I2C utility source code. KEIL C51 compiler to prepare.

1.利用PWM控制占空比实现LED的亮暗。 2.可以用UP DOWM键进行控制亮暗。 -1. The use of PWM duty cycle control to achieve the bright LED dark. 2. Can be used to control button UP DOWM bright dark.

Keil C51，带有EEPROM的读写和按键、菜单及数码管显示与一体的单片机程序，已通过调试-Keil C51, with the read and write EEPROM and buttons, menus and digital display with integrated single-chip process, has passed through debugging

用于单片机4*4键盘扫描，及数码管显示 -muc keybord and led display.

SD卡读写程序 1. sdconfig.h: 该文件为SD卡读写模块配置头文件，用户可根据实际硬件条件进行修改. 2. SD目录: SD卡读写模块的全部文件,一般不用修改. 3. 建议sdconfig.h文件不要放于SD目录中，因为SD目录中的文件一般无须修改, 而sdconfig.h通常会有改动.-1. Sdconfig.h: The document for the SD card reader module configuration header files, the user hardware according to actual conditions can be modified. 2. SD directory: SD card reader module of all the documents, the general need not be amended. 3. Proposed sdconfig. h files directory should not be put in SD because SD files in the directory are not normally required to be amended and the changes are usually sdconfig.h.

GCC的SD卡完整程序！可根据自己需要更改！-GCC complete the procedure of SD card! May need to change according to their own!

凌阳-24l01 驱动程序 无线2.4g 2m bit-2.4g 2m bit

本程序实现通过BDM方式访问MOTOROLA 9S12单片机EEPROM，可自动配置波特率，包含读、写、擦除三种功能。-This procedure, through BDM realize MOTOROLA 9S12 Singlechip access EEPROM, can automatically configure the baud rate, including reading, writing, erasing three functions.

430中149单片机使用的UART的特殊用法，测试通过-430code

lcd19264 用C51控制12864显示汉字 -C51 control lcd19264 with 12864 display Chinese characters

keil C51编写的的RFM01和RFM02应用程序，程序用于无线RS232通信，具有单片机间通信自检功能，对使用RFM芯片的朋友也许有帮助-keil C51 prepared RFM01 and the RFM02 application procedures for wireless RS232 communications, with a single-chip communication self-test function, on the use of RFM Friend chips might be helpful