Blog 08 - Revision history

Cartridge1987: /* CPU & GPU sensor */

2015-09-17T11:00:47Z

CPU & GPU sensor

Cartridge1987: /* CPU & GPU sensor */

2015-09-17T11:00:16Z

CPU & GPU sensor

Cartridge1987: /* CPU & GPU sensor */

2015-09-17T10:57:55Z

CPU & GPU sensor

Cartridge1987: /* CPU & GPU sensor */

2015-09-17T10:52:28Z

CPU & GPU sensor

Cartridge1987 at 10:41, 17 September 2015

2015-09-17T10:41:47Z

Cartridge1987: /* CPU & GPU sensor */

2015-09-17T10:36:30Z

CPU & GPU sensor

Cartridge1987: /* CPU & GPU sensor */

2015-09-17T10:35:29Z

CPU & GPU sensor

Cartridge1987: Created page with " == CPU & GPU sensor == For this I combined 2 codes. Together they should display the cpu + gpu temperature on your display. And recheck it every 5 seconds. This should than ..."

2015-09-17T10:20:20Z

Created page with " == CPU & GPU sensor == For this I combined 2 codes. Together they should display the cpu + gpu temperature on your display. And recheck it every 5 seconds. This should than ..."

New page

== CPU & GPU sensor ==

For this I combined 2 codes. Together they should display the cpu + gpu temperature on your display. And recheck it every 5 seconds. This should than also be visible on your display.

The code for reading the cpu and gpu and the clock code from [[Blog 04]]

The code first gets the cpu temp with thermal_zone0
The result would be something like: 36318
363108 goes trough 1000 to get it too 36 ( it only looks at the full numbers, otherwise it should be 36.318 )
then the line under it does 35780 trough 100, what makes it 363
After we use %. What % does it that is divides 363 with full 36's and the time it can't get divided with 36 it will give the amount of number he still got.
(What is of course 3.) This is a smart trick to get the 1 decimal place after the number.

After that we do the gpu temperature
the result from measure_temp you would normally would look like:
temp=34.7'C

We are going to print 'GPU Temp: 'before it so we don't want temp= to appear. To remove it we do: gpuTemp0//temp=
to say temp= has to go away

( sadly the raspberry pi display doesn't know Celsius mark so I replaced it with: ' )

#!/bin/bash
DISPL="bw_tool -I -D /dev/i2c-1 -a 94"

$DISPL -W 10:0:b

while true; do
cpuTemp0=$(cat /sys/class/thermal/thermal_zone0/temp)
cpuTemp1=$(($cpuTemp0/1000))
cpuTemp2=$(($cpuTemp0/100))
cpuTempM=$(($cpuTemp2 % $cpuTemp1))

gpuTemp0=$(/opt/vc/bin/vcgencmd measure_temp)
gpuTemp0=${gpuTemp0//temp=/}

$DISPL -W 11:00:b
$DISPL -t "CPU Temp: "$cpuTemp1"."$cpuTempM"'C"

$DISPL -W 11:20:b
$DISPL -t "GPU Temp: "$gpuTemp0

sleep 5

done

[[File:CPU&GPU.jpg|400px|thumb|none|]]

The maximum temperature the raspberry pi should get is 70 degrees!
If it is getting higher than 70 degrees it is recommended to cool the Raspberry pi down fast!

@@ Line 6: / Line 6: @@
 The code first gets the CPU temp with thermal_zone0
 The result would be something like: 36318.
-goes trough 1000 to get it too 36. ( it only looks at the full numbers, otherwise it should be 36.318 )
+goes trough 1000 to get it to 36. ( it only looks at the full numbers, otherwise it should be 36.318 )
 Then the line under it does 36318 trough 100, what makes it 363
 After we use %. What % does is that it divides 363 with full 36's and the time it can't get divided with 36 it will give the amount of numbers it got left.

@@ Line 5: / Line 5: @@
 The code first gets the CPU temp with thermal_zone0
-The result would be something like: 36318
+The result would be something like: 36318.
 goes trough 1000 to get it too 36. ( it only looks at the full numbers, otherwise it should be 36.318 )
 Then the line under it does 36318 trough 100, what makes it 363
 After we use %. What % does is that it divides 363 with full 36's and the time it can't get divided with 36 it will give the amount of numbers it got left.

← Older revision		Revision as of 10:41, 17 September 2015
Line 53:		Line 53:

	The maximum temperature the raspberry pi should get is 70 degrees!		The maximum temperature the raspberry pi should get is 70 degrees!
	If it is getting higher than 70 degrees it is recommended to cool the Raspberry pi down fast!		If it is getting higher than 70 degrees it is recommended to cool the Raspberry pi down as fast as you can!

@@ Line 2: / Line 2: @@
 == CPU & GPU sensor ==
-For this I combined 2 codes. Together they should display the CPU + GPU temperature on your display, which should be rechecked every 5 seconds. The temperatures will be visible on your display.
+For this I combined 2 codes. (The code for reading [https://www.raspberrypi.org/forums/viewtopic.php?f=91&t=34994&start=25 the cpu and gpu] and the clock code from [[Blog 04]]) Together they should display the CPU + GPU temperature on your display, which should be rechecked every 5 seconds. The temperatures will be visible on your display.
+The code first gets the CPU temp with thermal_zone0
-The code for reading [https://www.raspberrypi.org/forums/viewtopic.php?f=91&t=34994&start=25 the cpu and gpu] and the clock code from [[Blog 04]]
-The code first gets the cpu temp with thermal_zone0
 The result would be something like: 36318
-goes trough 1000 to get it too 36 ( it only looks at the full numbers, otherwise it should be 36.318 )
+goes trough 1000 to get it too 36. ( it only looks at the full numbers, otherwise it should be 36.318 )
-then the line under it does 35780 trough 100, what makes it 363
+Then the line under it does 36318 trough 100, what makes it 363
-After we use %. What % does it that is divides 363 with full 36's and the time it can't get divided with 36 it will give the amount of number he still got.
+After we use %. What % does is that it divides 363 with full 36's and the time it can't get divided with 36 it will give the amount of numbers it got left.
 (What is of course 3.) This is a smart trick to get the 1 decimal place after the number.
 The (( )) is always needed at +, *, /, %.   ( for the -, ** you always use [[ ]] )
-After that we do the gpu temperature
+After that we get the GPU temperature.
-the result from measure_temp you would normally would look like:
+The result from measure_temp would normally look something like:
 temp=34.7'C
+We are going to print 'GPU Temp: 'before the temperature, so we don't want 'temp=' to appear. To remove it we do:  gpuTemp0//temp=
-We are going to print 'GPU Temp: 'before it so we don't want temp= to appear. To remove it we do:  gpuTemp0//temp=
 to say temp= has to go away

@@ Line 54: / Line 54: @@
 The maximum temperature the raspberry pi should get is 70 degrees!
 If it is getting higher than 70 degrees it is recommended to cool the Raspberry pi down fast!
+Look at my other projects at the [[Blog list]]