fome-fw/firmware/controllers/lua/examples/xcp-prototyping.txt

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-- just first few lines of XCP protocol
-- this controls onCanRx rate as well!
setTickRate(100)
XCP_ID = 0x7EF
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
STD_CONNECT = 0x01
canRxAdd(XCP_ID)
function onCanRx(bus, id, dlc, data)
print('got CAN id=' ..id ..' dlc=' ..dlc .. arrayToString(data))
if data[1] == STD_CONNECT then
masterCounter = data[2]
print ('STD_CONNECT ' .. masterCounter)
resp = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
resp[1] = 0xFF
resp[3] = masterCounter
txCan(1, 0x7EE, 0, resp)
end
end
function onTick()
end