missing function in lib; no member CANRaw::getNumRxBoxes()

[OlliHenri]

I always run in problems compiling example: DataDisplay2.ino or any function receiving NMEA2000.

I fixed it as follows:

There is a missing function / error in actual GITHUB versions of librarys (2019 02 03) :

NMEA2000_due.cpp

and

due_can.cpp

in setup() we call open() that will, besides other things setup the filters but it can´t bcs there is no member CANRaw::getNumRxBoxes() in due_can.cpp !!

I tried to write one by using CANRaw::findFreeRXMailbox() as example,

/**

• \brief Find unused RX mailbox adapted to NMEA2000_due and return its number
• without this function Arduino says:
• error: 'class CANRaw' has no member named 'getNumRxBoxes' */ int CANRaw::getNumRxBoxes() { for (int c = 0; c < 8; c++) { if (mailbox_get_mode(c) == CAN_MB_RX_MODE) { if (mailbox_get_id(c) == 0) { return c; } } } return -1; }

but my version is not really working, but at least the code compiles now.

I solved it by manually setup the filters by after open() calling :

//By default there are 7 mailboxes for each device that are RX boxes //This sets each mailbox to have an open filter that will accept extended //or standard frames int filter; //extended for (filter = 0; filter < 3; filter++) { Can0.setRXFilter(filter, 0, 0, true); Can1.setRXFilter(filter, 0, 0, true); }

Now it works!

• Oliver -

[ttlappalainen]

getNumRxBoxes is on line 276 on due_can.h. Did you download it from my github or somewhere else.

[Tur-Thure]

I try to compile example ActisenseListenerSender in NMEA2000 downloaded from Github. And I get the following error below. What am I doing wrong?

C:\Users\ULundqvist\Documents\Arduino\libraries\NMEA2000_due\NMEA2000_due.cpp: In member function 'virtual bool tNMEA2000_due::CANOpen()': C:\Users\ULundqvist\Documents\Arduino\libraries\NMEA2000_due\NMEA2000_due.cpp:87:39: error: 'class CANRaw' has no member named 'getNumRxBoxes' for (mailbox = 0; mailbox < CANbus->getNumRxBoxes()-1; mailbox++) { ^ C:\Users\ULundqvist\Documents\Arduino\libraries\NMEA2000_due\NMEA2000_due.cpp:91:28: error: 'class CANRaw' has no member named 'getNumRxBoxes' for (; mailbox < CANbus->getNumRxBoxes(); mailbox++) { ^ exit status 1 Error compiling for board Arduino Due (Native USB Port).