Use manual controls to make sure things are setup properly.   There is a
command line utility to do this.   Also make sure you are not confusing
BCM numbering vs physical pin.  i.e.  GPIO 17 is Physical pin 11.   Then
also make sure nothing is using GPIO 17.  (DAC Hats use GPIO pins for
control)

To see the state of everything

Code:
--------------------
    
  tc@Pi4-armhf-Devel:~$ sudo readall.sh
  +-----+---------+------+---+-----++-----+---+------+---------+-----+
  | BCM |  NAME   | MODE | V |  Physical  | V | MODE |  NAME   | BCM |
  +-----+---------+------+---+-----++-----+---+------+---------+-----+
  |     |    3.3v |      |   |   1 ||  2  |   |      |      5v |     |
  |  2  | GPIO  2 | ALT0 | 1 |   3 ||  4  |   |      |      5v |     |
  |  3  | GPIO  3 | ALT0 | 1 |   5 ||  6  |   |      |      0v |     |
  |  4  | GPIO  4 |   IN | 1 |   7 ||   8 | 1 |   IN | GPIO 14 |  14 |
  |     |      0v |      |   |   9 ||  10 | 1 |   IN | GPIO 15 |  15 |
  | 17  | GPIO 17 |   IN | 0 |  11 ||  12 | 0 | ALT0 | GPIO 18 |  18 |
  | 27  | GPIO 27 |   IN | 0 |  13 ||  14 |   |      |      0v |     |
  | 22  | GPIO 22 |   IN | 0 |  15 ||  16 | 0 |   IN | GPIO 23 |  23 |
  |     |    3.3v |      |   |  17 ||  18 | 0 |   IN | GPIO 24 |  24 |
  | 10  | GPIO 10 | ALT0 | 0 |  19 ||  20 |   |      |      0v |     |
  |  9  | GPIO  9 | ALT0 | 0 |  21 ||  22 | 0 |   IN | GPIO 25 |  25 |
  | 11  | GPIO 11 | ALT0 | 0 |  23 ||  24 | 1 |  OUT | GPIO  8 |   8 |
  |     |      0v |      |   |  25 ||  26 | 1 |  OUT | GPIO  7 |   7 |
  |  0  | GPIO  0 |   IN | 1 |  27 ||  28 | 1 |   IN | GPIO  1 |   1 |
  |  5  | GPIO  5 |   IN | 1 |  29 ||  30 |   |      |      0v |     |
  |  6  | GPIO  6 |   IN | 1 |  31 ||  32 | 0 |   IN | GPIO 12 |  12 |
  | 13  | GPIO 13 |   IN | 0 |  33 ||  34 |   |      |      0v |     |
  | 19  | GPIO 19 | ALT0 | 0 |  35 ||  36 | 0 |   IN | GPIO 16 |  16 |
  | 26  | GPIO 26 |   IN | 0 |  37 ||  38 | 0 | ALT0 | GPIO 20 |  20 |
  |     |      0v |      |   |  39 ||  40 | 0 | ALT0 | GPIO 21 |  21 |
  +-----+---------+------+---+-----++-----+---+------+---------+-----+
  | BCM |  NAME   | MODE | V |  Physical  | V | MODE |  NAME   | BCM |
  +-----+---------+------+---+-----++-----+---+------+---------+-----+
  
--------------------


Set GPIO 17 as an output

Code:
--------------------
    
  tc@Pi4-armhf-Devel:~$ sudo pcp-gpio mode 17 out
  
--------------------

Toggle GPIO 17   or set GPIO 17 to a value

Code:
--------------------
    
  tc@Pi4-armhf-Devel:~$ sudo pcp-gpio toggle 17
  tc@Pi4-armhf-Devel:~$ sudo pcp-gpio write 17 1    <----On
  tc@Pi4-armhf-Devel:~$ sudo pcp-gpio write 17 0    <----Off
  
--------------------


If this still doesn't work, then you may have damaged your pi.



piCorePlayer a small player for the Raspberry Pi in RAM. 
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