Sunplus Single-chip 4* 4 keyboard to expand the source code and the principle of the circuit (PDF format), including the keyboard scan initialization, keyboard scanning service function, as well as the keyboard防抖动process.

Packet : 297821944×4keyboard.rar filelist
4×4keyboard\4×4键盘模块.pdf
4×4keyboard\Key16\Device.env
4×4keyboard\Key16\hardware.asm
4×4keyboard\Key16\hardware.h
4×4keyboard\Key16\hardware.inc
4×4keyboard\Key16\irq.asm
4×4keyboard\Key16\irq.inc
4×4keyboard\Key16\key.asm
4×4keyboard\Key16\Key16.env
4×4keyboard\Key16\Key16.h
4×4keyboard\Key16\Key16.lik
4×4keyboard\Key16\Key16.opt
4×4keyboard\Key16\Key16.rc
4×4keyboard\Key16\Key16.set
4×4keyboard\Key16\Key16.spj
4×4keyboard\Key16\main.c
4×4keyboard\Key16\Makefile
4×4keyboard\Key16\Resource.asm
4×4keyboard\Key16\Resource.inc
4×4keyboard\Key16
4×4keyboard

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