I have a project which I thought it was finished last year. But lately, I discovered a problem with my CP2102 modules.
My project is a hardware communicating with an Android Tablet over the CP2102 USB to Uart module with 115k Baudrate. In the tablet we have our application running.
Everything was finished, my Android developer and I tried the project many times. The communication was ok .
But lately I found that the new CP2102 modules that I bought are not trancieving data after a start. Some modules are able to work fine , but some of them dont .
I thought the modules might be broken and then I tested them with my laptop and a small demo hardware over the Hyper terminal . With hyper terminal all the modules are able to work fine with my demo hardware with 115k Baud
Any guys have any idea where might be the problem ? what might be the difference between new and old CP2102 modules ?
When you refer to CP2102 modules, are you just talking about the bare chips, or are you buying these chips on our development kit boards? Can you describe your hardware setup in more detail?
thank you very much for your reply.
I am not talking about the bare chip . I am using the modules that I bought from the Chinese market . You can see them at the photo.
We are using a rooting programme for android , KingoRoot . I couldnt figure out if the problem is with the driver of the chips? or the Kingo root has been modified and its been calling the drivers it self.
only clue I got is the old modules are working but the new ones dont. But all of them can work with my computer+hardware . I tested all modules.
Oh , and sorry, on my hardware , I connected this modules TX to my microcontrollers RX, and modules RX to my mc's TX . And usb part is connected to tabled by a usb to micro usb cable.
Dear Peabody ,
Thank you my friend . I will have a look to that . Its something I never checked before . I hope it works that way . I will share the result here .