Debug and trace functions are integrated into the ARM Cortex-M4. Serial wire debug and trace functions are supported in addition to a standard JTAG debug and parallel trace functions. The ARM Cortex-M4 is configured to support up to eight breakpoints…

现代集成电路的制造工艺越来越先进,但是在生产过程中的制造缺陷也越来越难以控制,甚至一颗小小的PM2.5就可能导致芯片报废,为了能有效的检测出生产中出现的废片,需要用到扫描链测试(scan chain),由此产生了可测性设计即 DFT flow. DFT 第一步是做 scan chain,首先将电路中的普通 DFF 换成 scan DFF: scan DFF 是在原DFF 的输入端增加了一个 MUX,于是多了几个 pin :scan_in,scan_enable,scan_out 换完之后将所有的…

JTAG是JOINT TEST ACTION GROUP的简称,JTAG的两个标准IEEE 1149.1(2001)和IEEE 1149.7(2009). JTAG中主要包含两部分内容:TAP(TEST ACCESS PORT)和BOUNDARY-SCAN ARCHITECTURE. 边界扫描的基本思想是:在靠近芯片输入输出引脚处,增加一个移位寄存器单元,称为边界扫描寄存器(Boundary-Scan Register cell) 在芯片处在debug模式下时,这些边界扫描寄存器可以将芯片和外围…

2013-12-04 22:34:26 转自:http://processors.wiki.ti.com/index.php/Debugging_JTAG_Connectivity_Problems Contents [hide] 1 Strategy for debugging JTAG connectivity problems2 Check your hardware JTAG connection 1.1 If using Spectrum Digital emulators 1.2 I…

ADI:ARM Debug Interface,出到现在共有五代: 1)version1 and version 2:只针对ARM7TDMI和ARM9的processor: 2)version 3:只针对ARM10的processor family: 3)ADIv4:使用与所有的ARMv6 architecture: 4)ADIv5.2:针对ARMv7-A和ARMv8-A的processor:分为了Access Port(AP) architecture和Debug Port(DP) archi…

/** ****************************************************************************** * @author    Maoxiao Hu * @version   V1.0.0 * @date       Dec-2014 ****************************************************************************** * < COPYRIGHT 2014 IS…

原文出处: http://blog.csdn.net/embbnux/article/details/17619621 之前建立stm32开发环境,程序也已经编译好生成main.bin,接下来就是要把该文件烧录到stm32上.在linux下给arm烧录程序主要使用openocd,这个软件开源,而且支持众多芯片,从ARM9到A8都可以,当然STM32也可以.支持的JTAG工具也很多,JLINK ST-LINK OSBDM都可以,我这正好有一个openjtag基于FT2232C的,也是被支持的.  …

Correctly installing OpenOCD includes making your operating system give OpenOCD access to debug adapters. Once that has been done, Tcl commands are used to select which one is used, and to configure how it is used. Note: Because OpenOCD started out w…

Using an open debug interconnect model to simplify embedded systems design Tom Cunningham, Freescale Semiconductor AUGUST 29, 2007 Technology people are generally familiar with the Open Systems Interconnection model for computer networks and protocol…

本文转载自:http://www.linuxdiyf.com/linux/24086.html Ubuntu 16.04下EasyOpenJTAG+OpenOCD的安装和使用 发布时间:2016-09-12 09:09:31来源:linux网站作者:heyuqian_csdn 操作系统:VMware fusion + Ubuntu 16.04.1 LTS 开发板:JZ2440 V3 + EasyOpenJTAG   设备连接:   要烧写裸机程序离不开OpenJTAG,OpenJTAG包含了3大…