1 files changed, 244 insertions, 0 deletions

diff --git a/keyboards/converter/hp_46010a/matrix.c b/keyboards/converter/hp_46010a/matrix.c
new file mode 100644
index 000000000..03fcb2424
--- /dev/null
+++ b/keyboards/converter/hp_46010a/matrix.c
@@ -0,0 +1,244 @@
+/*
+Copyright 2018 listofoptions <[email protected]>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+#if defined(__AVR__)
+#include <avr/io.h>
+#endif
+#include <util/delay.h>
+
+#include "wait.h"
+#include "print.h"
+#include "debug.h"
+#include "util.h"
+#include "matrix.h"
+#include "timer.h"
+#include <LUFA/Drivers/Peripheral/SPI.h>
+
+#include "config.h"
+
+
+#ifndef DEBOUNCE
+#   define DEBOUNCE 5
+#endif
+
+#if ( DEBOUNCE > 0 )
+static uint16_t debouncing_time         ;
+static bool     debouncing      = false ;
+#endif
+
+static uint8_t matrix [MATRIX_ROWS] = {0};
+
+#if ( DEBOUNCE > 0 )
+static uint8_t matrix_debounce_old [MATRIX_ROWS] = {0};
+static uint8_t matrix_debounce_new [MATRIX_ROWS] = {0};
+#endif 
+
+__attribute__ ((weak))
+void matrix_init_quantum(void) {
+    matrix_init_kb();
+}
+
+__attribute__ ((weak))
+void matrix_scan_quantum(void) {
+    matrix_scan_kb();
+}
+
+__attribute__ ((weak))
+void matrix_init_kb(void) {    
+    matrix_init_user();
+}
+
+__attribute__ ((weak))
+void matrix_scan_kb(void) {
+    matrix_scan_user();
+}
+
+__attribute__ ((weak))
+void matrix_init_user(void) {
+}
+
+__attribute__ ((weak))
+void matrix_scan_user(void) {
+}
+
+// the keyboard's internal wiring is such that the inputs to the logic are
+// a clock signal, and a reset line.
+// the output is a single output pin. im bitbanging here, but the SPI controller
+// would work normally
+//
+// the device functions, by using the clock signal to count 128 bits, the lower
+// 3 bits of this 7 bit counter are tied to a 1-of-8 multiplexer, this forms 
+// the columns.
+// the upper 4 bits form the rows, and are decoded using bcd to decimal 
+// decoders, so that 14 out of 16 of the outputs are wired to the rows of the 
+// matrix. each switch has a diode, such that the row signal feeds into the
+// switch, and then into the diode, then into one of the columns into the 
+// matrix. the reset pin can be used to reset the entire counter.
+
+#define RESET _BV(PB0)
+#define SCLK  _BV(PB1)
+#define SDATA _BV(PB3)
+#define LED   _BV(PD6) 
+
+inline
+static
+void SCLK_increment(void) {
+    PORTB &= ~SCLK ;
+    _delay_us( 4 ) ; // make sure the line is stable
+    PORTB |= SCLK ;
+    _delay_us( 4 ) ;
+    
+    return ;
+}    
+
+inline
+static
+void Matrix_Reset(void) {
+    PORTB |= RESET ;
+    _delay_us( 4 ) ; // make sure the line is stable
+    PORTB &= ~RESET ;
+    
+    return ;
+}
+
+inline
+static
+uint8_t Matrix_ReceiveByte (void) {
+    uint8_t received = 0 ;
+    uint8_t temp     = 0 ;
+    for ( uint8_t bit = 0; bit < MATRIX_COLS; ++bit ) {
+        // toggle the clock
+        SCLK_increment();
+        temp      = (PINB & SDATA) << 4 ;
+        received |= temp >> bit ;
+    }
+
+    return received ;
+}
+
+inline
+static
+void Matrix_ThrowByte(void) {
+    // we use MATRIX_COLS - 1 here because that would put us at 7 clocks
+    for ( uint8_t bit = 0; bit < MATRIX_COLS - 1; ++bit ) {
+        // toggle the clock
+        SCLK_increment();
+    }
+    
+    return ;
+}
+
+void matrix_init () {
+    // debug_matrix = 1;
+    // PB0 (SS) and PB1 (SCLK) set to outputs
+    DDRB |= RESET | SCLK ;
+    // PB2, is unused, and PB3 is our serial input
+    DDRB &= ~SDATA ;
+    
+    // SS is reset for this board, and is active High
+    // SCLK is the serial clock and is active High
+    PORTB &= ~RESET ;
+    PORTB |= SCLK   ;
+
+    // led pin
+    DDRD  |= LED ;
+    PORTD &= ~LED ;
+
+    matrix_init_quantum();
+
+    //toggle reset, to put the keyboard logic into a known state
+    Matrix_Reset() ;
+}
+
+uint8_t matrix_scan(void)  {
+
+    // the first byte of the keyboard's output data can be ignored
+    Matrix_ThrowByte();
+    
+#if ( DEBOUNCE > 0 )
+
+    for ( uint8_t row = 0 ; row < MATRIX_ROWS ; ++row ) {
+        //transfer old debouncing values
+        matrix_debounce_old[row] = matrix_debounce_new[row] ;
+        // read new key-states in
+        matrix_debounce_new[row] = Matrix_ReceiveByte() ;
+            
+        if ( matrix_debounce_new[row] != matrix_debounce_old[row] ) {
+            debouncing      = true ;
+            debouncing_time = timer_read() ;
+        }
+    }
+    
+#else
+    // without debouncing we simply just read in the raw matrix
+    for ( uint8_t row = 0 ; row < MATRIX_ROWS ; ++row ) {
+        matrix[row] = Matrix_ReceiveByte ;
+    }
+#endif 
+
+    
+#if ( DEBOUNCE > 0 )
+    if ( debouncing && ( timer_elapsed( debouncing_time ) > DEBOUNCE ) ) {
+        
+        for ( uint8_t row = 0 ; row < MATRIX_ROWS ; ++row ) {
+            matrix[row] = matrix_debounce_new[row] ;
+        }
+
+        debouncing = false ;
+    }
+#endif
+    Matrix_Reset() ;
+    
+    matrix_scan_quantum() ;
+    return 1;
+}
+
+inline
+uint8_t matrix_get_row( uint8_t row ) {
+    return matrix[row];
+}
+
+void matrix_print(void)
+{
+    print("\nr/c 01234567\n");
+
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        print_hex8(row); print(": ");
+        print_bin_reverse8(matrix_get_row(row));
+        print("\n");
+    }
+}
+
+inline
+uint8_t matrix_rows(void) {
+    return MATRIX_ROWS;
+}
+
+inline
+uint8_t matrix_cols(void) {
+    return MATRIX_COLS;
+}
+
+// as an aside, I used the M0110 converter:
+// tmk_core/common/keyboard.c, quantum/matrix.c, and the project layout of the planck
+// the online ducmentation starting from : 
+// https://docs.qmk.fm/#/config_options
+// https://docs.qmk.fm/#/understanding_qmk
+// and probably a few i forgot....
\ No newline at end of file