1 | /***************************************************
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2 | This is a library for the Adafruit 1.8" SPI display.
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3 | This library works with the Adafruit 1.8" TFT Breakout w/SD card
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4 | ----> http://www.adafruit.com/products/358
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5 | as well as Adafruit raw 1.8" TFT display
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6 | ----> http://www.adafruit.com/products/618
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7 |
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8 | Check out the links above for our tutorials and wiring diagrams
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9 | These displays use SPI to communicate, 4 or 5 pins are required to
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10 | interface (RST is optional)
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11 | Adafruit invests time and resources providing this open source code,
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12 | please support Adafruit and open-source hardware by purchasing
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13 | products from Adafruit!
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14 |
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15 | Written by Limor Fried/Ladyada for Adafruit Industries.
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16 | MIT license, all text above must be included in any redistribution
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17 | ****************************************************/
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18 |
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19 | #include "Adafruit_ST7735.h"
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20 | #include <avr/pgmspace.h>
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21 | #include <limits.h>
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22 | #include "pins_arduino.h"
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23 | #include "wiring_private.h"
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24 | #include <SPI.h>
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25 |
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26 | inline uint16_t swapcolor(uint16_t x) {
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27 | return (x << 11) | (x & 0x07E0) | (x >> 11);
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28 | }
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29 |
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30 |
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31 | // Constructor when using software SPI. All output pins are configurable.
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32 | Adafruit_ST7735::Adafruit_ST7735(uint8_t cs, uint8_t rs, uint8_t sid,
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33 | uint8_t sclk, uint8_t rst) : Adafruit_GFX(ST7735_TFTWIDTH, ST7735_TFTHEIGHT)
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34 | {
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35 | _cs = cs;
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36 | _rs = rs;
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37 | _sid = sid;
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38 | _sclk = sclk;
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39 | _rst = rst;
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40 | hwSPI = false;
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41 | }
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42 |
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43 |
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44 | // Constructor when using hardware SPI. Faster, but must use SPI pins
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45 | // specific to each board type (e.g. 11,13 for Uno, 51,52 for Mega, etc.)
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46 | Adafruit_ST7735::Adafruit_ST7735(uint8_t cs, uint8_t rs, uint8_t rst) :
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47 | Adafruit_GFX(ST7735_TFTWIDTH, ST7735_TFTHEIGHT)
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48 | {
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49 | _cs = cs;
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50 | _rs = rs;
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51 | _rst = rst;
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52 | hwSPI = true;
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53 | _sid = _sclk = 0;
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54 | }
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55 |
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56 |
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57 | inline void Adafruit_ST7735::spiwrite(uint8_t c) {
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58 |
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59 | //Serial.println(c, HEX);
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60 |
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61 | if (hwSPI) {
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62 | SPI.transfer(c);
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63 | } else {
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64 | // Fast SPI bitbang swiped from LPD8806 library
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65 | for(uint8_t bit = 0x80; bit; bit >>= 1) {
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66 | if(c & bit) *dataport |= datapinmask;
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67 | else *dataport &= ~datapinmask;
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68 | *clkport |= clkpinmask;
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69 | *clkport &= ~clkpinmask;
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70 | }
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71 | }
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72 | }
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73 |
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74 |
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75 | void Adafruit_ST7735::writecommand(uint8_t c) {
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76 | *rsport &= ~rspinmask;
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77 | *csport &= ~cspinmask;
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78 |
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79 | //Serial.print("C ");
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80 | spiwrite(c);
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81 |
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82 | *csport |= cspinmask;
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83 | }
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84 |
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85 |
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86 | void Adafruit_ST7735::writedata(uint8_t c) {
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87 | *rsport |= rspinmask;
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88 | *csport &= ~cspinmask;
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89 |
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90 | //Serial.print("D ");
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91 | spiwrite(c);
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92 |
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93 | *csport |= cspinmask;
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94 | }
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95 |
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96 |
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97 | // Rather than a bazillion writecommand() and writedata() calls, screen
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98 | // initialization commands and arguments are organized in these tables
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99 | // stored in PROGMEM. The table may look bulky, but that's mostly the
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100 | // formatting -- storage-wise this is hundreds of bytes more compact
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101 | // than the equivalent code. Companion function follows.
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102 | #define DELAY 0x80
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103 | PROGMEM const static unsigned char
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104 | Bcmd[] = { // Initialization commands for 7735B screens
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105 | 18, // 18 commands in list:
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106 | ST7735_SWRESET, DELAY, // 1: Software reset, no args, w/delay
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107 | 50, // 50 ms delay
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108 | ST7735_SLPOUT , DELAY, // 2: Out of sleep mode, no args, w/delay
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109 | 255, // 255 = 500 ms delay
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110 | ST7735_COLMOD , 1+DELAY, // 3: Set color mode, 1 arg + delay:
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111 | 0x05, // 16-bit color
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112 | 10, // 10 ms delay
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113 | ST7735_FRMCTR1, 3+DELAY, // 4: Frame rate control, 3 args + delay:
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114 | 0x00, // fastest refresh
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115 | 0x06, // 6 lines front porch
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116 | 0x03, // 3 lines back porch
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117 | 10, // 10 ms delay
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118 | ST7735_MADCTL , 1 , // 5: Memory access ctrl (directions), 1 arg:
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119 | 0x08, // Row addr/col addr, bottom to top refresh
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120 | ST7735_DISSET5, 2 , // 6: Display settings #5, 2 args, no delay:
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121 | 0x15, // 1 clk cycle nonoverlap, 2 cycle gate
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122 | // rise, 3 cycle osc equalize
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123 | 0x02, // Fix on VTL
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124 | ST7735_INVCTR , 1 , // 7: Display inversion control, 1 arg:
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125 | 0x0, // Line inversion
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126 | ST7735_PWCTR1 , 2+DELAY, // 8: Power control, 2 args + delay:
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127 | 0x02, // GVDD = 4.7V
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128 | 0x70, // 1.0uA
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129 | 10, // 10 ms delay
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130 | ST7735_PWCTR2 , 1 , // 9: Power control, 1 arg, no delay:
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131 | 0x05, // VGH = 14.7V, VGL = -7.35V
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132 | ST7735_PWCTR3 , 2 , // 10: Power control, 2 args, no delay:
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133 | 0x01, // Opamp current small
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134 | 0x02, // Boost frequency
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135 | ST7735_VMCTR1 , 2+DELAY, // 11: Power control, 2 args + delay:
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136 | 0x3C, // VCOMH = 4V
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137 | 0x38, // VCOML = -1.1V
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138 | 10, // 10 ms delay
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139 | ST7735_PWCTR6 , 2 , // 12: Power control, 2 args, no delay:
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140 | 0x11, 0x15,
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141 | ST7735_GMCTRP1,16 , // 13: Magical unicorn dust, 16 args, no delay:
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142 | 0x09, 0x16, 0x09, 0x20, // (seriously though, not sure what
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143 | 0x21, 0x1B, 0x13, 0x19, // these config values represent)
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144 | 0x17, 0x15, 0x1E, 0x2B,
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145 | 0x04, 0x05, 0x02, 0x0E,
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146 | ST7735_GMCTRN1,16+DELAY, // 14: Sparkles and rainbows, 16 args + delay:
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147 | 0x0B, 0x14, 0x08, 0x1E, // (ditto)
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148 | 0x22, 0x1D, 0x18, 0x1E,
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149 | 0x1B, 0x1A, 0x24, 0x2B,
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150 | 0x06, 0x06, 0x02, 0x0F,
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151 | 10, // 10 ms delay
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152 | ST7735_CASET , 4 , // 15: Column addr set, 4 args, no delay:
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153 | 0x00, 0x02, // XSTART = 2
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154 | 0x00, 0x81, // XEND = 129
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155 | ST7735_RASET , 4 , // 16: Row addr set, 4 args, no delay:
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156 | 0x00, 0x02, // XSTART = 1
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157 | 0x00, 0x81, // XEND = 160
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158 | ST7735_NORON , DELAY, // 17: Normal display on, no args, w/delay
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159 | 10, // 10 ms delay
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160 | ST7735_DISPON , DELAY, // 18: Main screen turn on, no args, w/delay
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161 | 255 }, // 255 = 500 ms delay
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162 |
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163 | Rcmd1[] = { // Init for 7735R, part 1 (red or green tab)
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164 | 15, // 15 commands in list:
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165 | ST7735_SWRESET, DELAY, // 1: Software reset, 0 args, w/delay
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166 | 150, // 150 ms delay
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167 | ST7735_SLPOUT , DELAY, // 2: Out of sleep mode, 0 args, w/delay
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168 | 255, // 500 ms delay
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169 | ST7735_FRMCTR1, 3 , // 3: Frame rate ctrl - normal mode, 3 args:
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170 | 0x01, 0x2C, 0x2D, // Rate = fosc/(1x2+40) * (LINE+2C+2D)
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171 | ST7735_FRMCTR2, 3 , // 4: Frame rate control - idle mode, 3 args:
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172 | 0x01, 0x2C, 0x2D, // Rate = fosc/(1x2+40) * (LINE+2C+2D)
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173 | ST7735_FRMCTR3, 6 , // 5: Frame rate ctrl - partial mode, 6 args:
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174 | 0x01, 0x2C, 0x2D, // Dot inversion mode
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175 | 0x01, 0x2C, 0x2D, // Line inversion mode
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176 | ST7735_INVCTR , 1 , // 6: Display inversion ctrl, 1 arg, no delay:
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177 | 0x07, // No inversion
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178 | ST7735_PWCTR1 , 3 , // 7: Power control, 3 args, no delay:
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179 | 0xA2,
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180 | 0x02, // -4.6V
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181 | 0x84, // AUTO mode
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182 | ST7735_PWCTR2 , 1 , // 8: Power control, 1 arg, no delay:
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183 | 0xC5, // VGH25 = 2.4C VGSEL = -10 VGH = 3 * AVDD
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184 | ST7735_PWCTR3 , 2 , // 9: Power control, 2 args, no delay:
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185 | 0x0A, // Opamp current small
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186 | 0x00, // Boost frequency
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187 | ST7735_PWCTR4 , 2 , // 10: Power control, 2 args, no delay:
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188 | 0x8A, // BCLK/2, Opamp current small & Medium low
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189 | 0x2A,
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190 | ST7735_PWCTR5 , 2 , // 11: Power control, 2 args, no delay:
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191 | 0x8A, 0xEE,
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192 | ST7735_VMCTR1 , 1 , // 12: Power control, 1 arg, no delay:
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193 | 0x0E,
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194 | ST7735_INVOFF , 0 , // 13: Don't invert display, no args, no delay
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195 | ST7735_MADCTL , 1 , // 14: Memory access control (directions), 1 arg:
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196 | 0xC8, // row addr/col addr, bottom to top refresh
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197 | ST7735_COLMOD , 1 , // 15: set color mode, 1 arg, no delay:
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198 | 0x05 }, // 16-bit color
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199 |
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200 | Rcmd2green[] = { // Init for 7735R, part 2 (green tab only)
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201 | 2, // 2 commands in list:
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202 | ST7735_CASET , 4 , // 1: Column addr set, 4 args, no delay:
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203 | 0x00, 0x02, // XSTART = 0
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204 | 0x00, 0x7F+0x02, // XEND = 127
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205 | ST7735_RASET , 4 , // 2: Row addr set, 4 args, no delay:
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206 | 0x00, 0x01, // XSTART = 0
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207 | 0x00, 0x9F+0x01 }, // XEND = 159
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208 | Rcmd2red[] = { // Init for 7735R, part 2 (red tab only)
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209 | 2, // 2 commands in list:
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210 | ST7735_CASET , 4 , // 1: Column addr set, 4 args, no delay:
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211 | 0x00, 0x00, // XSTART = 0
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212 | 0x00, 0x7F, // XEND = 127
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213 | ST7735_RASET , 4 , // 2: Row addr set, 4 args, no delay:
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214 | 0x00, 0x00, // XSTART = 0
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215 | 0x00, 0x9F }, // XEND = 159
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216 |
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217 | Rcmd3[] = { // Init for 7735R, part 3 (red or green tab)
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218 | 4, // 4 commands in list:
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219 | ST7735_GMCTRP1, 16 , // 1: Magical unicorn dust, 16 args, no delay:
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220 | 0x02, 0x1c, 0x07, 0x12,
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221 | 0x37, 0x32, 0x29, 0x2d,
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222 | 0x29, 0x25, 0x2B, 0x39,
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223 | 0x00, 0x01, 0x03, 0x10,
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224 | ST7735_GMCTRN1, 16 , // 2: Sparkles and rainbows, 16 args, no delay:
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225 | 0x03, 0x1d, 0x07, 0x06,
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226 | 0x2E, 0x2C, 0x29, 0x2D,
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227 | 0x2E, 0x2E, 0x37, 0x3F,
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228 | 0x00, 0x00, 0x02, 0x10,
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229 | ST7735_NORON , DELAY, // 3: Normal display on, no args, w/delay
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230 | 10, // 10 ms delay
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231 | ST7735_DISPON , DELAY, // 4: Main screen turn on, no args w/delay
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232 | 100 }, // 100 ms delay
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233 | Gcmd[] = { // Initialization commands for 7735B screens
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234 | 19, // 18 commands in list:
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235 | ST7735_SWRESET, DELAY, // 1: Software reset, no args, w/delay
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236 | 50, // 50 ms delay
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237 | ST7735_SLPOUT , DELAY, // 2: Out of sleep mode, no args, w/delay
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238 | 100, // 255 = 500 ms delay
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239 | 0x26 , 1, // 3: Set default gamma
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240 | 0x04, // 16-bit color
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241 | 0xb1, 2, // 4: Frame Rate
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242 | 0x0b,
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243 | 0x14,
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244 | 0xc0, 2, // 5: VRH1[4:0] & VC[2:0]
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245 | 0x08,
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246 | 0x00,
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247 | 0xc1, 1, // 6: BT[2:0]
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248 | 0x05,
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249 | 0xc5, 2, // 7: VMH[6:0] & VML[6:0]
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250 | 0x41,
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251 | 0x30,
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252 | 0xc7, 1, // 8: LCD Driving control
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253 | 0xc1,
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254 | 0xEC, 1, // 9: Set pumping color freq
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255 | 0x1b,
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256 | 0x3a , 1 + DELAY, // 10: Set color format
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257 | 0x55, // 16-bit color
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258 | 100,
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259 | 0x2a, 4, // 11: Set Column Address
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260 | 0x00,
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261 | 0x00,
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262 | 0x00,
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263 | 0x7f,
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264 | 0x2b, 4, // 12: Set Page Address
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265 | 0x00,
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266 | 0x00,
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267 | 0x00,
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268 | 0x9f,
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269 | 0x36, 1, // 12+1: Set Scanning Direction
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270 | 0xc8,
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271 | 0xb7, 1, // 14: Set Source Output Direciton
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272 | 0x00,
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273 | 0xf2, 1, // 15: Enable Gamma bit
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274 | 0x00,
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275 | 0xe0, 15 + DELAY, // 16: magic
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276 | 0x28, 0x24, 0x22, 0x31,
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277 | 0x2b, 0x0e, 0x53, 0xa5,
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278 | 0x42, 0x16, 0x18, 0x12,
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279 | 0x1a, 0x14, 0x03,
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280 | 50,
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281 | 0xe1, 15 + DELAY, // 17: more magic
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282 | 0x17, 0x1b, 0x1d, 0x0e,
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283 | 0x14, 0x11, 0x2c, 0xa5,
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284 | 0x3d, 0x09, 0x27, 0x2d,
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285 | 0x25, 0x2b, 0x3c,
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286 | 50,
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287 | ST7735_NORON , DELAY, // 17: Normal display on, no args, w/delay
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288 | 10, // 10 ms delay
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289 | ST7735_DISPON , DELAY, // 18: Main screen turn on, no args, w/delay
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290 | 255 }; // 255 = 500 ms delay
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291 |
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292 |
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293 |
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294 | // Companion code to the above tables. Reads and issues
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295 | // a series of LCD commands stored in PROGMEM byte array.
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296 | void Adafruit_ST7735::commandList(const uint8_t *addr) {
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297 |
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298 | uint8_t numCommands, numArgs;
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299 | uint16_t ms;
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300 |
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301 | numCommands = pgm_read_byte(addr++); // Number of commands to follow
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302 | while(numCommands--) { // For each command...
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303 | writecommand(pgm_read_byte(addr++)); // Read, issue command
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304 | numArgs = pgm_read_byte(addr++); // Number of args to follow
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305 | ms = numArgs & DELAY; // If hibit set, delay follows args
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306 | numArgs &= ~DELAY; // Mask out delay bit
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307 | while(numArgs--) { // For each argument...
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308 | writedata(pgm_read_byte(addr++)); // Read, issue argument
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309 | }
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310 |
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311 | if(ms) {
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312 | ms = pgm_read_byte(addr++); // Read post-command delay time (ms)
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313 | if(ms == 255) ms = 500; // If 255, delay for 500 ms
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314 | delay(ms);
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315 | }
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316 | }
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317 | }
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318 |
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319 |
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320 | // Initialization code common to both 'B' and 'R' type displays
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321 | void Adafruit_ST7735::commonInit(const uint8_t *cmdList) {
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322 |
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323 | colstart = rowstart = 0; // May be overridden in init func
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324 |
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325 | pinMode(_rs, OUTPUT);
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326 | pinMode(_cs, OUTPUT);
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327 | csport = portOutputRegister(digitalPinToPort(_cs));
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328 | cspinmask = digitalPinToBitMask(_cs);
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329 | rsport = portOutputRegister(digitalPinToPort(_rs));
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330 | rspinmask = digitalPinToBitMask(_rs);
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331 |
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332 | if(hwSPI) { // Using hardware SPI
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333 | SPI.begin();
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334 | #if defined(ARDUINO_ARCH_SAMD)
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335 | SPI.setClockDivider(24); // 4 MHz (half speed)
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336 | #else
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337 | SPI.setClockDivider(SPI_CLOCK_DIV4); // 4 MHz (half speed)
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338 | #endif
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339 | SPI.setBitOrder(MSBFIRST);
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340 | SPI.setDataMode(SPI_MODE0);
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341 | } else {
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342 | pinMode(_sclk, OUTPUT);
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343 | pinMode(_sid , OUTPUT);
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344 | clkport = portOutputRegister(digitalPinToPort(_sclk));
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345 | clkpinmask = digitalPinToBitMask(_sclk);
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346 | dataport = portOutputRegister(digitalPinToPort(_sid));
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347 | datapinmask = digitalPinToBitMask(_sid);
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348 | *clkport &= ~clkpinmask;
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349 | *dataport &= ~datapinmask;
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350 | }
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351 |
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352 | // toggle RST low to reset; CS low so it'll listen to us
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353 | *csport &= ~cspinmask;
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354 | if (_rst) {
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355 | pinMode(_rst, OUTPUT);
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356 | digitalWrite(_rst, HIGH);
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357 | delay(500);
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358 | digitalWrite(_rst, LOW);
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359 | delay(500);
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360 | digitalWrite(_rst, HIGH);
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361 | delay(500);
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362 | }
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363 |
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364 | if(cmdList) commandList(cmdList);
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365 | }
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366 |
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367 |
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368 | // Initialization for ST7735B screens
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369 | void Adafruit_ST7735::initB(void) {
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370 | commonInit(Bcmd);
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371 | }
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372 |
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373 |
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374 | // Initialization for ST7735B screens
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375 | void Adafruit_ST7735::initG(void) {
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376 | commonInit(Gcmd);
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377 | }
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378 |
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379 |
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380 | // Initialization for ST7735R screens (green or red tabs)
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381 | void Adafruit_ST7735::initR(uint8_t options) {
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382 | commonInit(Rcmd1);
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383 | if(options == INITR_GREENTAB) {
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384 | commandList(Rcmd2green);
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385 | colstart = 2;
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386 | rowstart = 1;
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387 | } else {
|
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388 | // colstart, rowstart left at default '0' values
|
---|
389 | commandList(Rcmd2red);
|
---|
390 | }
|
---|
391 | commandList(Rcmd3);
|
---|
392 | tabcolor = options;
|
---|
393 | }
|
---|
394 |
|
---|
395 |
|
---|
396 | void Adafruit_ST7735::setAddrWindow(uint8_t x0, uint8_t y0, uint8_t x1,
|
---|
397 | uint8_t y1) {
|
---|
398 |
|
---|
399 | writecommand(ST7735_CASET); // Column addr set
|
---|
400 | writedata(0x00);
|
---|
401 | writedata(x0+colstart); // XSTART
|
---|
402 | writedata(0x00);
|
---|
403 | writedata(x1+colstart); // XEND
|
---|
404 |
|
---|
405 | writecommand(ST7735_RASET); // Row addr set
|
---|
406 | writedata(0x00);
|
---|
407 | writedata(y0+rowstart); // YSTART
|
---|
408 | writedata(0x00);
|
---|
409 | writedata(y1+rowstart); // YEND
|
---|
410 |
|
---|
411 | writecommand(ST7735_RAMWR); // write to RAM
|
---|
412 | }
|
---|
413 |
|
---|
414 |
|
---|
415 | void Adafruit_ST7735::pushColor(uint16_t color) {
|
---|
416 | *rsport |= rspinmask;
|
---|
417 | *csport &= ~cspinmask;
|
---|
418 |
|
---|
419 | if (tabcolor == INITR_BLACKTAB) color = swapcolor(color);
|
---|
420 | spiwrite(color >> 8);
|
---|
421 | spiwrite(color);
|
---|
422 |
|
---|
423 | *csport |= cspinmask;
|
---|
424 | }
|
---|
425 |
|
---|
426 | void Adafruit_ST7735::drawPixel(int16_t x, int16_t y, uint16_t color) {
|
---|
427 |
|
---|
428 | if((x < 0) ||(x >= _width) || (y < 0) || (y >= _height)) return;
|
---|
429 |
|
---|
430 | setAddrWindow(x,y,x+1,y+1);
|
---|
431 |
|
---|
432 | *rsport |= rspinmask;
|
---|
433 | *csport &= ~cspinmask;
|
---|
434 |
|
---|
435 | if (tabcolor == INITR_BLACKTAB) color = swapcolor(color);
|
---|
436 |
|
---|
437 | spiwrite(color >> 8);
|
---|
438 | spiwrite(color);
|
---|
439 |
|
---|
440 | *csport |= cspinmask;
|
---|
441 | }
|
---|
442 |
|
---|
443 |
|
---|
444 | void Adafruit_ST7735::drawFastVLine(int16_t x, int16_t y, int16_t h,
|
---|
445 | uint16_t color) {
|
---|
446 |
|
---|
447 | // Rudimentary clipping
|
---|
448 | if((x >= _width) || (y >= _height)) return;
|
---|
449 | if((y+h-1) >= _height) h = _height-y;
|
---|
450 | setAddrWindow(x, y, x, y+h-1);
|
---|
451 |
|
---|
452 | if (tabcolor == INITR_BLACKTAB) color = swapcolor(color);
|
---|
453 |
|
---|
454 | uint8_t hi = color >> 8, lo = color;
|
---|
455 | *rsport |= rspinmask;
|
---|
456 | *csport &= ~cspinmask;
|
---|
457 | while (h--) {
|
---|
458 | spiwrite(hi);
|
---|
459 | spiwrite(lo);
|
---|
460 | }
|
---|
461 | *csport |= cspinmask;
|
---|
462 | }
|
---|
463 |
|
---|
464 |
|
---|
465 | void Adafruit_ST7735::drawFastHLine(int16_t x, int16_t y, int16_t w,
|
---|
466 | uint16_t color) {
|
---|
467 |
|
---|
468 | // Rudimentary clipping
|
---|
469 | if((x >= _width) || (y >= _height)) return;
|
---|
470 | if((x+w-1) >= _width) w = _width-x;
|
---|
471 | setAddrWindow(x, y, x+w-1, y);
|
---|
472 |
|
---|
473 | if (tabcolor == INITR_BLACKTAB) color = swapcolor(color);
|
---|
474 |
|
---|
475 | uint8_t hi = color >> 8, lo = color;
|
---|
476 | *rsport |= rspinmask;
|
---|
477 | *csport &= ~cspinmask;
|
---|
478 | while (w--) {
|
---|
479 | spiwrite(hi);
|
---|
480 | spiwrite(lo);
|
---|
481 | }
|
---|
482 | *csport |= cspinmask;
|
---|
483 | }
|
---|
484 |
|
---|
485 |
|
---|
486 |
|
---|
487 | void Adafruit_ST7735::fillScreen(uint16_t color) {
|
---|
488 | fillRect(0, 0, _width, _height, color);
|
---|
489 | }
|
---|
490 |
|
---|
491 |
|
---|
492 |
|
---|
493 | // fill a rectangle
|
---|
494 | void Adafruit_ST7735::fillRect(int16_t x, int16_t y, int16_t w, int16_t h,
|
---|
495 | uint16_t color) {
|
---|
496 |
|
---|
497 | // rudimentary clipping (drawChar w/big text requires this)
|
---|
498 | if((x >= _width) || (y >= _height)) return;
|
---|
499 | if((x + w - 1) >= _width) w = _width - x;
|
---|
500 | if((y + h - 1) >= _height) h = _height - y;
|
---|
501 |
|
---|
502 | if (tabcolor == INITR_BLACKTAB) color = swapcolor(color);
|
---|
503 |
|
---|
504 | setAddrWindow(x, y, x+w-1, y+h-1);
|
---|
505 |
|
---|
506 | uint8_t hi = color >> 8, lo = color;
|
---|
507 | *rsport |= rspinmask;
|
---|
508 | *csport &= ~cspinmask;
|
---|
509 | for(y=h; y>0; y--) {
|
---|
510 | for(x=w; x>0; x--) {
|
---|
511 | spiwrite(hi);
|
---|
512 | spiwrite(lo);
|
---|
513 | }
|
---|
514 | }
|
---|
515 |
|
---|
516 | *csport |= cspinmask;
|
---|
517 | }
|
---|
518 |
|
---|
519 |
|
---|
520 | #define MADCTL_MY 0x80
|
---|
521 | #define MADCTL_MX 0x40
|
---|
522 | #define MADCTL_MV 0x20
|
---|
523 | #define MADCTL_ML 0x10
|
---|
524 | #define MADCTL_RGB 0x08
|
---|
525 | #define MADCTL_MH 0x04
|
---|
526 |
|
---|
527 | void Adafruit_ST7735::setRotation(uint8_t m) {
|
---|
528 |
|
---|
529 | writecommand(ST7735_MADCTL);
|
---|
530 | rotation = m % 4; // can't be higher than 3
|
---|
531 | switch (rotation) {
|
---|
532 | case 0:
|
---|
533 | writedata(MADCTL_MX | MADCTL_MY | MADCTL_RGB);
|
---|
534 | _width = ST7735_TFTWIDTH;
|
---|
535 | _height = ST7735_TFTHEIGHT;
|
---|
536 | break;
|
---|
537 | case 1:
|
---|
538 | writedata(MADCTL_MY | MADCTL_MV | MADCTL_RGB);
|
---|
539 | _width = ST7735_TFTHEIGHT;
|
---|
540 | _height = ST7735_TFTWIDTH;
|
---|
541 | break;
|
---|
542 | case 2:
|
---|
543 | writedata(MADCTL_RGB);
|
---|
544 | _width = ST7735_TFTWIDTH;
|
---|
545 | _height = ST7735_TFTHEIGHT;
|
---|
546 | break;
|
---|
547 | case 3:
|
---|
548 | writedata(MADCTL_MX | MADCTL_MV | MADCTL_RGB);
|
---|
549 | _width = ST7735_TFTHEIGHT;
|
---|
550 | _height = ST7735_TFTWIDTH;
|
---|
551 | break;
|
---|
552 | }
|
---|
553 | }
|
---|
554 |
|
---|
555 |
|
---|
556 | void Adafruit_ST7735::invertDisplay(boolean i) {
|
---|
557 | writecommand(i ? ST7735_INVON : ST7735_INVOFF);
|
---|
558 | }
|
---|
559 |
|
---|
560 |
|
---|
561 | ////////// stuff not actively being used, but kept for posterity
|
---|
562 | /*
|
---|
563 |
|
---|
564 | uint8_t Adafruit_ST7735::spiread(void) {
|
---|
565 | uint8_t r = 0;
|
---|
566 | if (_sid > 0) {
|
---|
567 | r = shiftIn(_sid, _sclk, MSBFIRST);
|
---|
568 | } else {
|
---|
569 | //SID_DDR &= ~_BV(SID);
|
---|
570 | //int8_t i;
|
---|
571 | //for (i=7; i>=0; i--) {
|
---|
572 | // SCLK_PORT &= ~_BV(SCLK);
|
---|
573 | // r <<= 1;
|
---|
574 | // r |= (SID_PIN >> SID) & 0x1;
|
---|
575 | // SCLK_PORT |= _BV(SCLK);
|
---|
576 | //}
|
---|
577 | //SID_DDR |= _BV(SID);
|
---|
578 |
|
---|
579 | }
|
---|
580 | return r;
|
---|
581 | }
|
---|
582 |
|
---|
583 |
|
---|
584 | void Adafruit_ST7735::dummyclock(void) {
|
---|
585 |
|
---|
586 | if (_sid > 0) {
|
---|
587 | digitalWrite(_sclk, LOW);
|
---|
588 | digitalWrite(_sclk, HIGH);
|
---|
589 | } else {
|
---|
590 | // SCLK_PORT &= ~_BV(SCLK);
|
---|
591 | //SCLK_PORT |= _BV(SCLK);
|
---|
592 | }
|
---|
593 | }
|
---|
594 | uint8_t Adafruit_ST7735::readdata(void) {
|
---|
595 | *portOutputRegister(rsport) |= rspin;
|
---|
596 |
|
---|
597 | *portOutputRegister(csport) &= ~ cspin;
|
---|
598 |
|
---|
599 | uint8_t r = spiread();
|
---|
600 |
|
---|
601 | *portOutputRegister(csport) |= cspin;
|
---|
602 |
|
---|
603 | return r;
|
---|
604 |
|
---|
605 | }
|
---|
606 |
|
---|
607 | uint8_t Adafruit_ST7735::readcommand8(uint8_t c) {
|
---|
608 | digitalWrite(_rs, LOW);
|
---|
609 |
|
---|
610 | *portOutputRegister(csport) &= ~ cspin;
|
---|
611 |
|
---|
612 | spiwrite(c);
|
---|
613 |
|
---|
614 | digitalWrite(_rs, HIGH);
|
---|
615 | pinMode(_sid, INPUT); // input!
|
---|
616 | digitalWrite(_sid, LOW); // low
|
---|
617 | spiread();
|
---|
618 | uint8_t r = spiread();
|
---|
619 |
|
---|
620 |
|
---|
621 | *portOutputRegister(csport) |= cspin;
|
---|
622 |
|
---|
623 |
|
---|
624 | pinMode(_sid, OUTPUT); // back to output
|
---|
625 | return r;
|
---|
626 | }
|
---|
627 |
|
---|
628 |
|
---|
629 | uint16_t Adafruit_ST7735::readcommand16(uint8_t c) {
|
---|
630 | digitalWrite(_rs, LOW);
|
---|
631 | if (_cs)
|
---|
632 | digitalWrite(_cs, LOW);
|
---|
633 |
|
---|
634 | spiwrite(c);
|
---|
635 | pinMode(_sid, INPUT); // input!
|
---|
636 | uint16_t r = spiread();
|
---|
637 | r <<= 8;
|
---|
638 | r |= spiread();
|
---|
639 | if (_cs)
|
---|
640 | digitalWrite(_cs, HIGH);
|
---|
641 |
|
---|
642 | pinMode(_sid, OUTPUT); // back to output
|
---|
643 | return r;
|
---|
644 | }
|
---|
645 |
|
---|
646 | uint32_t Adafruit_ST7735::readcommand32(uint8_t c) {
|
---|
647 | digitalWrite(_rs, LOW);
|
---|
648 | if (_cs)
|
---|
649 | digitalWrite(_cs, LOW);
|
---|
650 | spiwrite(c);
|
---|
651 | pinMode(_sid, INPUT); // input!
|
---|
652 |
|
---|
653 | dummyclock();
|
---|
654 | dummyclock();
|
---|
655 |
|
---|
656 | uint32_t r = spiread();
|
---|
657 | r <<= 8;
|
---|
658 | r |= spiread();
|
---|
659 | r <<= 8;
|
---|
660 | r |= spiread();
|
---|
661 | r <<= 8;
|
---|
662 | r |= spiread();
|
---|
663 | if (_cs)
|
---|
664 | digitalWrite(_cs, HIGH);
|
---|
665 |
|
---|
666 | pinMode(_sid, OUTPUT); // back to output
|
---|
667 | return r;
|
---|
668 | }
|
---|
669 |
|
---|
670 | */
|
---|