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Altera_Forum's avatar
Altera_Forum
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20 years ago

HELP!!

This is my program: # include <stdio.h># include <sys/types.h># include <fcntl.h> int main() { int p_button=NULL; unsigned int x=0; p_button=open("/dev/ttyS0",O_RDWR); if(p_...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

You can do a man on whatever function you have in question:

man read

Try it on LINUX or try it on google.

Results:

# include <unistd.h>

ssize_t read(int fd, void *buf, size_t count);

And a whole pile more of information about the read function.