main.c File Reference

#include <avr/io.h>
#include <avr/pgmspace.h>
#include "can.h"

Include dependency graph for main.c:

Go to the source code of this file.

Functions
int	main (void)

Variables
const uint8_t can_filter[]	PROGMEM

Function Documentation

main()

int main

(

void

)

Definition at line 81 of file main.c.

Variable Documentation

PROGMEM

const uint8_t can_filter [] PROGMEM

Initial value:

= 
{
        
        MCP2515_FILTER(0),                              
        MCP2515_FILTER(0),                              
        
        
        MCP2515_FILTER_EXTENDED(0),             
        MCP2515_FILTER_EXTENDED(0),             
        MCP2515_FILTER_EXTENDED(0),             
        MCP2515_FILTER_EXTENDED(0),             
        
        MCP2515_FILTER(0),                              
        MCP2515_FILTER_EXTENDED(0),             
}

Set filters and masks.

The filters are divided in two groups:

Group 0: Filter 0 and 1 with corresponding mask 0. Group 1: Filter 2, 3, 4 and 5 with corresponding mask 1.

If a group mask is set to 0, the group will receive all messages.

If you want to receive ONLY 11 bit identifiers, set your filters and masks as follows:

 uint8_t can_filter[] PROGMEM = {
    // Group 0
    MCP2515_FILTER(0),                              // Filter 0
    MCP2515_FILTER(0),                              // Filter 1

    // Group 1
    MCP2515_FILTER(0),                              // Filter 2
    MCP2515_FILTER(0),                              // Filter 3
    MCP2515_FILTER(0),                              // Filter 4
    MCP2515_FILTER(0),                              // Filter 5

    MCP2515_FILTER(0),                              // Mask 0 (for group 0)
    MCP2515_FILTER(0),                              // Mask 1 (for group 1)
 };

If you want to receive ONLY 29 bit identifiers, set your filters and masks as follows:

uint8_t can_filter[] PROGMEM = {
   // Group 0
   MCP2515_FILTER_EXTENDED(0),             // Filter 0
   MCP2515_FILTER_EXTENDED(0),             // Filter 1
   
   // Group 1
   MCP2515_FILTER_EXTENDED(0),             // Filter 2
   MCP2515_FILTER_EXTENDED(0),             // Filter 3
   MCP2515_FILTER_EXTENDED(0),             // Filter 4
   MCP2515_FILTER_EXTENDED(0),             // Filter 5
   
   MCP2515_FILTER_EXTENDED(0),             // Mask 0 (for group 0)
   MCP2515_FILTER_EXTENDED(0),             // Mask 1 (for group 1)
};

If you want to receive both 11 and 29 bit identifiers, set your filters and masks as follows:

Definition at line 60 of file main.c.