Tue, 08 Oct 2019 12:00:31 +0200
Initial import of the CO2 meter application.
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Initial import of the CO2 meter application.
Michiel Broek <mbroek@mbse.eu>
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1 | /* |
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2 | |
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3 | u8log.c |
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4 | |
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5 | |
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6 | Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/) |
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7 | |
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8 | Copyright (c) 2018, olikraus@gmail.com |
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9 | All rights reserved. |
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10 | |
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11 | Redistribution and use in source and binary forms, with or without modification, |
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12 | are permitted provided that the following conditions are met: |
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13 | |
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14 | * Redistributions of source code must retain the above copyright notice, this list |
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15 | of conditions and the following disclaimer. |
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16 | |
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17 | * Redistributions in binary form must reproduce the above copyright notice, this |
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18 | list of conditions and the following disclaimer in the documentation and/or other |
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19 | materials provided with the distribution. |
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20 | |
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21 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
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22 | CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
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23 | INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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24 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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25 | DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR |
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26 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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27 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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28 | NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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29 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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30 | CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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31 | STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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32 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
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33 | ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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34 | |
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35 | */ |
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36 | |
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37 | #include <stdint.h> |
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38 | #include <string.h> |
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39 | #include "u8x8.h" |
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40 | |
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41 | |
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42 | /* |
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43 | static uint8_t u8log_is_on_screen(u8log_t *u8log, uint8_t x, uint8_t y) |
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44 | { |
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45 | if ( x >= u8log->width ) |
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46 | return 0; |
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47 | if ( y >= u8log->height ) |
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48 | return 0; |
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49 | return 1; |
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50 | } |
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51 | */ |
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52 | |
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53 | static void u8log_clear_screen(u8log_t *u8log) |
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54 | { |
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55 | uint8_t *dest = u8log->screen_buffer; |
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56 | uint16_t cnt = u8log->height; |
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57 | cnt *= u8log->width; |
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58 | do |
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59 | { |
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60 | *dest++ = ' '; |
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61 | cnt--; |
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62 | } while( cnt > 0 ); |
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63 | |
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64 | } |
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65 | |
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66 | |
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67 | /* scroll the content of the complete buffer, set redraw_line to 255 */ |
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68 | static void u8log_scroll_up(u8log_t *u8log) |
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69 | { |
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70 | uint8_t *dest = u8log->screen_buffer; |
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71 | uint8_t *src = dest+u8log->width; |
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72 | uint16_t cnt = u8log->height; |
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73 | cnt--; |
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74 | cnt *= u8log->width; |
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75 | do |
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76 | { |
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77 | *dest++ = *src++; |
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78 | cnt--; |
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79 | } while( cnt > 0 ); |
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80 | cnt = u8log->width; |
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81 | do |
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82 | { |
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83 | *dest++ = ' '; |
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84 | cnt--; |
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85 | } while(cnt > 0); |
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86 | |
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87 | if ( u8log->is_redraw_line_for_each_char ) |
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88 | u8log->is_redraw_all = 1; |
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89 | else |
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90 | u8log->is_redraw_all_required_for_next_nl = 1; |
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91 | } |
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92 | |
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93 | /* |
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94 | Place the cursor on the screen. This will also scroll, if required |
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95 | */ |
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96 | static void u8log_cursor_on_screen(u8log_t *u8log) |
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97 | { |
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98 | //printf("u8log_cursor_on_screen, cursor_y=%d\n", u8log->cursor_y); |
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99 | if ( u8log->cursor_x >= u8log->width ) |
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100 | { |
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101 | u8log->cursor_x = 0; |
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102 | u8log->cursor_y++; |
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103 | } |
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104 | while ( u8log->cursor_y >= u8log->height ) |
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105 | { |
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106 | u8log_scroll_up(u8log); |
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107 | u8log->cursor_y--; |
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108 | } |
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109 | } |
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110 | |
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111 | /* |
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112 | Write a printable, single char on the screen, do any kind of scrolling |
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113 | */ |
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114 | static void u8log_write_to_screen(u8log_t *u8log, uint8_t c) |
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115 | { |
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116 | u8log_cursor_on_screen(u8log); |
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117 | u8log->screen_buffer[u8log->cursor_y * u8log->width + u8log->cursor_x] = c; |
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118 | u8log->cursor_x++; |
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119 | |
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120 | if ( u8log->is_redraw_line_for_each_char ) |
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121 | { |
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122 | u8log->is_redraw_line = 1; |
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123 | u8log->redraw_line = u8log->cursor_y; |
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124 | } |
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125 | } |
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126 | |
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127 | /* |
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128 | Handle control codes or write the char to the screen. |
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129 | Supported control codes are: |
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130 | |
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131 | \n 10 Goto first position of the next line. Line is marked for redraw. |
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132 | \r 13 Goto first position in the same line. Line is marked for redraw. |
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133 | \t 9 Jump to the next tab position |
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134 | \f 12 Clear the screen and mark redraw for whole screen |
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135 | any other char Write char to screen. Line redraw mark depends on |
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136 | is_redraw_line_for_each_char flag. |
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137 | */ |
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138 | void u8log_write_char(u8log_t *u8log, uint8_t c) |
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139 | { |
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140 | switch(c) |
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141 | { |
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142 | case '\n': // 10 |
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143 | u8log->is_redraw_line = 1; |
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144 | u8log->redraw_line = u8log->cursor_y; |
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145 | if ( u8log->is_redraw_all_required_for_next_nl ) |
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146 | u8log->is_redraw_all = 1; |
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147 | u8log->is_redraw_all_required_for_next_nl = 0; |
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148 | u8log->cursor_y++; |
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149 | u8log->cursor_x = 0; |
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150 | break; |
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151 | case '\r': // 13 |
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152 | u8log->is_redraw_line = 1; |
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153 | u8log->redraw_line = u8log->cursor_y; |
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154 | u8log->cursor_x = 0; |
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155 | break; |
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156 | case '\t': // 9 |
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157 | u8log->cursor_x = (u8log->cursor_x + 8) & 0xf8; |
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158 | break; |
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159 | case '\f': // 12 |
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160 | u8log_clear_screen(u8log); |
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161 | u8log->is_redraw_all = 1; |
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162 | u8log->cursor_x = 0; |
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163 | u8log->cursor_y = 0; |
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164 | break; |
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165 | default: |
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166 | u8log_write_to_screen(u8log, c); |
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167 | break; |
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168 | } |
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169 | } |
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170 | |
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171 | void u8log_Init(u8log_t *u8log, uint8_t width, uint8_t height, uint8_t *buf) |
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172 | { |
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173 | memset(u8log, 0, sizeof(u8log_t)); |
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174 | u8log->width = width; |
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175 | u8log->height = height; |
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176 | u8log->screen_buffer = buf; |
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177 | u8log_clear_screen(u8log); |
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178 | } |
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179 | |
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180 | void u8log_SetCallback(u8log_t *u8log, u8log_cb cb, void *aux_data) |
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181 | { |
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182 | u8log->cb = cb; |
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183 | u8log->aux_data = aux_data; |
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184 | } |
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185 | |
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186 | void u8log_SetRedrawMode(u8log_t *u8log, uint8_t is_redraw_line_for_each_char) |
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187 | { |
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188 | u8log->is_redraw_line_for_each_char = is_redraw_line_for_each_char; |
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189 | } |
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190 | |
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191 | /* offset can be negative or positive, it is 0 by default */ |
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192 | void u8log_SetLineHeightOffset(u8log_t *u8log, int8_t line_height_offset) |
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193 | { |
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194 | u8log->line_height_offset = line_height_offset; |
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195 | } |
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196 | |
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197 | |
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198 | |
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199 | void u8log_WriteChar(u8log_t *u8log, uint8_t c) |
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200 | { |
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201 | u8log_write_char(u8log, c); |
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202 | if ( u8log->is_redraw_line || u8log->is_redraw_all ) |
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203 | { |
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204 | if ( u8log->cb != 0 ) |
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205 | { |
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206 | u8log->cb(u8log); |
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207 | } |
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208 | u8log->is_redraw_line = 0; |
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209 | u8log->is_redraw_all = 0; |
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210 | } |
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211 | } |
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212 | |
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213 | void u8log_WriteString(u8log_t *u8log, const char *s) |
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214 | { |
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215 | while( *s != '\0' ) |
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216 | { |
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217 | u8log_WriteChar(u8log, *s); |
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218 | s++; |
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219 | } |
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220 | } |
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221 | |
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222 | static void u8log_WriteHexHalfByte(u8log_t *u8log, uint8_t b) U8X8_NOINLINE; |
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223 | static void u8log_WriteHexHalfByte(u8log_t *u8log, uint8_t b) |
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224 | { |
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225 | b &= 0x0f; |
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226 | if ( b < 10 ) |
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227 | u8log_WriteChar(u8log, b+'0'); |
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228 | else |
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229 | u8log_WriteChar(u8log, b+'a'-10); |
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230 | } |
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231 | |
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232 | void u8log_WriteHex8(u8log_t *u8log, uint8_t b) |
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233 | { |
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234 | u8log_WriteHexHalfByte(u8log, b >> 4); |
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235 | u8log_WriteHexHalfByte(u8log, b); |
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236 | } |
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237 | |
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238 | void u8log_WriteHex16(u8log_t *u8log, uint16_t v) |
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239 | { |
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240 | u8log_WriteHex8(u8log, v>>8); |
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241 | u8log_WriteHex8(u8log, v); |
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242 | } |
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243 | |
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244 | void u8log_WriteHex32(u8log_t *u8log, uint32_t v) |
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245 | { |
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246 | u8log_WriteHex16(u8log, v>>16); |
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247 | u8log_WriteHex16(u8log, v); |
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248 | } |
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249 | |
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250 | /* v = value, d = number of digits (1..3) */ |
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251 | void u8log_WriteDec8(u8log_t *u8log, uint8_t v, uint8_t d) |
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252 | { |
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253 | u8log_WriteString(u8log, u8x8_u8toa(v, d)); |
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254 | } |
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255 | |
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256 | /* v = value, d = number of digits (1..5) */ |
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257 | void u8log_WriteDec16(u8log_t *u8log, uint16_t v, uint8_t d) |
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258 | { |
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259 | u8log_WriteString(u8log, u8x8_u16toa(v, d)); |
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260 | } |