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+--- Thread: Problems opening bluetooth COM port (/showthread.php?tid=620)
Problems opening bluetooth COM port - xieliwei - 2013-07-06
I'm trying to use the bootloader with a JY-MCU bluetooth adapter:
http://wiki.pinguino.cc/index.php/Interfacing_with_Bluetooth_JY-MCU
Generally, it takes a few seconds for the serial port to open (when using Tera Term for example). I think the bootloader GUI times out during this and gives me a "Failed to open port COMx" error.
Is there a way to increase the timeout for a serial port to open?
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Turning on debug only displays this (yes, the bluetooth adapter works at 921600; the bootloader also works at 921600 over wired):
Opening port Standard Serial over Bluetooth link (COM7)@921600
Failed to open port COM7
RE: Problems opening bluetooth COM port - Mikael Gustavsson - 2013-07-07
Try to set a value in "Delay after port open" under the timing tab. The value should be longer than the time it takes to open the port.
RE: Problems opening bluetooth COM port - xieliwei - 2013-07-08
(2013-07-07, 22:07:44)Mikael Gustavsson Wrote: Try to set a value in "Delay after port open" under the timing tab. The value should be longer than the time it takes to open the port.
Just gave that a try. I've set it to 10000ms (which is more than sufficient), but the "Failed to open port" error appears just a few seconds in.
RE: Problems opening bluetooth COM port - Mikael Gustavsson - 2013-07-08
Try this new package:
http://mrmackey.no-ip.org/elektronik/ds30loader/forum/showthread.php?tid=508&pid=1321#pid1321
You will still need to use "Delay after port open"