def flash_target(self):
# create new instance of TI-TXT class
ti_txt = TiTxtParser(self.verbose_mode)
# parse the TI-TXT
content = ti_txt.parse(self.file_name)
if(content == {}):
if(self.verbose_mode == True):
print "Failed to parse TI-TXT file:", self.file_name
return False
#ti_txt.debug_print_content()
# try to fill the data
full_content = ti_txt.fill(content, self.start_addr, 0xFFFF, 0xFF)
if(full_content == {}):
if(self.verbose_mode == True):
print "Failed to fill TI-TXT file"
return False
#ti_txt.debug_print_full_content(full_content)
if(self.verbose_mode == True):
print "\n== Flashing Target Device =="
# try to open the serial-port
try:
if(self.verbose_mode == True):
print "Opening Serial Port:", self.serial_port
ser = serial.Serial(self.serial_port, timeout=8)
except:
if(self.verbose_mode == True):
print "Failed to open serial port"
return False
# flush input output
ser.flushInput()
ser.flushOutput()
# send CMD_SYNC byte
if(self.verbose_mode == True):
print "Sending SYNC byte (", hex(CMD_SYNC),")"
ser.write(('' + chr(CMD_SYNC)))
time.sleep(SLEEP_1MS * 100) # device needs time to rewrite int.vector
# send the data bytes and calculate checksum while sending
if(self.verbose_mode == True):
data_len = len(range(self.start_addr, 0xFFFE))
print "Sending binary data - length:", data_len, "(",
print hex(data_len), ") bytes"
chksum = 0
for addr in range(self.start_addr, 0xFFFE):
byte = full_content[self.start_addr][addr-self.start_addr]
ser.write(('' + chr(byte)))
time.sleep(SLEEP_1MS * 5) # sleep 5 ms between sending bytes
chksum ^= byte
# send checksum
if(self.verbose_mode == True):
print "Sending checksum byte (", hex(chksum),")"
ser.write(('' + chr(chksum)))
time.sleep(SLEEP_1MS * 5) # sleep 5 ms between sending bytes
# wait for reply
if(self.verbose_mode == True):
print "Reading reply from target"
byte = ser.read()
ser.close()
if(byte == chr(ACK)):
if(self.verbose_mode == True):
print "received ACK - SUCCESS"
return True
else:
if(self.verbose_mode == True):
print "received NACK - ERROR"
return False
