stm32 1602自己写的驱动 并且加入了矩阵键盘 线反转法的 很清晰详细 有debug模式 systick精确延时 文件清晰 请大家玩玩哈哈 -stm32 1602 and joined the drive to write their own keyboard line matrix inversion method is very clear and detailed with precision delay file debug mode systick clear please pl