lcd4linux-users

[lcd4linux] Keypad support?

[Thorsten G. <dl...@gm...>]

Hi,

i have a question about lcd4linux and its keypad support.

Originally i use a LCD2USB (no pushbuttons connected) and a keypad
matrix connected to parport0 together with LCDproc/LCDd.

The keypad is connected as following:

        +5V ----------+--------+--------+--------+
                      |        |        |        |
                     22k      22k      22k      22k
                      |        |        |        |
 /STRB (1)  -|<---+--------+--------+--------+   |
                  |   |    |   |    |   |    |   |
                  o   |    o   |    o   |    o   |
                S1 \  |  S2 \  |  S3 \  |  S4 \  |
                  o   |    o   |    o   |    o   |
                  |   |    |   |    |   |    |   |
                  +---+    +---+    +---+    +---+
                      |        |        |        |
 /LF (14)   -|<---+-----------------+--------+   |
                  |   |        |    |   |    |   |
                  o   |        |    o   |    o   |
                S5 \  |        |  S6 \  |  S7 \  |
                  o   |        |    o   |    o   |
                  |   |        |    |   |    |   |
                  +---+        |    +---+    +---+
                      |        |        |        |
 /ACK (10)  ----------+        |        |        |
 BUSY (11)  -------------------+        |        |
 PE (12)    ----------------------------+        |
 SELIN (13) -------------------------------------+

Is it possible to use the LCD2USB together with the keypad with
lcd4linux? If there is no direct keypad support, can i use the
GPIO support of lcd4linux to make the keypad usable?

Thanks in advance.

Regards, Thorsten

Re: [lcd4linux] Keypad support?

[Thorsten G. <dl...@gm...>]

Again the keymatrix schematic readable (hopefully):

........+5V ----------+--------+--------+--------+
......................|........|........|........|
....................22k......22k......22k......22k
......................|........|........|........|
./STRB.(1)..-|<---+--------+--------+--------+...|
..................|...|....|...|....|...|....|...|
..................o...|....o...|....o...|....o...|
................S1.\..|..S2.\..|..S3.\..|..S4.\..|
..................o...|....o...|....o...|....o...|
..................|...|....|...|....|...|....|...|
..................+---+....+---+....+---+....+---+
......................|........|........|........|
./LF.(14)...-|<---+-----------------+--------+...|
..................|...|........|....|...|....|...|
..................o...|........|....o...|....o...|
................S5.\..|........|..S6.\..|..S7.\..|
..................o...|........|....o...|....o...|
..................|...|........|....|...|....|...|
..................+---+........|....+---+....+---+
......................|........|........|........|
./ACK.(10)..----------+........|........|........|
.BUSY (11)..-------------------+........|........|
.PE.(12)....----------------------------+........|
.SELIN (13) -------------------------------------+

Re: [lcd4linux] Keypad support?

[Michelle K. <lin...@ta...>]

Hello Thorsten,

the first one was perfectly readable, but this

Am 2010-01-02 18:13:10, schrieb Thorsten Godau:
> Again the keymatrix schematic readable (hopefully):
> 
> ........+5V ----------+--------+--------+--------+
> ......................|........|........|........|
> ....................22k......22k......22k......22k
> ......................|........|........|........|
> ./STRB.(1)..-|<---+--------+--------+--------+...|
> ..................|...|....|...|....|...|....|...|
> ..................o...|....o...|....o...|....o...|
> ................S1.\..|..S2.\..|..S3.\..|..S4.\..|

is unreadable sick...   :-/

Hmmm, someone have only to use the right MUA.  :-D

Thanks, Greetings and nice Day/Evening
    Michelle Konzack
    Electronic Engineer
    Tamay Dogan Network
    Debian GNU/Linux Consultant

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