Been searching for weeks to establish a simple communication between an arduino and MS2.But can't get it to work :/
Anybody that has a basic sketch?
All i want is to read simple data like rpm,clt, etc basic stuff
I want to stay on the 325 firmware sow can request messages comes in iirc?
Or are there other,easier solutions?
Thanks!!
Code: Select all
#include <SPI.h>
#include "mcp_can.h"
//raw readings
int seconds = 0;
int pw1 = 0;
int pw2 = 0;
int rpm = 0;
int adv = 0;
float afrtgt1 = 0.0;
float baro = 0;
float MAP = 0;
float mat = 0;
float clt = 0;
int tps = 0;
float bat = 1;
float afr1 = 1;
int cel_status = 0;
unsigned long previousMillis = 0;
unsigned char Flag_Recv = 0;
unsigned char len = 0;
unsigned char buf[8];
INT32U canId = 0x000;
char str[20];
MCP_CAN CAN(10); // Set CS to pin 10
void setup()
{
Serial.begin(115200);
;
CAN.begin(CAN_500KBPS); // init can bus : baudrate = 500k
CAN.init_Mask(0,0,0x7ff);
CAN.init_Mask(1,0,0x7ff);
//CAN.init_Filt(0,0,0x5f0);
//CAN.init_Filt(1,0,0x5f2);
//CAN.init_Filt(2,0,0x5f3);
//CAN.init_Filt(3,0,0x0);
//CAN.init_Filt(4,0,0x0);
//CAN.init_Filt(5,0,0x0);
}
void loop() {
canRead();
//rpmSmoothing();
canDisplay();
}
void canRead() {
if(CAN_MSGAVAIL == CAN.checkReceive()) { // check if data coming
CAN.readMsgBuf(&len, buf); // read data, len: data length, buf: data buf
switch (CAN.getCanId()) {
case 0x5f0:
seconds = word(buf[0] , buf[1]);
pw1 = word(buf[2] , buf[3]);
pw2 = word(buf[4] , buf[5]);
rpm = word(buf[6] , buf[7]);
break;
case 0x5f1: // Group 1
adv = word(buf[0] , buf[1]);
afrtgt1 = buf[4];
//mat = word(buf[4] , buf[5]);
//clt = word(buf[6] , buf[7]);
break;
case 0x5f2: // Group 2
baro = word(buf[0] , buf[1]);
MAP = word(buf[2] , buf[3]);
mat = word(buf[4] , buf[5]);
clt = word(buf[6] , buf[7]);
break;
case 0x5f3: // Group 3
tps = ((buf[0] * 256) + buf[1]);
bat = ((buf[2] * 256) + buf[3]);
afr1 = ((buf[4] * 256) + buf[5]);
//afr2 = (((buf[6] *256) + buf[7]);
break;
}
}
}
void canDisplay() {
const int interval = 50;
unsigned long currentMillis = millis();
//refresh rate
if (currentMillis - previousMillis >= interval) { //if time elapsed is greater than the signal interval
previousMillis = currentMillis; //then reset time
Serial.print(" Snds ");
Serial.print(seconds);
Serial.print(" RPM ");
Serial.print(rpm);
Serial.print(" PW1 ");
Serial.print(pw1/1000, 2);
Serial.print(" ADV ");
Serial.print(adv/10, 1);
Serial.print(" AFRtgt ");
Serial.print(afrtgt1/10, 1);
Serial.print(" AFR ");
Serial.print(afr1/10, 1);
Serial.print(" MAP ");
Serial.print(MAP/10, 1);
Serial.print(" CLT ");
Serial.print(clt/10, 1);
Serial.print(" TPS ");
Serial.print(tps/10);
Serial.println(" ");
}
