Why doesn't it work?

2015 9 28
1 个回答
更新时间：2015 9 29
3 次查看（30 天）

0 个投票

Hi,
I'm trying to create a serial communication between two of my USB ports with two USB-serial adapter and a cross-over cable. I'm using the following code:
input = serial('COM3');
output = serial('COM4');
fwrite(input, 'hello');
fgets(output);
After fgets() this is what I get:
Warning: A timeout occurred before the Terminator was reached.
It seems like there is no stop bit after the characters and I don't know what to do with it. Please help me.
Thanks.

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回答（1 个）

Walter Roberson
Walter Roberson 2015-9-29

0 个投票

fwrite(input, sprintf('%s\n', 'hello'));
or
fprintf(input, '%s\n', 'hello');
or
fprintf(input, 'hello'); %special case, adds \n automatically

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