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map7/gist:7c6d2e96f0a3b59d79a0dd9b5e377b44

Created September 9, 2021 10:45
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  1. map7 created this gist Sep 9, 2021.
    25 changes: 25 additions & 0 deletions gistfile1.txt
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,25 @@
    // A simple gamma look-up-table, stored in Program Memory
    // To access the table, must use: pgm_read_byte()

    #ifndef _INC_GAMMA8_H_
    #define _INC_GAMMA8_H_

    const uint8_t PROGMEM gamma8[] = {
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2,
    2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5,
    5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10,
    10, 10, 11, 11, 11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 16, 16,
    17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 24, 24, 25,
    25, 26, 27, 27, 28, 29, 29, 30, 31, 32, 32, 33, 34, 35, 35, 36,
    37, 38, 39, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 50,
    51, 52, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 68,
    69, 70, 72, 73, 74, 75, 77, 78, 79, 81, 82, 83, 85, 86, 87, 89,
    90, 92, 93, 95, 96, 98, 99,101,102,104,105,107,109,110,112,114,
    115,117,119,120,122,124,126,127,129,131,133,135,137,138,140,142,
    144,146,148,150,152,154,156,158,160,162,164,167,169,171,173,175,
    177,180,182,184,186,189,191,193,196,198,200,203,205,208,210,213,
    215,218,220,223,225,228,231,233,236,239,241,244,247,249,252,255 };

    #endif