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STM32TS60 PMatrix area detection

Question asked by ANN on May 20, 2014
Latest reply on May 21, 2014 by ANN
Hello all,
I am interested in PMatrix area detection (PMAD) of  STM32TS60.
I would like to know how PMAD works to obtain the touched areas. 
The exact way how it works is not explained in the reference manual.
Is the underlying technique/algorithm is accessible?
If so where can I access it?