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Application which includes both scope and touch screen

Can anybody give me some suggestions about touchscreen-operation oscilloscope based on Stellaris ARM Cortex-M3?

Recently, we follow qs-scope demo application of SW-EK-LM3S3748-8049, however this demo is operated by 5-way navigation switch not touchscreen. When we port this demo to our product which employs a LM3S2793 and a QVGA touchscreen, the scope and touch cannot work simultaneously.

The demo of below picture is a good start, but the full source named SW-RDK-IDM-8555  downloaded from TI.COM doesn’t include this demo. How can we get this demo.

(Scope Demo of  MDL-IDM28 Intelligent Display Module)

Thanks and Regards,

Zhidong.

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