嵌入式系统，pda的原码，整个driver部分，arm7 cpu，可以学习arm上的driver 编成...

基于armSUMSUNG公司嵌入式处器的启动程序的原代码及相关说明理。-Based on Embedded armSUMSUNG Department

rtl8019在44B0上的代码，内有详细使用说明。-rtl8019 at 44B0 on the code, which has detailed instructions.

应用背景初学入门STM32系列单片机的源代码，对LCD显示及触摸屏的熟悉以及I2C读取EEPROM数据有些帮助。关键技术LCD驱动程序的熟悉了解，四线电阻屏的学习，STM32系列单片机入门，图像编码的原理

bios源码，基于s3c44b0杭州立宇泰的板子。包括测试、启动、引导部分，很详细的哦-bios source code, based on legislation s3c44b0 Hangzhou-Thailand plank. Including testing, launch and guide, very detailed oh

STM32是以Cortex-M3为核的处理器，该例程介绍STM32下如何对DMA进行操作。在许多情况下需要用到DMA，比如USB的批量传输等。-Cortex-M3 based STM32-core processor for the routine introduction STM32 how to operate on the DMA. In many cases the need to use DMA, such as USB bulk transfer.

实现了ez―usb的GPIF_FOFO读写功能-Ez-usb implementation of read and write functions of GPIF_FOFO

此源码是sc3c2410串口测试程序，经实际测试，可以正常运行．-This source is sc3c2410 serial test procedure, the actual test can be normal operation.

嵌入式处理器s3c2410的realboot源码程序bootloader功能和bios功能，用ads工程建立，大家可以直接学习。-embedded processor s3c2410 realboot source of functions and procedures Bootloader bios functions, with the establishment of ads works, we can learn.

如题原理图-diagram

优化级别必需为s,其他优化级别也不会导致编译时出错，但会导致运行时出错。原因涉及局部变量分配堆栈处理方式不同，也就是OS_CPU_A.c那个文件中的移植部分。还有就是其他优化涉及的中断自动保存寄存器的数量有所出入。-Necessary to optimize the level of s, other optimization levels will not lead to compile-time error, but it will result in run-time error. Reasons relating to the allocation of local variables, stack processing in different ways, that is, OS_CPU_A.c that the transplanted parts of the file. There are other optimization related to the interruption of the number of registers saved automatically have access to.