using other transmit buffers in nxp lpc1766

hi
there is a sample code in
C:\Keil\ARM\Boards\Keil\MCB1700\CAN
about using can controller of nxp lpc1766.
but it use transmit buffer 1 for sending the data.
i want to use other buffers (like 2 ,3) for sending the data.
can any one tell me how i should change the code?
i attached the original sample source code to this document.

to change buffer you need to make selection in CMR register.. currently code is just selecting buffer 1 for sending data...

you can rewrite the write function to have selection of buffer you want to use..
make a switch case statement inside..

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