Oliver Broad / Adafruit-GP9002-Grayscale-VFD-Library

ADAFRUIT GP9002 VFD Driver supporting grayscale display, requires GFX-Library Note no "invert" function, also fixed timing issue in "begin"

Dependencies:   bitreversetable256

Dependents:   GP9002af_gray

Fork of Adafruit-GP9002-Graphic-VFD-Library by Oliver Broad

Adafruit_GP9002.cpp@3:0a38cff87d2e, 2016-05-09 (annotated)

Committer:
oliverb
Date:
Mon May 09 09:29:03 2016 +0000
Revision:
3:0a38cff87d2e
Parent:
2:ecf13e85f0fa
Child:
4:dc3e19dfd45d
Moved the bit reverse LUT out

Who changed what in which revision?

UserRevisionLine numberNew contents of line
oliverb 0:e760d4cfabe4 1 /*#include <avr/pgmspace.h>
oliverb 0:e760d4cfabe4 2 #include <util/delay.h>
oliverb 0:e760d4cfabe4 3 #include <stdlib.h>*/
oliverb 0:e760d4cfabe4 4
oliverb 0:e760d4cfabe4 5 #include "Adafruit_GFX.h"
oliverb 0:e760d4cfabe4 6 #include "Adafruit_GP9002.h"
oliverb 0:e760d4cfabe4 7 #include "glcdfont.c"
oliverb 3:0a38cff87d2e 8 #include "bitreversetable256.h"
oliverb 0:e760d4cfabe4 9
oliverb 0:e760d4cfabe4 10
oliverb 0:e760d4cfabe4 11
oliverb 0:e760d4cfabe4 12 /*
oliverb 0:e760d4cfabe4 13 Adafruit_GP9002::Adafruit_GP9002(int8_t SCLK, int8_t MISO, int8_t MOSI,
oliverb 0:e760d4cfabe4 14 int8_t CS, int8_t DC) : Adafruit_GFX(128, 64) {
oliverb 0:e760d4cfabe4 15 _sclk = SCLK;
oliverb 0:e760d4cfabe4 16 _miso = MISO;
oliverb 0:e760d4cfabe4 17 _mosi = MOSI;
oliverb 0:e760d4cfabe4 18 _cs = CS;
oliverb 0:e760d4cfabe4 19 _dc = DC;
oliverb 0:e760d4cfabe4 20 hwSPI = false;
oliverb 0:e760d4cfabe4 21 }
oliverb 0:e760d4cfabe4 22
oliverb 0:e760d4cfabe4 23 Adafruit_GP9002::Adafruit_GP9002(int8_t CS, int8_t DC) :
oliverb 0:e760d4cfabe4 24 Adafruit_GFX(128, 64) {
oliverb 0:e760d4cfabe4 25 _sclk = -1;
oliverb 0:e760d4cfabe4 26 _miso = -1;
oliverb 0:e760d4cfabe4 27 _mosi = -1;
oliverb 0:e760d4cfabe4 28 _cs = CS;
oliverb 0:e760d4cfabe4 29 _dc = DC;
oliverb 0:e760d4cfabe4 30 hwSPI = true;
oliverb 0:e760d4cfabe4 31 }
oliverb 0:e760d4cfabe4 32 */
oliverb 0:e760d4cfabe4 33 Adafruit_GP9002::Adafruit_GP9002(SPI &SPIport, PinName CS, PinName DC): Adafruit_GFX(128, 64), _spi(SPIport), _dc(DC), _cs(CS,1){} ;
oliverb 0:e760d4cfabe4 34
oliverb 0:e760d4cfabe4 35
oliverb 0:e760d4cfabe4 36 void Adafruit_GP9002::begin(void) {
oliverb 0:e760d4cfabe4 37 // set pin directions
oliverb 0:e760d4cfabe4 38 // pinMode(_dc, OUTPUT);
oliverb 0:e760d4cfabe4 39 // pinMode(_cs, OUTPUT);
oliverb 0:e760d4cfabe4 40
oliverb 0:e760d4cfabe4 41 /* if (! hwSPI) {
oliverb 0:e760d4cfabe4 42 pinMode(_mosi, OUTPUT);
oliverb 0:e760d4cfabe4 43 pinMode(_miso, INPUT);
oliverb 0:e760d4cfabe4 44 pinMode(_sclk, OUTPUT);
oliverb 0:e760d4cfabe4 45
oliverb 0:e760d4cfabe4 46 clkport = portOutputRegister(digitalPinToPort(_sclk));
oliverb 0:e760d4cfabe4 47 clkpinmask = digitalPinToBitMask(_sclk);
oliverb 0:e760d4cfabe4 48 mosiport = portOutputRegister(digitalPinToPort(_mosi));
oliverb 0:e760d4cfabe4 49 mosipinmask = digitalPinToBitMask(_mosi);
oliverb 0:e760d4cfabe4 50 misopin = portInputRegister(digitalPinToPort(_miso));
oliverb 0:e760d4cfabe4 51 misopinmask = digitalPinToBitMask(_miso);
oliverb 0:e760d4cfabe4 52 } else {
oliverb 0:e760d4cfabe4 53 */
oliverb 0:e760d4cfabe4 54 //SPI.begin();
oliverb 0:e760d4cfabe4 55 // SPI.setClockDivider(SPI_CLOCK_DIV4);
oliverb 0:e760d4cfabe4 56 // SPI.setBitOrder(MSBFIRST);
oliverb 0:e760d4cfabe4 57 //SPI.setDataMode(SPI_MODE0);
oliverb 0:e760d4cfabe4 58 _spi.format(8,3); // I'm sure this is a mode 3 device
oliverb 0:e760d4cfabe4 59 _spi.frequency(2000000); //
oliverb 0:e760d4cfabe4 60 // }
oliverb 0:e760d4cfabe4 61 /*
oliverb 0:e760d4cfabe4 62 csport = portOutputRegister(digitalPinToPort(_cs));
oliverb 0:e760d4cfabe4 63 cspinmask = digitalPinToBitMask(_cs);
oliverb 0:e760d4cfabe4 64 dcport = portOutputRegister(digitalPinToPort(_dc));
oliverb 0:e760d4cfabe4 65 dcpinmask = digitalPinToBitMask(_dc);
oliverb 0:e760d4cfabe4 66 */
oliverb 0:e760d4cfabe4 67
oliverb 1:09dc95ba8711 68 command(GP9002_DISPLAYSOFF);
oliverb 1:09dc95ba8711 69 // command(GP9002_DISPLAY1ON); //defer till display clear
oliverb 0:e760d4cfabe4 70 command(GP9002_DISPLAY);
oliverb 1:09dc95ba8711 71 dataWrite(GP9002_DISPLAY_GRAYSCALE);
oliverb 0:e760d4cfabe4 72 command(GP9002_LOWERADDR1);
oliverb 0:e760d4cfabe4 73 dataWrite(0x0);
oliverb 0:e760d4cfabe4 74 command(GP9002_HIGHERADDR1);
oliverb 0:e760d4cfabe4 75 dataWrite(0x0);
oliverb 1:09dc95ba8711 76 // command(GP9002_LOWERADDR2);
oliverb 1:09dc95ba8711 77 // dataWrite(0x0);
oliverb 1:09dc95ba8711 78 // command(GP9002_HIGHERADDR2);
oliverb 1:09dc95ba8711 79 // dataWrite(0x4);
oliverb 1:09dc95ba8711 80 // command(GP9002_OR); //contradicted by display1on, so no
oliverb 0:e760d4cfabe4 81 command(GP9002_CLEARSCREEN);
oliverb 1:09dc95ba8711 82 wait_us(500);
oliverb 0:e760d4cfabe4 83 command(GP9002_DISPLAY1ON);
oliverb 0:e760d4cfabe4 84
oliverb 0:e760d4cfabe4 85 // hold the address so we can read and then write
oliverb 0:e760d4cfabe4 86 command(GP9002_ADDRHELD);
oliverb 2:ecf13e85f0fa 87 addrcache=0; //known because we just set the address
oliverb 2:ecf13e85f0fa 88 bytecache=0; //known because display cleared
oliverb 0:e760d4cfabe4 89 }
oliverb 0:e760d4cfabe4 90
oliverb 0:e760d4cfabe4 91
oliverb 0:e760d4cfabe4 92
oliverb 0:e760d4cfabe4 93 // updated high speed drawing!
oliverb 0:e760d4cfabe4 94 void Adafruit_GP9002::drawFastVLine(int16_t x, int16_t orig_y, int16_t h, uint16_t color) {
oliverb 0:e760d4cfabe4 95 if ((x < 0) || (x >= width()) || (orig_y >= height())) return;
oliverb 0:e760d4cfabe4 96 //if ((orig_y+h) >= height())
oliverb 0:e760d4cfabe4 97 // h = height() - orig_y -1;
oliverb 0:e760d4cfabe4 98
oliverb 0:e760d4cfabe4 99 //drawLine(x, orig_y, x, orig_y+h, color); return;
oliverb 0:e760d4cfabe4 100
oliverb 0:e760d4cfabe4 101 while (h) {
oliverb 1:09dc95ba8711 102 if ((h >= 4) && ((orig_y) % 4 == 0))
oliverb 0:e760d4cfabe4 103 break;
oliverb 0:e760d4cfabe4 104 drawPixel(x, orig_y, color);
oliverb 0:e760d4cfabe4 105 orig_y++;
oliverb 0:e760d4cfabe4 106 h--;
oliverb 0:e760d4cfabe4 107 }
oliverb 0:e760d4cfabe4 108
oliverb 1:09dc95ba8711 109 if (h >= 4) {
oliverb 0:e760d4cfabe4 110 // calculate addr
oliverb 0:e760d4cfabe4 111 uint16_t addr = 0;
oliverb 1:09dc95ba8711 112 addr = x*16;
oliverb 0:e760d4cfabe4 113 // uint16_t y = orig_y+h-8;
oliverb 0:e760d4cfabe4 114 uint16_t y=orig_y;
oliverb 0:e760d4cfabe4 115 // y = 63 - y; //why?
oliverb 1:09dc95ba8711 116 addr += y/4;
oliverb 0:e760d4cfabe4 117
oliverb 0:e760d4cfabe4 118 // Serial.println(addr, HEX); ///debug line ?
oliverb 2:ecf13e85f0fa 119 addrcache=-1; //invalidate the cache
oliverb 0:e760d4cfabe4 120 command(GP9002_ADDRINCR);
oliverb 0:e760d4cfabe4 121 command(GP9002_ADDRL);
oliverb 0:e760d4cfabe4 122 dataWrite(addr & 0xFF);
oliverb 0:e760d4cfabe4 123 command(GP9002_ADDRH);
oliverb 0:e760d4cfabe4 124 dataWrite(addr >> 8);
oliverb 0:e760d4cfabe4 125 command(GP9002_DATAWRITE);
oliverb 0:e760d4cfabe4 126
oliverb 1:09dc95ba8711 127 while (h >= 4) {
oliverb 0:e760d4cfabe4 128 // draw 8 pixels at once!
oliverb 0:e760d4cfabe4 129 if (color)
oliverb 1:09dc95ba8711 130 dataWrite(0b01010101 * (color & 3));
oliverb 0:e760d4cfabe4 131 else
oliverb 0:e760d4cfabe4 132 dataWrite(0x00);
oliverb 1:09dc95ba8711 133 h -= 4;
oliverb 1:09dc95ba8711 134 orig_y += 4;
oliverb 0:e760d4cfabe4 135 }
oliverb 0:e760d4cfabe4 136 }
oliverb 0:e760d4cfabe4 137 while (h+1) {
oliverb 0:e760d4cfabe4 138 drawPixel(x, orig_y-1, color);
oliverb 0:e760d4cfabe4 139 orig_y++;
oliverb 0:e760d4cfabe4 140 h--;
oliverb 0:e760d4cfabe4 141 }
oliverb 0:e760d4cfabe4 142
oliverb 0:e760d4cfabe4 143 }
oliverb 0:e760d4cfabe4 144
oliverb 0:e760d4cfabe4 145 // the most basic function, set a single pixel
oliverb 0:e760d4cfabe4 146 void Adafruit_GP9002::drawPixel(int16_t x, int16_t y, uint16_t color) {
oliverb 0:e760d4cfabe4 147 if ((x < 0) || (x >= width()) || (y < 0) || (y >= height()))
oliverb 0:e760d4cfabe4 148 return;
oliverb 0:e760d4cfabe4 149
oliverb 2:ecf13e85f0fa 150 //uint8_t p;
oliverb 0:e760d4cfabe4 151
oliverb 0:e760d4cfabe4 152 // calculate addr
oliverb 0:e760d4cfabe4 153 uint16_t addr = 0;
oliverb 1:09dc95ba8711 154 addr = x*16;
oliverb 0:e760d4cfabe4 155 // y = 63 - y; //why
oliverb 1:09dc95ba8711 156 addr += y/4;
oliverb 2:ecf13e85f0fa 157 if (addr != addrcache)
oliverb 2:ecf13e85f0fa 158 {
oliverb 2:ecf13e85f0fa 159 addrcache=addr;
oliverb 2:ecf13e85f0fa 160 command(GP9002_ADDRHELD);
oliverb 2:ecf13e85f0fa 161 command(GP9002_ADDRL);
oliverb 2:ecf13e85f0fa 162 dataWrite(addr & 0xFF);
oliverb 2:ecf13e85f0fa 163 command(GP9002_ADDRH);
oliverb 2:ecf13e85f0fa 164 dataWrite(addr >> 8);
oliverb 2:ecf13e85f0fa 165 command(GP9002_DATAREAD);
oliverb 2:ecf13e85f0fa 166 dataRead();
oliverb 2:ecf13e85f0fa 167 bytecache = dataRead();
oliverb 2:ecf13e85f0fa 168 }
oliverb 1:09dc95ba8711 169 y=0xc0>>((y & 3) <<1);
oliverb 1:09dc95ba8711 170 color*=0b01010101;
oliverb 0:e760d4cfabe4 171 //Serial.println(p, HEX);
oliverb 2:ecf13e85f0fa 172 bytecache &= ~y;
oliverb 0:e760d4cfabe4 173
oliverb 2:ecf13e85f0fa 174 bytecache |= color&y;
oliverb 1:09dc95ba8711 175
oliverb 0:e760d4cfabe4 176 command(GP9002_DATAWRITE);
oliverb 2:ecf13e85f0fa 177 dataWrite(bytecache);
oliverb 0:e760d4cfabe4 178 }
oliverb 0:e760d4cfabe4 179
oliverb 0:e760d4cfabe4 180
oliverb 1:09dc95ba8711 181 /* forbidden
oliverb 0:e760d4cfabe4 182 void Adafruit_GP9002::invert(bool i) {
oliverb 0:e760d4cfabe4 183 // This is kinda clumsy but it does work
oliverb 0:e760d4cfabe4 184 // fill the opposite screen with all on pixels so we can invert!
oliverb 0:e760d4cfabe4 185 uint16_t addr = 0x400;
oliverb 0:e760d4cfabe4 186
oliverb 0:e760d4cfabe4 187 command(GP9002_ADDRINCR);
oliverb 0:e760d4cfabe4 188 command(GP9002_ADDRL);
oliverb 0:e760d4cfabe4 189 dataWrite(addr & 0xFF);
oliverb 0:e760d4cfabe4 190 command(GP9002_ADDRH);
oliverb 0:e760d4cfabe4 191 dataWrite(addr >> 8);
oliverb 0:e760d4cfabe4 192 command(GP9002_DATAWRITE);
oliverb 0:e760d4cfabe4 193
oliverb 0:e760d4cfabe4 194 if (i) {
oliverb 0:e760d4cfabe4 195 while (addr < 0x0800) {
oliverb 0:e760d4cfabe4 196 dataWrite(0xFF);
oliverb 0:e760d4cfabe4 197 addr++;
oliverb 0:e760d4cfabe4 198 }
oliverb 0:e760d4cfabe4 199 command(GP9002_XOR);
oliverb 0:e760d4cfabe4 200 } else {
oliverb 0:e760d4cfabe4 201 while (addr < 0x0800) {
oliverb 0:e760d4cfabe4 202 dataWrite(0x00);
oliverb 0:e760d4cfabe4 203 addr++;
oliverb 0:e760d4cfabe4 204 }
oliverb 0:e760d4cfabe4 205 command(GP9002_OR);
oliverb 0:e760d4cfabe4 206 }
oliverb 0:e760d4cfabe4 207 command(GP9002_ADDRHELD);
oliverb 0:e760d4cfabe4 208
oliverb 0:e760d4cfabe4 209 }
oliverb 1:09dc95ba8711 210 */
oliverb 0:e760d4cfabe4 211 /*
oliverb 0:e760d4cfabe4 212 void Adafruit_GP9002::slowSPIwrite(uint8_t d) {
oliverb 0:e760d4cfabe4 213 for (uint8_t i=0; i<8; i++) {
oliverb 0:e760d4cfabe4 214 digitalWrite(_sclk, LOW);
oliverb 0:e760d4cfabe4 215 if (d & _BV(i)) {
oliverb 0:e760d4cfabe4 216 digitalWrite(_mosi, HIGH);
oliverb 0:e760d4cfabe4 217 } else {
oliverb 0:e760d4cfabe4 218 digitalWrite(_mosi, LOW);
oliverb 0:e760d4cfabe4 219 }
oliverb 0:e760d4cfabe4 220 digitalWrite(_sclk, HIGH);
oliverb 0:e760d4cfabe4 221 }
oliverb 0:e760d4cfabe4 222 }
oliverb 0:e760d4cfabe4 223 */
oliverb 0:e760d4cfabe4 224 /*
oliverb 0:e760d4cfabe4 225 inline void Adafruit_GP9002::fastSPIwrite(uint8_t d) {
oliverb 0:e760d4cfabe4 226 if (hwSPI) {
oliverb 0:e760d4cfabe4 227 SPDR = d;
oliverb 0:e760d4cfabe4 228 while(!(SPSR & _BV(SPIF)));
oliverb 0:e760d4cfabe4 229 return;
oliverb 0:e760d4cfabe4 230 }
oliverb 0:e760d4cfabe4 231 for(uint8_t bit = 0x1; bit != 0x00; bit <<= 1) {
oliverb 0:e760d4cfabe4 232 *clkport &= ~clkpinmask;
oliverb 0:e760d4cfabe4 233 if(d & bit) *mosiport |= mosipinmask;
oliverb 0:e760d4cfabe4 234 else *mosiport &= ~mosipinmask;
oliverb 0:e760d4cfabe4 235 *clkport |= clkpinmask;
oliverb 0:e760d4cfabe4 236 }
oliverb 0:e760d4cfabe4 237 }
oliverb 0:e760d4cfabe4 238 */
oliverb 0:e760d4cfabe4 239 /*
oliverb 0:e760d4cfabe4 240 uint8_t Adafruit_GP9002::slowSPIread(void) {
oliverb 0:e760d4cfabe4 241 uint8_t reply = 0;
oliverb 0:e760d4cfabe4 242 for (uint8_t i=0; i<8; i++) {
oliverb 0:e760d4cfabe4 243 digitalWrite(_sclk, LOW);
oliverb 0:e760d4cfabe4 244
oliverb 0:e760d4cfabe4 245 digitalWrite(_sclk, HIGH);
oliverb 0:e760d4cfabe4 246 if (digitalRead(_miso))
oliverb 0:e760d4cfabe4 247 reply |= _BV(i);
oliverb 0:e760d4cfabe4 248 }
oliverb 0:e760d4cfabe4 249 return reply;
oliverb 0:e760d4cfabe4 250 }
oliverb 0:e760d4cfabe4 251
oliverb 0:e760d4cfabe4 252 inline uint8_t Adafruit_GP9002::fastSPIread(void) {
oliverb 0:e760d4cfabe4 253 uint8_t reply = 0;
oliverb 0:e760d4cfabe4 254 for (uint8_t i=0; i<8; i++) {
oliverb 0:e760d4cfabe4 255 *clkport &= ~clkpinmask;
oliverb 0:e760d4cfabe4 256
oliverb 0:e760d4cfabe4 257 *clkport |= clkpinmask;
oliverb 0:e760d4cfabe4 258 if ((*misopin) & misopinmask)
oliverb 0:e760d4cfabe4 259 reply |= _BV(i);
oliverb 0:e760d4cfabe4 260 }
oliverb 0:e760d4cfabe4 261 return reply;
oliverb 0:e760d4cfabe4 262 }
oliverb 0:e760d4cfabe4 263 */
oliverb 0:e760d4cfabe4 264
oliverb 0:e760d4cfabe4 265 void Adafruit_GP9002::command(uint8_t d) {
oliverb 0:e760d4cfabe4 266 /*
oliverb 0:e760d4cfabe4 267 *dcport |= dcpinmask;
oliverb 0:e760d4cfabe4 268 *csport &= ~cspinmask;
oliverb 0:e760d4cfabe4 269 fastSPIwrite(d);
oliverb 0:e760d4cfabe4 270 *csport |= cspinmask;
oliverb 0:e760d4cfabe4 271 delayMicroseconds(1); // should be 400ns actually
oliverb 0:e760d4cfabe4 272 */
oliverb 0:e760d4cfabe4 273 _dc=1;
oliverb 0:e760d4cfabe4 274 _cs=0;
oliverb 0:e760d4cfabe4 275 _spi.write(BitReverseTable256[d]);
oliverb 0:e760d4cfabe4 276 _cs=1;
oliverb 0:e760d4cfabe4 277 wait_us(1);
oliverb 0:e760d4cfabe4 278 }
oliverb 0:e760d4cfabe4 279
oliverb 0:e760d4cfabe4 280 inline void Adafruit_GP9002::dataWrite(uint8_t d) {
oliverb 0:e760d4cfabe4 281 /*
oliverb 0:e760d4cfabe4 282 *dcport &= ~dcpinmask;
oliverb 0:e760d4cfabe4 283 *csport &= ~cspinmask;
oliverb 0:e760d4cfabe4 284
oliverb 0:e760d4cfabe4 285 fastSPIwrite(d);
oliverb 0:e760d4cfabe4 286
oliverb 0:e760d4cfabe4 287 *csport |= cspinmask;
oliverb 0:e760d4cfabe4 288 delayMicroseconds(1); // should be 600ns actually
oliverb 0:e760d4cfabe4 289 */
oliverb 0:e760d4cfabe4 290 _dc=0;
oliverb 0:e760d4cfabe4 291 _cs=0;
oliverb 0:e760d4cfabe4 292 _spi.write(BitReverseTable256[d]);
oliverb 0:e760d4cfabe4 293 _cs=1;
oliverb 0:e760d4cfabe4 294 wait_us(1);
oliverb 0:e760d4cfabe4 295 }
oliverb 0:e760d4cfabe4 296
oliverb 0:e760d4cfabe4 297 inline uint8_t Adafruit_GP9002::dataRead() {
oliverb 0:e760d4cfabe4 298 uint8_t r;
oliverb 0:e760d4cfabe4 299 /*
oliverb 0:e760d4cfabe4 300 *dcport &= ~dcpinmask;
oliverb 0:e760d4cfabe4 301 *csport &= ~cspinmask;
oliverb 0:e760d4cfabe4 302
oliverb 0:e760d4cfabe4 303 r = fastSPIread();
oliverb 0:e760d4cfabe4 304
oliverb 0:e760d4cfabe4 305 *csport |= cspinmask;
oliverb 0:e760d4cfabe4 306 delayMicroseconds(1);
oliverb 0:e760d4cfabe4 307 */
oliverb 0:e760d4cfabe4 308
oliverb 0:e760d4cfabe4 309 _dc=0;
oliverb 0:e760d4cfabe4 310 _cs=0;
oliverb 0:e760d4cfabe4 311 r=BitReverseTable256[_spi.write(0)&0xFF];
oliverb 0:e760d4cfabe4 312 _cs=1;
oliverb 0:e760d4cfabe4 313 wait_us(1);
oliverb 0:e760d4cfabe4 314
oliverb 0:e760d4cfabe4 315
oliverb 0:e760d4cfabe4 316 return r;
oliverb 0:e760d4cfabe4 317 }
oliverb 0:e760d4cfabe4 318
oliverb 0:e760d4cfabe4 319 void Adafruit_GP9002::setBrightness(uint8_t val) {
oliverb 0:e760d4cfabe4 320
oliverb 0:e760d4cfabe4 321 }
oliverb 0:e760d4cfabe4 322
oliverb 0:e760d4cfabe4 323 // clear everything
oliverb 0:e760d4cfabe4 324 void Adafruit_GP9002::clearDisplay(void) {
oliverb 0:e760d4cfabe4 325 command(GP9002_CLEARSCREEN);
oliverb 0:e760d4cfabe4 326
oliverb 1:09dc95ba8711 327 wait_us(500);
oliverb 0:e760d4cfabe4 328 }
oliverb 0:e760d4cfabe4 329
oliverb 0:e760d4cfabe4 330 void Adafruit_GP9002::displayOff(void) {
oliverb 0:e760d4cfabe4 331 command(GP9002_DISPLAYSOFF);
oliverb 0:e760d4cfabe4 332 }
oliverb 0:e760d4cfabe4 333 void Adafruit_GP9002::displayOn(void) {
oliverb 0:e760d4cfabe4 334 command(GP9002_DISPLAY1ON);
oliverb 0:e760d4cfabe4 335 }
oliverb 0:e760d4cfabe4 336
oliverb 0:e760d4cfabe4 337