6e4c28ef84
- It's possible to get even more, but this is probably as far as I'll go - PROGMEM is really annoying to use, and makes the code look like ass - Now the Teensy 2++ should have enough RAM to use PartialMap easily
453 lines
12 KiB
C
453 lines
12 KiB
C
/* Copyright (C) 2014 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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// Compiler Includes
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#include <Lib/ScanLib.h>
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// Project Includes
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#include <cli.h>
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#include <led.h>
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#include <print.h>
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#include <macro.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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// ----- Function Declarations -----
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// CLI Functions
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void cliFunc_matrixDebug( char* args );
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void cliFunc_matrixState( char* args );
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// ----- Variables -----
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// Scan Module command dictionary
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CLIDict_Entry( matrixDebug, "Enables matrix debug mode, prints out each scan code." NL "\t\tIf argument \033[35mT\033[0m is given, prints out each scan code state transition." );
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CLIDict_Entry( matrixState, "Prints out the current scan table N times." NL "\t\t \033[1mO\033[0m - Off, \033[1;33mP\033[0m - Press, \033[1;32mH\033[0m - Hold, \033[1;35mR\033[0m - Release, \033[1;31mI\033[0m - Invalid" );
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CLIDict_Def( matrixCLIDict, "Matrix Module Commands" ) = {
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CLIDict_Item( matrixDebug ),
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CLIDict_Item( matrixState ),
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{ 0, 0, 0 } // Null entry for dictionary end
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};
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// Debounce Array
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KeyState Matrix_scanArray[ Matrix_colsNum * Matrix_rowsNum ];
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// Matrix debug flag - If set to 1, for each keypress the scan code is displayed in hex
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// If set to 2, for each key state change, the scan code is displayed along with the state
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uint8_t matrixDebugMode = 0;
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// Matrix State Table Debug Counter - If non-zero display state table after every matrix scan
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uint16_t matrixDebugStateCounter = 0;
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// Matrix Scan Counters
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uint16_t matrixMaxScans = 0;
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uint16_t matrixCurScans = 0;
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uint16_t matrixPrevScans = 0;
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// ----- Functions -----
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// Pin action (Strobe, Sense, Strobe Setup, Sense Setup)
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// NOTE: This function is highly dependent upon the organization of the register map
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// Only guaranteed to work with Freescale MK20 series uCs
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uint8_t Matrix_pin( GPIO_Pin gpio, Type type )
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{
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// Register width is defined as size of a pointer
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unsigned int gpio_offset = gpio.port * 0x40 / sizeof(unsigned int*);
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unsigned int port_offset = gpio.port * 0x1000 / sizeof(unsigned int*) + gpio.pin;
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// Assumes 0x40 between GPIO Port registers and 0x1000 between PORT pin registers
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// See Lib/mk20dx.h
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volatile unsigned int *GPIO_PDDR = (unsigned int*)(&GPIOA_PDDR) + gpio_offset;
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volatile unsigned int *GPIO_PSOR = (unsigned int*)(&GPIOA_PSOR) + gpio_offset;
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volatile unsigned int *GPIO_PCOR = (unsigned int*)(&GPIOA_PCOR) + gpio_offset;
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volatile unsigned int *GPIO_PDIR = (unsigned int*)(&GPIOA_PDIR) + gpio_offset;
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volatile unsigned int *PORT_PCR = (unsigned int*)(&PORTA_PCR0) + port_offset;
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// Operation depends on Type
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switch ( type )
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{
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case Type_StrobeOn:
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*GPIO_PSOR |= (1 << gpio.pin);
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break;
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case Type_StrobeOff:
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*GPIO_PCOR |= (1 << gpio.pin);
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break;
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case Type_StrobeSetup:
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// Set as output pin
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*GPIO_PDDR |= (1 << gpio.pin);
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// Configure pin with slow slew, high drive strength and GPIO mux
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*PORT_PCR = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(1);
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// Enabling open-drain if specified
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switch ( Matrix_type )
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{
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case Config_Opendrain:
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*PORT_PCR |= PORT_PCR_ODE;
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break;
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// Do nothing otherwise
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default:
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break;
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}
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break;
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case Type_Sense:
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return *GPIO_PDIR & (1 << gpio.pin) ? 1 : 0;
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case Type_SenseSetup:
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// Set as input pin
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*GPIO_PDDR &= ~(1 << gpio.pin);
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// Configure pin with passive filter and GPIO mux
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*PORT_PCR = PORT_PCR_PFE | PORT_PCR_MUX(1);
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// Pull resistor config
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switch ( Matrix_type )
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{
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case Config_Pullup:
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*PORT_PCR |= PORT_PCR_PE | PORT_PCR_PS;
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break;
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case Config_Pulldown:
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*PORT_PCR |= PORT_PCR_PE;
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break;
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// Do nothing otherwise
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default:
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break;
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}
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break;
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}
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return 0;
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}
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// Setup GPIO pins for matrix scanning
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void Matrix_setup()
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{
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// Register Matrix CLI dictionary
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CLI_registerDictionary( matrixCLIDict, matrixCLIDictName );
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info_msg("Columns: ");
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printHex( Matrix_colsNum );
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// Setup Strobe Pins
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for ( uint8_t pin = 0; pin < Matrix_colsNum; pin++ )
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{
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Matrix_pin( Matrix_cols[ pin ], Type_StrobeSetup );
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}
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print( NL );
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info_msg("Rows: ");
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printHex( Matrix_rowsNum );
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// Setup Sense Pins
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for ( uint8_t pin = 0; pin < Matrix_rowsNum; pin++ )
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{
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Matrix_pin( Matrix_rows[ pin ], Type_SenseSetup );
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}
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print( NL );
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info_msg("Max Keys: ");
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printHex( Matrix_maxKeys );
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// Clear out Debounce Array
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for ( uint8_t item = 0; item < Matrix_maxKeys; item++ )
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{
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Matrix_scanArray[ item ].prevState = KeyState_Off;
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Matrix_scanArray[ item ].curState = KeyState_Off;
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Matrix_scanArray[ item ].activeCount = 0;
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Matrix_scanArray[ item ].inactiveCount = 0xFFFF; // Start at 'off' steady state
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}
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// Clear scan stats counters
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matrixMaxScans = 0;
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matrixPrevScans = 0;
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}
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void Matrix_keyPositionDebug( KeyPosition pos )
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{
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// Depending on the state, use a different flag + color
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switch ( pos )
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{
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case KeyState_Off:
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print("\033[1mO\033[0m");
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break;
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case KeyState_Press:
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print("\033[1;33mP\033[0m");
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break;
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case KeyState_Hold:
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print("\033[1;32mH\033[0m");
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break;
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case KeyState_Release:
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print("\033[1;35mR\033[0m");
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break;
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case KeyState_Invalid:
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default:
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print("\033[1;31mI\033[0m");
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break;
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}
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}
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// Scan the matrix for keypresses
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// NOTE: scanNum should be reset to 0 after a USB send (to reset all the counters)
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void Matrix_scan( uint16_t scanNum )
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{
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// Increment stats counters
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if ( scanNum > matrixMaxScans ) matrixMaxScans = scanNum;
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if ( scanNum == 0 )
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{
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matrixPrevScans = matrixCurScans;
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matrixCurScans = 0;
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}
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else
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{
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matrixCurScans++;
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}
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// For each strobe, scan each of the sense pins
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for ( uint8_t strobe = 0; strobe < Matrix_colsNum; strobe++ )
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{
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// Strobe Pin
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Matrix_pin( Matrix_cols[ strobe ], Type_StrobeOn );
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// Scan each of the sense pins
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for ( uint8_t sense = 0; sense < Matrix_rowsNum; sense++ )
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{
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// Key position
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uint8_t key = Matrix_colsNum * sense + strobe;
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KeyState *state = &Matrix_scanArray[ key ];
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// If first scan, reset state
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if ( scanNum == 0 )
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{
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// Set previous state, and reset current state
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state->prevState = state->curState;
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state->curState = KeyState_Invalid;
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}
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// Signal Detected
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// Increment count and right shift opposing count
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// This means there is a maximum of scan 13 cycles on a perfect off to on transition
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// (coming from a steady state 0xFFFF off scans)
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// Somewhat longer with switch bounciness
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// The advantage of this is that the count is ongoing and never needs to be reset
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// State still needs to be kept track of to deal with what to send to the Macro module
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if ( Matrix_pin( Matrix_rows[ sense ], Type_Sense ) )
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{
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// Only update if not going to wrap around
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if ( state->activeCount < 0xFFFF ) state->activeCount += 1;
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state->inactiveCount >>= 1;
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}
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// Signal Not Detected
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else
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{
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// Only update if not going to wrap around
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if ( state->inactiveCount < 0xFFFF ) state->inactiveCount += 1;
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state->activeCount >>= 1;
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}
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// Check for state change if it hasn't been set
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// Only check if the minimum number of scans has been met
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// the current state is invalid
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// and either active or inactive count is over the debounce threshold
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if ( state->curState == KeyState_Invalid )
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{
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switch ( state->prevState )
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{
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case KeyState_Press:
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case KeyState_Hold:
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if ( state->activeCount > state->inactiveCount )
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{
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state->curState = KeyState_Hold;
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}
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else
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{
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state->curState = KeyState_Release;
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}
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break;
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case KeyState_Release:
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case KeyState_Off:
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if ( state->activeCount > state->inactiveCount )
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{
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state->curState = KeyState_Press;
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}
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else
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{
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state->curState = KeyState_Off;
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}
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break;
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case KeyState_Invalid:
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default:
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erro_print("Matrix scan bug!! Report me!");
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break;
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}
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// Send keystate to macro module
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Macro_keyState( key, state->curState );
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// Matrix Debug, only if there is a state change
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if ( matrixDebugMode && state->curState != state->prevState )
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{
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// Basic debug output
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if ( matrixDebugMode == 1 && state->curState == KeyState_Press )
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{
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printHex( key );
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print(" ");
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}
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// State transition debug output
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else if ( matrixDebugMode == 2 )
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{
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printHex( key );
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Matrix_keyPositionDebug( state->curState );
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print(" ");
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}
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}
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}
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}
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// Unstrobe Pin
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Matrix_pin( Matrix_cols[ strobe ], Type_StrobeOff );
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}
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// State Table Output Debug
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if ( matrixDebugStateCounter > 0 )
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{
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// Decrement counter
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matrixDebugStateCounter--;
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// Output stats on number of scans being done per USB send
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print( NL );
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info_msg("Max scans: ");
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printHex( matrixMaxScans );
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print( NL );
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info_msg("Previous scans: ");
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printHex( matrixPrevScans );
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print( NL );
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// Output current scan number
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info_msg("Scan Number: ");
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printHex( scanNum );
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print( NL );
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// Display the state info for each key
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print("<key>:<previous state><current state> <active count> <inactive count>");
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for ( uint8_t key = 0; key < Matrix_maxKeys; key++ )
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{
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// Every 4 keys, put a newline
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if ( key % 4 == 0 )
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print( NL );
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print("\033[1m0x");
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printHex_op( key, 2 );
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print("\033[0m");
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print(":");
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Matrix_keyPositionDebug( Matrix_scanArray[ key ].prevState );
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Matrix_keyPositionDebug( Matrix_scanArray[ key ].curState );
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print(" 0x");
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printHex_op( Matrix_scanArray[ key ].activeCount, 4 );
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print(" 0x");
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printHex_op( Matrix_scanArray[ key ].inactiveCount, 4 );
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print(" ");
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}
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print( NL );
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}
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}
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// ----- CLI Command Functions -----
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void cliFunc_matrixDebug ( char* args )
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{
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// Parse number from argument
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// NOTE: Only first argument is used
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char* arg1Ptr;
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char* arg2Ptr;
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CLI_argumentIsolation( args, &arg1Ptr, &arg2Ptr );
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// Set the matrix debug flag depending on the argument
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// If no argument, set to scan code only
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// If set to T, set to state transition
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switch ( arg1Ptr[0] )
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{
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// T as argument
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case 'T':
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case 't':
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matrixDebugMode = matrixDebugMode != 2 ? 2 : 0;
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break;
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// No argument
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case '\0':
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matrixDebugMode = matrixDebugMode != 1 ? 1 : 0;
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break;
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// Invalid argument
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default:
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return;
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}
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print( NL );
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info_msg("Matrix Debug Mode: ");
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printInt8( matrixDebugMode );
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}
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void cliFunc_matrixState ( char* args )
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{
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// Parse number from argument
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// NOTE: Only first argument is used
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char* arg1Ptr;
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char* arg2Ptr;
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CLI_argumentIsolation( args, &arg1Ptr, &arg2Ptr );
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// Default to 1 if no argument is given
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matrixDebugStateCounter = 1;
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if ( arg1Ptr[0] != '\0' )
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{
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matrixDebugStateCounter = (uint16_t)numToInt( arg1Ptr );
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}
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}
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