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求助求助，请问下beaglebone black如何采集遥控器接收器的数据，也就是PPM信号，类似PWM信号。想用BBBLACK做一个四轴飞行器的控制板，需要采集遥控器接收器的数据并发出PWM信号，请问该如何实现，求大神帮忙！
感觉可以用PRU实现，可以参考下：http://www.element14.com/community/community/designcenter/single-board-computers/next-gen_beaglebone/blog/2013/05/22/bbb--working-with-the-pru-icssprussv2
