c3dc28479a
added conditional compilation to use the newer Dcc.pin() method that used digitalPinToInterrupt() to determine the Ext Interrupt Number based on Arduino Pin to reduce confusion
133 lines
4.3 KiB
C++
133 lines
4.3 KiB
C++
#include <NmraDcc.h>
|
|
|
|
// This Example shows how to use the library with the Iowa Scaled Engineering ARD-DCCSHIELD
|
|
// You can find out more about this DCC Interface here: http://www.iascaled.com/store/ARD-DCCSHIELD
|
|
//
|
|
// For more information refer to the file: README.md here: https://github.com/IowaScaledEngineering/ard-dccshield
|
|
//
|
|
// This demo assumes the following Jumper settings on the ARD-DCCSHIELD
|
|
//
|
|
// JP1 - I2C Pull-Up Resistors - Don't Care
|
|
// JP2 - (Pins 1-2) I2C /IORST JP2 - Don't-Care
|
|
// JP2 - (Pins 3-4) - DCC Signal to Arduino Pin - OFF
|
|
// JP3 - I2C /INT and /OE - Don't-Care
|
|
// JP4 - DCC Signal to Arduino Pin - D2 ON
|
|
// JP5 - Arduino Powered from DCC - User Choice
|
|
// JP6 - Boards without VIO - User Choice
|
|
// JP7 - Enable Programming ACK - 1-2 ON 3-4 ON
|
|
//
|
|
// It is a very basic DCC Accessory Decoder that does nothing except allow CV Read/Write and
|
|
// you can also print every DCC packet by uncommenting the "#define NOTIFY_DCC_MSG" line below
|
|
#define NOTIFY_DCC_MSG
|
|
|
|
// You can also print other Debug Messages uncommenting the line below
|
|
#define DEBUG_MSG
|
|
|
|
// Un-Comment the line below to Enable DCC ACK for Service Mode Programming Read CV Capablilty
|
|
#define ENABLE_DCC_ACK 15 // This is A1 on the Iowa Scaled Engineering ARD-DCCSHIELD DCC Shield
|
|
|
|
// Define the Arduino input Pin number for the DCC Signal
|
|
#define DCC_PIN 2
|
|
|
|
NmraDcc Dcc ;
|
|
|
|
struct CVPair
|
|
{
|
|
uint16_t CV;
|
|
uint8_t Value;
|
|
};
|
|
|
|
CVPair FactoryDefaultCVs [] =
|
|
{
|
|
{CV_ACCESSORY_DECODER_ADDRESS_LSB, DEFAULT_ACCESSORY_DECODER_ADDRESS & 0xFF},
|
|
{CV_ACCESSORY_DECODER_ADDRESS_MSB, DEFAULT_ACCESSORY_DECODER_ADDRESS >> 8},
|
|
};
|
|
|
|
uint8_t FactoryDefaultCVIndex = 0;
|
|
|
|
void notifyCVResetFactoryDefault()
|
|
{
|
|
#ifdef DEBUG_MSG
|
|
Serial.println("notifyCVResetFactoryDefault: Settings CVs to Factory Defaults") ;
|
|
#endif // Make FactoryDefaultCVIndex non-zero and equal to num CV's to be reset
|
|
// to flag to the loop() function that a reset to Factory Defaults needs to be done
|
|
FactoryDefaultCVIndex = sizeof(FactoryDefaultCVs)/sizeof(CVPair);
|
|
};
|
|
|
|
// This function is called by the NmraDcc library when a DCC ACK needs to be sent
|
|
// Calling this function should cause an increased 60ma current drain on the power supply for 6ms to ACK a CV Read
|
|
#ifdef ENABLE_DCC_ACK
|
|
void notifyCVAck(void)
|
|
{
|
|
#ifdef DEBUG_MSG
|
|
Serial.println("notifyCVAck") ;
|
|
#endif
|
|
// Configure the DCC CV Programing ACK pin for an output
|
|
pinMode( ENABLE_DCC_ACK, OUTPUT );
|
|
|
|
// Generate the DCC ACK 60mA pulse
|
|
digitalWrite( ENABLE_DCC_ACK, HIGH );
|
|
delay( 10 ); // The DCC Spec says 6ms but 10 makes sure... ;)
|
|
digitalWrite( ENABLE_DCC_ACK, LOW );
|
|
}
|
|
#endif
|
|
|
|
#ifdef NOTIFY_DCC_MSG
|
|
void notifyDccMsg( DCC_MSG * Msg)
|
|
{
|
|
Serial.print("notifyDccMsg: ") ;
|
|
for(uint8_t i = 0; i < Msg->Size; i++)
|
|
{
|
|
Serial.print(Msg->Data[i], HEX);
|
|
Serial.write(' ');
|
|
}
|
|
Serial.println();
|
|
}
|
|
#endif
|
|
|
|
void notifyCVChange(uint16_t CV, uint8_t Value)
|
|
{
|
|
#ifdef DEBUG_MSG
|
|
Serial.print("notifyCVChange: CV: ") ;
|
|
Serial.print(CV,DEC) ;
|
|
Serial.print(" Value: ") ;
|
|
Serial.println(Value, DEC) ;
|
|
#else
|
|
Value = Value; // Silence Compiler Warnings...
|
|
CV = CV;
|
|
#endif
|
|
}
|
|
|
|
void setup()
|
|
{
|
|
Serial.begin(115200);
|
|
|
|
Serial.println("NMRA DCC Iowa Scaled Engineering ARD-DCCSHIELD Example");
|
|
|
|
// Setup which External Interrupt, the Pin it's associated with that we're using and enable the Pull-Up
|
|
// Many Arduino Cores now support the digitalPinToInterrupt() function that makes it easier to figure out the
|
|
// Interrupt Number for the Arduino Pin number, which reduces confusion.
|
|
#ifdef digitalPinToInterrupt
|
|
Dcc.pin(DCC_PIN, 0);
|
|
#else
|
|
Dcc.pin(0, DCC_PIN, 1);
|
|
#endif
|
|
|
|
// Call the main DCC Init function to enable the DCC Receiver
|
|
Dcc.init( MAN_ID_DIY, 10, CV29_ACCESSORY_DECODER, 0 );
|
|
|
|
Serial.println("Init Done");
|
|
}
|
|
|
|
void loop()
|
|
{
|
|
// You MUST call the NmraDcc.process() method frequently from the Arduino loop() function for correct library operation
|
|
Dcc.process();
|
|
|
|
if( FactoryDefaultCVIndex && Dcc.isSetCVReady())
|
|
{
|
|
FactoryDefaultCVIndex--; // Decrement first as initially it is the size of the array
|
|
Dcc.setCV( FactoryDefaultCVs[FactoryDefaultCVIndex].CV, FactoryDefaultCVs[FactoryDefaultCVIndex].Value);
|
|
}
|
|
}
|