I sucessfully used the mcp2515 with an Arduino Nano Every. Now I tried to upload the same code to the Adafruit Metro M0 Express, unfortunately this causes the Metro to "crash".
After uploading the code, the Metro stops the program (I added a blinking LED to the Code, so you can see if it is running). Also it loses the connection to the PC, since the Port does not show up anymore and I can't see the serial monitor. The only thing working is the "ON" LED on the Metro. Everything else seems to stop working after uploading the code.
I need to enable verbose mode for uploading and double press reset while uploading, so the Metro resets and the Port shows up again.
Down below is the code I am using. It is very similar to the "read" example.
I uncommented a lot of lines to see when the problem occurs. Already at the top there is a command to set a pin: MCP2515 mcp2515(10)
At this point the Metro already seems to have problems. I also tried using different pins instead of D10, but without any luck. Why would the Metro already have problems with this part? Could this be a problem with the missing EEPROM of the Metro M0?
`#include
include
struct can_frame canMsg;
// MCP2515 mcp2515(10); // this line causes problems? After uncommenting this line, the Metro loses connection
Hi,
I sucessfully used the mcp2515 with an Arduino Nano Every. Now I tried to upload the same code to the Adafruit Metro M0 Express, unfortunately this causes the Metro to "crash". After uploading the code, the Metro stops the program (I added a blinking LED to the Code, so you can see if it is running). Also it loses the connection to the PC, since the Port does not show up anymore and I can't see the serial monitor. The only thing working is the "ON" LED on the Metro. Everything else seems to stop working after uploading the code.
I need to enable verbose mode for uploading and double press reset while uploading, so the Metro resets and the Port shows up again.
Down below is the code I am using. It is very similar to the "read" example. I uncommented a lot of lines to see when the problem occurs. Already at the top there is a command to set a pin: MCP2515 mcp2515(10) At this point the Metro already seems to have problems. I also tried using different pins instead of D10, but without any luck. Why would the Metro already have problems with this part? Could this be a problem with the missing EEPROM of the Metro M0?
`#include
include
struct can_frame canMsg; // MCP2515 mcp2515(10); // this line causes problems? After uncommenting this line, the Metro loses connection
void setup() { Serial.begin(115200); pinMode(LED_BUILTIN, OUTPUT); // mcp2515.reset(); // mcp2515.setBitrate(CAN_125KBPS); // mcp2515.setNormalMode(); //
// Serial.println("------- CAN Read ----------"); // Serial.println("ID DLC DATA"); }
void loop() { digitalWrite(LED_BUILTIN, HIGH); // aktiviere LED delay(500); digitalWrite(LED_BUILTIN, LOW); // deaktiviere LED delay(500);
// 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(" "); // } //
//
// if(canMsg.data[0]==0x8E){ // Check if first Data of Message is correct // Serial.print("\nFirst Data of Msg1 correct: "); // Serial.print(canMsg.data[0], HEX); // } //
// Serial.println();
// } }`