[CoolTerm-Betas] CooltermV1.9.0 - Auto-Reconnect

[Paul Newf]

Hi Roger,
Sounds good. Hope it works.
Happy to try things for you.
Paul

On Tue., Mar. 30, 2021, 16:06 Roger Meier, <roger.meier at pobox.com> wrote:

> Hi Paul,
>
> serial port error 22 means that the selected device is not currently
> enabled in the device manager. You’re correct in your assumption that in
> the case of your STM32 device, it might simply take too long for the serial
> port service is ready before CoolTerm tries to reopen. CoolTerm won’t try
> to re-connect until it sees the COM port again. Perhaps, in the case of
> your STM32 device, it takes some time after the port reappears before it’s
> actually ready. I will see if I can implement a delay between the time the
> port is rediscovered and the time CoolTerm attempts to reopen it.
>
> Roger
>
>
> On Mar 25, 2021, at 7:20 AM, Paul Newf <paul.newf at gmail.com> wrote:
>
> Just tried this but doesn't seem to be working reliably for me :(
> a) I'm using a VCP (Virtual Com Port emulated through USB pins on an
> STM32L496).
> b) It does work when used with an FTDI serial cable (USB to UART cable
> adds a UART by USB)
> c) I haven't tested the Com Port through the STLink 14pin UART connection
> yet (I'll have a PCB with that in about a week)
>
> What happens with VCP on STM32:
> - Coolterm *sometimes* gives a popup: [CoolTerm - Warning][A Serial Port
> Error Occurred] [22: Error 22]
> -- The popup seems to always occur when I reset the STM CPU (loose VCP
> emulation while USB code restarts)
> -- The popup sometimes occurs if I disconnect USB cable, wait, reconnect
> (possibly every second time it works)
> -- Possibly related to timing of how fast port reappears?
>
> These Coolterm settings didn't seem to affect it?
> [disabled] Options - Misc - Automatically connect on open* (also tried
> enabled)
> [enabled] Options - Misc - Automatically disconnect on close*  (Also Tried
> Disabled)
>   *I tried a few combinations of these but didn't seem to affect Auto
> Reconnect of my VCP device
>
> From CoolTerm Change Log: 1.9.0b1
> - Added code to detect sudden removal of serial devices. When a port is
> currently open, it will be closed when the device suddenly disappears.
> - Added code to detect re-appearance of serial devices. If a device has
> suddenly disappeared before while the port was open, CoolTerm will attempt
> to re-open the port. This is useful when attached microcontrollers are
> being rebooted.
>
> Paul
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>
>
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