串口扩展,又一个UART扩张成为五个,GM8125驱动程序

学习用，使用前，认真阅读，按实际情况更改IO口！-to study, use, read carefully, according to the actual situation changes IO mouth!

TI的CAN接口芯片sn65hvd251的说明。-TI s CAN interface chip sn65hvd251 instructions.

本程序用于键盘的识别，通过编程，使按下K1键时第一个数码管显示1，按下K2键时第一 //个数码管上显示2，按下K3键时第一个数码管上显示3，按下K4键时第一个数码管上显示4， //对键盘的扫描采用查询方式

凌阳61板锯齿波发生程序，可以在产生示波器上产生锯齿波-Sunplus 61 sawtooth board programmed, you can have a sawtooth generated Oscilloscopes

飞利浦RC522芯片源代码。该芯片主要针对三表市场和手持设备，支持I2C/SPI/UART接口。 先发布基于普通51单片机的驱动源代码，采用串口接口，无需中断。只要接一个串口，后续会发布基于飞利浦LPC9401的读写源代码！LPC9401也是基于51核，只需连接SPI接口！有公司拿这个源代码卖钱哟-Philips RC522 chip source. The chip targeted at three tables and handheld devices market, support I2C/SPI/UART interface. Based on the first general release 51 MCU-driven source code, using serial interface, without interruption. As long as a serial port access, the follow-up will be issued based on the Philips LPC9401 write source code! LPC9401 is based on the 51 nuclear, only connecting SPI interface! A company with the source code acquisition yo! !

单片机加无线模块NRF24l01实现其双向通信功能

此为按键部分的,读取按键值是否有按键判断部分函数-this as part of the button, reading keys value judgment whether some function keys

自己在keil51中用C实现了一个电子钢琴展览项目，cpu用P89V51RD2，完全自己写的代码-Keil51 with C in the realization of an electronic piano exhibitions, cpu use P89V51RD2, completely write their own code. .

本代码实现了两块无线收发模块prt8000（核心芯片nrf905）的通信功能-This code has two wireless transceiver module prt8000 (core chip nrf905) of the communication function

此源码基于MAX1898实现智能充电器，可以借鉴-MAX1898 Intelligent Charger, we can draw on