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还是前面的帖子的代码,现在测试发现触发中断需要的高电平维持时间太长了。请老师给一些排查建议。 中断注册函数是:
ret = request_threaded_irq(fsfpgaindev.irq_num, irq_gpio_spi_handler,irq_gpio_spi_thread_func,IRQF_TRIGGER_RISING, "irq_gpio", &fsfpgaindev);
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