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2008 GM truck GMLAN
I know this isn't so much a EFI question but I wasnt sure where to post it. I am playing with an Uno v3/MCP2515 module. I am noob when it comes to GMLan or Can-BUS. So far I got it to where I am reading it and I also think I have it sending. I am running at 33K3bts. I've been looking at the GMLAN_bible but I am just not sure exactly what I am looking at or looking for. So I am going to post the code. can someone please put a can message that will do something like set fuel level, RPM, MPH or Temp. I just want to make sure its sending correctly before really get down this rabbit hole.
Code:
#include <SPI.h>#include <mcp2515.h>
struct can_frame canMsg1;
struct can_frame canMsg2;
MCP2515 mcp2515(10);
void setup() {
canMsg1.can_id = 0x0F6;
canMsg1.can_dlc = 8;
canMsg1.data[0] = 0x8E;
canMsg1.data[1] = 0x87;
canMsg1.data[2] = 0x32;
canMsg1.data[3] = 0xFA;
canMsg1.data[4] = 0x26;
canMsg1.data[5] = 0x8E;
canMsg1.data[6] = 0xBE;
canMsg1.data[7] = 0x86;
canMsg2.can_id = 0x036;
canMsg2.can_dlc = 8;
canMsg2.data[0] = 0x0E;
canMsg2.data[1] = 0x00;
canMsg2.data[2] = 0x00;
canMsg2.data[3] = 0x08;
canMsg2.data[4] = 0x01;
canMsg2.data[5] = 0x00;
canMsg2.data[6] = 0x00;
canMsg2.data[7] = 0xA0;
while (!Serial);
Serial.begin(115200);
SPI.begin();
mcp2515.reset();
mcp2515.setBitrate(CAN_33KBPS, MCP_8MHZ);
mcp2515.setNormalMode();
Serial.println("Example: Write to CAN");
}
void loop() {
mcp2515.sendMessage(&canMsg1);
mcp2515.sendMessage(&canMsg2);
Serial.println("Messages sent");
delay(1000);
}
Thanks in advance. I just want to prove to myself that this will work before I start my whole project. I want to make in the end something with a couple pots that will let you sweep gauges. I started with the 2007.5+ since its gm lan and easier to find data on instead of GM class 2. I also want to do one for the 03-07 later but one project at a time.