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State mechanism to achieve a long press, short pre
no vote
Application background Key.h and Key.c; source files to achieve a long press, short press, long press the cumulative recognition, the use of state mechanism to achieve key bucket and different key state identification, to maximize the operating efficiency of the program and the MCU utilization, the code portability, support IO drive button, AD sampling mode identification keys. Using DMA to obtain the AD sampling data, MCU using STM32.
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1
C language to achieve Printf () format output
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Application background source code to achieve printf () to format the output, support%x,%d, as well as the string output, code occupies a small space for MCU code space is relatively small, can be directly used to code debugging, change the code used by STM32 for MCU, if the other MCU as long as the configuration of the serial port module, and modify the macro definition is convenient, it is worth reference and use for reference.
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Infrared touch screen - supports touch four points
3.5
Application background The project is the market popular infrared touch screen, support for four point touch, contained within the infrared touch screen multi-point recognition algorithm, lamp control algorithm, USB-HID device development can used to study the USB-HID device class development, at the same time modified four point standard touch statements. The project used by the MCU for the market is popular mainstream MCU-STM32, it is worth learning and reference.
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