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hardware
Makefile
README
keyboard_demo.c
sounder_demo.c

README

Try to get a MAX7349 matrix keyboard/sounder chip going

With AD0 grounded matrix at addr 0x70, sound at 0x72



Pinout, based on Q10-24 Proto Board from kingetc.com and
https://hackaday.io/project/27520-pimp-personal-information-manager-pager/log/69681-blackberry-q10-keyboard-destructive-disassembly
https://hackaday.io/project/27520-pimp-personal-information-manager-pager/log/70581-solder-once-beepout-twice


   |	GND	26 |  1 GND
   |		25 |  2
   | 6  COL3	24 |  3
   | 4  ROW2	23 |  4 COL2  14
---- 7  COL4	22 |  5 COL1  15
     5  ROW3	21 |  6 ROW1   3
     8  ROW4	20 |  7 COL0  16
     9  ROW5	19 |  8	ROW0   2
----    D1	18 |  9
   |    D2	17 | 10
   |    D3	16 | 11
   |    D4	15 | 12
   | 10 ROW6	14 | 13