6557022f20
- Includes new "table pinning" setup (much easier to understand) - Matrix layouts will be split into their own dependent modules later - Changed the HID Raw view id (too many teensy devices on this computer...) - Moved the macro processing outside of the usb timer signal (this will be slower overall, but will result in more consistant behaviour)
97 lines
2.8 KiB
C
97 lines
2.8 KiB
C
/* Copyright (C) 2011 by Jacob Alexander
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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// ----- Includes -----
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// AVR Includes
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#include <avr/interrupt.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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#include "matrix_scan.h"
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// ----- Defines -----
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// Debouncing Defines
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#define SAMPLE_THRESHOLD 110
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#define MAX_SAMPLES 127 // Max is 127, reaching 128 is very bad
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// ----- Macros -----
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// Loop over all of the sampled keys of the given array
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// If the number of samples is higher than the sample threshold, flag the high bit, clear otherwise
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// This should be resetting VERY quickly, cutting off a potentially valid keypress is not an issue
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#define DEBOUNCE_ASSESS(table,size) \
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for ( uint8_t key = 1; key < size + 1; key++ ) \
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table[key] = ( table[key] & ~(1 << 7) ) > SAMPLE_THRESHOLD ? (1 << 7) : 0x00
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// ----- Variables -----
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// Keeps track of the number of scans, so we only do a debounce assess when it would be valid (as it throws away data)
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uint8_t scan_count = 0;
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// This is where the matrix scan data is held, as well as debouncing is evaluated to, which (depending on the read value) is handled
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// by the macro module
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uint8_t KeyIndex_Array[KEYBOARD_SIZE + 1];
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// ----- Functions -----
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// Setup
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inline void scan_setup()
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{
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matrix_pinSetup( (uint8_t*)matrix_pinout );
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}
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// Main Detection Loop
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inline uint8_t scan_loop()
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{
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// Check count to see if the sample threshold may have been reached, otherwise collect more data
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if ( scan_count++ < MAX_SAMPLES )
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{
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matrix_scan( (uint8_t*)matrix_pinout, KeyIndex_Array );
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// Signal Main Detection Loop to continue scanning
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return 0;
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}
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// Reset Sample Counter
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scan_count = 0;
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// Assess debouncing sample table
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DEBOUNCE_ASSESS( KeyIndex_Array, KeyIndex_Size );
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// Ready to allow for USB send
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return 1;
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}
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