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controller/Scan/matrix/matrix_scan.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.
*/
// ----- Includes -----
// AVR Includes
#include <avr/io.h>
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#include <util/delay.h>
// Project Includes
#include <print.h>
// Local Includes
#include "matrix_scan.h"
// Matrix Configuration
#include <matrix.h>
// ----- Macros -----
// -- pinSetup Macros --
#define REG_SET(reg) reg |= (1 << ( matrix[row*(MAX_ROW_SIZE+1)+col] % 10 ) )
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#define PIN_SET_COL(pin,scan) \
switch ( scan ) { \
case scanCol: \
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case scanRow_powrCol: \
case scanDual: \
REG_SET(port##pin); break; \
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case scanCol_powrRow: REG_SET(ddr##pin); REG_SET(port##pin); break; \
} \
break
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#define PIN_SET_ROW(pin,scan) \
switch ( scan ) { \
case scanRow: \
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case scanCol_powrRow: \
case scanDual: \
REG_SET(port##pin); break; \
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case scanRow_powrCol: 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
// -- Column Scan Macros --
#define PIN_TEST_COL(pin) \
scanCode = matrix[row*(MAX_ROW_SIZE+1)+col]; \
if ( scanCode && !( pin & ( 1 << ( matrix[0*(MAX_ROW_SIZE+1)+col] % 10 ) ) ) ) \
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{ \
detectArray[scanCode]++; \
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} \
break
// -- Row Scan Macros --
#define PIN_TEST_ROW(pin) \
scanCode = matrix[row*(MAX_ROW_SIZE+1)+col]; \
if ( scanCode && !( pin & ( 1 << ( matrix[row*(MAX_ROW_SIZE+1)+0] % 10 ) ) ) ) \
detectArray[scanCode]++; \
break
// -- Scan Dual Macros --
#define PIN_DUALTEST_ROW(pin) \
scanCode = matrix[row*(MAX_ROW_SIZE+1)+col]; \
if ( scanCode \
&& !( pin & ( 1 << ( matrix[row*(MAX_ROW_SIZE+1)+0] % 10 ) ) ) \
&& detectArray[scanCode] & 0x01 ) \
{ \
detectArray[scanCode]++; \
} \
else \
{ \
if ( detectArray[scanCode] & 0x01 ) \
detectArray[scanCode]--; \
} \
break
// ----- Variables -----
// ----- Functions -----
// 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 )
{
// 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
uint16_t row, col;
// Rows
for ( col = 0, row = 1; row < MAX_COL_SIZE + 1; row++ )
{
// We can't pass 2D arrays, so just point to the first element and calculate directly
switch ( matrix[row*(MAX_ROW_SIZE+1)+col] )
{
PIN_CASE(A):
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PIN_SET_ROW(A, scanType);
PIN_CASE(B):
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PIN_SET_ROW(B, scanType);
PIN_CASE(C):
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PIN_SET_ROW(C, scanType);
PIN_CASE(D):
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PIN_SET_ROW(D, scanType);
PIN_CASE(E):
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PIN_SET_ROW(E, scanType);
PIN_CASE(F):
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PIN_SET_ROW(F, scanType);
default:
continue;
}
}
// Columns
for ( col = 1, row = 0; col < (MAX_ROW_SIZE+1) + 1; col++ )
{
// We can't pass 2D arrays, so just point to the first element and calculate directly
switch ( matrix[row*(MAX_ROW_SIZE+1)+col] )
{
PIN_CASE(A):
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PIN_SET_COL(A, scanType);
PIN_CASE(B):
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PIN_SET_COL(B, scanType);
PIN_CASE(C):
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PIN_SET_COL(C, scanType);
PIN_CASE(D):
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PIN_SET_COL(D, scanType);
PIN_CASE(E):
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PIN_SET_COL(E, scanType);
PIN_CASE(F):
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PIN_SET_COL(F, scanType);
default:
continue;
}
}
// Pin Status
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if ( scanType == scanMode )
{
char tmpStr[6];
info_print("Initial Matrix Pin Setup");
info_print(" ddrA ddrB ddrC ddrD ddrE ddrF");
print(" ");
hexToStr_op( ddrA, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
hexToStr_op( ddrB, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
hexToStr_op( ddrC, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
hexToStr_op( ddrD, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
hexToStr_op( ddrE, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
hexToStr_op( ddrF, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
print("\n");
info_print("portA portB portC portD portE portF");
print(" ");
hexToStr_op( portA, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
hexToStr_op( portB, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
hexToStr_op( portC, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
hexToStr_op( portD, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
hexToStr_op( portE, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
hexToStr_op( portF, tmpStr, 2 ); dPrintStrs( " 0x", tmpStr );
print("\n");
int8ToStr( scanType, tmpStr );
}
// Setting the pins
#if defined(__AVR_AT90USB1286__)
DDRA = ddrA;
#endif
DDRB = ddrB;
DDRC = ddrC;
DDRD = ddrD;
DDRE = ddrE;
DDRF = ddrF;
#if defined(__AVR_AT90USB1286__)
PORTA = portA;
#endif
PORTB = portB;
PORTC = portC;
PORTD = portD;
PORTE = portE;
PORTF = portF;
}
// Scans the given matrix determined by the scanMode method
inline void matrix_scan( uint8_t *matrix, uint8_t *detectArray )
{
// Loop variables for all modes
uint16_t col = 1;
uint16_t row = 1;
uint16_t scanCode = 0;
// Column Scan and Column Scan, Power Row
#if scanMode == scanCol || scanMode == scanCol_powrRow
for ( ; row < (MAX_COL_SIZE+1); row++ ) for ( ; col < (MAX_ROW_SIZE+1); col++ )
{
// Scan over the pins for each of the columns, and using the pin alias to determine which pin to set
// (e.g. / 10 is for the pin name (A,B,C,etc.) and % 10 is for the position of the pin (A1,A2,etc.))
switch ( matrix[0*(MAX_ROW_SIZE+1)+col] / 10 )
{
#if defined(__AVR_AT90USB1286__)
case 0: // PINA
PIN_TEST_COL(PINA);
#endif
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 // scanMode
// Row Scan and Row Scan, Power Row
#if scanMode == scanRow || scanMode == scanRow_powrCol
for ( ; col < (MAX_ROW_SIZE+1); col++ ) for ( ; row < (MAX_COL_SIZE+1); row++ )
{
// Scan over the pins for each of the rows, and using the pin alias to determine which pin to set
// (e.g. / 10 is for the pin name (A,B,C,etc.) and % 10 is for the position of the pin (A1,A2,etc.))
switch ( matrix[row*(MAX_ROW_SIZE+1)+0] / 10 )
{
#if defined(__AVR_AT90USB1286__)
case 0: // PINA
PIN_TEST_ROW(PINA);
#endif
case 1: // PINB
PIN_TEST_ROW(PINB);
case 2: // PINC
PIN_TEST_ROW(PINC);
case 3: // PIND
PIN_TEST_ROW(PIND);
case 4: // PINE
PIN_TEST_ROW(PINE);
case 5: // PINF
PIN_TEST_ROW(PINF);
}
}
#endif // scanMode
// Dual Scan
#if scanMode == scanDual
// First do a scan of all of the columns, marking each one
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matrix_pinSetup( matrix, scanCol_powrRow );
_delay_us( 1 );
for ( ; row < (MAX_COL_SIZE+1); row++ ) for ( ; col < (MAX_ROW_SIZE+1); col++ )
{
// Scan over the pins for each of the columns, and using the pin alias to determine which pin to set
// (e.g. / 10 is for the pin name (A,B,C,etc.) and % 10 is for the position of the pin (A1,A2,etc.))
switch ( matrix[0*(MAX_ROW_SIZE+1)+col] / 10 )
{
#if defined(__AVR_AT90USB1286__)
case 0: // PINA
PIN_TEST_COL(PINA);
#endif
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);
}
}
// Next, do a scan of all of the rows, clearing any "vague" keys (only detected on row, but not column, or vice-versa)
// And marking any keys that are detected on the row and column
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matrix_pinSetup( matrix, scanRow_powrCol );
_delay_us( 1 );
col = 1;
row = 1;
for ( ; col < (MAX_ROW_SIZE+1); col++ ) for ( ; row < (MAX_COL_SIZE+1); row++ )
{
// Scan over the pins for each of the rows, and using the pin alias to determine which pin to set
// (e.g. / 10 is for the pin name (A,B,C,etc.) and % 10 is for the position of the pin (A1,A2,etc.))
switch ( matrix[row*(MAX_ROW_SIZE+1)+0] / 10 )
{
#if defined(__AVR_AT90USB1286__)
case 0: // PINA
PIN_DUALTEST_ROW(PINA);
#endif
case 1: // PINB
PIN_DUALTEST_ROW(PINB);
case 2: // PINC
PIN_DUALTEST_ROW(PINC);
case 3: // PIND
PIN_DUALTEST_ROW(PIND);
case 4: // PINE
PIN_DUALTEST_ROW(PINE);
case 5: // PINF
PIN_DUALTEST_ROW(PINF);
}
}
#endif
}