Hello,

I am using the the CAN write and CAN read examples provided with this library, using an Arduino UNO in both ends. The transmitter is continously sending a constant message, and the receiver is able to just receive 3 messages and then nothing.

Is the CAN read example code incomplete? do I need to clear the buffers to receive more messages?

The datasheet of the MCP2515 says the following:

When a message is moved into either of the receive
buffers, the appropriate RXnIF bit (CANINTF) is set.
This bit must be cleared by the MCU in order to allow a
new message to be received into the buffer. This bit
provides a positive lockout to ensure that the MCU has
finished with the message before the MCP2515
attempts to load a new message into the receive buffer.

I try to clear that bit by using the function: mcp2515.clearInterrupts();, however that doesn' work.

Here is my code inside the void loop:

`
void loop() {
if (mcp2515.readMessage(&canMsg) == MCP2515::ERROR_OK) {
Serial.print(canMsg.can_id, HEX); // print ID
Serial.print(" ");
Serial.print(canMsg.can_dlc, HEX); // print DLC
Serial.print(" ");

for (int i = 0; i<canMsg.can_dlc; i++)  {  // print the data
  Serial.print(canMsg.data[i],HEX);
  Serial.print(" ");
}

Serial.println();      

}
else if(mcp2515.readMessage(&canMsg) == MCP2515::ERROR_FAIL){
Serial.println("Error reading CAN message");
}
else if(mcp2515.readMessage(&canMsg) == MCP2515::ERROR_NOMSG){
Serial.println("NO MSG");
mcp2515.clearInterrupts();
delay(1000);
}
else{
uint8_t stat = mcp2515.getStatus();
Serial.println(stat);
delay(1000);
}
}

`

Thanks for your help,