本人新手,请教C6455如何开辟一个HPI的内存空间同外部DSP进行交互(数据的读写),如何交互?谢谢!
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c6455允许外部Host通过HPI口访问整个DSP memory包括internal memory和external memory. Host需要配置HPI寄存器, 并提供相应的HPI 读写时序就可以互相交互, HPI口的详细介绍见下面的文档, HPI读写时序在数据手册里第174页.
你可以到下面SDI公司的网站下载DSK6455/EVM6455 Target Content Package, 参考DSK6455\boards\dsk6455_v2\csl_c6455\example\hpi例子