def usb_open(devicename, is_update=False, mode_check=True):
def print_update_instructions(usb):
print("To perform an Update:")
if not usb.jumperless_update:
print(" - Disconnect from USB")
print(" - Install the Update Jumper at pins %s" %
("RXI-TXO" if usb.hw_model != 1 else "DCLK-GND"))
print(" - Reconnect to USB")
print(" - Run \"gw update\" to install firmware v%u.%u" %
(version.major, version.minor))
if devicename is None:
devicename = find_port()
usb = USB.Unit(serial.Serial(devicename))
usb.port_info = port_info(devicename)
is_win7 = (platform.system() == 'Windows' and platform.release() == '7')
usb.jumperless_update = ((usb.hw_model, usb.hw_submodel) != (1, 0)
and not is_win7)
if not mode_check:
return usb
if usb.update_mode and not is_update:
if usb.jumperless_update and not usb.update_jumpered:
usb = usb_reopen(usb, is_update)
if not usb.update_mode:
return usb
print("ERROR: Greaseweazle is in Firmware Update Mode")
print(" - The only available action is \"gw update\"")
if usb.update_jumpered:
print(" - For normal operation disconnect from USB and remove "
"the Update Jumper at pins %s" %
("RXI-TXO" if usb.hw_model != 1 else "DCLK-GND"))
else:
print(" - Main firmware is erased: You *must* perform an update!")
sys.exit(1)
if is_update and not usb.update_mode:
if usb.jumperless_update:
usb = usb_reopen(usb, is_update)
error.check(
usb.update_mode, """\
Greaseweazle F7 did not change to Firmware Update Mode as requested.
If the problem persists, install the Update Jumper at pins RXI-TXO.""")
return usb
print("ERROR: Greaseweazle is not in Firmware Update Mode")
print_update_instructions(usb)
sys.exit(1)
if not usb.update_mode and usb.update_needed:
print("ERROR: Greaseweazle firmware v%u.%u is unsupported" %
(usb.major, usb.minor))
print_update_instructions(usb)
sys.exit(1)
return usb
def usb_open(devicename, is_update=False, mode_check=True):
if devicename is None:
devicename = find_port()
usb = USB.Unit(serial.Serial(devicename))
usb.port_info = port_info(devicename)
if not mode_check:
return usb
print("** %s v%u.%u [F%u], Host Tools v%u.%u" %
(("Greaseweazle", "Bootloader")[usb.update_mode], usb.major,
usb.minor, usb.hw_model, version.major, version.minor))
if usb.update_mode and not is_update:
if usb.hw_model == 7 and not usb.update_jumpered:
usb = usb_reopen(usb, is_update)
if not usb.update_mode:
return usb
print("Greaseweazle is in Firmware Update Mode:")
print(" The only available action is \"update\" of main firmware")
if usb.update_jumpered:
print(" Remove the Update Jumper for normal operation")
else:
print(" Main firmware is erased: You *must* perform an update!")
sys.exit(1)
if is_update and not usb.update_mode:
if usb.hw_model == 7:
usb = usb_reopen(usb, is_update)
error.check(
usb.update_mode, """\
Greaseweazle F7 did not change to Firmware Update Mode as requested.
If the problem persists, install the Update Jumper (across RX/TX).""")
return usb
print("Greaseweazle is in Normal Mode:")
print(" To \"update\" you must install the Update Jumper")
sys.exit(1)
if not usb.update_mode and usb.update_needed:
print("Firmware is out of date: Require v%u.%u" %
(version.major, version.minor))
if usb.hw_model == 7:
print("Run \"update <update_file>\"")
else:
print("Install the Update Jumper and \"update <update_file>\"")
sys.exit(1)
return usb
def usb_open(devicename, is_update=False, mode_check=True):
if devicename is None:
devicename = find_port()
usb = USB.Unit(serial.Serial(devicename))
usb.port_info = port_info(devicename)
is_win7 = (platform.system() == 'Windows' and platform.release() == '7')
usb.jumperless_update = ((usb.hw_model, usb.hw_submodel) != (1, 0)
and not is_win7)
usb.can_mode_switch = (usb.jumperless_update
and not (usb.update_mode and usb.update_jumpered))
if mode_check:
usb = usb_mode_check(usb, is_update)
return usb
def usb_open(devicename, is_update=False):
if devicename == "auto":
devicename = find_port()
usb = USB.Unit(serial.Serial(devicename))
usb.port_info = port_info(devicename)
print("** %s v%u.%u [F%u], Host Tools v%u.%u" %
(("Greaseweazle", "Bootloader")[usb.update_mode], usb.major,
usb.minor, usb.hw_type, version.major, version.minor))
if usb.update_mode and not is_update:
if usb.hw_type == 7 and not usb.update_jumpered:
usb = usb_reopen(usb, is_update)
if not usb.update_mode:
return usb
print("Greaseweazle is in Firmware Update Mode:")
print(" The only available action is \"update <update_file>\"")
if usb.update_jumpered:
print(" Remove the Update Jumper for normal operation")
else:
print(" Main firmware is erased: You *must* perform an update!")
sys.exit(1)
if is_update and not usb.update_mode:
if usb.hw_type == 7:
return usb_reopen(usb, is_update)
print("Greaseweazle is in Normal Mode:")
print(" To \"update\" you must install the Update Jumper")
sys.exit(1)
if not usb.update_mode and usb.update_needed:
print("Firmware is out of date: Require v%u.%u" %
(version.major, version.minor))
if usb.hw_type == 7:
print("Run \"update <update_file>\"")
else:
print("Install the Update Jumper and \"update <update_file>\"")
sys.exit(1)
return usb
def usb_reopen(usb, is_update):
mode = {False: 1, True: 0}
try:
usb.switch_fw_mode(mode[is_update])
except (serial.SerialException, struct.error):
# Mac and Linux raise SerialException ("... returned no data")
# Win10 pyserial returns a short read which fails struct.unpack
pass
usb.ser.close()
for i in range(10):
time.sleep(0.5)
try:
devicename = find_port(usb.port_info)
new_ser = serial.Serial(devicename)
except serial.SerialException:
# Device not found
pass
else:
new_usb = USB.Unit(new_ser)
new_usb.port_info = port_info(devicename)
return new_usb
raise serial.SerialException('Could not reopen port after mode switch')
