Few days ago I was just trying to familiarize an 89C430 microcontroller. I am using SDCC in linux. Then I feel the process of hex loading (ISP) a bit difficult since I need to type the commands and send the hex file using a terminal emulator. Then I wrote a small python script (pyserial based) for the purpose. It requires the file name of the hex as command line argument and the remaining the script will do...
PHP:
import serial,time,sys,os
os.system("clear")
if not sys.argv[1:]:
print "hex file not specified in command line argument\n\n"
print "usage:\npython romloader.py filename.ihx\n\n"
print "example:\n python romloader.py ledblink.ihx\n\n"
sys.exit(0)
ser = serial.Serial("/dev/ttyUSB0",57600)
ser.timeout = 0.3
try:
ser.open()
ser.setDTR(1)
except Exception,e:
print "error open serial port: " + str(e)
exit()
if ser.isOpen():
try:
ser.flushInput()
ser.flushOutput()
ser.write("\x0D")
time.sleep(0.1)
recbuffer = ser.read(80)
list = recbuffer.split(" ")
if 'LOADER' in recbuffer:
print "CONNECTED TO LOADER SUCCESSFULLY"
print recbuffer
else:
print "CONNECTION ERROR"
ser.setDTR(0)
ser.close()
sys.exit(0)
ser.write("K\x0D")
time.sleep(0.1)
ser.write("L\x0D")
f=open(sys.argv[1],"rU")
hexcontent = f.read()
f.close()
ser.write(hexcontent+"\x0D")
k = ser.read(200)
print k
ser.setDTR(0)
ser.close()
except Exception, e1:
print "error communicating...: " + str(e1)
else:
print "cannot open serial port "
