ST suppliers stm32l15x series touchkey source, the source I' ve used, there is a strong environmental self-calibration feature on this low-cost chips to play well, but to achieve the three timer pwm capture , and this is very cpu intensive.

32L-TOUCH-LIB\库包
.............\....\32l1-touch-lib.zip
.............\用户手册
.............\........\DM00075710.pdf
.............\规格
.............\....\DM00070202.pdf
32L-TOUCH-LIB

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