DMA introduction/fundamentals

这个是三星s3c2410普通下的DMA源码，看了就会使用这个芯片的dma-This is a Samsung S3C2410 common source of DMA read will use this chip, dma

S3C2440的中断处理部分，已调试通过，起码串口和网卡都已OK-S3C2440 part of the treatment interruption have been debug through, at least the serial and network card are OK

应用背景在网上看到了相应算法，用stm32 编程出来与大家分享，网上很少有这资源，可以用在stm32细分控制步进电机，在转速低时，噪声小，也更为精确，等同于步进电机驱动器关键技术SPWM算法，以及用stm32仿真三角波。说实话网上很少用stm32中央对齐方式仿真三角波的，但是在DSP上很是普遍，所以这也是我分享出来的原因之一。

意法公司ARM7芯片STR710的启动代码，用于再外部Flash里烧写针对710移植好的Ulinux的文件。-ARM7 chip company STMicroelectronics STR710 startup code for the re-programmer for external Flash-ri 710 transplant Ulinux good document.

S3C2440A中IIC接口的基本操作编程，实现向AT24C02内部地址0x00~0xff依次写入数据，然后再读出并比较。-S3C2440A in the basic operation of IIC interface programming, to achieve the AT24C02 internal address 0x00 ~ 0xff followed by write data, and then read out and compare.

东南大学开发ARM7芯片SD卡测试程序，完全可用-Southeast University to develop ARM7 chip SD card test procedure, fully available

飞利浦公司高速usb芯片isp1581用于扫描仪的源码-Philips high-speed chip isp1581 usb scanner for the FOSS

1.单机自发自收串行通信。接收键入字符，从8251A的发送端发送，与同一个8251A的接收端接收，然后在屏幕上显示出来。 2.双机串行通信，在一台PC机键入字符，从8251A的发送端发送给另一台PC机，另一台PC机的 8251A的接收端接收，然后在屏幕上显示出来。 -1. Since the resumption of spontaneous stand-alone serial communication. Type the characters receive from the sending end to send the 8251A, 8251A with the receiving end of a receiver, and then displayed on the screen. 2. Dual serial communication, in a PC-type characters, from the sending end 8251A sent to another PC, another PC-8251A to receive the receiving end, and then displayed on the screen.

LCD 1602 显示程序 包含初始化及相关应用函数 功能较为完备 -LCD 1602 display program contains functions to initialize and related applications function more complete

STM32 开发板例子:tamper. 开发环境:Keil For ARM-STM32 development board example: tamper. Development Environment: Keil For ARM