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1 /* |
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2 |
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3 u8x8_d_pcd8544_84x48.c (so called "Nokia 5110" displays) |
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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 #include "u8x8.h" |
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37 |
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38 |
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39 |
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40 |
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41 static const uint8_t u8x8_d_pcd8544_84x48_init_seq[] = { |
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42 |
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43 U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
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44 |
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45 U8X8_C(0x021), /* activate chip (PD=0), horizontal increment (V=0), enter extended command set (H=1) */ |
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46 U8X8_C(0x006), /* temp. control: b10 = 2 */ |
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47 U8X8_C(0x013), /* bias system 1:48 */ |
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48 U8X8_C(0x0c0), /* medium Vop */ |
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49 |
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50 U8X8_C(0x020), /* activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0) */ |
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51 U8X8_C(0x008), /* blank */ |
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52 U8X8_C(0x024), /* power down (PD=1), horizontal increment (V=0), enter normal command set (H=0) */ |
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53 |
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54 U8X8_END_TRANSFER(), /* disable chip */ |
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55 U8X8_END() /* end of sequence */ |
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56 }; |
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57 |
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58 static const uint8_t u8x8_d_pcd8544_84x48_powersave0_seq[] = { |
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59 U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
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60 U8X8_C(0x020), /* activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0) */ |
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61 U8X8_C(0x00c), /* display on */ |
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62 U8X8_END_TRANSFER(), /* disable chip */ |
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63 U8X8_END() /* end of sequence */ |
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64 }; |
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65 |
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66 static const uint8_t u8x8_d_pcd8544_84x48_powersave1_seq[] = { |
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67 U8X8_START_TRANSFER(), /* enable chip, delay is part of the transfer start */ |
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68 U8X8_C(0x020), /* activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0) */ |
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69 U8X8_C(0x008), /* blank */ |
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70 U8X8_C(0x024), /* power down (PD=1), horizontal increment (V=0), enter normal command set (H=0) */ |
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71 U8X8_END_TRANSFER(), /* disable chip */ |
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72 U8X8_END() /* end of sequence */ |
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73 }; |
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74 |
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75 |
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76 |
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77 static const u8x8_display_info_t u8x8_pcd8544_84x48_display_info = |
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78 { |
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79 /* chip_enable_level = */ 0, |
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80 /* chip_disable_level = */ 1, |
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81 |
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82 /* post_chip_enable_wait_ns = */ 5, |
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83 /* pre_chip_disable_wait_ns = */ 5, |
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84 /* reset_pulse_width_ms = */ 2, |
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85 /* post_reset_wait_ms = */ 2, |
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86 /* sda_setup_time_ns = */ 12, |
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87 /* sck_pulse_width_ns = */ 75, /* half of cycle time (100ns according to datasheet), AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */ |
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88 /* sck_clock_hz = */ 4000000UL, /* since Arduino 1.6.0, the SPI bus speed in Hz. Should be 1000000000/sck_pulse_width_ns */ |
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89 /* spi_mode = */ 0, /* active high, rising edge */ |
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90 /* i2c_bus_clock_100kHz = */ 4, |
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91 /* data_setup_time_ns = */ 30, |
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92 /* write_pulse_width_ns = */ 40, |
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93 /* tile_width = */ 11, /* width of 11*8=88 pixel */ |
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94 /* tile_hight = */ 6, |
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95 /* default_x_offset = */ 0, |
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96 /* flipmode_x_offset = */ 0, |
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97 /* pixel_width = */ 84, |
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98 /* pixel_height = */ 48 |
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99 }; |
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100 |
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101 uint8_t u8x8_d_pcd8544_84x48(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) |
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102 { |
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103 uint8_t x, c; |
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104 uint8_t *ptr; |
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105 switch(msg) |
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106 { |
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107 case U8X8_MSG_DISPLAY_SETUP_MEMORY: |
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108 u8x8_d_helper_display_setup_memory(u8x8, &u8x8_pcd8544_84x48_display_info); |
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109 break; |
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110 case U8X8_MSG_DISPLAY_INIT: |
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111 u8x8_d_helper_display_init(u8x8); |
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112 u8x8_cad_SendSequence(u8x8, u8x8_d_pcd8544_84x48_init_seq); |
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113 break; |
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114 case U8X8_MSG_DISPLAY_SET_POWER_SAVE: |
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115 if ( arg_int == 0 ) |
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116 u8x8_cad_SendSequence(u8x8, u8x8_d_pcd8544_84x48_powersave0_seq); |
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117 else |
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118 u8x8_cad_SendSequence(u8x8, u8x8_d_pcd8544_84x48_powersave1_seq); |
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119 break; |
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120 // case U8X8_MSG_DISPLAY_SET_FLIP_MODE: |
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121 // break; NOT SUPPORTED |
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122 |
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123 #ifdef U8X8_WITH_SET_CONTRAST |
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124 case U8X8_MSG_DISPLAY_SET_CONTRAST: |
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125 u8x8_cad_StartTransfer(u8x8); |
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126 u8x8_cad_SendCmd(u8x8, 0x021 ); /* command mode, extended function set */ |
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127 u8x8_cad_SendCmd(u8x8, 0x080 | (arg_int >> 1) ); |
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128 u8x8_cad_EndTransfer(u8x8); |
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129 break; |
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130 #endif |
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131 case U8X8_MSG_DISPLAY_DRAW_TILE: |
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132 u8x8_cad_StartTransfer(u8x8); |
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133 |
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134 x = ((u8x8_tile_t *)arg_ptr)->x_pos; |
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135 x *= 8; |
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136 x += u8x8->x_offset; |
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137 u8x8_cad_SendCmd(u8x8, 0x020 ); /* activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0) */ |
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138 u8x8_cad_SendCmd(u8x8, 0x080 | (x) ); /* set X address */ |
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139 u8x8_cad_SendCmd(u8x8, 0x040 | (((u8x8_tile_t *)arg_ptr)->y_pos) ); /* set Y address */ |
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140 |
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141 ptr = ((u8x8_tile_t *)arg_ptr)->tile_ptr; |
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142 c = ((u8x8_tile_t *)arg_ptr)->cnt; |
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143 c *= 8; |
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144 do |
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145 { |
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146 if ( c + x > 84u ) |
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147 { |
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148 if ( x >= 84u ) |
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149 break; |
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150 c = 84u; |
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151 c -= x; |
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152 } |
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153 u8x8_cad_SendData(u8x8, c, ptr); /* note: SendData can not handle more than 255 bytes */ |
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154 x += c; |
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155 arg_int--; |
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156 } while( arg_int > 0 ); |
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157 |
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158 u8x8_cad_EndTransfer(u8x8); |
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159 break; |
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160 default: |
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161 return 0; |
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162 } |
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163 return 1; |
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164 } |
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165 |
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166 |