3d98028679
- Added a print macro for colourful convenience - Removed the usb_keymap variable as it is no longer needed - Changed usb_dirty to keymap_change (more accurate description) - Removed the dumpkeys function and now detect key changes much sooner as well as displaying error messages more often - Added a warming up information message and removed its error status (as it's not an error)
1033 lines
22 KiB
C
1033 lines
22 KiB
C
/* Copyright (C) 2011-2013 by Joseph Makuch
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* Additions by Jacob Alexander (2013)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3.0 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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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 <led.h>
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#include <print.h>
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// Local Includes
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#include "scan_loop.h"
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// ----- Defines -----
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// TODO dfj defines...needs commenting and maybe some cleaning...
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#define MAX_PRESS_DELTA_MV 470
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#define THRESHOLD_MV (MAX_PRESS_DELTA_MV >> 1)
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//(2560 / (0x3ff/2)) ~= 5
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#define MV_PER_ADC 5
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// 5
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#define THRESHOLD (THRESHOLD_MV / MV_PER_ADC)
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#define BUMP_DETECTION 0
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#define BUMP_THRESHOLD 0x50
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#define BUMP_REST_US 1200
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#define STROBE_SETTLE 1
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#define MUX_SETTLE 1
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#define TEST_KEY_STROBE (0x05)
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#define TEST_KEY_MASK (1 << 0)
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#define ADHSM 7
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#define RIGHT_JUSTIFY 0
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#define LEFT_JUSTIFY (0xff)
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// set left or right justification here:
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#define JUSTIFY_ADC RIGHT_JUSTIFY
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#define ADLAR_MASK (1 << ADLAR)
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#ifdef JUSTIFY_ADC
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#define ADLAR_BITS ((ADLAR_MASK) & (JUSTIFY_ADC))
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#else // defaults to right justification.
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#define ADLAR_BITS 0
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#endif
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// full muxmask
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#define FULL_MUX_MASK ((1 << MUX0) | (1 << MUX1) | (1 << MUX2) | (1 << MUX3) | (1 << MUX4))
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// F0-f7 pins only muxmask.
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#define MUX_MASK ((1 << MUX0) | (1 << MUX1) | (1 << MUX2))
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// Strobe Masks
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#define D_MASK (0xff)
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#define E_MASK (0x03)
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#define C_MASK (0xff)
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// set ADC clock prescale
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#define PRESCALE_MASK ((1 << ADPS0) | (1 << ADPS1) | (1 << ADPS2))
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#define PRESCALE_SHIFT (ADPS0)
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#define PRESCALE 3
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// TODO Remove this define when unnecessary -HaaTa
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#define STROBE_LINES 16
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#define MUXES_COUNT 8
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#define MUXES_COUNT_XSHIFT 3
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#define WARMUP_LOOPS ( 1024 )
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#define WARMUP_STOP (WARMUP_LOOPS - 1)
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#define SAMPLES 10
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#define SAMPLE_OFFSET ((SAMPLES) - MUXES_COUNT)
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#define SAMPLE_CONTROL 3
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// TODO Figure out calculation or best way to determine at startup -HaaTa
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//#define DEFAULT_KEY_BASE 0xc8
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#define DEFAULT_KEY_BASE 0x95
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#define KEY_COUNT ((STROBE_LINES) * (MUXES_COUNT))
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#define RECOVERY_CONTROL 1
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#define RECOVERY_SOURCE 0
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#define RECOVERY_SINK 2
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#define ON 1
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#define OFF 0
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// mix in 1/4 of the current average to the running average. -> (@mux_mix = 2)
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#define MUX_MIX 2
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#define IDLE_COUNT_MASK 0xff
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#define IDLE_COUNT_SHIFT 8
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// av = (av << shift) - av + sample; av >>= shift
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// e.g. 1 -> (av + sample) / 2 simple average of new and old
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// 2 -> (3 * av + sample) / 4 i.e. 3:1 mix of old to new.
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// 3 -> (7 * av + sample) / 8 i.e. 7:1 mix of old to new.
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#define KEYS_AVERAGES_MIX_SHIFT 3
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// ----- Macros -----
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// Make sure we haven't overflowed the buffer
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#define bufferAdd(byte) \
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if ( KeyIndex_BufferUsed < KEYBOARD_BUFFER ) \
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KeyIndex_Buffer[KeyIndex_BufferUsed++] = byte
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// Select mux
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#define SET_FULL_MUX(X) ((ADMUX) = (((ADMUX) & ~(FULL_MUX_MASK)) | ((X) & (FULL_MUX_MASK))))
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// ----- Variables -----
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// Buffer used to inform the macro processing module which keys have been detected as pressed
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volatile uint8_t KeyIndex_Buffer[KEYBOARD_BUFFER];
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volatile uint8_t KeyIndex_BufferUsed;
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// TODO dfj variables...needs cleaning up and commenting
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volatile uint16_t full_av = 0;
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uint8_t ze_strober = 0;
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uint16_t samples [SAMPLES];
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uint16_t adc_mux_averages [MUXES_COUNT];
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uint16_t adc_strobe_averages[STROBE_LINES];
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uint8_t cur_keymap[STROBE_LINES];
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uint8_t keymap_change;
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uint16_t threshold = 0x25; // HaaTa Hack -TODO
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//uint16_t threshold = 0x16; // HaaTa Hack -TODO
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//uint16_t threshold = THRESHOLD;
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uint8_t column = 0;
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uint16_t keys_averages_acc[KEY_COUNT];
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uint16_t keys_averages[KEY_COUNT];
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uint8_t full_samples[KEY_COUNT];
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// TODO: change this to 'booting', then count down.
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uint16_t boot_count = 0;
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uint16_t idle_count = 0;
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uint8_t idle = 1;
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uint8_t error = 0;
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uint16_t error_data = 0;
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uint16_t mux_averages[MUXES_COUNT];
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uint16_t strobe_averages[STROBE_LINES];
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uint8_t dump_count = 0;
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uint16_t db_delta = 0;
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uint8_t db_sample = 0;
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uint16_t db_threshold = 0;
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// ----- Function Declarations -----
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void dump( void );
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void recovery( uint8_t on );
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int sampleColumn( uint8_t column );
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void setup_ADC( void );
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void strobe_w( uint8_t strobe_num );
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uint8_t testColumn( uint8_t strobe );
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// ----- Functions -----
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// Initial setup for cap sense controller
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inline void scan_setup()
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{
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// TODO dfj code...needs cleanup + commenting...
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setup_ADC();
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DDRC = C_MASK;
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PORTC = 0;
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DDRD = D_MASK;
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PORTD = 0;
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DDRE = E_MASK;
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PORTE = 0 ;
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// TODO all this code should probably be in scan_resetKeyboard
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for (int i=0; i < STROBE_LINES; ++i) {
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cur_keymap[i] = 0;
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}
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for(int i=0; i < MUXES_COUNT; ++i) {
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adc_mux_averages[i] = 0x20; // experimentally determined.
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}
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for(int i=0; i < STROBE_LINES; ++i) {
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adc_strobe_averages[i] = 0x20; // yup.
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}
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for(int i=0; i < KEY_COUNT; ++i) {
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keys_averages[i] = DEFAULT_KEY_BASE;
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keys_averages_acc[i] = (DEFAULT_KEY_BASE);
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}
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/** warm things up a bit before we start collecting data, taking real samples. */
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for(uint8_t i = 0; i < STROBE_LINES; ++i) {
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sampleColumn(i);
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}
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// Reset the keyboard before scanning, we might be in a wierd state
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// Also sets the KeyIndex_BufferUsed to 0
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scan_resetKeyboard();
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}
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// Main Detection Loop
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// This is where the important stuff happens
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inline uint8_t scan_loop()
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{
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// TODO dfj code...needs commenting + cleanup...
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uint8_t strober = 0;
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uint32_t full_av_acc = 0;
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for (strober = 0; strober < STROBE_LINES; ++strober)
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{
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uint8_t tries = 1;
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while ( tries++ && sampleColumn( strober ) ) { tries &= 0x7; } // don't waste this one just because the last one was poop.
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column = testColumn(strober);
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idle |= column; // if column has any pressed keys, then we are not idle.
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if( column != cur_keymap[strober] && ( boot_count >= WARMUP_LOOPS ) )
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{
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cur_keymap[strober] = column;
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keymap_change = 1;
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// The keypresses on this strobe are now know, send them right away
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for ( uint8_t mux = 0; mux < MUXES_COUNT; ++mux )
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{
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if ( column & (1 << mux) )
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{
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uint8_t key = (strober << MUXES_COUNT_XSHIFT) + mux;
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// Add to the Macro processing buffer
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// Automatically handles converting to a USB code and sending off to the PC
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//bufferAdd( key );
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printHex( key );
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print("\n");
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}
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}
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}
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idle |= keymap_change; // if any keys have changed inc. released, then we are not idle.
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if ( error == 0x50 )
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{
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error_data |= (((uint16_t)strober) << 12);
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}
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uint8_t strobe_line = strober << MUXES_COUNT_XSHIFT;
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for ( int i = 0; i < MUXES_COUNT; ++i )
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{
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// discard sketchy low bit, and meaningless high bits.
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uint8_t sample = samples[SAMPLE_OFFSET + i] >> 1;
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full_samples[strobe_line + i] = sample;
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keys_averages_acc[strobe_line + i] += sample;
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}
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strobe_averages[strober] = 0;
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for ( uint8_t i = SAMPLE_OFFSET; i < ( SAMPLE_OFFSET + MUXES_COUNT ); ++i )
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{
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full_av_acc += (samples[i]);
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#ifdef COLLECT_STROBE_AVERAGES
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mux_averages[i - SAMPLE_OFFSET] += samples[i];
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strobe_averages[strober] += samples[i];
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#endif
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}
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#ifdef COLLECT_STROBE_AVERAGES
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adc_strobe_averages[strober] += strobe_averages[strober] >> 3;
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adc_strobe_averages[strober] >>= 1;
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/** test if we went negative. */
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if ( ( adc_strobe_averages[strober] & 0xFF00 ) && ( boot_count >= WARMUP_LOOPS ) )
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{
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error = 0xf; error_data = adc_strobe_averages[strober];
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}
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#endif
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} // for strober
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#ifdef VERIFY_TEST_PAD
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// verify test key is not down.
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if ( ( cur_keymap[TEST_KEY_STROBE] & TEST_KEY_MASK ) )
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{
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error = 0x05;
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error_data = cur_keymap[TEST_KEY_STROBE] << 8;
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error_data += full_samples[TEST_KEY_STROBE * 8];
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//threshold++;
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}
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#endif
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#ifdef COLLECT_STROBE_AVERAGES
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// calc mux averages.
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if ( boot_count < WARMUP_LOOPS )
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{
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full_av += (full_av_acc >> (7));
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full_av >>= 1;
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full_av_acc = 0;
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for ( int i = 0; i < MUXES_COUNT; ++i )
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{
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adc_mux_averages[i] = (adc_mux_averages[i] << MUX_MIX) - adc_mux_averages[i];
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adc_mux_averages[i] += (mux_averages[i] >> 4);
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adc_mux_averages[i] >>= MUX_MIX;
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mux_averages[i] = 0;
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}
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}
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#endif
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/** aggregate if booting, or if idle;
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* else, if not booting, check for dirty USB.
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* */
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idle_count++;
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idle_count &= IDLE_COUNT_MASK;
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// Warm up voltage references
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if ( boot_count < WARMUP_LOOPS )
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{
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boot_count++;
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switch ( boot_count )
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{
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// First loop
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case 1:
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// Show msg at first iteration only
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info_msg("Warming up the voltage references");
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break;
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// Middle iterations
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case 300:
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case 600:
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case 900:
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case 1200:
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print(".");
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break;
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// Last loop
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case WARMUP_STOP:
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print("\n");
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info_msg("Warmup finished using ");
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printInt16( WARMUP_LOOPS );
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print(" iterations\n");
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break;
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}
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}
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else
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{
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// Reset accumulators and idle flag/counter
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if ( keymap_change )
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{
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for ( uint8_t c = 0; c < KEY_COUNT; ++c ) { keys_averages_acc[c] = 0; }
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idle_count = 0;
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idle = 0;
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keymap_change = 0;
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}
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if ( !idle_count )
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{
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if( idle )
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{
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// aggregate
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for ( uint8_t i = 0; i < KEY_COUNT; ++i )
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{
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uint16_t acc = keys_averages_acc[i] >> IDLE_COUNT_SHIFT;
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uint32_t av = keys_averages[i];
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av = (av << KEYS_AVERAGES_MIX_SHIFT) - av + acc;
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av >>= KEYS_AVERAGES_MIX_SHIFT;
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keys_averages[i] = av;
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keys_averages_acc[i] = 0;
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}
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}
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if ( boot_count >= WARMUP_LOOPS )
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{
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dump();
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}
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sampleColumn(0x0); // to resync us if we dumped a mess 'o text.
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}
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}
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// Error case, should not occur in normal operation
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if ( error )
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{
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erro_msg("Problem detected... ");
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// Keymap scan debug
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for ( uint8_t i = 0; i < STROBE_LINES; ++i )
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{
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printHex(cur_keymap[i]);
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print(" ");
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}
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print(" : ");
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printHex(error);
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error = 0;
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print(" : ");
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printHex(error_data);
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error_data = 0;
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// Display keymaps and other debug information if warmup completede
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if ( boot_count >= WARMUP_LOOPS )
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{
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dump();
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}
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}
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// Return non-zero if macro and USB processing should be delayed
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// Macro processing will always run if returning 0
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// USB processing only happens once the USB send timer expires, if it has not, scan_loop will be called
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// after the macro processing has been completed
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return 0;
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}
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// Reset Keyboard
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void scan_resetKeyboard( void )
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{
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// Empty buffer, now that keyboard has been reset
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KeyIndex_BufferUsed = 0;
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}
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// Send data to keyboard
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// NOTE: Only used for converters, since the scan module shouldn't handle sending data in a controller
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uint8_t scan_sendData( uint8_t dataPayload )
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{
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return 0;
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}
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// Reset/Hold keyboard
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// NOTE: Only used for converters, not needed for full controllers
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void scan_lockKeyboard( void )
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{
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}
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// NOTE: Only used for converters, not needed for full controllers
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void scan_unlockKeyboard( void )
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{
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}
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// Signal KeyIndex_Buffer that it has been properly read
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// NOTE: Only really required for implementing "tricks" in converters for odd protocols
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void scan_finishedWithBuffer( uint8_t sentKeys )
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{
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// Convenient place to clear the KeyIndex_Buffer
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KeyIndex_BufferUsed = 0;
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return;
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}
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// Signal KeyIndex_Buffer that it has been properly read and sent out by the USB module
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// NOTE: Only really required for implementing "tricks" in converters for odd protocols
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void scan_finishedWithUSBBuffer( uint8_t sentKeys )
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{
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return;
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}
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void _delay_loop( uint8_t __count )
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{
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__asm__ volatile (
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"1: dec %0" "\n\t"
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"brne 1b"
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: "=r" (__count)
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: "0" (__count)
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);
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}
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void setup_ADC()
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{
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// disable adc digital pins.
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DIDR1 |= (1 << AIN0D) | (1<<AIN1D); // set disable on pins 1,0.
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DDRF = 0x0;
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PORTF = 0x0;
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uint8_t mux = 0 & 0x1f; // 0 == first. // 0x1e = 1.1V ref.
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// 0 = external aref 1,1 = 2.56V internal ref
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uint8_t aref = ((1 << REFS1) | (1 << REFS0)) & ((1 << REFS1) | (1 << REFS0));
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uint8_t adate = (1 << ADATE) & (1 << ADATE); // trigger enable
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uint8_t trig = 0 & ((1 << ADTS0) | (1 << ADTS1) | (1 << ADTS2)); // 0 = free running
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// ps2, ps1 := /64 ( 2^6 ) ps2 := /16 (2^4), ps1 := 4, ps0 :=2, PS1,PS0 := 8 (2^8)
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uint8_t prescale = ( ((PRESCALE) << PRESCALE_SHIFT) & PRESCALE_MASK ); // 001 == 2^1 == 2
|
|
uint8_t hispeed = (1 << ADHSM);
|
|
uint8_t en_mux = (1 << ACME);
|
|
|
|
ADCSRA = (1 << ADEN) | prescale; // ADC enable
|
|
|
|
// select ref.
|
|
//ADMUX |= ((1 << REFS1) | (1 << REFS0)); // 2.56 V internal.
|
|
//ADMUX |= ((1 << REFS0) ); // Vcc with external cap.
|
|
//ADMUX &= ~((1 << REFS1) | (1 << REFS0)); // 0,0 : aref.
|
|
ADMUX = aref | mux | ADLAR_BITS;
|
|
|
|
// set free-running
|
|
ADCSRA |= adate; // trigger enable
|
|
ADCSRB = en_mux | hispeed | trig | (ADCSRB & ~((1 << ADTS0) | (1 << ADTS1) | (1 << ADTS2))); // trigger select free running
|
|
|
|
ADCSRA |= (1 << ADEN); // ADC enable
|
|
ADCSRA |= (1 << ADSC); // start conversions q
|
|
}
|
|
|
|
|
|
void recovery( uint8_t on )
|
|
{
|
|
DDRB |= (1 << RECOVERY_CONTROL);
|
|
PORTB &= ~(1 << RECOVERY_SINK); // SINK always zero
|
|
DDRB &= ~(1 << RECOVERY_SOURCE); // SOURCE high imp
|
|
|
|
if ( on )
|
|
{
|
|
// set strobes to sink to gnd.
|
|
DDRC |= C_MASK;
|
|
DDRD |= D_MASK;
|
|
DDRE |= E_MASK;
|
|
|
|
PORTC &= ~C_MASK;
|
|
PORTD &= ~D_MASK;
|
|
PORTE &= ~E_MASK;
|
|
|
|
DDRB |= (1 << RECOVERY_SINK); // SINK pull
|
|
PORTB |= (1 << RECOVERY_CONTROL);
|
|
PORTB |= (1 << RECOVERY_SOURCE); // SOURCE high
|
|
DDRB |= (1 << RECOVERY_SOURCE);
|
|
}
|
|
else
|
|
{
|
|
PORTB &= ~(1 << RECOVERY_CONTROL);
|
|
DDRB &= ~(1 << RECOVERY_SOURCE);
|
|
PORTB &= ~(1 << RECOVERY_SOURCE); // SOURCE low
|
|
DDRB &= ~(1 << RECOVERY_SINK); // SINK high-imp
|
|
}
|
|
}
|
|
|
|
|
|
void hold_sample( uint8_t on )
|
|
{
|
|
if ( !on )
|
|
{
|
|
PORTB |= (1 << SAMPLE_CONTROL);
|
|
DDRB |= (1 << SAMPLE_CONTROL);
|
|
}
|
|
else
|
|
{
|
|
DDRB |= (1 << SAMPLE_CONTROL);
|
|
PORTB &= ~(1 << SAMPLE_CONTROL);
|
|
}
|
|
}
|
|
|
|
|
|
void strobe_w( uint8_t strobe_num )
|
|
{
|
|
PORTC &= ~(C_MASK);
|
|
PORTD &= ~(D_MASK);
|
|
PORTE &= ~(E_MASK);
|
|
|
|
#ifdef SHORT_C
|
|
//strobe_num = 15 - strobe_num;
|
|
#endif
|
|
/*
|
|
printHex( strobe_num );
|
|
print(" ");
|
|
strobe_num = 9 - strobe_num;
|
|
printHex( strobe_num );
|
|
print("\n");
|
|
*/
|
|
|
|
switch(strobe_num) {
|
|
|
|
// XXX Kishsaver strobe (note that D0, D1 are not used)
|
|
case 0: PORTD |= (1 << 0); break;
|
|
case 1: PORTD |= (1 << 1); break;
|
|
case 2: PORTD |= (1 << 2); break;
|
|
case 3: PORTD |= (1 << 3); break;
|
|
case 4: PORTD |= (1 << 4); break;
|
|
case 5: PORTD |= (1 << 5); break;
|
|
|
|
// TODO REMOVEME
|
|
case 6: PORTD |= (1 << 6); break;
|
|
case 7: PORTD |= (1 << 7); break;
|
|
case 8: PORTE |= (1 << 0); break;
|
|
case 9: PORTE |= (1 << 1); break;
|
|
//case 15: PORTC |= (1 << 5); break; // Test strobe on kishsaver
|
|
|
|
#if 0
|
|
// XXX Kishsaver strobe (note that D0, D1 are not used)
|
|
case 0: PORTD |= (1 << 2); break;
|
|
case 1: PORTD |= (1 << 3); break;
|
|
case 2: PORTD |= (1 << 4); break;
|
|
case 3: PORTD |= (1 << 5); break;
|
|
|
|
// TODO REMOVEME
|
|
case 4: PORTD |= (1 << 6); break;
|
|
case 5: PORTD |= (1 << 7); break;
|
|
case 6: PORTE |= (1 << 0); break;
|
|
case 7: PORTE |= (1 << 1); break;
|
|
case 15: PORTC |= (1 << 5); break; // Test strobe on kishsaver
|
|
#endif
|
|
/*
|
|
#ifdef ALL_D
|
|
|
|
case 6: PORTD |= (1 << 6); break;
|
|
case 7: PORTD |= (1 << 7); break;
|
|
|
|
case 8: PORTC |= (1 << 0); break;
|
|
case 9: PORTC |= (1 << 1); break;
|
|
case 10: PORTC |= (1 << 2); break;
|
|
case 11: PORTC |= (1 << 3); break;
|
|
case 12: PORTC |= (1 << 4); break;
|
|
case 13: PORTC |= (1 << 5); break;
|
|
case 14: PORTC |= (1 << 6); break;
|
|
case 15: PORTC |= (1 << 7); break;
|
|
|
|
case 16: PORTE |= (1 << 0); break;
|
|
case 17: PORTE |= (1 << 1); break;
|
|
|
|
#else
|
|
#ifdef SHORT_D
|
|
|
|
case 6: PORTE |= (1 << 0); break;
|
|
case 7: PORTE |= (1 << 1); break;
|
|
|
|
case 8: PORTC |= (1 << 0); break;
|
|
case 9: PORTC |= (1 << 1); break;
|
|
case 10: PORTC |= (1 << 2); break;
|
|
case 11: PORTC |= (1 << 3); break;
|
|
case 12: PORTC |= (1 << 4); break;
|
|
case 13: PORTC |= (1 << 5); break;
|
|
case 14: PORTC |= (1 << 6); break;
|
|
case 15: PORTC |= (1 << 7); break;
|
|
|
|
#else
|
|
#ifdef SHORT_C
|
|
|
|
case 6: PORTD |= (1 << 6); break;
|
|
case 7: PORTD |= (1 << 7); break;
|
|
|
|
case 8: PORTE |= (1 << 0); break;
|
|
case 9: PORTE |= (1 << 1); break;
|
|
|
|
case 10: PORTC |= (1 << 0); break;
|
|
case 11: PORTC |= (1 << 1); break;
|
|
case 12: PORTC |= (1 << 2); break;
|
|
case 13: PORTC |= (1 << 3); break;
|
|
case 14: PORTC |= (1 << 4); break;
|
|
case 15: PORTC |= (1 << 5); break;
|
|
|
|
case 16: PORTC |= (1 << 6); break;
|
|
case 17: PORTC |= (1 << 7); break;
|
|
|
|
#endif
|
|
#endif
|
|
#endif
|
|
*/
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
|
|
#if 0 // New code from dfj -> still needs redoing for kishsaver and autodetection of strobes
|
|
#ifdef SHORT_C
|
|
strobe_num = 15 - strobe_num;
|
|
#endif
|
|
|
|
#ifdef SINGLE_COLUMN_TEST
|
|
strobe_num = 5;
|
|
#endif
|
|
|
|
switch(strobe_num) {
|
|
|
|
case 0: PORTD |= (1 << 0); DDRD &= ~(1 << 0); break;
|
|
case 1: PORTD |= (1 << 1); DDRD &= ~(1 << 1); break;
|
|
case 2: PORTD |= (1 << 2); DDRD &= ~(1 << 2); break;
|
|
case 3: PORTD |= (1 << 3); DDRD &= ~(1 << 3); break;
|
|
case 4: PORTD |= (1 << 4); DDRD &= ~(1 << 4); break;
|
|
case 5: PORTD |= (1 << 5); DDRD &= ~(1 << 5); break;
|
|
|
|
#ifdef ALL_D
|
|
|
|
case 6: PORTD |= (1 << 6); break;
|
|
case 7: PORTD |= (1 << 7); break;
|
|
|
|
case 8: PORTC |= (1 << 0); break;
|
|
case 9: PORTC |= (1 << 1); break;
|
|
case 10: PORTC |= (1 << 2); break;
|
|
case 11: PORTC |= (1 << 3); break;
|
|
case 12: PORTC |= (1 << 4); break;
|
|
case 13: PORTC |= (1 << 5); break;
|
|
case 14: PORTC |= (1 << 6); break;
|
|
case 15: PORTC |= (1 << 7); break;
|
|
|
|
case 16: PORTE |= (1 << 0); break;
|
|
case 17: PORTE |= (1 << 1); break;
|
|
|
|
#else
|
|
#ifdef SHORT_D
|
|
|
|
case 6: PORTE |= (1 << 0); break;
|
|
case 7: PORTE |= (1 << 1); break;
|
|
|
|
case 8: PORTC |= (1 << 0); break;
|
|
case 9: PORTC |= (1 << 1); break;
|
|
case 10: PORTC |= (1 << 2); break;
|
|
case 11: PORTC |= (1 << 3); break;
|
|
case 12: PORTC |= (1 << 4); break;
|
|
case 13: PORTC |= (1 << 5); break;
|
|
case 14: PORTC |= (1 << 6); break;
|
|
case 15: PORTC |= (1 << 7); break;
|
|
|
|
#else
|
|
#ifdef SHORT_C
|
|
|
|
case 6: PORTD |= (1 << 6); DDRD &= ~(1 << 6); break;
|
|
case 7: PORTD |= (1 << 7); DDRD &= ~(1 << 7); break;
|
|
|
|
case 8: PORTE |= (1 << 0); DDRE &= ~(1 << 0); break;
|
|
case 9: PORTE |= (1 << 1); DDRE &= ~(1 << 1); break;
|
|
|
|
case 10: PORTC |= (1 << 0); DDRC &= ~(1 << 0); break;
|
|
case 11: PORTC |= (1 << 1); DDRC &= ~(1 << 1); break;
|
|
case 12: PORTC |= (1 << 2); DDRC &= ~(1 << 2); break;
|
|
case 13: PORTC |= (1 << 3); DDRC &= ~(1 << 3); break;
|
|
case 14: PORTC |= (1 << 4); DDRC &= ~(1 << 4); break;
|
|
case 15: PORTC |= (1 << 5); DDRC &= ~(1 << 5); break;
|
|
|
|
case 16: PORTC |= (1 << 6); DDRC &= ~(1 << 6); break;
|
|
case 17: PORTC |= (1 << 7); DDRC &= ~(1 << 7); break;
|
|
|
|
#endif
|
|
#endif
|
|
#endif
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
}
|
|
|
|
|
|
inline uint16_t getADC(void)
|
|
{
|
|
ADCSRA |= (1 << ADIF); // clear int flag by writing 1.
|
|
|
|
//wait for last read to complete.
|
|
while ( !( ADCSRA & (1 << ADIF) ) );
|
|
|
|
return ADC; // return sample
|
|
}
|
|
|
|
|
|
int sampleColumn_8x( uint8_t column, uint16_t * buffer )
|
|
{
|
|
// ensure all probe lines are driven low, and chill for recovery delay.
|
|
ADCSRA |= (1 << ADEN) | (1 << ADSC); // enable and start conversions
|
|
|
|
PORTC &= ~C_MASK;
|
|
PORTD &= ~D_MASK;
|
|
PORTE &= ~E_MASK;
|
|
|
|
PORTF = 0;
|
|
DDRF = 0;
|
|
|
|
recovery(OFF);
|
|
strobe_w(column);
|
|
|
|
hold_sample(OFF);
|
|
SET_FULL_MUX(0);
|
|
|
|
for ( uint8_t i = 0; i < STROBE_SETTLE; ++i ) { getADC(); }
|
|
|
|
hold_sample(ON);
|
|
|
|
#undef MUX_SETTLE
|
|
|
|
#if (MUX_SETTLE)
|
|
for ( uint8_t mux = 0; mux < 8; ++mux )
|
|
{
|
|
SET_FULL_MUX(mux); // our sample will use this
|
|
|
|
// wait for mux to settle.
|
|
for ( uint8_t i = 0; i < MUX_SETTLE; ++i ) { getADC(); }
|
|
|
|
// retrieve current read.
|
|
buffer[mux] = getADC();
|
|
}
|
|
#else
|
|
uint8_t mux = 0;
|
|
SET_FULL_MUX(mux);
|
|
getADC(); // throw away; unknown mux.
|
|
do {
|
|
SET_FULL_MUX(mux + 1); // our *next* sample will use this
|
|
|
|
// retrieve current read.
|
|
buffer[mux] = getADC();
|
|
mux++;
|
|
|
|
} while (mux < 8);
|
|
|
|
#endif
|
|
hold_sample(OFF);
|
|
recovery(ON);
|
|
|
|
// turn off adc.
|
|
ADCSRA &= ~(1 << ADEN);
|
|
|
|
// pull all columns' strobe-lines low.
|
|
DDRC |= C_MASK;
|
|
DDRD |= D_MASK;
|
|
DDRE |= E_MASK;
|
|
|
|
PORTC &= ~C_MASK;
|
|
PORTD &= ~D_MASK;
|
|
PORTE &= ~E_MASK;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int sampleColumn( uint8_t column )
|
|
{
|
|
int rval = 0;
|
|
|
|
rval = sampleColumn_8x( column, samples + SAMPLE_OFFSET );
|
|
|
|
#if (BUMP_DETECTION)
|
|
for ( uint8_t i = 0; i < 8; ++i )
|
|
{
|
|
if ( samples[SAMPLE_OFFSET + i] - adc_mux_averages[i] > BUMP_THRESHOLD )
|
|
{
|
|
// was a hump
|
|
_delay_us(BUMP_REST_US);
|
|
rval++;
|
|
error = 0x50;
|
|
error_data = samples[SAMPLE_OFFSET +i]; // | ((uint16_t)i << 8);
|
|
return rval;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return rval;
|
|
}
|
|
|
|
|
|
uint8_t testColumn( uint8_t strobe )
|
|
{
|
|
uint8_t column = 0;
|
|
uint8_t bit = 1;
|
|
for ( uint8_t i = 0; i < MUXES_COUNT; ++i )
|
|
{
|
|
uint16_t delta = keys_averages[(strobe << MUXES_COUNT_XSHIFT) + i];
|
|
|
|
if ( (db_sample = samples[SAMPLE_OFFSET + i] >> 1) > (db_threshold = threshold) + (db_delta = delta) )
|
|
{
|
|
column |= bit;
|
|
}
|
|
|
|
#ifdef THRESHOLD_VERIFICATION
|
|
if ( db_sample > 0xA0 )
|
|
{
|
|
printHex( db_sample );
|
|
print(" : ");
|
|
printHex( db_threshold );
|
|
print(" : ");
|
|
printHex( db_delta );
|
|
print(" :: ");
|
|
printHex( column );
|
|
print(" : ");
|
|
printHex( strobe );
|
|
print(NL);
|
|
}
|
|
#endif
|
|
|
|
bit <<= 1;
|
|
}
|
|
return column;
|
|
}
|
|
|
|
|
|
void dump(void) {
|
|
|
|
#ifdef DEBUG_FULL_SAMPLES_AVERAGES
|
|
// we don't want to debug-out during the measurements.
|
|
if ( !dump_count )
|
|
{
|
|
// Averages currently set per key
|
|
for ( int i = 0; i < KEY_COUNT; ++i )
|
|
{
|
|
if ( !(i & 0x0f) )
|
|
{
|
|
print("\n");
|
|
}
|
|
else if ( !(i & 0x07) )
|
|
{
|
|
print(" ");
|
|
}
|
|
|
|
print(" ");
|
|
printHex( keys_averages[i] );
|
|
}
|
|
|
|
print("\n");
|
|
|
|
// Previously read full ADC scans?
|
|
for ( int i = 0; i< KEY_COUNT; ++i)
|
|
{
|
|
if ( !(i & 0x0f) )
|
|
{
|
|
print("\n");
|
|
}
|
|
else if ( !(i & 0x07) )
|
|
{
|
|
print(" ");
|
|
}
|
|
|
|
print(" ");
|
|
printHex(full_samples[i]);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef DEBUG_STROBE_SAMPLES_AVERAGES
|
|
// Per strobe information
|
|
uint8_t cur_strober = ze_strober;
|
|
print("\n");
|
|
|
|
printHex(cur_strober);
|
|
|
|
// Previously read ADC scans on current strobe
|
|
print(" :");
|
|
for ( uint8_t i = 0; i < MUXES_COUNT; ++i )
|
|
{
|
|
print(" ");
|
|
printHex(full_samples[(cur_strober << MUXES_COUNT_XSHIFT) + i]);
|
|
}
|
|
|
|
// Averages current set on current strobe
|
|
print(" :");
|
|
|
|
for ( uint8_t i = 0; i < MUXES_COUNT; ++i )
|
|
{
|
|
print(" ");
|
|
printHex(keys_averages[(cur_strober << MUXES_COUNT_XSHIFT) + i]);
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef DEBUG_DELTA_SAMPLE_THRESHOLD
|
|
print("\n");
|
|
printHex( db_delta );
|
|
print(" ");
|
|
printHex( db_sample );
|
|
print(" ");
|
|
printHex( db_threshold );
|
|
print(" ");
|
|
printHex( column );
|
|
#endif
|
|
|
|
#ifdef DEBUG_USB_KEYMAP
|
|
print("\n ");
|
|
|
|
// Current keymap values
|
|
for ( uint8_t i = 0; i < STROBE_LINES; ++i )
|
|
{
|
|
printHex(cur_keymap[i]);
|
|
print(" ");
|
|
}
|
|
#endif
|
|
|
|
ze_strober++;
|
|
ze_strober &= 0xf;
|
|
|
|
dump_count++;
|
|
dump_count &= 0x0f;
|
|
}
|
|
|