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test [2021/03/31 18:26] – [Encoders] ursgraftest [2021/03/31 18:27] – [LEDs and buttons] ursgraf
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 Next we want to check if all leds and buttons work as desired. Change to root mode  Next we want to check if all leds and buttons work as desired. Change to root mode 
 <code> <code>
-debian@beaglebone:$ su+ost@bblue:$ su
 </code> </code>
 The password is "root". Change into  The password is "root". Change into 
 <code> <code>
-root@beaglebone:$ cd /sys/class/gpio+root@bblue:$ cd /sys/class/gpio
 </code> </code>
 and add the pins involved to the gpio array with and add the pins involved to the gpio array with
 <code> <code>
-root@beaglebone:$ echo 49 > export +root@bblue:$ echo 49 > export 
-root@beaglebone:$ echo 57 > export +root@bblue:$ echo 57 > export 
-root@beaglebone:$ echo 97 > export +root@bblue:$ echo 97 > export 
-root@beaglebone:$ echo 98 > export +root@bblue:$ echo 98 > export 
-root@beaglebone:$ echo 113 > export +root@bblue:$ echo 113 > export 
-root@beaglebone:$ echo 116 > export+root@bblue:$ echo 116 > export
 </code> </code>
 The blue led should light up with  The blue led should light up with 
 <code> <code>
-root@beaglebone:$ echo out > gpio98/direction +root@bblue:$ echo out > gpio98/direction 
-root@beaglebone:$ echo 1 > gpio98/value+root@bblue:$ echo 1 > gpio98/value
 </code> </code>
 and stop lighting with and stop lighting with
 <code> <code>
-root@beaglebone:$ echo 0 > gpio98/value+root@bblue:$ echo 0 > gpio98/value
 </code> </code>
 Do the same with the red led Do the same with the red led
 <code> <code>
-root@beaglebone:$ echo out > gpio49/direction +root@bblue:$ echo out > gpio49/direction 
-root@beaglebone:$ echo 1 > gpio49/value +root@bblue:$ echo 1 > gpio49/value 
-root@beaglebone:$ echo 0 > gpio49/value+root@bblue:$ echo 0 > gpio49/value
 </code> </code>
 And the green led And the green led
 <code> <code>
-root@beaglebone:$ echo out > gpio116/direction +root@bblue:$ echo out > gpio116/direction 
-root@beaglebone:$ echo 1 > gpio116/value +root@bblue:$ echo 1 > gpio116/value 
-root@beaglebone:$ echo 0 > gpio116/value+root@bblue:$ echo 0 > gpio116/value
 </code> </code>
 Read the state of the blue button with Read the state of the blue button with
 <code> <code>
-root@beaglebone:$ echo in > gpio97/direction +root@bblue:$ echo in > gpio97/direction 
-root@beaglebone:$ cat gpio97/value+root@bblue:$ cat gpio97/value
 </code> </code>
 Repeat the last command with the button pressed. Do the same with the red button Repeat the last command with the button pressed. Do the same with the red button
 <code> <code>
-root@beaglebone:$ echo in > gpio57/direction +root@bblue:$ echo in > gpio57/direction 
-root@beaglebone:$ cat gpio57/value+root@bblue:$ cat gpio57/value
 </code> </code>
 And the green button And the green button
 <code> <code>
-root@beaglebone:$ echo in > gpio113/direction +root@bblue:$ echo in > gpio113/direction 
-root@beaglebone:$ cat gpio113/value+root@bblue:$ cat gpio113/value
 </code> </code>
 Exit root mode with Exit root mode with
 <code> <code>
-root@beaglebone:$ exit+root@bblue:$ exit
 </code> </code>
  
test.txt · Last modified: 2021/10/06 11:15 by ursgraf