Read Returned Error 72
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bluetooth asked 2014-09-10 02:28:17 -0500 EwingKang 36 ●1 ●3 ●6 updated 2015-03-22 21:08:27 -0500 Hi all! I'm working with arduino car under directly ROS topic command. I have linux error codes a arduino uno board with Arduino Sensor Shield v5.0 installed. I'm running the
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basic publish and subscribe tutorial from rosserial: http://wiki.ros.org/rosserial_arduino... http://wiki.ros.org/rosserial_arduino... When using USB shown as dev/ttyACM0, things are doing well. Then, sqlcode I'm trying to connect with HC-05 bluetooth module. First I connect it with command: sudo rfcomm connect /dev/rfcomm0 00:06:71:00:3E:87 1 And the Then launching rosserial as before with additional argument : rosrun rosserial_python serial_node.py _port:=/dev/rfcomm0 _baud:=9600 With the tutorial code on the car: #include
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Getting error number returned by recv function up vote -2 down vote favorite How can I get the error number or error string returned by the recv() in socket communication, recv() returns -1 as read size which means some error has occurred. I want to know the specific reason for the error. so how can I get that. c linux return-value errno strerror share|improve this question edited Jan 18 at 12:45 Sourav Ghosh 71.1k1174130 asked Jan 18 at 12:18 Asus gates 1286 3 Start by reading the recv manual page, especially the section about the return value. –Some programmer dude Jan 18 at 12:22 add a comment| 2 Answers 2 active oldest votes up vote 4 down vote accepted You need to include errno.h and use the errno global variable to check the last error code. Also, you can use strerror() to print a locale aware string explaining the error. Example #include