PRJ - CAN Master#

#include <SPI.h>
#include "mcp2515_can.h"
const int SPI_CS_PIN = 10;
mcp2515_can CAN(SPI_CS_PIN); // Set CS pin
void setup() {
  //  Serial.begin(115200);
  Serial.begin(115200);
   while(!Serial){};
   // init can bus : baudrate = 500k
   while (CAN_OK != CAN.begin(CAN_500KBPS)) {
      Serial.println("CAN init fail, retry...");
      delay(100);
   }
   Serial.println("CAN init ok!");
}

unsigned char stmp[8] = {0, 0, 0, 0, 0, 0, 0, 0};  //最多只能有8字节数据
void loop() {
   // send data: id = 0x00, standrad frame, data len = 8, stmp: data buf
   // 多字节计数器
   stmp[7] = stmp[7] + 1;
   if (stmp[7] == 100) {
      stmp[7] = 0;
      stmp[6] = stmp[6] + 1;
      if (stmp[6] == 100) {
         stmp[6] = 0;
         stmp[5] = stmp[5] + 1;
      }
   }
   // 上面的计数器实现可以将 if 嵌套扁平化吗?
   
   CAN.sendMsgBuf(0x00, 0, 0, 8, stmp);
  //  CAN.sendMsgBuf(0x00, 0, rtrBit, byte len, const byte *buf, bool wait_sent = true); 
   delay(100); // send data per 100ms
  //  Serial.println("CAN BUS sendMsgBuf ok!");
}