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Commit 62a6f361 authored by Felix Moser's avatar Felix Moser
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refactoring read_cpu_temp

parent aa2fcbb3
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......@@ -4,19 +4,21 @@
#include <fcntl.h>
#include <unistd.h>
void read_cpu_temp() {
void read_cpu_temp()
{
FILE *file;
char buffer[1024];
char *temp_path = "/sys/class/thermal/thermal_zone0/temp";
file = fopen(temp_path, "r");
if (file == NULL) {
if (file == NULL)
{
printf("Error opening file\n");
return;
}
if (fgets(buffer, sizeof(buffer), file) != NULL) {
if (fgets(buffer, sizeof(buffer), file) != NULL)
{
long temp = atol(buffer) / 1000;
char message[1024];
snprintf(message, sizeof(message), "%ld", temp);
......@@ -25,46 +27,55 @@ void read_cpu_temp() {
// write pipe
const char *pOne = "/tmp/pipeOne";
int vOne = open(pOne, O_WRONLY); // todo: | O_NONBLOCK
if (vOne == -1){
if (vOne == -1)
{
perror("Failed to open pipe one in read_cpu_temp");
return 1;
return;
}
write(vOne, message, sizeof(message));
close(vOne);
} else {
}
else
{
printf("Error reading file\n");
}
fclose(file);
}
void read_cpu_frequency() {
void read_cpu_frequency()
{
FILE *file;
char buffer[1024];
char *freq_path = "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq";
file = fopen(freq_path, "r");
if (file == NULL) {
if (file == NULL)
{
printf("Error opening file\n");
return;
}
if (fgets(buffer, sizeof(buffer), file) != NULL) {
if (fgets(buffer, sizeof(buffer), file) != NULL)
{
float freq = atol(buffer) / 1000000.0f;
printf("CPU frequency: %f GHz\n", freq);
} else {
}
else
{
printf("Error reading file\n");
}
fclose(file);
}
int main(void) {
int main(void)
{
// create and open pipes
const char *pOne = "/tmp/pipeOne";
mkfifo(pOne, 0666);
int vOne = open(pOne, O_RDONLY | O_NONBLOCK); // todo: | O_NONBLOCK
if (vOne == -1) {
if (vOne == -1)
{
perror("Failed to open pipe one in main");
return 1;
}
......
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