mirror of
https://github.com/taigrr/arduinolibs
synced 2025-01-18 04:33:12 -08:00
108 lines
4.0 KiB
C
108 lines
4.0 KiB
C
/*
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* Copyright (C) 2012 Southern Storm Software, Pty Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is 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
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* in 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
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* OR 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
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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// Utility for generating the button mapping table in LCD.cpp.
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#include <stdio.h>
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#define LCD_BUTTON_NONE 0
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#define LCD_BUTTON_LEFT 1
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#define LCD_BUTTON_RIGHT 2
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#define LCD_BUTTON_UP 3
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#define LCD_BUTTON_DOWN 4
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#define LCD_BUTTON_SELECT 5
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#define LCD_BUTTON_VALUE_GAP 10
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#define LCD_BUTTON_RIGHT_VALUE 0
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#define LCD_BUTTON_UP_VALUE 145
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#define LCD_BUTTON_DOWN_VALUE 329
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#define LCD_BUTTON_LEFT_VALUE 505
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#define LCD_BUTTON_SELECT_VALUE 741
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int main(int argc, char *argv[])
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{
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char rawTest[1024];
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int value, value2, value3, bits;
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char button;
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// Determine the actual values for each of the 1024 inputs.
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for (value = 0; value < 1024; ++value) {
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if (value < (LCD_BUTTON_RIGHT_VALUE + LCD_BUTTON_VALUE_GAP))
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button = LCD_BUTTON_RIGHT;
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else if (value >= (LCD_BUTTON_UP_VALUE - LCD_BUTTON_VALUE_GAP) &&
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value <= (LCD_BUTTON_UP_VALUE + LCD_BUTTON_VALUE_GAP))
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button = LCD_BUTTON_UP;
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else if (value >= (LCD_BUTTON_DOWN_VALUE - LCD_BUTTON_VALUE_GAP) &&
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value <= (LCD_BUTTON_DOWN_VALUE + LCD_BUTTON_VALUE_GAP))
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button = LCD_BUTTON_DOWN;
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else if (value >= (LCD_BUTTON_LEFT_VALUE - LCD_BUTTON_VALUE_GAP) &&
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value <= (LCD_BUTTON_LEFT_VALUE + LCD_BUTTON_VALUE_GAP))
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button = LCD_BUTTON_LEFT;
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else if (value >= (LCD_BUTTON_SELECT_VALUE - LCD_BUTTON_VALUE_GAP) &&
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value <= (LCD_BUTTON_SELECT_VALUE + LCD_BUTTON_VALUE_GAP))
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button = LCD_BUTTON_SELECT;
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else
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button = LCD_BUTTON_NONE;
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rawTest[value] = button;
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}
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// Dump the accuracy of different bit truncations.
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for (bits = 4; bits < 10; ++bits) {
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int count = 0;
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for (value = 0; value < 1024; ++value) {
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value2 = value & (((1 << bits) - 1) << (10 - bits));
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if (rawTest[value] == rawTest[value2])
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++count;
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}
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printf("bits = %d, accuracy = %g%%\n", bits, 100.0 * count / 1024.0);
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}
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printf("\n");
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// Dump the button mapping table for the selected bit count.
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bits = 5;
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printf("static prog_uint8_t const buttonMappings[] PROGMEM = {\n");
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for (value2 = 0; value2 < (1 << bits); ++value2) {
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value = value2 << (10 - bits);
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value3 = value + (1 << (10 - bits)) - 1;
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button = 0;
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while (!button && value <= value3) {
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button = rawTest[value];
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++value;
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}
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if ((value2 & 0x0F) != 0)
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printf(", ");
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else
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printf(" ");
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printf("%d", button);
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if ((value2 & 0x0F) == 0x0F) {
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if (value2 < ((1 << bits - 1)))
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printf(",\n");
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else
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printf("\n");
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}
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}
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printf("};\n");
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printf("#define mapButton(value) (pgm_read_byte(&(buttonMappings[(value) >> %d])))\n", 10 - bits);
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return 0;
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}
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