408 lines
11 KiB
C
408 lines
11 KiB
C
/* Copyright (C) 2011 by Jacob Alexander
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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// ----- Includes -----
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// AVR Includes
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#include <avr/io.h>
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#include <util/delay.h>
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// Project Includes
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#include <print.h>
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// Local Includes
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#include "matrix_scan.h"
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// Matrix Configuration
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#include <matrix.h>
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// ----- Macros -----
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// -- pinSetup Macros --
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#define REG_SET(reg) reg |= (1 << ( matrix[row*(MAX_ROW_SIZE+1)+col] % 10 ) ) // Modulo 10 for the define offset for each pin set 12 or 32 -> shift of 2
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#define REG_UNSET(reg) reg &= ~(1 << ( matrix[row*(MAX_ROW_SIZE+1)+col] % 10 ) )
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#define PIN_SET(pin,scan,direction) \
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switch ( direction ) { \
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case columnSet: PIN_SET_COL(pin,scan); \
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case rowSet: PIN_SET_ROW(pin,scan); \
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} \
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break
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// TODO Only scanCol_powrRow Tested (and powrRow)
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#define PIN_SET_COL(pin,scan) \
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switch ( scan ) { \
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case scanCol: \
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case scanRow_powrCol: \
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case scanDual: \
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REG_SET(port##pin); break; \
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case scanCol_powrRow: REG_UNSET(ddr##pin); REG_UNSET(DDR##pin); \
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REG_SET(port##pin); REG_SET(PORT##pin); break; \
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case powrRow: break; \
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case powrCol: REG_SET(ddr##pin); REG_SET(DDR##pin); \
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REG_SET(port##pin); REG_SET(PORT##pin); break; \
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} \
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break
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// TODO Only scanCol_powrRow Tested (and powrRow)
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#define PIN_SET_ROW(pin,scan) \
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switch ( scan ) { \
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case scanRow_powrCol: REG_UNSET(ddr##pin); REG_SET(port##pin); break; \
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case scanRow: \
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case scanDual: \
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REG_SET(port##pin); break; \
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case scanCol_powrRow: REG_SET(ddr##pin); REG_SET(DDR##pin); \
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REG_UNSET(port##pin); REG_UNSET(PORT##pin); break; \
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case powrRow: REG_SET(ddr##pin); REG_SET(DDR##pin); \
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REG_SET(port##pin); REG_SET(PORT##pin); break; \
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case powrCol: break; \
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} \
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break
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#define PIN_CASE(pinLetter) \
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case pin##pinLetter##0: \
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case pin##pinLetter##1: \
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case pin##pinLetter##2: \
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case pin##pinLetter##3: \
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case pin##pinLetter##4: \
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case pin##pinLetter##5: \
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case pin##pinLetter##6: \
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case pin##pinLetter##7
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// -- Column Scan Macros --
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#define PIN_TEST_COL(pin) \
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scanCode = matrix[row*(MAX_ROW_SIZE+1)+col]; \
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if ( scanCode && !( pin & ( 1 << ( matrix[0*(MAX_ROW_SIZE+1)+col] % 10 ) ) ) ) \
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{ \
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detectArray[scanCode]++; \
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} \
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break
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// -- Row Scan Macros --
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#define PIN_TEST_ROW(pin) \
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scanCode = matrix[row*(MAX_ROW_SIZE+1)+col]; \
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if ( scanCode && !( pin & ( 1 << ( matrix[row*(MAX_ROW_SIZE+1)+0] % 10 ) ) ) ) \
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{ \
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detectArray[scanCode]++; \
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} \
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break
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// -- Scan Dual Macros --
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#define PIN_DUALTEST_ROW(pin) \
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scanCode = matrix[row*(MAX_ROW_SIZE+1)+col]; \
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if ( scanCode \
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&& !( pin & ( 1 << ( matrix[row*(MAX_ROW_SIZE+1)+0] % 10 ) ) ) \
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&& detectArray[scanCode] & 0x01 ) \
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{ \
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detectArray[scanCode]++; \
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} \
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else \
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{ \
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if ( detectArray[scanCode] & 0x01 ) \
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detectArray[scanCode]--; \
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} \
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break
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// ----- Variables -----
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uint8_t showDebug = 0;
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// Debug Variables for GPIO setting
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uint8_t portA = 0x00;
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uint8_t portB = 0x00;
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uint8_t portC = 0x00;
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uint8_t portD = 0x00;
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uint8_t portE = 0x00;
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uint8_t portF = 0x00;
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uint8_t ddrA = 0x00;
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uint8_t ddrB = 0x00;
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uint8_t ddrC = 0x00;
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uint8_t ddrD = 0x00;
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uint8_t ddrE = 0x00;
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uint8_t ddrF = 0x00;
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// ----- Functions -----
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void matrix_debugPins(void);
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// Pin Setup Debug
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inline void matrix_debugPins()
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{
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char tmpStr[6];
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info_print("Initial Matrix Pin Setup");
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info_print(" ddrA ddrB ddrC ddrD ddrE ddrF");
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print(" ");
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hexToStr_op( ddrA, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
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hexToStr_op( ddrB, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
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hexToStr_op( ddrC, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
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hexToStr_op( ddrD, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
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hexToStr_op( ddrE, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
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hexToStr_op( ddrF, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
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print("\n");
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info_print("portA portB portC portD portE portF");
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print(" ");
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hexToStr_op( portA, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
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hexToStr_op( portB, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
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hexToStr_op( portC, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
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hexToStr_op( portD, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
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hexToStr_op( portE, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
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hexToStr_op( portF, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
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print("\n");
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showDebug++;
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}
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// Column Setup
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inline void matrix_columnSet( uint8_t *matrix, uint8_t scanType, uint16_t startIndex, uint16_t colsToIterate )
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{
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// Calculate the number of pins to iterate over
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uint8_t maxColumns = startIndex + colsToIterate - 1;
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if ( maxColumns > MAX_COL_SIZE )
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maxColumns = MAX_COL_SIZE;
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uint16_t row, col;
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// Columns
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for ( col = startIndex, row = 0; col <= maxColumns; col++ )
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{
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// We can't pass 2D arrays, so just point to the first element and calculate directly
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switch ( matrix[row*(MAX_ROW_SIZE+1)+col] )
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{
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#if defined(__AVR_AT90USB1286__)
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PIN_CASE(A):
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PIN_SET(A, scanType, columnSet);
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#endif
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PIN_CASE(B):
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PIN_SET(B, scanType, columnSet);
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PIN_CASE(C):
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PIN_SET(C, scanType, columnSet);
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PIN_CASE(D):
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PIN_SET(D, scanType, columnSet);
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PIN_CASE(E):
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PIN_SET(E, scanType, columnSet);
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PIN_CASE(F):
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PIN_SET(F, scanType, columnSet);
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default:
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continue;
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}
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}
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}
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// Row Setup
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inline void matrix_rowSet( uint8_t *matrix, uint8_t scanType, uint16_t startIndex, uint8_t rowsToIterate )
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{
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// Calculate the number of pins to iterate over
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uint16_t maxRows = startIndex + rowsToIterate - 1;
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if ( maxRows > MAX_ROW_SIZE )
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maxRows = MAX_ROW_SIZE;
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uint16_t row, col;
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// Rows
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for ( col = 0, row = startIndex; row <= maxRows; row++ )
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{
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// We can't pass 2D arrays, so just point to the first element and calculate directly
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switch ( matrix[row*(MAX_ROW_SIZE+1)+col] )
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{
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#if defined(__AVR_AT90USB1286__)
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PIN_CASE(A):
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PIN_SET(A, scanType, rowSet);
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#endif
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PIN_CASE(B):
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PIN_SET(B, scanType, rowSet);
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PIN_CASE(C):
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PIN_SET(C, scanType, rowSet);
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PIN_CASE(D):
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PIN_SET(D, scanType, rowSet);
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PIN_CASE(E):
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PIN_SET(E, scanType, rowSet);
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PIN_CASE(F):
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PIN_SET(F, scanType, rowSet);
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default:
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continue;
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}
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}
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}
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// Goes through the defined matrix and matrix mode, and sets the initial state of all of the available pins
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void matrix_pinSetup( uint8_t *matrix, uint8_t scanType )
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{
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// Loop through all the pin assignments, for the initial pin settings
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matrix_rowSet ( matrix, scanType, 1, MAX_ROW_SIZE );
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matrix_columnSet( matrix, scanType, 1, MAX_COL_SIZE );
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// Pin Status
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if ( showDebug == 0 ) // Only show once
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{
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matrix_debugPins();
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}
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}
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// Scans the given matrix determined by the scanMode method
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inline void matrix_scan( uint8_t *matrix, uint8_t *detectArray )
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{
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// Loop variables for all modes
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uint16_t col = 1;
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uint16_t row = 1;
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uint16_t scanCode = 0;
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// TODO Only scanCol_powrRow tested
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// Column Scan and Column Scan, Power Row
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#if scanMode == scanCol || scanMode == scanCol_powrRow
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for ( ; row <= MAX_ROW_SIZE; row++ )
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{
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// Power each row separately
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matrix_rowSet( matrix, powrRow, row, 1 );
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for ( col = 1; col <= MAX_COL_SIZE; col++ )
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{
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// Scan over the pins for each of the columns, and using the pin alias to determine which pin to set
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// (e.g. / 10 is for the pin name (A,B,C,etc.) and % 10 is for the position of the pin (A1,A2,etc.))
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switch ( matrix[0*(MAX_ROW_SIZE+1)+col] / 10 )
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{
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#if defined(__AVR_AT90USB1286__)
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case 0: // PINA
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PIN_TEST_COL(PINA);
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#endif
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case 1: // PINB
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PIN_TEST_COL(PINB);
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case 2: // PINC
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PIN_TEST_COL(PINC);
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case 3: // PIND
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PIN_TEST_COL(PIND);
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case 4: // PINE
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PIN_TEST_COL(PINE);
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case 5: // PINF
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PIN_TEST_COL(PINF);
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}
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}
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// Unset the row power
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matrix_rowSet( matrix, scanMode, row, 1 );
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}
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#endif // scanMode
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// Row Scan and Row Scan, Power Row
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#if scanMode == scanRow || scanMode == scanRow_powrCol
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for ( ; col <= MAX_COL_SIZE; col++ )
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{
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// Power each column separately
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matrix_columnSet( matrix, powrCol, col, 1 );
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for ( row = 1; row <= MAX_ROW_SIZE; row++ )
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{
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// Scan over the pins for each of the rows, and using the pin alias to determine which pin to set
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// (e.g. / 10 is for the pin name (A,B,C,etc.) and % 10 is for the position of the pin (A1,A2,etc.))
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switch ( matrix[row*(MAX_ROW_SIZE+1)+0] / 10 )
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{
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#if defined(__AVR_AT90USB1286__)
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case 0: // PINA
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PIN_TEST_ROW(PINA);
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#endif
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case 1: // PINB
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PIN_TEST_ROW(PINB);
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case 2: // PINC
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PIN_TEST_ROW(PINC);
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case 3: // PIND
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PIN_TEST_ROW(PIND);
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case 4: // PINE
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PIN_TEST_ROW(PINE);
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case 5: // PINF
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PIN_TEST_ROW(PINF);
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}
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}
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// Unset the column power
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matrix_columnSet( matrix, scanMode, col, 1 );
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}
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#endif // scanMode
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// Dual Scan
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#if scanMode == scanDual
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// First do a scan of all of the columns, marking each one
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matrix_pinSetup( matrix, scanCol_powrRow, 0, MAX_ROW_SIZE, MAX_COL_SIZE );
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_delay_us( 1 );
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for ( ; row < (MAX_COL_SIZE+1); row++ ) for ( ; col < (MAX_ROW_SIZE+1); col++ )
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{
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// Scan over the pins for each of the columns, and using the pin alias to determine which pin to set
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// (e.g. / 10 is for the pin name (A,B,C,etc.) and % 10 is for the position of the pin (A1,A2,etc.))
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switch ( matrix[0*(MAX_ROW_SIZE+1)+col] / 10 )
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{
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#if defined(__AVR_AT90USB1286__)
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case 0: // PINA
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PIN_TEST_COL(PINA);
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#endif
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case 1: // PINB
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PIN_TEST_COL(PINB);
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case 2: // PINC
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PIN_TEST_COL(PINC);
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case 3: // PIND
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PIN_TEST_COL(PIND);
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case 4: // PINE
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PIN_TEST_COL(PINE);
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case 5: // PINF
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PIN_TEST_COL(PINF);
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}
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}
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// Next, do a scan of all of the rows, clearing any "vague" keys (only detected on row, but not column, or vice-versa)
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// And marking any keys that are detected on the row and column
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matrix_pinSetup( matrix, scanRow_powrCol, 0, MAX_ROW_SIZE, MAX_COL_SIZE );
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_delay_us( 1 );
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col = 1;
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row = 1;
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for ( ; col < (MAX_ROW_SIZE+1); col++ ) for ( ; row < (MAX_COL_SIZE+1); row++ )
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{
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// Scan over the pins for each of the rows, and using the pin alias to determine which pin to set
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// (e.g. / 10 is for the pin name (A,B,C,etc.) and % 10 is for the position of the pin (A1,A2,etc.))
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switch ( matrix[row*(MAX_ROW_SIZE+1)+0] / 10 )
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{
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#if defined(__AVR_AT90USB1286__)
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case 0: // PINA
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PIN_DUALTEST_ROW(PINA);
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#endif
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case 1: // PINB
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PIN_DUALTEST_ROW(PINB);
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case 2: // PINC
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PIN_DUALTEST_ROW(PINC);
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case 3: // PIND
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PIN_DUALTEST_ROW(PIND);
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case 4: // PINE
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PIN_DUALTEST_ROW(PINE);
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case 5: // PINF
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PIN_DUALTEST_ROW(PINF);
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}
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}
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#endif
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}
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