我根据dMax,Mcasp,Configuring External Interrupts 手册配置的外部中断,三个外部中断,有一个1ms中断有时能进有时不行。使用的axr7,axr8,axr9做外部输入,中断9,11,12,1ms脉冲由fpga提供,接入axr8,使用中断11.我看了csl的外部中断例子程序,运行到我的板子上,经常跑飞,汇编单步运行就没事。感觉csl处理外部中断很麻烦,而且很多地方在Configuring External Interrupts 手册中并没有提到。
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