MCP2515_TX_analog.ino

#include <SPI.h>
#include <mcp2515.h>
 
MCP2515 mcp2515(10);

void setup() {
  Serial.begin(115200);
 
  mcp2515.reset();
  mcp2515.setBitrate(CAN_125KBPS, MCP_8MHZ);
  mcp2515.setNormalMode();
}
 
void loop() {
  uint16_t adc = analogRead(A0);
  
  struct can_frame frame;
  frame.can_id = 0x7FF;
  frame.can_dlc = 2;
  frame.data[0] = adc >> 8;
  frame.data[1] = adc & 0xFF;

  if (mcp2515.sendMessage(&frame) == mcp2515.ERROR_OK) {
    Serial.println("Send analog value OK");
  } else {
    Serial.println("Send FAIL");
  }
  delay(50);
}