raspberrypi-tm1637-4display's Introduction

raspberrypi tm1637 4-digit display

TM1637 4-digit display demo

raspberry pi 3b+

Node.js 8+

说明

本demo使用的模式为 0b01000000, 即普通的自动地址增加的写数据到显示寄存器, 具体参照芯片规格书-TM1637

时钟上升沿读取数据
时钟高电位时, 数据口下降沿表示数据传输开始, 上升沿表示数据传输结束
除开始结束命令外, 其余数据传输均为9个上升沿, 前8个表示8个传输的字节, 8号下降沿后数据接口会产生一个ack反馈, 低电平表示传输成功

流程

开始 -> 设置传输模式 -> 结束
开始 -> 设置数字起始显示地址 -> 设置一个数字 -> 设置一个数字 -> ... -> 结束
开始 -> 设置显示控制 -> 结束

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