Emtron ECU

Configuration

This script integrates the Emtron ECU with RaceCapture/Pro telemetry, using the factory standard CAN bus mapping

Baud Rate

The default baud rate for Emtron is 1mbps.

You can configure this on the CAN bus configuration page in the RaceCapture App.

Channels

TPS

CAN ID: 1251
Bytes: 1,2 (little endian)
Scaling: 1000 = 0.0% ; 2000 = 100.0%
Precision: 0.1

Lua Script


setTickRate(30)

--set up virtual channels
rpm_id = addChannel ("RPM", 25, 0, 0, 10000, "RPM")
coolant_id = addChannel ("Coolant", 1, 1, -30, 200, "Celsius")
afr_id = addChannel ("AFR", 10, 3, 0, 5, "Lambda")
tps_id = addChannel("TPS", 10, 1, 0, 100, "%")
igntiming_id = addChannel("IgnTiming", 10, 1, -30, 50, "Degrees")

function process_rpm(data)
    local rpm = ((data[2] * 256 + data[1]))
    setChannel(rpm_id, rpm)
end
function process_coolant(data)
    local coolant = ((data[6] * 256 + data[5])) * 0.1 - 50
    coolant = (coolant * 9) / 5 + 32
    setChannel(coolant_id, coolant)
end
function process_afr(data)
    local afr = ((data[2] * 256 + data[1])) * 0.001
    setChannel(afr_id, afr)
end
function process_tps(data)
    local tps = ((data[2] * 256 + data[1])) * 0.1 - 100
    setChannel(tps_id, tps)
end
function process_igntiming(data)
    local igntiming = ((data[4] * 256 + data[3])) * 0.1 - 100
    setChannel(igntiming_id, igntiming)
end

function onTick()
    repeat --will drain CAN buffer on each tick
        id, e, data = rxCAN(0)
        if id == 1250 then process_rpm(data) end
        if id == 1250 then process_coolant(data) end
        if id == 1251 then process_tps(data) end
        if id == 1254 then process_afr(data) end
        if id == 1256 then process_igntiming(data) end

    until id == nil
end