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#!/usr/bin/python
import serial
from optparse import OptionParser
import os, sys
def main():
usage="%prog: [options] filename"
parser = OptionParser(usage=usage)
parser.add_option("-t", "--tty", type="string", default="/dev/ttyUSB0",
help="select serial port [default=%default]")
parser.add_option("-b", "--baudrate", type=int, default=115200,
help="set baudrate [default=%default]")
(options, args) = parser.parse_args()
if len(args) != 1:
parser.print_help()
raise SystemExit(1)
filename = args[0]
f = open(filename, "r")
#all we have to do is load the IHX file and attempt to spit it out to the serial port.
if(os.path.exists(options.tty) is False):
sys.stderr.write("No serial port found at %s\n" % options.tty)
raise SystemExit(1)
try:
ser = serial.Serial(port=options.tty, timeout=1, baudrate=options.baudrate, bytesize=8, parity=serial.PARITY_NONE, stopbits=1, rtscts=0, xonxoff=0)
except serial.SerialException:
sys.stderr.write("Unable to open serial port\n")
raise SystemExit(1)
ser.open()
#test to see if a valid USRP2+ in RAM load mode is connected
ser.write("WOOOOO\n");
reply = ser.readline()
if("NOK" not in reply):
sys.stderr.write("Valid USRP2+ not connected or no response received\n")
raise SystemExit(1)
else:
print("USRP2+ found.")
for line in f:
ser.write(line.rstrip() + '\n')
reply = ser.readline()
if("NOK" in reply): #blocks to wait for response
print("Received NOK reply from USRP2+")
raise SystemExit(1)
elif("OK" not in reply):
print("Received invalid reply!")
raise SystemExit(1)
# else:
# print("OK received")
print "USRP2+ RAM programmed.\nLoading program."
#at this point it should have sent the end line of the file, which starts the program!
#we'll just act like a dumb terminal now
# ser.timeout = 0
# try:
# while 1:
# print ser.readline()
# except KeyboardInterrupt:
# raise SystemExit(0)
if __name__ == '__main__':
main()
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