利索-全球专利检索

  1. 登录
  2. 注册
发明授权
CN106201802B 基于逻辑分析仪的CPU内部中断响应时间和恢复时间的测量方法 有权

基于逻辑分析仪的CPU内部中断响应时间和恢复时间的测量方法
摘要：
本发明涉及一种基于逻辑分析仪的CPU内部中断响应时间和恢复时间的测量方法，其包括如下步骤：S1、CPU通过GPIO1口、GPIO2口分别与逻辑分析仪匹配连接；步骤S2、在软件可触发中断触发前，翻转GPIO1口的电平；步骤S3、触发所选定的软件可触发中断，并连续N次翻转GPIO1口的电平信号；步骤S4、在上述软件可触发中断恢复后且GPIO1电平变化后，逻辑分析仪停止对GPIO1口、GPIO2口对应电平信号的采集，并对记录GPIO1口、GPIO2口对应的电平信号进行分析，以确定中断响应时间T1以及恢复时间T2。本发明操作方便，能实现对CPU内部中断响应时间以及恢复时间的精确测量，避免系统运行时间和时序分析的偏差。
摘要（英）：

The invention relates to a method for measuring the internal interrupt response time and restoration time of a CPU based on a logic analyzer. The method includes the following steps that S1, the CPU is in matched connection with the logic analyzer respectively through a GPIO1 port and a GPIO2 port; S2, before a software triggerable interrupt is triggered, the level of the GPIO1 port is overturned; S3, the selected software triggerable interrupt is triggered, and level signals of the GPIO1 port is continuously overturned for N times; S4, after the software triggerable interrupt is restored and the GPIO1 level changes, the logic analyzer stops acquisition of the level signals corresponding to the GPIO1 port and the GPIO2 port, and the recorded level signals corresponding to the GPIO1 port and the GPIO2 port are analyzed to determine the internal interrupt response time T1 and the restoration time T2. The method is convenient to operate, can achieve accurate measurement of the internal interrupt response time and the restoration time of the CPU and avoids deviations of operating time and timing sequence analysis and a system.

公开/授权文献
0/0