Discussion

LeMaker Guitar running LeMedia-The Family Multimedia Center

23 3784
tkaiser  
Edited by tkaiser at Fri Aug 21, 2015 04:33
tony_zhang replied at Fri Aug 21, 2015 02:38
The 4K can not be support is because the GPU userspace now in Linux can not support 4K, only suppo ...

Ok, I think this is still ok for applications like digital signage and something like that.

Maybe some of the reviewers consider testing stuff like consumption and heat in different situations (would be the very first thing I do when I test a new device: Using a powermeter and check the consumption when idle, when under full CPU load and when busy doing GPU stuff: in this case playing a 1080p video should be sufficient).

Still wonder whether the SoC has an internal temperature sensor which is exposed via sysfs and can be read out easily.

hnsncxy  
Edited by hnsncxy at Thu Oct 8, 2015 03:34
tkaiser replied at Fri Aug 21, 2015 04:27
Ok, I think this is still ok for applications like digital signage and something like that.

Maybe  ...
Still wonder whether the SoC has an internal temperature sensor which is exposed via sysfs and can be read out easily.

Hi,Thomas
We have writen the tutorial about viewing the temperature of the CPU, please visit the wiki at http://wiki.lemaker.org/How_to_read_the_CPU_temperature



tkaiser  
Edited by tkaiser at Thu Oct 8, 2015 04:02
hnsncxy replied at Thu Oct 8, 2015 03:32
Hi,Thomas
We have writen the tutorial about viewing the temperature of the CPU, please visit the w ...

Since you sent me a Guitar I was able to find that out within minutes: One of the first steps I took was:
  1. root@Lemuntu:~# find /sys -name "*temp*" | while read ; do echo "${REPLY}: $(cat ${REPLY})"; done
  2. /sys/devices/b0170000.i2c/i2c-0/0-0065/atc2603c-hwmon.0/ic_temperature: 49822 mCel
  3. /sys/devices/b0170000.i2c/i2c-0/0-0065/atc2603c-power.0/power_supply/battery/temp: 0
  4. /sys/devices/virtual/hwmon/hwmon1/temp1_input: 0
  5. /sys/devices/virtual/hwmon/hwmon2/temp1_crit: 60000
  6. /sys/devices/virtual/hwmon/hwmon2/temp1_input: 56000
  7. /sys/devices/virtual/thermal/thermal_zone0/temp: 0
  8. cat: /sys/devices/virtual/thermal/thermal_zone0/emul_temp: Permission denied
  9. /sys/devices/virtual/thermal/thermal_zone0/emul_temp:
  10. /sys/devices/virtual/thermal/thermal_zone1/temp: 55000
  11. cat: /sys/devices/virtual/thermal/thermal_zone1/emul_temp: Permission denied
  12. /sys/devices/virtual/thermal/thermal_zone1/emul_temp:
  13. /sys/devices/virtual/thermal/thermal_zone1/trip_point_0_temp: 60000
  14. /sys/devices/virtual/thermal/thermal_zone1/trip_point_1_temp: 70000
  15. /sys/devices/virtual/thermal/thermal_zone1/trip_point_2_temp: 80000
Copy the Code

No need for lm-sensors, the temperatures are available through sysfs. Also nice that you can adjust trip_point_n_temp through sysfs easily. Not so nice that the kernel you deliver currently does not support thermal throttling. So defining these values is useless.

While doing tests I already monitor relevant parameters:
  1. cd /sys/devices/b0170000.i2c/i2c-0/0-0065/atc2603c-hwmon.0 && while true ; do echo "$(cat wall_current) $(cat wall_voltage) $(awk '{printf ("%0.0f",$1/1000); }' </sys/devices/virtual/thermal/thermal_zone1/temp)°C $(awk '{printf ("%0.1f",$1/1000); }' </sys/devices/b0170000.i2c/i2c-0/0-0065/atc2603c-hwmon.0/ic_temperature) $(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq)" ; sleep 1; done
  2. 210 mA 4211 mV 71°C 58.8 1104000
  3. 208 mA 4204 mV 71°C 59.0 1104000
  4. 188 mA 4204 mV 69°C 58.8 1104000
  5. 184 mA 4233 mV 71°C 59.6 1104000
  6. 197 mA 4226 mV 72°C 59.6 1104000
  7. 172 mA 4218 mV 72°C 60.3 1104000
  8. 174 mA 4226 mV 71°C 61.5 1104000
  9. 136 mA 4248 mV 70°C 61.1 1104000
  10. 145 mA 4240 mV 69°C 61.1 1104000
  11. 143 mA 4233 mV 69°C 60.5 408000
  12. 155 mA 4233 mV 68°C 60.5 408000
  13. 120 mA 4240 mV 68°C 60.3 408000
Copy the Code
You should add the PMU's thermal sensor /sys/devices/b0170000.i2c/i2c-0/0-0065/atc2603c-hwmon.0/ic_temperature to your wiki page.


tkaiser  
Edited by tkaiser at Thu Oct 8, 2015 04:11

Update: At least trip_point_2_temp is working! I was able to define 80°C and when reaching this value the Guitar started an emergency shutdown:

  1. 186 mA 4211 mV 78°C 66.4 1104000
  2. 193 mA 4211 mV 80°C 66.4 1104000

  3. Message from syslogd@Lemuntu at Oct  8 09:57:57 ...
  4. kernel:[74601.156459] thermal thermal_zone1: critical temperature reached(80 C),shutting down
  5. Connection to 192.168.83.100 closed by remote host.
  6. Connection to 192.168.83.100 closed.
Copy the Code


So it's working partially and all you (as LeMaker) have to do is to enable thermal throttling in the kernel to prevent shutdowns.

hnsncxy  
tkaiser replied at Thu Oct 8, 2015 03:59
Since you sent me a Guitar I was able to find that out within minutes: One of the first steps I too ...

Thanks for your sharing . . .

jacer  
Good job, Lemaker team! It could be a killer product.

ponor  
Note: The author has been banned or deleted.

pandora charms
moncler outlet
canada goose outlet
cheap jordans
michael kors outlet clearance
kate spade
air max 2018
timberland boots
ugg boots
canada goose outlet
moncler outlet
ecco outlet
oakley sunglasses
nike cortez
nike zoom
converse all star
nike air more money
canada goose outlet
moncler outlet
adidas shoes
pandora jewelry
coach factorty outlet
canadian goose
coach outlet
coach
asics outlet
ray ban sunglasses
coach factory outlet
toms outlet
michael kors outlet
mont blanc
kate spade outlet
pandora charms sale clearance
pandora jewelry outlet
adidas shoes
supreme clothing
oakland athletics jerseys
pandora store
coach factory outlet
converse outlet store
columbia sportswear
uggs
tory burch outlet
toms outlet
tory burch outlet
cheap nfl jerseys
coach outlet store
canada goose outlet
swarovski outlet
adidas yeezy boost
nike air max
pittsburgh pirates jerseys
mlb jerseys
mulberry outlet
lebron james shoes
uggs outlet
louis vuitton outlet online
kobe shoes
discount oakley sunglasses
uggs outlet
cincinnati reds jerseys
philipp plein shirt
coach factory outlet
coach factorty outlet
kobe bryant shoes
fitflops
kate spade bags
louis vuitton outlet store
red bottoms
kate spade handbags
michael kors outlet
tory burch outlet
coach outlet
kate spade bags
kate spade outlet
uggs
fred perry polo
coach outlet
adidas shoes
pandora
longchamp handbags
yeezy 350 boost
polo outlet
prada handbags
prada outlet
nike outlet online
nike shoes
adidas shoes
christian louboutin outlet
ecco shoes
cheap jordans free shipping
canada goose outlet
supreme clothing
birkenstock sandals
nike zoom
uggs outlet
adidas nmd
nike air max zero
ugg boots
coach outlet store online clearances
kate spade handbags
nike shoes
hermes handbags
coach canada outlet
new york mets jerseys
cheap jordan shoes
adidas nmd shoes
ralph lauren
timberland boots
ysl outlet
coach outlet
coach outlet online
coach factory outlet
ray ban sunglasses
oakley sunglasses
louis vuitton outlet
canada goose
nike shox
michael kors outlet
kate spade outlet store
ugg boots
180920yueqin

You have to log in before you can reply Login | Sign Up

Points Rules