Hello,
Im working with bridge library and I have a problem because the comunication is slow between arduino and linino and I need communication in real time. Its any alternative?
Actually, I am execute in yún a C program that execute “curl http:/…”.
Regards.
If you are a hardcore C programmer, have a look at this: http://forum.arduino.cc/index.php?topic=297265.0
flyonthewind:
Im working with bridge library and I have a problem because the comunication is slow between arduino and linino and I need communication in real time. Its any alternative?
@flyonthewind,
this is a common request, there are a lot of “work arounds”. Can you explain your need a bit more?
TIA
Jesse
Of course!
I have a C program in Linino for send orders to Arduino. If order is a ultrasound sensor its no problem, but if the sesor is a motors delay its problematic. I have a delay around 0,5"-1".
flyonthewind:
Of course!I have a C program in Linino for send orders to Arduino. If order is a ultrasound sensor its no problem, but if the sesor is a motors delay its problematic. I have a delay around 0,5"-1".
Okay, not very common problem. But has solution.
Do you understand the word deterministic?
Jesse
Hi,
Yes, I know. But Its not possible. I send remote orders to Linino and it must send the values of pins to ATmega.
Libcurl (http://curl.haxx.se/) is possible to use in linino in a C code program?
Regards.
flyonthewind: Hi,
Yes, I know. But Its not possible. I send remote orders to Linino and it must send the values of pins to ATmega.
Libcurl (http://curl.haxx.se/) is possible to use in linino in a C code program?
Regards.
@flyonthewind,
to send values to pins you must use ATmega. If your client is remote then you must go through Linux.
Yes, you have available:
Sorry no LUA library for CURL available.
For other languages see answer by sonnyyu http://forum.arduino.cc/index.php?topic=297259.0
To put library on Linux, SSH into Yun
opkg update
opkg libcurl
Jesse
Hello, thanks!
How to send values to pins through Linux?
I have libcurl installed by opkg, but gcc can not find the file, I use #include
jessemonroy650: Linux is NOT deterministic.
I guess/hope that you wanted to write: "Linux is not an RTOS (Real Time Operating System)", because being non deterministic is scary and not reliable ;-)
kind regards,
Jos
flyonthewind: Hello, thanks!
How to send values to pins through Linux?
I have libcurl installed by opkg, but gcc can not find the file, I use #include
also #include and doesn't found "fatal error: curl/curl.h: No such file or directory"
google: gcc flags
3.1 Option Summary https://gcc.gnu.org/onlinedocs/gcc/Option-Summary.html
The flag you need is -include
One way to send command to pin. http://arduino.cc/en/Tutorial/MailboxReadMessage
Jesse
Hello,
Mailbox is similar to yunserver-client no?
I compile OK, and I receive error "fatal error: curl/curl.h: No such file or directory"
gcc -o program file.cpp file2.cpp -lstdc++ -lcurl
I think that Libcurl-dev not in Linino
Thanks!
flyonthewind:
1) Mailbox is similar to yunserver-client no?
2) I compile OK, and I receive error "fatal error: curl/curl.h: No such file or directory"
gcc -o program file.cpp file2.cpp -lstdc++ -lcurl
3) I think that Libcurl-dev not in Linino
gcc -o program file.cpp file2.cpp -lstdc++ -lcurl [b]-include /{path to}/curl/curl.h[/b]
Jesse
I try to compile with:
gcc -o program file.cpp file2.cpp -lstdc++ -lcurl -include /{path to}/curl/curl.h
but I don't kwow whati is "path to" directory. I have installed libcurl and the files are here:
opkg files libcurl Package libcurl (7.29.0-1) is installed on root and has the following files: /usr/lib/libcurl.so.4 /usr/lib/libcurl.so.4.3.0
I have try to execute this command: gcc -o program parsereq.cpp -lstdc++ -lcurl -include /usr/lib/libcurl.so.4
But the error is the same: "fatal error: curl/curl.h: No such file or directory"
Where is my fault?
Thanks