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.
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1 | /* |
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2 | |
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3 | u8x8_d_ssd1306_64x48.c |
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4 | |
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5 | Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/) |
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6 | |
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7 | Copyright (c) 2016, olikraus@gmail.com |
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8 | All rights reserved. |
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9 | |
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10 | Redistribution and use in source and binary forms, with or without modification, |
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11 | are permitted provided that the following conditions are met: |
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12 | |
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13 | * Redistributions of source code must retain the above copyright notice, this list |
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14 | of conditions and the following disclaimer. |
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15 | |
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16 | * Redistributions in binary form must reproduce the above copyright notice, this |
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17 | list of conditions and the following disclaimer in the documentation and/or other |
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18 | materials provided with the distribution. |
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19 | |
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20 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
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21 | CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
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22 | INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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23 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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24 | DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR |
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25 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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26 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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27 | NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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28 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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29 | CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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30 | STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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31 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
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32 | ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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33 | |
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34 | */ |
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35 | |
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36 | |
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37 | #include "u8x8.h" |
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38 | |
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39 | |
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40 | |
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41 | /* EastRising 0.66 OLED */ |
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42 | static const uint8_t u8x8_d_ssd1306_64x48_er_init_seq[] = { |
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43 | |
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44 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
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45 | |
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46 | |
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47 | U8X8_C(0x0ae), /* display off */ |
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48 | U8X8_CA(0x0d5, 0x080), /* clock divide ratio (0x00=1) and oscillator frequency (0x8) */ |
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49 | U8X8_CA(0x0a8, 0x02f), /* multiplex ratio, 0.66 OLED: changed from 0x1f to 0x2f */ |
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50 | U8X8_CA(0x0d3, 0x000), /* display offset, 0.66 OLED */ |
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51 | U8X8_C(0x040), /* set display start line to 0, 0.66 OLED */ |
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52 | U8X8_CA(0x08d, 0x014), /* [2] charge pump setting (p62): 0x014 enable, 0x010 disable, 0.66 OLED 0x14*/ |
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53 | U8X8_CA(0x020, 0x000), /* page addressing mode */ |
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54 | |
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55 | U8X8_C(0x0a1), /* segment remap a0/a1, 0.66 OLED */ |
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56 | U8X8_C(0x0c8), /* c0: scan dir normal, c8: reverse, 0.66 OLED */ |
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57 | // Flipmode |
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58 | // U8X8_C(0x0a0), /* segment remap a0/a1*/ |
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59 | // U8X8_C(0x0c0), /* c0: scan dir normal, c8: reverse */ |
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60 | |
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61 | U8X8_CA(0x0da, 0x012), /* com pin HW config, sequential com pin config (bit 4), disable left/right remap (bit 5), 0.66 OLED */ |
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62 | U8X8_CA(0x081, 0x0cf), /* [2] set contrast control, 0.66 OLED datasheet: 0xcf */ |
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63 | U8X8_CA(0x0d9, 0x022), /* [2] pre-charge period 0x022/f1, 0.66 OLED datasheet: 0x22 */ |
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64 | U8X8_CA(0x0db, 0x000), /* vcomh deselect level, 0.66 OLED datasheet: 0x00 */ |
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65 | |
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66 | U8X8_C(0x02e), /* Deactivate scroll */ |
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67 | U8X8_C(0x0a4), /* output ram to display */ |
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68 | U8X8_C(0x0a6), /* none inverted normal display mode */ |
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69 | |
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70 | U8X8_END_TRANSFER(), /* disable chip */ |
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71 | U8X8_END() /* end of sequence */ |
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72 | }; |
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73 | |
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74 | static const uint8_t u8x8_d_ssd1306_64x48_powersave0_seq[] = { |
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75 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
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76 | U8X8_C(0x0af), /* display on */ |
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77 | U8X8_END_TRANSFER(), /* disable chip */ |
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78 | U8X8_END() /* end of sequence */ |
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79 | }; |
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80 | |
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81 | static const uint8_t u8x8_d_ssd1306_64x48_powersave1_seq[] = { |
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82 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
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83 | U8X8_C(0x0ae), /* display off */ |
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84 | U8X8_END_TRANSFER(), /* disable chip */ |
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85 | U8X8_END() /* end of sequence */ |
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86 | }; |
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87 | |
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88 | static const uint8_t u8x8_d_ssd1306_64x48_flip0_seq[] = { |
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89 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
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90 | U8X8_C(0x0a1), /* segment remap a0/a1*/ |
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91 | U8X8_C(0x0c8), /* c0: scan dir normal, c8: reverse */ |
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92 | U8X8_END_TRANSFER(), /* disable chip */ |
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93 | U8X8_END() /* end of sequence */ |
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94 | }; |
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95 | |
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96 | static const uint8_t u8x8_d_ssd1306_64x48_flip1_seq[] = { |
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97 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
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98 | U8X8_C(0x0a0), /* segment remap a0/a1*/ |
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99 | U8X8_C(0x0c0), /* c0: scan dir normal, c8: reverse */ |
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100 | U8X8_END_TRANSFER(), /* disable chip */ |
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101 | U8X8_END() /* end of sequence */ |
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102 | }; |
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103 | |
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104 | |
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105 | static uint8_t u8x8_d_ssd1306_64x48_generic(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) |
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106 | { |
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107 | uint8_t x, c; |
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108 | uint8_t *ptr; |
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109 | switch(msg) |
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110 | { |
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111 | /* handled by the calling function |
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112 | case U8X8_MSG_DISPLAY_SETUP_MEMORY: |
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113 | u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_64x48_display_info); |
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114 | break; |
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115 | case U8X8_MSG_DISPLAY_INIT: |
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116 | u8x8_d_helper_display_init(u8x8); |
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117 | u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x48_er_init_seq); |
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118 | break; |
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119 | */ |
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120 | case U8X8_MSG_DISPLAY_SET_POWER_SAVE: |
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121 | if ( arg_int == 0 ) |
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122 | u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x48_powersave0_seq); |
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123 | else |
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124 | u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x48_powersave1_seq); |
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125 | break; |
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126 | case U8X8_MSG_DISPLAY_SET_FLIP_MODE: |
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127 | if ( arg_int == 0 ) |
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128 | { |
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129 | u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x48_flip0_seq); |
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130 | u8x8->x_offset = u8x8->display_info->default_x_offset; |
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131 | } |
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132 | else |
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133 | { |
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134 | u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x48_flip1_seq); |
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135 | u8x8->x_offset = u8x8->display_info->flipmode_x_offset; |
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136 | } |
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137 | break; |
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138 | #ifdef U8X8_WITH_SET_CONTRAST |
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139 | case U8X8_MSG_DISPLAY_SET_CONTRAST: |
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140 | u8x8_cad_StartTransfer(u8x8); |
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141 | u8x8_cad_SendCmd(u8x8, 0x081 ); |
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142 | u8x8_cad_SendArg(u8x8, arg_int ); /* ssd1306 has range from 0 to 255 */ |
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143 | u8x8_cad_EndTransfer(u8x8); |
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144 | break; |
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145 | #endif |
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146 | case U8X8_MSG_DISPLAY_DRAW_TILE: |
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147 | u8x8_cad_StartTransfer(u8x8); |
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148 | x = ((u8x8_tile_t *)arg_ptr)->x_pos; |
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149 | x *= 8; |
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150 | x += u8x8->x_offset; |
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151 | u8x8_cad_SendCmd(u8x8, 0x010 | (x>>4) ); |
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152 | u8x8_cad_SendCmd(u8x8, 0x000 | ((x&15))); |
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153 | u8x8_cad_SendCmd(u8x8, 0x0b0 | (((u8x8_tile_t *)arg_ptr)->y_pos)); |
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154 | |
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155 | do |
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156 | { |
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157 | c = ((u8x8_tile_t *)arg_ptr)->cnt; |
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158 | ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr; |
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159 | u8x8_cad_SendData(u8x8, c*8, ptr); /* note: SendData can not handle more than 255 bytes */ |
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160 | arg_int--; |
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161 | } while( arg_int > 0 ); |
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162 | |
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163 | u8x8_cad_EndTransfer(u8x8); |
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164 | break; |
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165 | default: |
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166 | return 0; |
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167 | } |
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168 | return 1; |
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169 | } |
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170 | |
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171 | |
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172 | static const u8x8_display_info_t u8x8_ssd1306_64x48_display_info = |
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173 | { |
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174 | /* chip_enable_level = */ 0, |
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175 | /* chip_disable_level = */ 1, |
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176 | |
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177 | /* post_chip_enable_wait_ns = */ 20, |
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178 | /* pre_chip_disable_wait_ns = */ 10, |
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179 | /* reset_pulse_width_ms = */ 100, /* SSD1306: 3 us */ |
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180 | /* post_reset_wait_ms = */ 100, /* far east OLEDs need much longer setup time */ |
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181 | /* sda_setup_time_ns = */ 50, /* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */ |
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182 | /* sck_pulse_width_ns = */ 50, /* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */ |
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183 | /* sck_clock_hz = */ 8000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns, increased to 8MHz (issue 215) */ |
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184 | /* spi_mode = */ 0, /* active high, rising edge */ |
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185 | /* i2c_bus_clock_100kHz = */ 4, |
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186 | /* data_setup_time_ns = */ 40, |
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187 | /* write_pulse_width_ns = */ 150, /* SSD1306: cycle time is 300ns, so use 300/2 = 150 */ |
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188 | /* tile_width = */ 8, |
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189 | /* tile_hight = */ 6, |
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190 | /* default_x_offset = */ 32, |
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191 | /* flipmode_x_offset = */ 32, |
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192 | /* pixel_width = */ 64, |
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193 | /* pixel_height = */ 48 |
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194 | }; |
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195 | |
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196 | /* East Rising 0.66" OLED */ |
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197 | uint8_t u8x8_d_ssd1306_64x48_er(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) |
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198 | { |
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199 | if ( msg == U8X8_MSG_DISPLAY_SETUP_MEMORY ) |
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200 | { |
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201 | u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ssd1306_64x48_display_info); |
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202 | return 1; |
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203 | } |
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204 | else if ( msg == U8X8_MSG_DISPLAY_INIT ) |
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205 | { |
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206 | u8x8_d_helper_display_init(u8x8); |
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207 | u8x8_cad_SendSequence(u8x8, u8x8_d_ssd1306_64x48_er_init_seq); |
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208 | return 1; |
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209 | } |
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210 | return u8x8_d_ssd1306_64x48_generic(u8x8, msg, arg_int, arg_ptr); |
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211 | } |
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212 | |
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213 |