I am trying to learn C and in the process also howto use
the CANbus. Now, Ive read that there are bugs in the CAN lib.
I have enough problems with C alone, w/o bugs in the core-can-lib
so if someone would like to share a fixed version of the CAN-lib we could
ask James to put the bugfixed AN-source on www.piclist.com ?
Link to the CAN-lib:
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1824&appnote=en011822
Comments/questions on my current problem with AN738 so far
is mixed in with the source below:
#include "can18xx8.h"
#include <p18cxxx.h>
// CAN module related variables
typedef unsigned long NewMessage;
typedef BYTE NewMessageData[8];
typedef BYTE MessageData[8];
typedef BYTE NewMessageLen;
enum CAN_RX_MSG_FLAGS NewMessageFlags;
typedef BYTE RxFilterMatch;
// Above I added 'typdef' and 'enum' that helped to get it compiled beyond
// CAN_RX_MSG_FLAGS NewMessageFlags; which failed before.
// I am not sure if enum is the same as typedef but atleast it compiles.
// The intention here must be to declare the variable NewMessageFlags
// as of type CAN_RX_MSG_FLAGS ?
// Application specific initialization code follows
// ------------------------------------------------
// Setup the Node for 1 Megabits/sec using a 40MHz clock
CANInitialize(1, // SJW
1, // BRP
8, // PHSEG1
8, // PHSEG2
3, // PROPSEG
CAN_CONFIG_PHSEG2_PRG_BIT & CAN_CONFIG_VALID_STD_MSG & CAN_CONFIG_STD_MSG &
CAN_CONFIG_DBL_BUFFER_ON);
// I get syntax error on the line above starting with: CANInitialize...
// its defined in the headerfile "can18xx8.h" as:
void CANInitialize(BYTE SJW,
BYTE BRP,
BYTE PHSEG1,
BYTE PHSEG2,
BYTE PROPSEG,
enum CAN_CONFIG_FLAGS config);
What can be wrong?? TIA
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