int
main(int argc, char *argv[])
{
device_t dev;
int last_mhz = 0;
int i, j;
static char bar[21];
/* Boost current prioriy */
thread_setpri(thread_self(), 50);
if (device_open("cpufreq", 0, &dev))
panic("open error: cpufreq");
/* Clear screen */
printf("\33[2J");
printf("CPU voltage monitor\n");
device_ioctl(dev, CFIOC_GET_INFO, &cf_info);
if (cf_info.freq == 0 || cf_info.volts == 0)
panic("Invalid cpu power/speed");
/*
* Setup periodic timer for 10msec period
*/
timer_periodic(thread_self(), 100, 10);
for (;;) {
/*
* Wait next period
*/
timer_waitperiod();
device_ioctl(dev, CFIOC_GET_INFO, &cf_info);
if (cf_info.freq != last_mhz) {
printf("\33[s"); /* save cursor */
/*
* Display speed
*/
printf("\nSpeed: %4dMHz 0|", cf_info.freq);
j = cf_info.freq * 100 / cf_info.maxfreq;
for (i = 0; i < 20; i++)
bar[i] = (i <= j / 5) ? '*' : '-';
bar[i] = '\0';
printf("%s|100", bar);
/*
* Display power
*/
printf("\nPower: %4dmV 0|", cf_info.volts);
j = cf_info.volts * 100 / cf_info.maxvolts;
for (i = 0; i < 20; i++)
bar[i] = (i <= j / 5) ? '*' : '-';
bar[i] = '\0';
printf("%s|100", bar);
printf("\33[u"); /* restore cursor */
last_mhz = cf_info.freq;
}
}
return 0;
}
int
main(int argc, char *argv[])
{
device_t cpu_dev;
int last_mhz = 0;
int i, j;
static char bar[21];
/* Boost current prioriy */
thread_setprio(thread_self(), 50);
if (device_open("cpu", 0, &cpu_dev))
panic("open error: cpu");
/* Clear screen */
printf("\33[2J");
printf("CPU voltage monitor\n");
device_ioctl(cpu_dev, CPUIOC_GET_INFO, &cpu_info);
if (cpu_info.clock_ctrl == 0)
panic("DVS not supported by cpu");
if (cpu_info.speed == 0 || cpu_info.power == 0)
panic("Invalid cpu power/speed");
/*
* Setup periodic timer for 10msec period
*/
timer_periodic(thread_self(), 100, 10);
for (;;) {
/*
* Wait next period
*/
timer_waitperiod();
device_ioctl(cpu_dev, CPUIOC_GET_STAT, &cpu_stat);
if (cpu_stat.speed != last_mhz) {
printf("\33[s"); /* save cursor */
/*
* Display speed
*/
printf("\nSpeed: %4dMHz 0|", cpu_stat.speed);
j = cpu_stat.speed * 100 / cpu_info.speed;
for (i = 0; i < 20; i++)
bar[i] = (i <= j / 5) ? '*' : '-';
bar[i] = '\0';
printf(bar);
printf("|100");
/*
* Display power
*/
printf("\nPower: %4dmV 0|", cpu_stat.power);
j = cpu_stat.power * 100 / cpu_info.power;
for (i = 0; i < 20; i++)
bar[i] = (i <= j / 5) ? '*' : '-';
bar[i] = '\0';
printf(bar);
printf("|100");
printf("\33[u"); /* restore cursor */
last_mhz = cpu_stat.speed;
}
}
return 0;
}
