diff options
| -rwxr-xr-x | tools/pyboard.py | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/tools/pyboard.py b/tools/pyboard.py index 29af27f02..c0bb778a3 100755 --- a/tools/pyboard.py +++ b/tools/pyboard.py @@ -287,11 +287,15 @@ class Pyboard: for attempt in range(wait + 1): try: if os.name == "nt": - # Windows does not set DTR or RTS by default self.serial = serial.Serial(**serial_kwargs) - self.serial.dtr = True - self.serial.rts = False self.serial.port = device + portinfo = list(serial.tools.list_ports.grep(device)) # type: ignore + if portinfo and portinfo[0].manufacturer != "Microsoft": + # ESP8266/ESP32 boards use RTS/CTS for flashing and boot mode selection. + # DTR False: to avoid using the reset button will hang the MCU in bootloader mode + # RTS False: to prevent pulses on rts on serial.close() that would POWERON_RESET an ESPxx + self.serial.dtr = False # DTR False = gpio0 High = Normal boot + self.serial.rts = False # RTS False = EN High = MCU enabled self.serial.open() else: self.serial = serial.Serial(device, **serial_kwargs) |