description of power_poti_max!
 #define CONTROL_MODE CONTROL_MODE_NORMAL //Set your control mode here
 
+//#define SUPPORT_MOTOR_SERVO      //RC Motor controller with PWM input is used. Do not forget to remove capacitor from the low pass filter of the output to the motor controller.
 //#define SUPPORT_MOTOR_GUESS   //enable guess of motor drive depending on current speed. Usefull for motor controllers with speed-throttle to optimize response behaviour
 #define SUPPORT_BATTERY_CHARGE_DETECTION //support detection if the battery was charged -> reset wh / trip km / mah counters if detected.
 const byte battery_charged_min_voltage = 20;  //minimum battery voltage to consider it charged. Useful to prevent "false positives".
@@ -148,8 +149,8 @@ const int throttle_offset=196;           //Offset voltage of throttle control wh
 const int throttle_max=832;              //Offset voltage of throttle control when in "MAX" position (0..1023 = 0..5V)
 const int poti_offset=0;                 //Offset voltage of poti when in "0" position (0..1023 = 0..5V)
 const int poti_max=1023;                 //Offset voltage of poti when in "MAX" position (0..1023 = 0..5V)
-const int motor_offset=50;               //Offset for throttle output where Motor starts to spin (0..255 = 0..5V)
-const int motor_max=200;                 //Maximum input value for motor driver (0..255 = 0..5V)
+const int motor_offset=50;               //Offset for throttle output where Motor starts to spin (0..255 = 0..5V). Default: 50. In Servo mode this value is about 1000
+const int motor_max=200;                 //Maximum input value for motor driver (0..255 = 0..5V). Default: 200. In Servo mode this value is about 2000
 const int spd_idle=55;                   //idle speed of motor in km/h - may be much higher than real idle speed (depending on controller)
 const boolean startingaidenable = true;  //enable starting aid?
 const int startingaid_speed = 6;         //starting aid up to this speed. 6km/h is the limit for legal operation of a Pedelec by EU-wide laws