文件名称:HighResTimer
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* 一、功能: Timestamp驱动演示代码.
* 二、该源码需要硬件开发板的支持,因为ISS对Timestamp定时器的模拟还不够精确
* 如果将该源码运行于ISS模式下,将得不到精确的结果
* 三、运行前提:
* 1. 选择包含JTAG_UART和定时器的NiosII系统(ptf文件)
* 其中的定时器要求:
* (1) 具备可写的period寄存器
* (2) 具备可读的snapshot寄存器
* 2. 在系统库属性中完成下面的配置:
* (1) 将stdout映射到JTAG_UART
* (2) 将定时器映射为Timestamp时钟 -* 1, function: Timestamp-driven presentation code.* Second, the source needs the support of hardware development boards, because ISS on Timestamp timer analog also not precise enough* If the source code running on the ISS model, will not be* Third, accurate results, run the premise:* 1. JTAG_UART choose to include and NiosII system timer (ptf files)* one timer requirements:* (1) can be written in a period register* (2) have readable snapshot register* 2. in the system library properties to complete the following configuration:* (1) stdout is mapped to the JTAG_UART* (2) will be mapped to Timestamp timer clock
* 二、该源码需要硬件开发板的支持,因为ISS对Timestamp定时器的模拟还不够精确
* 如果将该源码运行于ISS模式下,将得不到精确的结果
* 三、运行前提:
* 1. 选择包含JTAG_UART和定时器的NiosII系统(ptf文件)
* 其中的定时器要求:
* (1) 具备可写的period寄存器
* (2) 具备可读的snapshot寄存器
* 2. 在系统库属性中完成下面的配置:
* (1) 将stdout映射到JTAG_UART
* (2) 将定时器映射为Timestamp时钟 -* 1, function: Timestamp-driven presentation code.* Second, the source needs the support of hardware development boards, because ISS on Timestamp timer analog also not precise enough* If the source code running on the ISS model, will not be* Third, accurate results, run the premise:* 1. JTAG_UART choose to include and NiosII system timer (ptf files)* one timer requirements:* (1) can be written in a period register* (2) have readable snapshot register* 2. in the system library properties to complete the following configuration:* (1) stdout is mapped to the JTAG_UART* (2) will be mapped to Timestamp timer clock
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HighResTimer.txt