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CC3000 and EK-LM4F232: UART problem

Prodigy 50 points

Replies: 3

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Hi,

I am following the guide on http://processors.wiki.ti.com/index.php/CC3000_Basic_Wi-Fi_example_application_for_Stellaris to get CC3000 working with my EK-LM4F232 board.

I managed to successfully build the basic wifi-application within CCSv5. Download and running it via the debug and start button also no problem - however: I already get stuck with receiving the welcome string - I do not receive anything.

I am sure that the hardware UART set-up and configuration is correct, as testing the Hello World-example that comes with TivaWare successfully prints "Hello World" to TeraTerm.

I have compared the UART configuration between the Hello World-example and the basic wifi application, which is nearly identical (baud 115200, 8 data bits, no parity, one stop bit), only difference is that Hello World-example explicitly uses PIOSC with 16 MHz.

So as the UART configuration between those two applications are basically the same, however in the one case it works in the other it does not, I am a bit clueless as to where the mistake might be.

I searched for related topics in this support forum, and UART problem between CC3000 and Stellaris is not a uncommon issue. Some thread-owners claim to have solved the serial communication issue, however unfortunately no helpful information were provided.

Hope someone here can help.

Many thanks,

Jimmy

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