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        def flash_upload(serial_port, resources_dir, firmware_file, hardware='x86'):
    firmware_file = firmware_file.replace("/", "").replace("\\", "")  # make sure no evil injection
    FIRMWARE = os.path.join(resources_dir, "firmware", firmware_file)
    if not os.path.exists(FIRMWARE):
        print "ERROR: invalid firmware path"
        return

    if hardware == 'x86':
        DEVICE = "atmega328p"
        CLOCK = "16000000"
        PROGRAMMER = "arduino"
        BITRATE = "115200"
     
        if sys.platform == "darwin":  # OSX
            AVRDUDEAPP    = os.path.join(resources_dir, "firmware/tools_osx/avrdude")
            AVRDUDECONFIG = os.path.join(resources_dir, "firmware/tools_osx/avrdude.conf")
        
        elif sys.platform == "win32": # Windows
            AVRDUDEAPP    = os.path.join(resources_dir, "firmware", "tools_win", "avrdude")
            AVRDUDECONFIG = os.path.join(resources_dir, "firmware", "tools_win", "avrdude.conf")
        
        elif sys.platform == "linux" or sys.platform == "linux2":  #Linux
            AVRDUDEAPP    = os.path.join(resources_dir, "/usr/bin/avrdude")
            AVRDUDECONFIG = os.path.join(resources_dir, "/etc/avrdude.conf")

        # call avrdude, returns 0 on success
        command = ('"%(dude)s" -c %(programmer)s -b %(bps)s -P %(port)s -p %(device)s -C "%(dudeconf)s" -Uflash:w:"%(firmware)s":i' 
            % {'dude':AVRDUDEAPP, 'programmer':PROGRAMMER, 'bps':BITRATE, 'port':serial_port, 'device':DEVICE, 'dudeconf':AVRDUDECONFIG, 'firmware':FIRMWARE})

        print command
        return subprocess.call(command, shell=True)

        # PROGRAMMER = "avrisp"  # old way, required pressing the reset button            
        # os.system('%(dude)s -c %(programmer)s -b %(bps)s -P %(port)s -p %(device)s -C %(dudeconf)s -B 10 -F -U flash:w:%(firmware)s:i' 
        #     % {'dude':AVRDUDEAPP, 'programmer':PROGRAMMER, 'bps':BITRATE, 'port':serial_port, 'device':DEVICE, 'dudeconf':AVRDUDECONFIG, 'firmware':FIRMWARE})

        # fuse setting taken over from Makefile for reference
        #os.system('%(dude)s -U hfuse:w:0xd2:m -U lfuse:w:0xff:m' % {'dude':AVRDUDEAPP})
    
    elif hardware in ['beaglebone', 'raspberrypi']:
        # Make sure you have avrdude installed:
        # beaglebone:
        # opkg install libreadline5_5.2-r8.9_armv4.ipk
        # opkg install avrdude_5.10-r1.9_armv7a.ipk
        # get the packages from http://www.angstrom-distribution.org/repo/
        # raspberrypi:
        # sudo apt-get install avrdude

        AVRDUDEAPP    = "avrdude"
        AVRDUDECONFIG = "/etc/avrdude.conf"
        SERIAL_PORT = serial_port
        DEVICE = "atmega328p"
        PROGRAMMER = "arduino"    # use this for bootloader
        SERIAL_OPTION = '-P %(port)s' % {'port':SERIAL_PORT}
        BITRATE = "115200"

        command = ('"%(dude)s" -c %(programmer)s -b %(bps)s %(serial_option)s -p %(device)s -C "%(dudeconf)s" -Uflash:w:"%(product)s":i' %
                  {'dude':AVRDUDEAPP, 'programmer':PROGRAMMER, 'bps':BITRATE, 'serial_option':SERIAL_OPTION, 'device':DEVICE, 'dudeconf':AVRDUDECONFIG, 'product':FIRMWARE})

        ### Trigger the atmega328's reset pin to invoke bootloader

        if hardware == 'beaglebone':
            print "Flashing from BeagleBone ..."
            # The reset pin is connected to GPIO2_7 (2*32+7 = 71).
            # Setting it to low triggers a reset.
            # echo 71 > /sys/class/gpio/export
            try:
                fw = file("/sys/class/gpio/export", "w")
                fw.write("%d" % (71))
                fw.close()
                fwb = file("/sys/class/gpio/export", "w")
                fwb.write("%d" % (73))
                fwb.close()
            except IOError:
                # probably already exported
                pass
            # set the gpio pin to output
            # echo out > /sys/class/gpio/gpio71/direction
            fw = file("/sys/class/gpio/gpio71/direction", "w")
            fw.write("out")
            fw.close()
            fwb = file("/sys/class/gpio/gpio73/direction", "w")
            fwb.write("out")
            fwb.close()
            # set the gpio pin low -> high
            # echo 1 > /sys/class/gpio/gpio71/value
            fw = file("/sys/class/gpio/gpio71/value", "w")
            fw.write("0")
            fw.flush()
            fwb = file("/sys/class/gpio/gpio73/value", "w")
            fwb.write("0")
            fwb.flush()
            time.sleep(0.5)
            fw.write("1")
            fw.flush()
            fw.close()
            fwb.write("1")
            fwb.flush()
            fwb.close()
            time.sleep(0.1)
        elif hardware == 'raspberrypi':
            print "Flashing from Raspberry Pi ..."
            import thread
            import RPi.GPIO as GPIO
            def trigger_reset():
                GPIO.setmode(GPIO.BCM)  # use chip pin number
                pinReset = 2
                GPIO.setup(pinReset, GPIO.OUT)
                GPIO.output(pinReset, GPIO.LOW)
                time.sleep(0.8)
                GPIO.output(pinReset, GPIO.HIGH)
                time.sleep(0.1)
            thread.start_new_thread(trigger_reset, ())
            # GPIO.setmode(GPIO.BCM)  # use chip pin number
            # pinReset = 2
            # # GPIO.setup(pinReset, GPIO.OUT)
            # GPIO.output(pinReset, GPIO.LOW)
            # time.sleep(0.5)
            # GPIO.output(pinReset, GPIO.HIGH)
            # time.sleep(0.1)

        print command
        return subprocess.call(command, shell=True)
        


src/l/a/LasaurApp-HEAD/backend/app.py   LasaurApp(Download)
from bottle import *
from serial_manager import SerialManager
from flash import flash_upload, reset_atmega
from build import build_firmware
from filereaders import read_svg, read_dxf, read_ngc
        for port in comport_list:
            print "Trying com port: " + port
            return_code = flash_upload(port, resources_dir(), firmware_file, HARDWARE)
            if return_code == 0:
                print "Success with com port: " + port
                SERIAL_PORT = port
                break
    else:
        return_code = flash_upload(SERIAL_PORT, resources_dir(), firmware_file, HARDWARE)
            print "Data root is: " + sys._MEIPASS             
    if args.flash:
        return_code = flash_upload(SERIAL_PORT, resources_dir(), FIRMWARE, HARDWARE)
        if return_code == 0:
            print "SUCCESS: Arduino appears to be flashed."
            print "SUCCESS: firmware built."
            # flash
            return_code = flash_upload(SERIAL_PORT, resources_dir(), FIRMWARE, HARDWARE)
            if return_code == 0:
                print "SUCCESS: Arduino appears to be flashed."