asi test nspire 4.2

require "asi"

local msgBuffer = {};

local asiStateCallback = function(state)
    print("asiStateCallback:")
    print("state = ", state)
    if state == asi.ON then
        startScanning()
    end
end

local asiAddStateListenerErr = asi.addStateListener(asiStateCallback)
if (asiAddStateListenerErr) then
    print("Error in asiAddStateListenerErr: ", asiAddStateListenerErr)
end


local portFoundCallback = function(port)
    print("portFoundCallback:")
    print("port identifier = ", port:getIdentifier())
    print("port state = ", port:getState())
end

function startScanning()
    print("Starting scan")
    local asiStartScanningErr = asi.startScanning(portFoundCallback)
    if (asiStartScanningErr) then
        print("Error in asiStartScanningErr: ", asiStartScanningErr)
    end
    platform.window:invalidate()
end

function on.paint(gc, x, y, w, h)
    for i,str in ipairs(msgBuffer) do
        gc:drawString(str, 5, (i-1)*20+5, "top")
    end
    gc:drawString("asi.isScanning() = " .. tostring(asi.isScanning()), 5, h-20, "top")
end