stm32F103库文件，CAN，C语言描述-stm32F103 library files, CAN, C language descr iption

ADC examples 3 & 4 updated DEBUG example Example modified to support RIDE specific printf function implementation I2C example5 i2c_ee.c: add the following function prototypes: "void GPIO_Configuration(void)" add "void I2C_C

使用SL811+8051平台实现的USB HOST测试仪器，可以测试各种USB 设备的，支持最多2级HUB，带LCD显示屏，已经被大量生成使用；使用C语言开发，方便移植到 主流STM32F 平台。(USB HOST testing instrument using SL811+8051 platform can test all kinds of USB devices, support up to 2 HUB and LCD display, and have been used in lar