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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
- }
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