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controller/Scan/matrix/matrix.c

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/* Copyright (C) 2011 by Jacob Alexander
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "matrix.h"
#define REG_SET(reg) reg |= (1 << ( matrix[row][col] % 10 ) )
#define PIN_SET_COL(pin) \
switch ( scanMode ) { \
case scanCol: \
case scanCol_powrRow: \
case scanDual: \
REG_SET(port##pin); break; \
case scanRow_powrCol: REG_SET(ddr##pin); REG_SET(port##pin); break; \
} \
break
#define PIN_SET_ROW(pin) \
switch ( scanMode ) { \
case scanRow: \
case scanRow_powrCol: \
case scanDual: \
REG_SET(port##pin); break; \
case scanCol_powrRow: REG_SET(ddr##pin); REG_SET(port##pin); break; \
} \
break
#define PIN_CASE(pinLetter) \
case pin##pinLetter##0: \
case pin##pinLetter##1: \
case pin##pinLetter##2: \
case pin##pinLetter##3: \
case pin##pinLetter##4: \
case pin##pinLetter##5: \
case pin##pinLetter##6: \
case pin##pinLetter##7
#define PIN_TEST_COL(pin) \
if ( !( pin & ( 1 << ( matrix[0][col] % 10 ) ) \
detectArray[matrix[row][col]]++; \
break
void matrix_pinSetup( uint8_t *matrix )
{
// Setup the variables
uint8_t portA = 0x00;
uint8_t portB = 0x00;
uint8_t portC = 0x00;
uint8_t portD = 0x00;
uint8_t portE = 0x00;
uint8_t portF = 0x00;
uint8_t ddrA = 0x00;
uint8_t ddrB = 0x00;
uint8_t ddrC = 0x00;
uint8_t ddrD = 0x00;
uint8_t ddrE = 0x00;
uint8_t ddrF = 0x00;
// Loop through all the pin assignments, for the initial pin settings
int row, col;
// Rows
for ( row = 1; row < sizeof(matrix); row++ ) {
switch ( matrix[row][col] ) {
PIN_CASE(A):
PIN_SET_ROW(A);
PIN_CASE(B):
PIN_SET_ROW(B);
PIN_CASE(C):
PIN_SET_ROW(C);
PIN_CASE(D):
PIN_SET_ROW(D);
PIN_CASE(E):
PIN_SET_ROW(E);
PIN_CASE(F):
PIN_SET_ROW(F);
default:
continue;
}
}
// Columns
for ( col = 1; col < sizeof(matrix[0]); row++ ) {
switch ( matrix[row][col] ) {
PIN_CASE(A):
PIN_SET_COL(A);
PIN_CASE(B):
PIN_SET_COL(B);
PIN_CASE(C):
PIN_SET_COL(C);
PIN_CASE(D):
PIN_SET_COL(D);
PIN_CASE(E):
PIN_SET_COL(E);
PIN_CASE(F):
PIN_SET_COL(F);
default:
continue;
}
}
// Setting the pins
DDRA = ddrA;
DDRB = ddrB;
DDRC = ddrC;
DDRD = ddrD;
DDRE = ddrE;
DDRF = ddrF;
PORTA = portA;
PORTB = portB;
PORTC = portC;
PORTD = portD;
PORTE = portE;
PORTF = portF;
}
// TODO Proper matrix scanning
void matrix_scan( uint8_t *matrix, uint8_t *detectArray )
{
// Column Scan
#if scanMode == scanCol
uint8_t col = 1;
uint8_t row = 1;
for ( ; col < sizeof(matrix[1]); col++ ) {
switch ( matrix[0][col] / 10 ) {
case 0: // PINA
PIN_TEST_COL(PINA);
case 1: // PINB
PIN_TEST_COL(PINB);
case 2: // PINC
PIN_TEST_COL(PINC);
case 3: // PIND
PIN_TEST_COL(PIND);
case 4: // PINE
PIN_TEST_COL(PINE);
case 5: // PINF
PIN_TEST_COL(PINF);
}
}
#endif
// Row Scan
#if scanMode == scanRow
#endif
// Column Scan, Power Row
#if scanMode == scanCol_powrRow
#endif
// Row Scan, Power Column
#if scanMode == scanRow_powrCol
#endif
// Dual Scan
#if scanMode == scanDual
#endif
}