Hi,
I try to read from system fs, but it don't work?
Please see the attachment and help me fix it.
Thanks in advance!
--
Trần Ngọc Quân.
component cpu_thermalusr "Read cpu thermal from sysfs";
pin out float value "Return value";
option userspace;
option singleton yes;
option extra_setup;
option extra_cleanup;
license "GPL";
;;
#define THERMALFILE "/sys/class/thermal/thermal_zone0/temp"
#define MAX_BUFFER 10
#define BASE 10
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
static int fd;
EXTRA_SETUP(){
fd = open(THERMALFILE, O_RDONLY);
}
void user_mainloop(void) {
char buff[MAX_BUFFER];
ssize_t sz;
while(1) {
usleep(1000);
sz = read(fd, buff, sizeof(char) * MAX_BUFFER);
buff[sz]= 0;
value = strtol(buff, NULL, BASE) / 1000.0;
}
}
EXTRA_CLEANUP(){
close(fd);
}
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