a Lua script for Nick

firmware/controllers/lua/examples/vw-sensors-from-ptbus.txt

@@ -0,0 +1,98 @@
+--
+-- Tested on 2006 Passat
+--
+
+-- 640
+MOTOR_1 = 0x280
+-- 648
+MOTOR_2 = 0x288
+-- 896
+MOTOR_3 = 0x380
+-- 1152
+MOTOR_5 = 0x480
+
+-- this controls onCanRx rate as well!
+setTickRate(300)
+
+timeout = 3000
+
+cltSensor = Sensor.new("clt")
+cltSensor : setTimeout(timeout)
+
+iatSensor = Sensor.new("iat")
+iatSensor : setTimeout(timeout)
+
+rpmSensor = Sensor.new("rpm")
+rpmSensor : setTimeout(timeout)
+
+mapSensor = Sensor.new("map")
+mapSensor : setTimeout(timeout)
+
+hexstr = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, "A", "B", "C", "D", "E", "F" }
+
+function toHexString(num)
+	if num == 0 then
+		return '0'
+	end
+
+	local result = ""
+	while num > 0 do
+		local n = num % 16
+		result = hexstr[n + 1] ..result
+		num = math.floor(num / 16)
+	end
+	return result
+end
+
+function arrayToString(arr)
+	local str = ""
+	local index = 1
+	while arr[index] ~= nil do
+		str = str.." "..toHexString(arr[index])
+		index = index + 1
+	end
+	return str
+end
+
+function getBitRange(data, bitIndex, bitWidth)
+ byteIndex = bitIndex >> 3
+ shift = bitIndex - byteIndex * 8
+ value = data[1 + byteIndex]
+ if (shift + bitWidth > 8) then
+  value = value + data[2 + byteIndex] * 256
+ end
+ mask = (1 << bitWidth) - 1
+ return (value >> shift) & mask
+end
+
+function onMotor1(bus, id, dlc, data)
+ rpm = getBitRange(data, 16, 16) * 0.25
+ rpmSensor : set(rpm)
+ print("RPM " .. rpm)
+end
+
+function onMotor2(bus, id, dlc, data)
+end
+
+function onMotor3(bus, id, dlc, data)
+ iat = getBitRange(data, 8, 8) * 0.75 - 48
+ pps = getBitRange(data, 16, 8) * 0.40
+
+ print("IAT " .. iat .. " PPS " .. pps)
+ iatSensor : set(iat)
+ ppsSensor : set(pps)
+end
+
+function onMotor5(bus, id, dlc, data)
+ fuelConsumption = getBitRange(data, 16, 15)
+  print("fuelConsumption " .. fuelConsumption)
+
+end
+
+canRxAdd(ECU_BUS, MOTOR_1, onMotor1)
+canRxAdd(ECU_BUS, MOTOR_2, onMotor2)
+canRxAdd(ECU_BUS, MOTOR_3, onMotor3)
+canRxAdd(ECU_BUS, MOTOR_5, onMotor5)
+
+function onTick()
+end