Extended Teensy3.6 pin definitions

[heatcat]

I need to update some code that was very poorly documented. We are using the chip from the teensy3.6 (MK66) in our own hardware, but still developing in the arduino / teensyduino environment. It looks like we are using some non-standard pins for the Serial1 port, defined as such:

  pinMode( RD1, OUTPUT );
    digitalWrite(RD1, HIGH);
    pinMode(5, INPUT);
    pinMode( ReadEnable, OUTPUT );
    digitalWrite(ReadEnable, LOW);
    Serial.begin( 115200 );
        Serial1.setRX(98);
Serial1.setTX(99);
Serial1.begin( 115200 );

Where did pins 98 and 99 come from? And RD1, for that matter? (note that this code does work in our hardware) I seem to remember there being some kind of definition file, and I actually have a snippet of it:

////////////////////////////////////////////////////////////////////
//                        TX                                      //
////////////////////////////////////////////////////////////////////
//MK66 PIN      ||  PTE24  ||   PTE12   ||   PTE26   ||   PTE25   //
//----------------------------------------------------------------//  
//DIGITAL PIN   ||  33     ||   97      ||   24      ||   34      //
//----------------------------------------------------------------//  
//SPI REGISTER  ||  1      ||   2       ||   3       ||   4       //
//----------------------------------------------------------------//  
////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////
//MK66 PIN      ||  PTE10  ||   PTE11   ||   PTE08   ||   PTE09   //  
//----------------------------------------------------------------//   
//DIGITAL PIN   ||  56     ||   57      ||   95      ||   96      //
//----------------------------------------------------------------//  
//SPI REGISTER  ||   5     ||   6       ||   7       ||   8       //
//----------------------------------------------------------------//  

//////////////////////////////////////////
//                        RX            //
//////////////////////////////////////////
//MK66 PIN      ||  PTD0  ||   PTD01   // 
//--------------------------------------//   
//DIGITAL PIN   ||  2     ||   14      //
//--------------------------------------// 
//////////////////////////////////////////

Does anyone know where this stuff is defined or what file that snippet is from? I can do the work that I need to do, I just need to know where that pin definition is. Many thanks in advance!

For completeness: we intercept the .hex file that is generated and program our chip in-system using JTAG.

 

[rcarr]

I suggest you look in ......hardware/Teensy/avr/cores/Teensy3/Serial1.c to see if it was hacked to support the pin numbers 98,99. Otherwise calling Serial1.begin seems to set up the baud rate but not any pins.

My 'completely just a guess' is this code snippet is something to allow your JTAG to work.