Blog 04 - Revision history

Cartridge1987: /* !BETA! */

2015-09-21T15:52:14Z

!BETA!

Cartridge1987: /* !BETA! */

2015-09-21T13:10:06Z

!BETA!

Cartridge1987 at 11:48, 16 September 2015

2015-09-16T11:48:20Z

Cartridge1987 at 11:23, 16 September 2015

2015-09-16T11:23:33Z

Cartridge1987: /* !BETA! */

2015-09-16T10:45:24Z

!BETA!

Cartridge1987: /* !BETA! */

2015-09-16T10:44:59Z

!BETA!

Cartridge1987 at 14:56, 11 September 2015

2015-09-11T14:56:11Z

Cartridge1987: in this text harry explains how to get the raspberry user interface show how late it is.

2015-09-11T11:40:06Z

in this text harry explains how to get the raspberry user interface show how late it is.

New page

== !BETA! ==

Clock visible on machine:

#!/bin/bash

# What display to use:
DISPL="bw_tool -I -D /dev/i2c-1 -a 94"
# e.g. for SPI use:
#DISPL="bw_tool -D /dev/spidev1.0 -a 94"

#clean the display
$DISPL -W 10:0:b

while true; do
#get cpu loads
load=`cut -d' ' -f-3 /proc/loadavg`

#print the current time
$DISPL -W 11:00:b
$DISPL -t `date +%H:%M:%S`

#print the load averages
$DISPL -W 11:20:b
$DISPL -t $load

#idle for 5 seconds
sleep 5
done

Code used from the [http://www.bitwizard.nl/wiki/index.php/User_Interface User Interface page.]

( Reference to which display to use

$DISPL -W 10:0:b
bytes

load
)
( use ctrl c to get out of the code ) ( ctrl z to let the code continue )

nano timer
sh timer

echo $PATH

/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

sh mods.x^C
chmod +x timer
ls -l

total 56
-rw-r--r-- 1 root root 0 Sep 3 14:10 _
drwxr-xr-x 5 pi pi 4096 Sep 3 10:27 bw_rpi_tools
drwxrwxr-x 2 pi pi 4096 Jan 27 2015 python_games
-rwxr-xr-x 1 root root 480 Sep 7 08:47 timer
drwxr-xr-x 9 pi pi 4096 Aug 31 14:04 wiringPi

./timer

With my raspberry I sadly had the problem that it was 2 hours earlier in time. So, I had to change it to the correct current time.

I changed the time manually:
to see the current time:
uname -a
Linux seniorservix 3.18.11-v7+ #781 SMP PREEMPT Tue Apr 21 18:07:59 BST 2015 armv7l GNU/Linux

Give the current date:
month-day-hours-minutes – year . seconds

( always add a zero before a number than is under 10! so 8 = 08 )
So 12:13:14 7 september 2015 becomes:
090712132015.14

date 090711002015.00
Mon Sep 7 11:00:00 UTC 2015

At this point the original time was still visible on the screen. So I removed it from the screen and printed it out again.
bw_tool -I -D /dev/i2c-1 -a 94 -w 10:00
./timer

It directly printed the correct time that I gave.

[[File:RaspberryPiClock.png|400px|thumb|left|]]

( when you turn it off and of by ctrl x and z it will also just come back to the right time. )

@@ Line 78: / Line 78: @@
 [[File:RaspberryPiClock.png|400px|thumb|none|]]
-If you also want the year to appear, you have to add %F-:
+If you also want the day, month and year to appear, you have to add %F:
- date +%F_%H-%M-%S
+ date +%F:%H:%M:%S
 == Change Time ==

@@ Line 54: / Line 54: @@
 In the script you have to copy paste the code from above. ( Note: If you don't have a i2c-1 you of course have to use something else )
- ./Clock  or sh Clock
+ ./Clock
 To run it. This gave a error.
@@ Line 74: / Line 74: @@
 If the x's are visible in your line you can use it.
- ./Clock or sh Clock
+ ./Clock
 [[File:RaspberryPiClock.png|400px|thumb|none|]]
+If you also want the year to appear, you have to add %F-:
+ date +%F_%H-%M-%S
 == Change Time ==

@@ Line 2: / Line 2: @@
 In this blog, I am going to show how to make a clock including load averages visible on your RPi_UI board's display.
-The code I used is:
+The code I putted in a script is:
  #!/bin/bash
@@ Line 48: / Line 48: @@
+To make script you have to do:
+nano Clock
+( You can change the name Clock also with something else. )
+In the script you have to copy paste the code from above. ( Note: If you don't have a i2c-1 you of course have to use something else )
+ ./Clock  or sh Clock
+To run it. This gave a error.
+You have to add
+ chmod +x timer
-load
+To make your command for running Clock.
-)
-( use ctrl c to get out of the code ) ( ctrl z to let the code continue )
- nano timer
- sh timer
- echo $PATH
- /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+Do:
- sh mods.x^C
- chmod +x timer
  ls -l
+To look which commands are executable:
  total 56
@@ Line 72: / Line 69: @@
  drwxr-xr-x 5 pi   pi    4096 Sep  3 10:27 bw_rpi_tools
  drwxrwxr-x 2 pi   pi    4096 Jan 27  2015 python_games
- -rwxr-xr-x 1 root root   480 Sep  7 08:47 timer
+ -rwxr-xr-x 1 root root   480 Sep  7 08:47 Clock
  drwxr-xr-x 9 pi   pi    4096 Aug 31 14:04 wiringPi
+If the x's are visible in your line you can use it.
- ./timer
+ ./Clock or sh Clock
-With my raspberry I sadly had the problem that it was 2 hours earlier in time. So, I had to change it to the correct current time.
+[[File:RaspberryPiClock.png|400px|thumb|none|]]
-I changed the time manually:
+== Change Time ==
-to see the current time:
+With my raspberry I had the problem that it was 2 hours earlier in time. So, I had to change it to the correct current time.
+I changed the time manually.
+To see the current time:
  uname -a
 Linux seniorservix 3.18.11-v7+ #781 SMP PREEMPT Tue Apr 21 18:07:59 BST 2015 armv7l GNU/Linux
-Give the current date:
+To Give the current date:
 month-day-hours-minutes – year   .  seconds
-( always add a zero before a number than is under 10! so 8 = 08  )
+( Always add a zero before a number than is under 10! so 8 = 08  )
-So 12:13:14 7 september 2015  becomes:
+Example of time:
+:13:14 7 september 2015  becomes:
 090712132015.14
+To use it add date for it:
  date 090711002015.00
+The terminal will print out:
 Mon Sep  7 11:00:00 UTC 2015
@@ Line 100: / Line 109: @@
 It directly printed the correct time that I gave.
+The Raspberry Pi will remember the time you gave it so don't be scared to turn off or reboot your Raspberry Pi!
-[[File:RaspberryPiClock.png|400px|thumb|none|]]
-( when you turn it off and of by ctrl x and z it will also just come back to the right time. )
 On [[Blog 05]] I will print the temperature on the display.

@@ Line 34: / Line 34: @@
+Code  extra explanation:
-( Reference to which display to use
+ DISPL="bw_tool -I -D /dev/i2c-1 -a 94"
+This code is made so you don't have a big mess of a code. The codes with $DISPL reference to this code.
+So instead of always typing bw_tool -I -D /dev/i2c-1 -a 94, he directly knows he has to use the one form DISPL, which is the same.
+ $DISPL -W 10:0:b
+The -W 10:00 removes the previous text, and the :b is for doing it in bytes. This is not really needed but, with it you know for sure every command is going fine.
+*
+ $DISPL -W 11:00:b
+-W -11:00 is for defining on which line you want your text. That is for 11:00 the first line and with 11:20 the second line.
-$DISPL -W 10:0:b
-bytes
 load

← Older revision		Revision as of 14:56, 11 September 2015
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	( when you turn it off and of by ctrl x and z it will also just come back to the right time. )		( when you turn it off and of by ctrl x and z it will also just come back to the right time. )

			On [[Blog 05]] I will print the temperature on the display.