7 months, 1 week ago.
Windows 10 can't connect to lpc1768
I've recently bought a new pc and I ran into a problem.
I cannot connect to the serial port of my mbed lpc1768. I had to install the mbed drivers because otherwise no serial comport was shown in device manager. After installing the drivers, the comport shows up.
Now when I try to open a connection on that port, that terminal freezes and after 30 seconds or so, a timeout error is generated. During that time, I also cannot access the storage to upload. (uploading works fine as long as I don't try to connect to the serial port).
I can connect to my nucleo and arduino boards without any problems and the lpc1768 also gives no problems on my laptop.
I'm using an Asus crosshair VI extreme mobo.
Does anybody know a way to fix this?
7 months, 1 week ago.
Hi again Sander,
I would try updating the firmware on your LPC1768 and also uninstalling/re-installing the Mbed serial drivers on your computer. Here's some instructions on how to do that:
Please let me know how that goes!
- Jenny, team Mbed
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4 weeks, 1 day ago.
In case anyone else is having the same problem, I can confirm that trying different USB ports will probably fix it.
My motherboard is an Asus Prime X370 Pro with a Ryzen CPU. If I connect the LPC1768 to one of the USB ports on the back of the motherboard, the serial connection works fine.
If I connect it to one of the USB ports on the front of my machine - which are connected via a flying lead to the "USB1-2" dual row pin connector on the edge of the motherboard - the serial connection won't work. This is the case with both USB2 (black) and USB3 (blue) ports. The symptoms are the same as Sander reports: the terminal software (I'm using CoolTerm) locks up for about 30s and then reports an error.
Note that in both cases the LPC1768 appears as a disk drive and can be programmed by dropping files onto its File Explorer window as normal.
1/ File transfers work fine no matter which USB port I plug the LPC1768 into.
2/ Serial comms only work when the LPC1768 is plugged into a USB port on the back of the motherboard.
Running Windows 10 Home and all drivers updated.
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