[a06aa8b] | 1 | /*
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| 2 | * Copyright (C) 2017 The Contributors
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| 3 | *
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| 4 | * This program is free software: you can redistribute it and/or modify
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| 5 | * it under the terms of the GNU General Public License as published by
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| 6 | * the Free Software Foundation, either version 3 of the License, or (at
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| 7 | * your option) any later version.
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| 8 | *
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| 9 | * This program is distributed in the hope that it will be useful, but
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| 10 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 12 | * General Public License for more details.
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| 13 | *
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| 14 | * A copy of the GNU General Public License can be found in the file
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[2147e53] | 15 | * "gpl.txt" in the top directory of this repository.
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[a06aa8b] | 16 | */
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| 17 |
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| 18 | #include <all.h>
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| 19 |
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[4c71d39] | 20 | #define ver(...) _ver(lcd_verbose, 0, __VA_ARGS__)
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| 21 | #define ver2(...) _ver(lcd_verbose, 1, __VA_ARGS__)
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| 22 | #define ver3(...) _ver(lcd_verbose, 2, __VA_ARGS__)
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[a06aa8b] | 23 |
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[43ea417] | 24 | #define WIN_W (1634 * 2 / 3)
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| 25 | #define WIN_H (342 * 2 / 3)
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[7ba68aa] | 26 |
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| 27 | #define CON_W 86
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[43ea417] | 28 | #define CON_H 9
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[7ba68aa] | 29 |
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| 30 | #define CON_BGR 0x00000000
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| 31 | #define CON_BEL 0x00808080
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| 32 | #define CON_CUR 0x00e87000
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| 33 | #define CON_FGR ((SDL_Color){ .r = 255, .b = 255, .g = 255, .a = 255 })
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| 34 |
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| 35 | #define BEL_CYC 10000
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| 36 |
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| 37 | #define G_INIT 0x40
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| 38 | #define G_MWRITE 0x42
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| 39 | #define G_MREAD 0x43
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| 40 | #define G_SETSAD 0x44
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| 41 | #define G_CRSWR 0x46
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| 42 | #define G_CRSRD 0x47
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| 43 | #define G_CRSMRT 0x4C
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| 44 | #define G_CRSMLT 0x4D
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| 45 | #define G_CRSMUP 0x4E
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| 46 | #define G_CRSMDN 0x4F
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| 47 | #define G_ERASE 0x52
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| 48 | #define G_SLEEP 0x53
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[43ea417] | 49 | #define G_DSPOFF 0x58
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| 50 | #define G_DSPON 0x59
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[7ba68aa] | 51 | #define G_HSCRL 0x5A
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| 52 | #define G_OVRLAY 0x5B
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| 53 | #define G_CGRAM 0x5C
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| 54 | #define G_CRSFRM 0x5D
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| 55 |
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| 56 | static uint8_t mem[CON_H][CON_W + 1];
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| 57 |
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| 58 | static SDL_Window *win;
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| 59 | static SDL_Renderer *ren;
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| 60 | static SDL_atomic_t frame;
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| 61 |
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[43ea417] | 62 | static uint32_t render = 0;
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| 63 |
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[7ba68aa] | 64 | static TTF_Font *fon;
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| 65 | static int32_t fon_w, fon_h;
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| 66 |
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| 67 | static int32_t sur_w, sur_h;
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| 68 | static SDL_Surface *sur;
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| 69 |
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| 70 | static int32_t cur_x = 0, cur_y = 0;
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| 71 | static int32_t bel = 0;
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| 72 |
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| 73 | static int32_t current_op = 0x00;
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| 74 | static uint32_t cur_ad = 0;
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| 75 | static int32_t cur_ad_c = 0;
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| 76 |
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[43ea417] | 77 | static uint32_t last_val = 0x00;
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| 78 | static uint32_t last_off = 0;
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| 79 | static int32_t last_sz = -1;
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| 80 | static int32_t mult_val_c = 0;
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| 81 |
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| 82 | static void (*cursdir)(void);
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| 83 |
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[4c71d39] | 84 | int32_t lcd_verbose = 0;
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[a06aa8b] | 85 |
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[7ba68aa] | 86 | static void scroll(void)
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| 87 | {
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| 88 | memmove(mem, mem + 1, (CON_H - 1) * (CON_W + 1));
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| 89 | memset(mem + (CON_H - 1), ' ', CON_W);
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| 90 | }
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| 91 |
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| 92 | static void forw(void)
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| 93 | {
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| 94 | if (cur_x < CON_W - 1) {
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| 95 | ++cur_x;
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| 96 | return;
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| 97 | }
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| 98 |
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| 99 | if (cur_y == CON_H - 1) {
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| 100 | cur_x = 0;
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| 101 | scroll();
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| 102 | return;
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| 103 | }
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| 104 |
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| 105 | cur_x = 0;
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| 106 | ++cur_y;
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| 107 | }
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| 108 |
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| 109 | static void back(void)
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| 110 | {
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| 111 | if (cur_x > 0) {
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| 112 | --cur_x;
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| 113 | return;
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| 114 | }
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| 115 |
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| 116 | if (cur_y == 0) {
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| 117 | return;
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| 118 | }
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| 119 |
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| 120 | cur_x = CON_W - 1;
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| 121 | --cur_y;
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| 122 | }
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| 123 |
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[43ea417] | 124 | static void up(void)
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| 125 | {
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| 126 | if (cur_y > 0) {
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| 127 | --cur_y;
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| 128 | return;
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| 129 | }
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| 130 |
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| 131 | // TODO: What happens when cursor out of bounds
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| 132 | }
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| 133 |
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[7ba68aa] | 134 | static void down(void)
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| 135 | {
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| 136 | if (cur_y < CON_H - 1) {
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| 137 | ++cur_y;
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| 138 | return;
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| 139 | }
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| 140 |
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[43ea417] | 141 | // TODO: What happens when cursor out of bounds
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[7ba68aa] | 142 | }
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| 143 |
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| 144 | static void mvcur(uint32_t cur_addr) {
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| 145 | uint32_t n_cur_x = cur_addr % 85;
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| 146 | uint32_t n_cur_y = cur_addr / 85;
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| 147 |
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[43ea417] | 148 | ver2("lcd cur x %u\n", n_cur_x);
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| 149 | ver2("lcd cur y %u\n", n_cur_y);
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| 150 |
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[7ba68aa] | 151 | if (n_cur_x < CON_W - 1) {
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| 152 | cur_x = (int32_t) n_cur_x;
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| 153 | }
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| 154 | else {
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| 155 | err("invalid x cursor pos in lcd %u:%d", n_cur_x, CON_W);
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| 156 | }
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| 157 |
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| 158 | if (n_cur_y < CON_H - 1) {
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| 159 | cur_y = (int32_t) n_cur_y;
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| 160 | }
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| 161 | else {
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[43ea417] | 162 | cur_x = 0;
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| 163 | cur_y = 9;
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[7ba68aa] | 164 | err("invalid y cursor pos in lcd %u:%d", n_cur_y, CON_H);
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| 165 | }
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| 166 | }
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| 167 |
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| 168 | static void echo(uint8_t c)
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| 169 | {
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[43ea417] | 170 | if (c >127) {
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| 171 | return;
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| 172 | }
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| 173 | else if (c < 32) {
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[7ba68aa] | 174 | switch (c) {
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| 175 | case '\r':
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| 176 | cur_x = 0;
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| 177 | break;
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| 178 |
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| 179 | case '\n':
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| 180 | down();
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| 181 | break;
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| 182 |
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| 183 | case '\b':
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| 184 | back();
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| 185 | break;
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| 186 |
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| 187 | case '\a':
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| 188 | bel = BEL_CYC;
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| 189 | break;
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| 190 |
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| 191 | case 0:
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| 192 | mem[cur_y][cur_x] = ' ';
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[43ea417] | 193 | (*cursdir)();
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[7ba68aa] | 194 | break;
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| 195 |
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| 196 | case 28:
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| 197 | // TODO
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| 198 | echo('^');
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| 199 | echo((uint8_t)(c + '@'));
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| 200 | break;
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| 201 |
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| 202 | default:
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| 203 | echo('^');
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| 204 | echo((uint8_t)(c + '@'));
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| 205 | ver2("lcd default case echo %u", c);
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| 206 | return;
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| 207 | }
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| 208 | }
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| 209 | else {
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| 210 | mem[cur_y][cur_x] = c;
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[43ea417] | 211 | (*cursdir)();
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[7ba68aa] | 212 | }
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| 213 |
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[43ea417] | 214 | if (render) {
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| 215 | SDL_AtomicAdd(&frame, 1);
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| 216 | }
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| 217 | }
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| 218 |
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| 219 | static void clear_mem(void) {
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| 220 | for (int32_t y = 0; y < CON_H; ++y) {
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| 221 | for (int32_t x = 0; x < CON_W; ++x) {
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| 222 | mem[y][x] = ' ';
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| 223 | }
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| 224 |
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| 225 | mem[y][CON_W] = 0;
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| 226 | }
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[7ba68aa] | 227 | }
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| 228 |
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| 229 | void lcd_sdl(void)
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| 230 | {
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| 231 | ver3("lcd_sdl()");
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| 232 |
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| 233 | static int32_t last = 0;
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| 234 | int32_t now = SDL_AtomicGet(&frame);
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| 235 |
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| 236 | if (last == now) {
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| 237 | ver3("no update");
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| 238 | return;
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| 239 | }
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| 240 |
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| 241 | last = now;
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| 242 |
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| 243 | if (SDL_FillRect(sur, NULL, bel == 0 ? CON_BGR : CON_BEL) < 0) {
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| 244 | fail("SDL_FillRect() failed: %s", SDL_GetError());
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| 245 | }
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| 246 |
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| 247 | if (SDL_FillRect(sur, &(SDL_Rect){
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| 248 | .x = cur_x * fon_w,
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| 249 | .y = cur_y * fon_h,
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| 250 | .w = fon_w,
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| 251 | .h = fon_h
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| 252 | }, CON_CUR) < 0) {
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| 253 | fail("SDL_FillRect() failed: %s", SDL_GetError());
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| 254 | }
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| 255 |
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| 256 | for (int32_t y = 0; y < CON_H; ++y) {
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| 257 | char line[CON_W + 1];
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| 258 |
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| 259 | if (SDL_LockMutex(cpu_mutex) < 0) {
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| 260 | fail("SDL_LockMutex() failed: %s", SDL_GetError());
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| 261 | }
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| 262 |
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| 263 | memcpy(line, mem[y], CON_W + 1);
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| 264 |
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| 265 | if (SDL_UnlockMutex(cpu_mutex) < 0) {
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| 266 | fail("SDL_UnlockMutex() failed: %s", SDL_GetError());
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| 267 | }
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| 268 |
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| 269 | SDL_Surface *lin = TTF_RenderText_Blended(fon, line, CON_FGR);
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| 270 |
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| 271 | if (lin == NULL) {
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| 272 | fail("TTF_RenderText_Blended() failed: %s", TTF_GetError());
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| 273 | }
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| 274 |
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| 275 | if (SDL_BlitSurface(lin, NULL, sur, &(SDL_Rect){
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| 276 | .x = 0,
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| 277 | .y = y * fon_h,
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| 278 | .w = CON_W * fon_w,
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| 279 | .h = fon_h
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| 280 | })) {
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| 281 | fail("SDL_BlitSurface() failed: %s", SDL_GetError());
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| 282 | }
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| 283 |
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| 284 | SDL_FreeSurface(lin);
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| 285 | }
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| 286 |
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| 287 | SDL_Texture *tex = SDL_CreateTextureFromSurface(ren, sur);
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| 288 |
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| 289 | if (tex == NULL) {
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| 290 | fail("SDL_CreateTextureFromSurface() failed: %s", SDL_GetError());
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| 291 | }
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| 292 |
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| 293 | if (SDL_RenderCopy(ren, tex, NULL, NULL) < 0) {
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| 294 | fail("SDL_RenderCopy() failed: %s", SDL_GetError());
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| 295 | }
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| 296 |
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| 297 | SDL_DestroyTexture(tex);
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| 298 | SDL_RenderPresent(ren);
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| 299 | }
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| 300 |
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| 301 |
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[a06aa8b] | 302 | void lcd_init(void)
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| 303 | {
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| 304 | ver("lcd init");
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[7ba68aa] | 305 |
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| 306 | win = SDL_CreateWindow("Front LCD", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
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| 307 | WIN_W, WIN_H, 0);
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| 308 |
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| 309 | if (win == NULL) {
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| 310 | fail("SDL_CreateWindow() failed: %s", SDL_GetError());
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| 311 | }
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| 312 |
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| 313 | ren = SDL_CreateRenderer(win, -1, 0);
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| 314 |
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| 315 | if (ren == NULL) {
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| 316 | fail("SDL_CreateRenderer() failed: %s", SDL_GetError());
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| 317 | }
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| 318 |
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| 319 | SDL_AtomicSet(&frame, 1);
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| 320 |
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| 321 | SDL_RWops *ops = SDL_RWFromFile(font, "rb");
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| 322 |
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| 323 | if (ops == NULL) {
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| 324 | fail("error while opening font file %s: %s", font, SDL_GetError());
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| 325 | }
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| 326 |
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| 327 | fon = TTF_OpenFontRW(ops, 1, 32);
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| 328 |
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| 329 | if (fon == NULL) {
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| 330 | fail("error while loading font file %s: %s", font, TTF_GetError());
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| 331 | }
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| 332 |
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| 333 | fon_h = TTF_FontLineSkip(fon);
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| 334 |
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| 335 | if (TTF_GlyphMetrics(fon, 'X', NULL, NULL, NULL, NULL, &fon_w) < 0) {
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| 336 | fail("error while measuring font width: %s", TTF_GetError());
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| 337 | }
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| 338 |
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| 339 | sur_w = CON_W * fon_w;
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| 340 | sur_h = CON_H * fon_h;
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| 341 |
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| 342 | sur = SDL_CreateRGBSurface(0, sur_w, sur_h, 32, 0, 0, 0, 0);
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| 343 |
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| 344 | if (sur == NULL) {
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| 345 | fail("SDL_CreateRGBSurface() failed: %s", SDL_GetError());
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| 346 | }
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| 347 |
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[43ea417] | 348 | clear_mem();
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[7ba68aa] | 349 |
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[a06aa8b] | 350 | }
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| 351 |
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| 352 | void lcd_quit(void)
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| 353 | {
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| 354 | ver("lcd quit");
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[7ba68aa] | 355 |
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| 356 | SDL_FreeSurface(sur);
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| 357 | TTF_CloseFont(fon);
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| 358 |
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| 359 | SDL_DestroyRenderer(ren);
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| 360 | SDL_DestroyWindow(win);
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[a06aa8b] | 361 | }
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| 362 |
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[3c30832] | 363 | bool lcd_exec(void)
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[a06aa8b] | 364 | {
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[4c71d39] | 365 | ver3("lcd exec");
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[3c30832] | 366 | return false;
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[a06aa8b] | 367 | }
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| 368 |
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| 369 | uint32_t lcd_read(uint32_t off, int32_t sz)
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| 370 | {
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[4c71d39] | 371 | ver2("lcd rd %u:%d", off, sz * 8);
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[7ba68aa] | 372 |
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| 373 | uint32_t rv;
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| 374 |
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| 375 | switch (current_op) {
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| 376 | case G_MREAD:
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[43ea417] | 377 | ver2("lcd current op: %d\n", current_op);
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[7ba68aa] | 378 | rv = mem[cur_y][cur_x];
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| 379 | break;
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[43ea417] | 380 |
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[7ba68aa] | 381 | default:
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| 382 | rv = 0x00;
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| 383 | break;
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| 384 | }
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| 385 | return rv;
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[a06aa8b] | 386 | }
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| 387 |
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| 388 | void lcd_write(uint32_t off, int32_t sz, uint32_t val)
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| 389 | {
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[43ea417] | 390 |
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| 391 | if(last_val != val && mult_val_c > 0) {
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| 392 | if(mult_val_c > 1) {
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| 393 | ver2("lcd wr %u:%d 0x%0*x was called %u more times", last_off, last_sz * 8, last_sz * 2, last_val, mult_val_c);
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| 394 | }
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| 395 | else {
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| 396 | ver2("lcd wr %u:%d 0x%0*x", last_off, last_sz * 8, last_sz * 2, last_val);
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| 397 | }
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| 398 |
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| 399 | ver2("lcd wr %u:%d 0x%0*x", off, sz * 8, sz * 2, val);
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| 400 | mult_val_c = 0;
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| 401 | }
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| 402 | else if(last_val == val && mult_val_c >= 0) {
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| 403 | ++mult_val_c;
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| 404 | }
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| 405 | else {
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| 406 | ver2("lcd wr %u:%d 0x%0*x", off, sz * 8, sz * 2, val);
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| 407 | }
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| 408 |
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| 409 | last_val = val;
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| 410 | last_off = off;
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| 411 | last_sz = sz;
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[7ba68aa] | 412 |
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| 413 | if (off == 0) {
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| 414 | switch (current_op) {
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| 415 | case G_MWRITE:
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| 416 | echo((uint8_t)val);
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| 417 | break;
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[43ea417] | 418 |
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[7ba68aa] | 419 | case G_CRSWR:
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| 420 | if (cur_ad_c == 0) {
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| 421 | cur_ad = val;
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| 422 | cur_ad_c++;
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| 423 | } else if (cur_ad_c == 1) {
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| 424 | cur_ad = cur_ad | (val << 8);
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| 425 | mvcur(cur_ad);
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| 426 | cur_ad_c = 0;
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| 427 | }
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| 428 | break;
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[43ea417] | 429 |
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| 430 | case G_DSPON:
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| 431 | // TODO Configure blinking of cursor(s)
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| 432 | break;
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| 433 |
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[7ba68aa] | 434 | default:
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| 435 | break;
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| 436 | }
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| 437 | }
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| 438 | else {
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| 439 | switch (val) {
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| 440 | case G_MWRITE:
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| 441 | current_op = G_MWRITE;
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| 442 | break;
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[43ea417] | 443 |
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[7ba68aa] | 444 | case G_CRSMRT:
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[43ea417] | 445 | cursdir = &forw;
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| 446 | current_op = G_CRSMRT;
|
---|
| 447 | break;
|
---|
| 448 |
|
---|
| 449 | case G_CRSMUP:
|
---|
| 450 | cursdir = &up;
|
---|
| 451 | current_op = G_CRSMUP;
|
---|
| 452 | break;
|
---|
| 453 |
|
---|
| 454 | case G_CRSMDN:
|
---|
| 455 | cursdir = &down;
|
---|
| 456 | current_op = G_CRSMDN;
|
---|
[7ba68aa] | 457 | break;
|
---|
[43ea417] | 458 |
|
---|
[7ba68aa] | 459 | case G_CRSWR:
|
---|
| 460 | current_op = G_CRSWR;
|
---|
| 461 | break;
|
---|
[43ea417] | 462 |
|
---|
[7ba68aa] | 463 | case G_MREAD:
|
---|
| 464 | current_op = G_MREAD;
|
---|
| 465 | break;
|
---|
[43ea417] | 466 |
|
---|
| 467 | case G_DSPOFF:
|
---|
| 468 | if (SDL_SetRenderDrawColor(ren, 0x00, 0x00, 0x00, 0xff) < 0) {
|
---|
| 469 | fail("SDL_SetRenderDrawColor() failed: %s", SDL_GetError());
|
---|
| 470 | }
|
---|
| 471 | if (SDL_RenderClear(ren) < 0) {
|
---|
| 472 | fail("SDL_RenderClear() failed: %s", SDL_GetError());
|
---|
| 473 | }
|
---|
| 474 | SDL_RenderPresent(ren);
|
---|
| 475 | render = 0;
|
---|
| 476 | current_op = G_DSPOFF;
|
---|
| 477 | break;
|
---|
| 478 |
|
---|
| 479 | case G_DSPON:
|
---|
| 480 | render = 1;
|
---|
| 481 | current_op = G_DSPON;
|
---|
| 482 | break;
|
---|
| 483 |
|
---|
| 484 | case G_CRSFRM:
|
---|
| 485 | // TODO Setup Cursor Form...
|
---|
| 486 | current_op = 0x00;
|
---|
| 487 | break;
|
---|
| 488 |
|
---|
[7ba68aa] | 489 | default:
|
---|
| 490 | current_op = 0x00;
|
---|
| 491 | break;
|
---|
| 492 | }
|
---|
| 493 | }
|
---|
[a06aa8b] | 494 | }
|
---|