How can I send data to a different serial port when a callback event occurs on another serial port?

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David Dijemeni
David Dijemeni 2014-3-24
评论： Kevin Hajek 2015-9-2
I am trying to send data via USB serial port when an event occurs on another serial port.
I am getting the following warning:
Warning: The BytesAvailableFcn is being disabled. To enable the callback property either connect to the hardware with FOPEN or set the BytesAvailableFcn property.

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回答（1 个）

Walter Roberson
Walter Roberson 2014-3-24
s1 = serial('COM1', .....);
s2 = serial('COM7', .....);
set(s1, 'BytesAvailableFcn', @(src, evt) fwrite(s2, fread(s1, s1.BytesAvailable)) );
fopen(s2);
fopen(s1);
  2 个评论
David Dijemeni
David Dijemeni 2014-3-24
I tried
time = datestr(now,0); s1 = serial('COM1', .....); s2 = serial('COM7', .....); set(s1, 'BytesAvailableFcn', @(myfunction, time) fwrite(s2, fread(s1, s1.BytesAvailable)) ); fopen(s2); fopen(s1);
It didnt work. Please am I doing anything wromg?
Kevin Hajek
Kevin Hajek 2015-9-2
I'm seeing the same error message, but I am trying to use the serial object in the callback. If you happened to find a solution, please share it here. I'll keep looking around.

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