Programmer窗口检测不到USB Blaster

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http://www.evernote.com/l/AE9UjixjZ85J5ZOkULnkdDtacZcX066YPo0/


关于《Programmer检测不到USB Blaster》的补充: 还有一种是带soc的开发板,会出现安装了驱动以后USB 设备还是无法识别,自然在Programmer里面也找不到端口了。

通过JTAG在Quartus II Programer内无法找到FPGA器件,执行JTAG Chain Debugger之后,Session Log提示如下:The TDI connection to the first detected device 5CSE(BA5|MA5)/.. might be shorted to VCC or is an open ciruit. The TCK and TMS connections to the device before the first detected device 5CSE(BA5|MA5)/.. might have a problem. 这类问题是客户的code supress 了 HPS boot,导致 HPS jtag 挂点。这个只要模式设置到00000就可以成功下载.sof文件。下载以后就可以恢复到10010模式了。 (对客户的建议是后期将project里面HPS to FPGA的设置去掉,以免再次挂点)

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