英文:
How to send data to two iio channels syncroniously?
问题
我正在使用FMCOMMS-3板上的AD9361来控制一些光学设置。为此，我需要将一个信号发送到第一个设备（x轴声光偏转器），将另一个信号发送到第二个设备（y轴声光偏转器）。至关重要的是，x 和 y 的信号需要同步发送。
我通过libiio操作芯片。我已经用所需的数据填充了对应于两个轴的缓冲区（有两个缓冲区对应于两个设备）。
理论上，现在我需要在两个缓冲区上调用iio_buffer_push()，但据我所知，这个函数是同步的 - 它只会在设备发送完所有数据后才返回。如何才能同时推送缓冲区到两个设备，以便传输的信号会同时发送？
英文:
I'm using AD9361 on FMCOMMS-3 board to control some optical setup. To do so I need to send one signal to the first device (x-axis acousto-optical deflector) and another signal to the second device (y-axis AOD). It is crucial, that the signals for x and y are synced (sent simultaneously).
I operate with the chip via libiio. I've filled the buffers corresponding to both axes with the desired data (there are 2 buffers corresponding to 2 devices).
In theory, now I have to call iio_buffer_push() on both buffers, but AFAIK this function is synchronous - it will return only after all the data is sent by the device. How can I push buffers to two devices, so that the transmitted signals will be sent simultaneously?
答案1
得分: 1
你可以使用 iio_buffer_set_blocking_mode() 将 iio_buffer 设置为非阻塞模式。这样，iio_buffer_push() 不会阻塞，会立即返回。例如，参见此文档。
例如：
iio_buffer_set_blocking_mode(somebuff, false); // 设置为非阻塞模式
iio_buffer_push(somebuff); // 立即返回
iio_buffer_push(otherbuff);
英文:
You can use iio_buffer_set_blocking_mode() to set an iio_buffer to non-blocking mode. That way, iio_buffer_push() will not block, and will return immediately. e.g. see this documentation.
e.g.
iio_buffer_set_blocking_mode(somebuff, false); // Set non-blocking mode
iio_buffer_push(somebuff); // Returns immediately
iio_buffer_push(otherbuff);
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