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am335x edma外部触发的实现



本人正在做fpga和arm通信,现在用到了fpga发送一个触发信号给arm的XDMA_EVENT_INTR1管脚,想要利用edma外部触发进行数据传输,有没有哪位有过相关的研究的人交流下,关键是在linux驱动中怎样实现edma外部触发的程序,请留下QQ交流下,谢谢啦!