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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Initial import of the CO2 meter application.
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2 | |
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3 | u8x8_d_ist7920.c |
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4 | |
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5 | this is NOT ST7920! |
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6 | |
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7 | Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/) |
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8 | |
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9 | Copyright (c) 2019, olikraus@gmail.com |
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10 | All rights reserved. |
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11 | |
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12 | Redistribution and use in source and binary forms, with or without modification, |
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13 | are permitted provided that the following conditions are met: |
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14 | |
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15 | * Redistributions of source code must retain the above copyright notice, this list |
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16 | of conditions and the following disclaimer. |
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17 | |
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18 | * Redistributions in binary form must reproduce the above copyright notice, this |
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19 | list of conditions and the following disclaimer in the documentation and/or other |
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20 | materials provided with the distribution. |
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21 | |
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22 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
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23 | CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
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24 | INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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25 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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26 | DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR |
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27 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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28 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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29 | NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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30 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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31 | CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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32 | STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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33 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
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34 | ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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35 | |
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36 | |
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37 | */ |
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38 | #include "u8x8.h" |
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39 | |
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40 | |
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41 | |
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42 | |
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43 | static const uint8_t u8x8_d_ist7920_128x128_powersave0_seq[] = { |
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44 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
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45 | U8X8_C(0x03d), /* display on */ |
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46 | U8X8_END_TRANSFER(), /* disable chip */ |
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47 | U8X8_END() /* end of sequence */ |
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48 | }; |
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49 | |
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50 | static const uint8_t u8x8_d_ist7920_128x128_powersave1_seq[] = { |
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51 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
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52 | U8X8_C(0x03c), /* display off */ |
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53 | U8X8_END_TRANSFER(), /* disable chip */ |
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54 | U8X8_END() /* end of sequence */ |
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55 | }; |
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56 | |
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57 | static const uint8_t u8x8_d_ist7920_128x128_flip0_seq[] = { |
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58 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
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59 | U8X8_C(0x064), /* Display Ctrl: Bit3: SHL 2:ADC 1:EON, 0:REV */ |
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60 | U8X8_END_TRANSFER(), /* disable chip */ |
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61 | U8X8_END() /* end of sequence */ |
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62 | }; |
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63 | |
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64 | static const uint8_t u8x8_d_ist7920_128x128_flip1_seq[] = { |
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65 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
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66 | U8X8_C(0x068), /* Display Ctrl: Bit3: SHL 2:ADC 1:EON, 0:REV */ |
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67 | U8X8_END_TRANSFER(), /* disable chip */ |
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68 | U8X8_END() /* end of sequence */ |
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69 | }; |
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70 | |
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71 | |
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72 | static const u8x8_display_info_t u8x8_ist7920_128x128_display_info = |
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73 | { |
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74 | /* chip_enable_level = */ 0, |
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75 | /* chip_disable_level = */ 1, |
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76 | |
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77 | /* post_chip_enable_wait_ns = */ 90, /* IST7920 datasheet, page 48 */ |
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78 | /* pre_chip_disable_wait_ns = */ 90, /* IST7920 datasheet, page 48 */ |
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79 | /* reset_pulse_width_ms = */ 10, |
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80 | /* post_reset_wait_ms = */ 20, /* IST7920 Startup Seq.. */ |
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81 | /* sda_setup_time_ns = */ 45, /* IST7920 datasheet, page 48 */ |
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82 | /* sck_pulse_width_ns = */ 130, /* IST7920 datasheet, page 48 */ |
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83 | /* sck_clock_hz = */ 3000000UL, /* IST7920 datasheet: 260ns */ |
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84 | /* spi_mode = */ 0, /* active high, rising edge (not verified) */ |
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85 | /* i2c_bus_clock_100kHz = */ 4, /* 400kHz according to IST7920 datasheet */ |
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86 | /* data_setup_time_ns = */ 60, /* IST7920 datasheet, page 47 */ |
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87 | /* write_pulse_width_ns = */ 150, /* IST7920 datasheet, page 47 */ |
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88 | /* tile_width = */ 16, /* width of 16*8=128 pixel */ |
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89 | /* tile_hight = */ 16, |
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90 | /* default_x_offset = */ 0, |
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91 | /* flipmode_x_offset = */ 0, |
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92 | /* pixel_width = */ 128, |
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93 | /* pixel_height = */ 128 |
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94 | }; |
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95 | |
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96 | /* 1/128 Duty, 1/10 Bias, 128x128 round display */ |
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97 | static const uint8_t u8x8_d_ist7920_128x128_init_seq[] = { |
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98 | |
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99 | U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
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100 | |
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101 | U8X8_C(0x076), /* Software Reset */ |
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102 | U8X8_DLY(50), |
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103 | U8X8_C(0x03c), /* display off */ |
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104 | |
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105 | |
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106 | U8X8_CA(0x090, 128), /* Set Duty */ |
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107 | //U8X8_CAA(0x0b2, 0x011, 0x00), /* Set Frame Control */ |
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108 | |
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109 | U8X8_CA(0x030, 16), /* Set Bias 0: 1/8, 8: 1/9, 16: 1/10, 24: 1/11, 48: 1/12 ... */ |
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110 | U8X8_CA(0x031, 0x03f), /* Set voltage generate clock(31H/11H) */ |
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111 | //U8X8_CA(0x032, 0x015), /* Temperature compensation */ |
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112 | U8X8_CA(0x033, 0x020), /* Power Control */ |
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113 | U8X8_DLY(100), |
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114 | U8X8_CA(0x033, 0x02c), /* Power Control */ |
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115 | U8X8_DLY(100), |
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116 | U8X8_C(0xfd), /* set booster */ |
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117 | U8X8_DLY(100), |
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118 | U8X8_CA(0x033, 0x02f), /* Power Control */ |
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119 | U8X8_DLY(200), |
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120 | |
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121 | U8X8_C(0x064), /* Display Ctrl: Bit3: SHL 2:ADC 1:EON, 0:REV */ |
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122 | |
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123 | U8X8_CAA(0x074, 0x000, 0x00f), /* AY Window */ |
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124 | U8X8_CAA(0x075, 0x000, 0x07f), /* AX Window */ |
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125 | |
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126 | U8X8_CA(0x040, 64), /* Start line at 64 */ |
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127 | |
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128 | U8X8_CA(0x0b1, 100), /* electronic volume */ |
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129 | |
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130 | |
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131 | U8X8_END_TRANSFER(), /* disable chip */ |
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132 | U8X8_END() /* end of sequence */ |
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133 | }; |
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134 | |
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135 | uint8_t u8x8_d_ist7920_128x128(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) |
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136 | { |
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137 | uint8_t x, c; |
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138 | uint8_t *ptr; |
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139 | switch(msg) |
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140 | { |
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141 | case U8X8_MSG_DISPLAY_SETUP_MEMORY: |
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142 | u8x8_d_helper_display_setup_memory(u8x8, &u8x8_ist7920_128x128_display_info); |
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143 | break; |
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144 | case U8X8_MSG_DISPLAY_INIT: |
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145 | u8x8_d_helper_display_init(u8x8); |
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146 | u8x8_cad_SendSequence(u8x8, u8x8_d_ist7920_128x128_init_seq); |
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147 | break; |
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148 | case U8X8_MSG_DISPLAY_SET_POWER_SAVE: |
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149 | if ( arg_int == 0 ) |
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150 | u8x8_cad_SendSequence(u8x8, u8x8_d_ist7920_128x128_powersave0_seq); |
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151 | else |
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152 | u8x8_cad_SendSequence(u8x8, u8x8_d_ist7920_128x128_powersave1_seq); |
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153 | break; |
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154 | case U8X8_MSG_DISPLAY_SET_FLIP_MODE: |
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155 | if ( arg_int == 0 ) |
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156 | { |
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157 | u8x8_cad_SendSequence(u8x8, u8x8_d_ist7920_128x128_flip0_seq); |
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158 | u8x8->x_offset = u8x8->display_info->default_x_offset; |
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159 | } |
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160 | else |
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161 | { |
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162 | u8x8_cad_SendSequence(u8x8, u8x8_d_ist7920_128x128_flip1_seq); |
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163 | u8x8->x_offset = u8x8->display_info->flipmode_x_offset; |
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164 | } |
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165 | break; |
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166 | #ifdef U8X8_WITH_SET_CONTRAST |
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167 | case U8X8_MSG_DISPLAY_SET_CONTRAST: |
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168 | u8x8_cad_StartTransfer(u8x8); |
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169 | u8x8_cad_SendCmd(u8x8, 0x0b1 ); |
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170 | u8x8_cad_SendArg(u8x8, arg_int ); /* st7920 has range from 0 to 255 */ |
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171 | u8x8_cad_EndTransfer(u8x8); |
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172 | break; |
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173 | #endif |
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174 | case U8X8_MSG_DISPLAY_DRAW_TILE: |
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175 | u8x8_cad_StartTransfer(u8x8); |
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176 | |
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177 | x = ((u8x8_tile_t *)arg_ptr)->x_pos; |
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178 | x *= 8; |
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179 | x += u8x8->x_offset; |
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180 | u8x8_cad_SendCmd(u8x8, 0x0c0 ); |
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181 | u8x8_cad_SendArg(u8x8, x ); |
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182 | u8x8_cad_SendCmd(u8x8, 0x001 ); |
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183 | u8x8_cad_SendArg(u8x8, (((u8x8_tile_t *)arg_ptr)->y_pos) ); |
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184 | |
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185 | c = ((u8x8_tile_t *)arg_ptr)->cnt; |
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186 | c *= 8; |
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187 | ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr; |
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188 | do |
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189 | { |
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190 | u8x8_cad_SendData(u8x8, c, ptr); /* note: SendData can not handle more than 255 bytes */ |
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191 | arg_int--; |
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192 | } while( arg_int > 0 ); |
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193 | |
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194 | u8x8_cad_EndTransfer(u8x8); |
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195 | break; |
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196 | default: |
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197 | return 0; |
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198 | } |
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199 | return 1; |
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200 | } |
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201 | |
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202 |