Flashmagic need restart

[suhelshaikh21]

Hello Everyone,
I am having p89v51rd2,
I am connecting it with my laptop using usb to serial cable & DB9 connector.
its work good first time only with boud rate9600.
but after that second time if i connect it was give me error unable to connect try to reduce baudrate, with same setting
if i restart my laptop & then i connect now it load programe again(i.e i require restart of my laptop every time when i using flshmagic)
how to solve this issue

[Andy Ayre]

Please try a USB to RS232 cable from a different manufacturer and see what happens. My first guess is that it is a driver issue.

Andy

[suhelshaikh21]

I am changing usb to rs232 cable.
but result are same.
if i change pc then no need to restart

[Andy Ayre]

It must be something specific to your windows installation. There is nothing in Flash Magic that requires a reboot to continue using it and we don't have anyone else with any similar kind of issue.

I suggest to look at the low-level comms using PortMon then check to see what is different the first time (working) and the second time (fails).

Andy