Acrosser Technology AR-B6005, User Manual, Page: 54 / 66

subsystem. Filter0 ~ filter1 are associated with mask0. Filter2 ~ filter4 are associated with mask1.
Here is the Mask/Filter truth table:
Mask bit
n
Filter bit
n
Message
ID bit n
Accept or reject bit n
0 x x Accept
1 0 0 Accept
1 0 1 Reject
1 1 0 Reject
1 1 1 Accept
Note: x = don’t care
Parameters: This parameter ‘mask’ is a pointer to a variable of type ‘CanMask’. Users use the
field ‘maskId’ to indicate the mask they want and the API put the setting of the mask in the ‘mask’
field.
struct CanMask {
u8 maskId; // 0 or 1
u32 mask;
}
Return Value: If this function receives the mask setting successfully, it returns 0, any other
returned value stands for error.
For example:
struct CanMask a_mask;
a_mask.maskId = 0; // indicate the mask0
i32 result;
result = getCanMask(&a_mask); // The setting of the mask is put at
// a_mask.mask
if( result != 0)
printf(“Fail to get mask!\n”);
7. Syntax:
i32 setCanMask(struct CanMask mask)
Description: This function sets the bit patterns to the indicated mask. The target mask is indicated
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