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- /* Copyright (C) 2016 by Jacob Alexander
- *
- * This file is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This file is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this file. If not, see <http://www.gnu.org/licenses/>.
- */
-
- // ----- Includes -----
-
- // Compiler Includes
- #include <Lib/ScanLib.h>
-
- // Project Includes
- #include <cli.h>
- #include <kll_defs.h>
- #include <led.h>
- #include <print.h>
- #include <macro.h>
- #include <Lib/delay.h>
-
- // Local Includes
- #include "matrix_scan.h"
-
- // Matrix Configuration
- //#include <matrix.h>
-
-
-
- // ----- Defines -----
-
- // ----- Function Declarations -----
-
- // CLI Functions
- void cliFunc_matrixDebug( char* args );
- void cliFunc_matrixInfo( char* args );
- void cliFunc_matrixState( char* args );
-
-
-
- // ----- Variables -----
-
- // Scan Module command dictionary
- 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." );
- CLIDict_Entry( matrixInfo, "Print info about the configured matrix." );
- 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" );
-
- CLIDict_Def( matrixCLIDict, "Matrix Module Commands" ) = {
- CLIDict_Item( matrixDebug ),
- CLIDict_Item( matrixInfo ),
- CLIDict_Item( matrixState ),
- { 0, 0, 0 } // Null entry for dictionary end
- };
-
-
-
- // ----- Functions -----
-
- // TODO
- // - Support multiple ADCs
- // - Channel/Mux setup
- void ADC_setup( ADC adc )
- {
-
- // Enable ADC clock
- #if defined(_mk20dx128_) || defined(_mk20dx128vlf5_)
- SIM_SCGC6 |= SIM_SCGC6_ADC0;
- #elif defined(_mk20dx256_) || defined(_mk20dx256vlh7_)
- SIM_SCGC6 |= SIM_SCGC6_ADC0;
- SIM_SCGC3 |= SIM_SCGC3_ADC1;
- #endif
-
- // Lookup base ADC register
- volatile unsigned int *ADC_SC1A = (unsigned int*)(&ADC_reg_offset_map[adc]);
-
- // Calculate Register offsets
- volatile unsigned int *ADC_CFG1 = (unsigned int*)(&ADC_SC1A) + 0x08;
- volatile unsigned int *ADC_CFG2 = (unsigned int*)(&ADC_SC1A) + 0x0C;
- volatile unsigned int *ADC_SC2 = (unsigned int*)(&ADC_SC1A) + 0x20;
- volatile unsigned int *ADC_SC3 = (unsigned int*)(&ADC_SC1A) + 0x24;
- volatile unsigned int *ADC_PG = (unsigned int*)(&ADC_SC1A) + 0x2C;
- volatile unsigned int *ADC_CLPS = (unsigned int*)(&ADC_SC1A) + 0x38;
- volatile unsigned int *ADC_CLP4 = (unsigned int*)(&ADC_SC1A) + 0x3C;
- volatile unsigned int *ADC_CLP3 = (unsigned int*)(&ADC_SC1A) + 0x40;
- volatile unsigned int *ADC_CLP2 = (unsigned int*)(&ADC_SC1A) + 0x44;
- volatile unsigned int *ADC_CLP1 = (unsigned int*)(&ADC_SC1A) + 0x48;
- volatile unsigned int *ADC_CLP0 = (unsigned int*)(&ADC_SC1A) + 0x4C;
-
- // Make sure calibration has stopped
- *ADC_SC3 = 0;
-
- // - CFG1 -
- // ADIV: (input)/2 divider
- // ADICLK: (bus)/2 divider
- // MODE: 16-bit
- // ADLSMP: Long sample
- //ADC_CFG1 = ADC_CFG1_ADIV(1) | ADC_CFG1_ADICLK(1) | ADC_CFG1_MODE(3) | ADC_CFG1_ADLSMP;
- // ADIV: (input)/8 divider
- *ADC_CFG1 = ADC_CFG1_ADIV(3) | ADC_CFG1_ADICLK(1) | ADC_CFG1_MODE(3) | ADC_CFG1_ADLSMP;
-
- // - CFG2 -
- // ADLSTS: 6 extra ADCK cycles; 10 ADCK cycles total sample time
- //ADC_CFG2 = ADC_CFG2_ADLSTS(2);
- // ADLSTS: 20 extra ADCK cycles; 24 ADCK cycles total sample time
- *ADC_CFG2 = ADC_CFG2_ADLSTS(0);
-
- // - SC2 -
- // REFSEL: Use default 3.3V reference
- *ADC_SC2 = ADC_SC2_REFSEL(0);
- /*
- // Setup VREF to 1.2 V
- VREF_TRM = 0x60;
- VREF_SC = 0xE1; // Enable 1.2 volt ref
- // REFSEL: Use 1.2V reference VREF
- *ADC_SC2 = ADC_SC2_REFSEL(1);
- */
-
- // - SC3 -
- // CAL: Start calibration
- // AVGE: Enable hardware averaging
- // AVGS: 32 samples averaged
- // 32 sample averaging
- *ADC_SC3 = ADC_SC3_CAL | ADC_SC3_AVGE | ADC_SC3_AVGS(3);
-
- // Wait for calibration
- while ( *ADC_SC3 & ADC_SC3_CAL );
-
- // Apply computed calibration offset
- // XXX Note, for single-ended, only the plus side offsets have to be applied
- // For differential the minus side also has to be set as well
-
- __disable_irq(); // Disable interrupts while reading/setting offsets
-
- // Set calibration
- // ADC Plus-Side Gain Register
- // See Section 31.4.7 in the datasheet (mk20dx256vlh7) for details
- uint16_t sum = *ADC_CLPS + *ADC_CLP4 + *ADC_CLP3 + *ADC_CLP2 + *ADC_CLP1 + *ADC_CLP0;
- sum = (sum / 2) | 0x8000;
- *ADC_PG = sum;
-
- __enable_irq(); // Re-enable interrupts
-
- // Start ADC reading loop
- // - SC1A -
- // ADCH: Channel DAD0 (A10)
- // AIEN: Enable interrupt
- //*ADC_SC1A = ADC_SC1_AIEN | ADC_SC1_ADCH(0);
-
- // Enable ADC0 IRQ Vector
- //NVIC_ENABLE_IRQ( IRQ_ADC0 );
- }
-
- // TODO
- // - Enable/Disable strobe detection (IBM)
- // - Setup strobe matrix
- void Strobe_setup()
- {
- }
-
- // TODO
- // - Setup ADCs
- // - Setup ADC muxes
- // - Setup voltage stab
- void Sense_setup()
- {
- }
-
- void Matrix_setup()
- {
- // Register Matrix CLI dictionary
- CLI_registerDictionary( matrixCLIDict, matrixCLIDictName );
-
- // Setup sense
- Sense_setup();
-
- // Setup strobes
- Strobe_setup();
- }
-
- // Scan the matrix for keypresses
- // NOTE: scanNum should be reset to 0 after a USB send (to reset all the counters)
- void Matrix_scan( uint16_t scanNum )
- {
- }
-
-
- // Called by parent scan module whenever the available current changes
- // current - mA
- void Matrix_currentChange( unsigned int current )
- {
- // TODO - Any potential power savings?
- }
-
-
-
- // ----- CLI Command Functions -----
-
- void cliFunc_matrixInfo( char* args )
- {
- }
-
- void cliFunc_matrixDebug( char* args )
- {
- // Parse number from argument
- // NOTE: Only first argument is used
- char* arg1Ptr;
- char* arg2Ptr;
- CLI_argumentIsolation( args, &arg1Ptr, &arg2Ptr );
-
- // Set the matrix debug flag depending on the argument
- // If no argument, set to scan code only
- // If set to T, set to state transition
- switch ( arg1Ptr[0] )
- {
- // T as argument
- case 'T':
- case 't':
- break;
-
- // No argument
- case '\0':
- break;
-
- // Invalid argument
- default:
- return;
- }
- }
-
- void cliFunc_matrixState( char* args )
- {
- }
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