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component sim_matrix_kb "convert HAL pin inputs to keycodes";
pin out u32 out "pin that outputs the Keycode";
pin in bit button.c00.r##[8] "array of inputs";
pin in bit button.c01.r##[8] "array of inputs";
pin in bit button.c02.r##[8] "array of inputs";
pin in bit button.c03.r##[8] "array of inputs";
pin in bit button.c04.r##[8] "array of inputs";
pin in bit button.c05.r##[8] "array of inputs";
pin in bit button.c06.r##[8] "array of inputs";
pin in bit button.c07.r##[8] "array of inputs";
variable int keydown = 0xC0;
variable int keyup = 0x80;
variable int nokeychange = 0x40;
variable int last[64];
function _;
license "GPL";
author "Chris S Morley";
;;
FUNCTION(_) {
int num = 0;
int c, r, cur_button;
int allup_flag = true;
for (r = 0; r < 8; r++){
for (c = 0; c < 8; c++){
if (c==0) cur_button = button_c00_r(r);
if (c==1) cur_button = button_c01_r(r);
if (c==2) cur_button = button_c02_r(r);
if (c==3) cur_button = button_c03_r(r);
if (c==4) cur_button = button_c04_r(r);
if (c==5) cur_button = button_c05_r(r);
if (c==6) cur_button = button_c06_r(r);
if (c==7) cur_button = button_c07_r(r);
if (cur_button == true) allup_flag = false;
num = r*8+c; // row * number of rows + column
if ( cur_button != last[num] ){
rtapi_print("row: %d column: %d code: %d\n",r,c,num);
last[num] = cur_button;
if (cur_button == 1){
out = num | keydown;
return;
}else{
out = num | keyup;
return;
}
}
}
}
if (allup_flag){
out = 0;
}else{
out = nokeychange;
}
}
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