Acrosser Technology AIV-HM76V0FL Series, Руководство пользователя, Страница: 92 / 107

Description: This function sends out CAN packages over the CAN bus.
Parameters:
If there is more than one CAN packet to send, these CAN
packages are stored in an
array of type ‘CanMsg’. This function sends out packets in a sequential fashion.
The memory address of the first CAN packet to be sent is pointed at by the
parameter ‘buffer’. The number of CAN packets to be sent is indicated by the
parameter ‘count’.
Return Value: If this function sends the CAN packet successfully, it returns 0, any
other returned value stands for error.
Here is an example:
If the CAN packets in the array ‘canAry[]’ have been initialized. The code listed
below will send out the CAN packets in the ‘canAry[]’ over the CAN bus.
unsigned int result = 0;
struct CanMsg canAry[30];
/* …
Initialize the CAN packages in the canAry[30]
*/
result = sendCanMessages( canAry, 30 );
if( result != 0)
fprintf( stderr, “Send CAN package error!\n”);
5. Syntax:
i32 getCanMessage( struct CanMsg *buffer, u8 count )
Description:
This function receives CAN packets from the CAN bus subsystem.
Parameters:
This function stores received CAN packages sequentially at an
array of type ‘CanMsg’. The number of packages to receive is indicated by the
parameter ‘count’.
Return Value : If this function receives the CAN packet successfully, it returns 0,
any other returned value stands for error.
Here is an example:
If the array ‘canAry[]’ of type ‘CanMsg’ has been declared and allocated. The
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