diff options
Diffstat (limited to 'serial/tools/list_ports_windows.py')
| -rw-r--r-- | serial/tools/list_ports_windows.py | 57 |
1 files changed, 45 insertions, 12 deletions
diff --git a/serial/tools/list_ports_windows.py b/serial/tools/list_ports_windows.py index f4ec8bd..50bc81d 100644 --- a/serial/tools/list_ports_windows.py +++ b/serial/tools/list_ports_windows.py @@ -143,17 +143,24 @@ REG_SZ = 1 # workaround for compatibility between Python 2.x and 3.x
Ports = serial.to_bytes([80, 111, 114, 116, 115]) # "Ports"
PortName = serial.to_bytes([80, 111, 114, 116, 78, 97, 109, 101]) # "PortName"
-NA = serial.to_bytes([110, 47, 97]) # "n/a"
def comports():
- GUIDs = (GUID*8)()
+ GUIDs = (GUID*8)() # so far only seen one used, so hope 8 are enough...
guids_size = DWORD()
- if not SetupDiClassGuidsFromName(Ports, GUIDs, ctypes.sizeof(GUIDs), ctypes.byref(guids_size)):
+ if not SetupDiClassGuidsFromName(
+ Ports,
+ GUIDs,
+ ctypes.sizeof(GUIDs),
+ ctypes.byref(guids_size)):
raise ctypes.WinError()
+ # repeat for all possible GUIDs
for index in range(guids_size.value):
- #~ g_hdi = SetupDiGetClassDevs(ctypes.byref(guid), None, NULL, DIGCF_PRESENT|DIGCF_DEVICEINTERFACE)
- g_hdi = SetupDiGetClassDevs(ctypes.byref(GUIDs[index]), None, NULL, DIGCF_PRESENT)
+ g_hdi = SetupDiGetClassDevs(
+ ctypes.byref(GUIDs[index]),
+ None,
+ NULL,
+ DIGCF_PRESENT) # was DIGCF_PRESENT|DIGCF_DEVICEINTERFACE which misses CDC ports
devinfo = SP_DEVINFO_DATA()
devinfo.cbSize = ctypes.sizeof(devinfo)
@@ -162,13 +169,24 @@ def comports(): index += 1
# get the real com port name
- hkey = SetupDiOpenDevRegKey(g_hdi, ctypes.byref(devinfo), DICS_FLAG_GLOBAL, 0, DIREG_DEV, KEY_READ)
- #~ hkey = SetupDiOpenDevRegKey(g_hdi, ctypes.byref(devinfo), DICS_FLAG_GLOBAL, 0, DIREG_DRV, KEY_READ)
+ hkey = SetupDiOpenDevRegKey(
+ g_hdi,
+ ctypes.byref(devinfo),
+ DICS_FLAG_GLOBAL,
+ 0,
+ DIREG_DEV, # DIREG_DRV for SW info
+ KEY_READ)
port_name_buffer = byte_buffer(250)
port_name_length = ULONG(ctypes.sizeof(port_name_buffer))
- RegQueryValueEx(hkey, PortName, None, None, ctypes.byref(port_name_buffer), ctypes.byref(port_name_length))
+ RegQueryValueEx(
+ hkey,
+ PortName,
+ None,
+ None,
+ ctypes.byref(port_name_buffer),
+ ctypes.byref(port_name_length))
RegCloseKey(hkey)
-
+
# unfortunately does this method also include parallel ports.
# we could check for names starting with COM or just exclude LPT
# and hope that other "unknown" names are serial ports...
@@ -177,24 +195,39 @@ def comports(): # hardware ID
szHardwareID = byte_buffer(250)
- if not SetupDiGetDeviceRegistryProperty(g_hdi, ctypes.byref(devinfo), SPDRP_HARDWAREID, None, ctypes.byref(szHardwareID), ctypes.sizeof(szHardwareID) - 1, None):
+ if not SetupDiGetDeviceRegistryProperty(
+ g_hdi,
+ ctypes.byref(devinfo),
+ SPDRP_HARDWAREID,
+ None,
+ ctypes.byref(szHardwareID),
+ ctypes.sizeof(szHardwareID) - 1,
+ None):
# Ignore ERROR_INSUFFICIENT_BUFFER
if ctypes.GetLastError() != ERROR_INSUFFICIENT_BUFFER:
raise ctypes.WinError()
# friendly name
szFriendlyName = byte_buffer(250)
- if not SetupDiGetDeviceRegistryProperty(g_hdi, ctypes.byref(devinfo), SPDRP_FRIENDLYNAME, None, ctypes.byref(szFriendlyName), ctypes.sizeof(szFriendlyName) - 1, None):
+ if not SetupDiGetDeviceRegistryProperty(
+ g_hdi,
+ ctypes.byref(devinfo),
+ SPDRP_FRIENDLYNAME,
+ None,
+ ctypes.byref(szFriendlyName),
+ ctypes.sizeof(szFriendlyName) - 1,
+ None):
# Ignore ERROR_INSUFFICIENT_BUFFER
#~ if ctypes.GetLastError() != ERROR_INSUFFICIENT_BUFFER:
#~ raise IOError("failed to get details for %s (%s)" % (devinfo, szHardwareID.value))
# ignore errors and still include the port in the list, friendly name will be same as port name
- yield string(port_name_buffer), NA, string(szHardwareID)
+ yield string(port_name_buffer), 'n/a', string(szHardwareID)
else:
yield string(port_name_buffer), string(szFriendlyName), string(szHardwareID)
SetupDiDestroyDeviceInfoList(g_hdi)
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# test
if __name__ == '__main__':
import serial
|