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CAN communication between SN65HVD234 and MCP2551
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ePowered RACING



Joined: 29 Dec 2020
Posts: 4

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PostPosted: Mon Jan 04, 2021 7:26 am     Reply with quote
Ok, so it seems the connections are good!

Could anyone suggest about the code? Such as a library to use with this transceiver, any configuration parameter I must use…
Ttelmah



Joined: 11 Mar 2010
Posts: 19552

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PostPosted: Mon Jan 04, 2021 8:01 am     Reply with quote
The transceiver makes no difference to the code.

However a thing that may, is default types. This is a critical difference between
the '8bit' PIC's, and their larger brethren. The default 'int' changes from being
an 8bit unsigned int, to being a signed 16bit int. Even if you use 'int8' for
example, this becomes signed on the 16bit PIC. Now generally the CCS
code has been rewritten to cope with this, but if for example you have
variables that are handing values to the library, you may be accidentally
passing 'signed' values without realising it....
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