Second Mask and Filters Not Working about arduino_can_bus_mcp2515 HOT 2 OPEN

I made progress by placing the following code within the IF statements that pertain to them.

lcd.setCursor(0,0);
lcd.print("Set Speed");
lcd.setCursor(11,0);
lcd.print(" ");
lcd.setCursor(0,3);
lcd.print(" ");
lcd.setCursor(11,0);
lcd.print(TrlCtlSetSpd,0);
lcd.setCursor(0,3);
lcd.print(RPMStatus);

Along with this I eliminated the printing of blanks to erase previous text. This now applies all the filters to the canbus.

It is interesting though because I receive some messages much more frequently than others even though they should be sending at the same rate.

Could I just be overloading the arduino with how many messages it is receiving?

from arduino_can_bus_mcp2515.

I am able to get the first mask to work which corresponds to the first 2 filters. The issue is with the second mask and second set of filters (3-6). Is there something in the library I need to change to enable both masks?

There is no way to disable certain masks or filters. It is possible your program is doing too much in the receive if statement that messages are overflowing the first receive buffer in the protocol controller which moves that message to the second buffer, overwriting its contents. If you want to turn this off, you will need to modify the .cpp file of the library to disable the bukt bit, see below.

        //Change this
        mcp2515_modifyRegister(MCP_RXB0CTRL,
        MCP_RXB_RX_MASK | MCP_RXB_BUKT_MASK,
        MCP_RXB_RX_ANY | MCP_RXB_BUKT_MASK);

        //To this
        mcp2515_modifyRegister(MCP_RXB0CTRL,
        MCP_RXB_RX_MASK | MCP_RXB_BUKT_MASK,
        MCP_RXB_RX_ANY);

Could I just be overloading the arduino with how many messages it is receiving?

That is definitely possible. You are also updating the LCD with every received message. There are places where elseif statements would improve performance. I'd also suggest implementing a modified version of the "blink without delay" sketch included with the Ardunio IDE to update your LCD at a specific rate outside of the receive if statement.

It is interesting though because I receive some messages much more frequently than others even though they should be sending at the same rate.

I've explored CAN on several vehicles and I've never seen messages come at the same rate. Some are 10Hz, some at 1Hz and a few at 20Hz or faster.

from arduino_can_bus_mcp2515.