Kazuhiro Ouchi / microbit_weatherbit_oled

We connected an OLED to I2C of weather:bit.

Dependencies:   BME280 SSD1308_128x64_I2C microbit

Fork of mbed_oled by Wim Huiskamp

/media/uploads/kanpapa/img_20171215_224649.jpg

main.cpp@5:dff410a009c5, 2012-07-21 (annotated)

Committer:
wim
Date:
Sat Jul 21 12:50:23 2012 +0000
Revision:
5:dff410a009c5
Parent:
4:83b4e905be5b
Child:
6:44256b0b5d18
Added comments, Added progressbar

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wim 1:00053cb70ac5 1 /* mbed Seeed 128x64 OLED Test
wim 1:00053cb70ac5 2 * http://www.seeedstudio.com/depot/grove-oled-display-12864-p-781.html?cPath=163_167
wim 1:00053cb70ac5 3 *
wim 1:00053cb70ac5 4 * Copyright (c) 2012 Wim Huiskamp
wim 1:00053cb70ac5 5 * Released under the MIT License: http://mbed.org/license/mit
wim 1:00053cb70ac5 6 *
wim 1:00053cb70ac5 7 * version 0.2 Initial Release
wim 1:00053cb70ac5 8 */
wim 1:00053cb70ac5 9 #include "mbed.h"
wim 1:00053cb70ac5 10 #include "mbed_logo.h"
wim 1:00053cb70ac5 11 #include "SSD1308.h"
wim 1:00053cb70ac5 12
wim 1:00053cb70ac5 13
wim 1:00053cb70ac5 14 //Pin Defines for I2C Bus
wim 1:00053cb70ac5 15 //#define D_SDA p9
wim 1:00053cb70ac5 16 //#define D_SCL p10
wim 1:00053cb70ac5 17 #define D_SDA p28
wim 1:00053cb70ac5 18 #define D_SCL p27
wim 1:00053cb70ac5 19 I2C i2c(D_SDA, D_SCL);
wim 1:00053cb70ac5 20
wim 1:00053cb70ac5 21 //Host PC Baudrate (Virtual Com Port on USB)
wim 1:00053cb70ac5 22 #define D_BAUDRATE 9600
wim 1:00053cb70ac5 23 //#define D_BAUDRATE 57600
wim 1:00053cb70ac5 24
wim 1:00053cb70ac5 25 // mbed Interface Hardware definitions
wim 1:00053cb70ac5 26 DigitalOut myled1(LED1);
wim 1:00053cb70ac5 27 DigitalOut myled2(LED2);
wim 1:00053cb70ac5 28 DigitalOut myled3(LED3);
wim 1:00053cb70ac5 29 DigitalOut heartbeatLED(LED4);
wim 1:00053cb70ac5 30
wim 1:00053cb70ac5 31 // Host PC Communication channels
wim 1:00053cb70ac5 32 Serial pc(USBTX, USBRX); // tx, rx
wim 1:00053cb70ac5 33
wim 1:00053cb70ac5 34 // Instantiate OLED
wim 1:00053cb70ac5 35 SSD1308 oled = SSD1308(i2c, SSD1308_SA0);
wim 1:00053cb70ac5 36
wim 1:00053cb70ac5 37 void show_menu() {
wim 3:1337e3d65ed0 38 pc.printf("0: Exit\r");
wim 3:1337e3d65ed0 39 pc.printf("1: Show Menu\r");
wim 3:1337e3d65ed0 40 pc.printf("2: Send Message\r");
wim 3:1337e3d65ed0 41 pc.printf("3: Fill Display\r");
wim 3:1337e3d65ed0 42 pc.printf("4: Display cleared\r");
wim 3:1337e3d65ed0 43 pc.printf("5: Display off\r");
wim 3:1337e3d65ed0 44 pc.printf("6: Display on\r");
wim 3:1337e3d65ed0 45 pc.printf("7: Display Invert\r");
wim 3:1337e3d65ed0 46 pc.printf("8: Display Normal\r");
wim 3:1337e3d65ed0 47 pc.printf("9: Display Bitmap\r");
wim 3:1337e3d65ed0 48 pc.printf("A: Brightness Ramp\r");
wim 3:1337e3d65ed0 49 pc.printf("B: Send Inverted Message\r");
wim 3:1337e3d65ed0 50 pc.printf("C: Flip and Mirror\r");
wim 3:1337e3d65ed0 51 pc.printf("D: Blink\r");
wim 3:1337e3d65ed0 52 pc.printf("E: Big Chars\r");
wim 5:dff410a009c5 53 pc.printf("F: Progress Scale\r");
wim 1:00053cb70ac5 54 // pc.printf("\n\r");
wim 1:00053cb70ac5 55
wim 1:00053cb70ac5 56 }
wim 1:00053cb70ac5 57
wim 1:00053cb70ac5 58
wim 1:00053cb70ac5 59 void oled_Test() {
wim 1:00053cb70ac5 60 pc.printf("OLED test start\r");
wim 1:00053cb70ac5 61
wim 1:00053cb70ac5 62 oled.writeString(0, 0, 13, "Hello World !");
wim 1:00053cb70ac5 63 pc.printf("Printed something\r\n");
wim 1:00053cb70ac5 64 wait(3);
wim 1:00053cb70ac5 65
wim 1:00053cb70ac5 66 oled.writeString(1, 0, 8, "baz quux");
wim 1:00053cb70ac5 67 pc.printf("Printed something\r\n");
wim 1:00053cb70ac5 68 wait(3);
wim 1:00053cb70ac5 69
wim 1:00053cb70ac5 70 // oled.writeString(4, 0, 272, "a long, rather lengthy, extended string passage thing, eh, that just goes on, and on, and on, and on, and on, and on, and on, yes, further, continuing, extending, expanding beyond all reason or sanity!!!!! and yet, there's more! so much more! for ever and ever, oh yeah");
wim 1:00053cb70ac5 71 // pc.printf("Printed something\r\n");
wim 1:00053cb70ac5 72 // wait(3);
wim 1:00053cb70ac5 73
wim 1:00053cb70ac5 74 oled.fillDisplay(0xAA);
wim 1:00053cb70ac5 75 pc.printf("Display filled\r\n");
wim 1:00053cb70ac5 76 wait(3);
wim 1:00053cb70ac5 77
wim 1:00053cb70ac5 78 oled.setDisplayOff();
wim 1:00053cb70ac5 79 pc.printf("Display off\r\n");
wim 1:00053cb70ac5 80 wait(0.5);
wim 1:00053cb70ac5 81
wim 1:00053cb70ac5 82 oled.setDisplayOn();
wim 1:00053cb70ac5 83 pc.printf("Display on\r\n");
wim 1:00053cb70ac5 84 wait(0.5);
wim 1:00053cb70ac5 85
wim 1:00053cb70ac5 86 oled.clearDisplay();
wim 1:00053cb70ac5 87 pc.printf("Display cleared\r\n");
wim 1:00053cb70ac5 88 wait(0.5);
wim 1:00053cb70ac5 89
wim 1:00053cb70ac5 90 oled.writeString(0, 0, 11, "Bye World !");
wim 1:00053cb70ac5 91 pc.printf("Printed something\r\n");
wim 1:00053cb70ac5 92 wait(3);
wim 1:00053cb70ac5 93
wim 1:00053cb70ac5 94 pc.printf("OLED test done\r\n");
wim 1:00053cb70ac5 95 }
wim 1:00053cb70ac5 96
wim 1:00053cb70ac5 97 // Variables for Heartbeat and Status monitoring
wim 1:00053cb70ac5 98 Ticker heartbeat;
wim 1:00053cb70ac5 99 bool heartbeatflag=false;
wim 1:00053cb70ac5 100
wim 1:00053cb70ac5 101 // Local functions
wim 1:00053cb70ac5 102 void clear_screen() {
wim 1:00053cb70ac5 103 //ANSI Terminal Commands
wim 1:00053cb70ac5 104 pc.printf("\x1B[2J");
wim 1:00053cb70ac5 105 pc.printf("\x1B[H");
wim 1:00053cb70ac5 106 }
wim 1:00053cb70ac5 107
wim 1:00053cb70ac5 108
wim 1:00053cb70ac5 109 void init_interfaces() {
wim 1:00053cb70ac5 110 // Init Host PC communication, default is 9600
wim 1:00053cb70ac5 111 pc.baud(D_BAUDRATE);
wim 1:00053cb70ac5 112
wim 1:00053cb70ac5 113 // Init I/F hardware
wim 1:00053cb70ac5 114 // i2c.frequency(100000);
wim 1:00053cb70ac5 115 i2c.frequency(400000); // according to the spec the max bitrate for the SSD1308 is 400 kbit/s
wim 1:00053cb70ac5 116 }
wim 1:00053cb70ac5 117
wim 1:00053cb70ac5 118
wim 1:00053cb70ac5 119 // Heartbeat monitor
wim 1:00053cb70ac5 120 void pulse() {
wim 1:00053cb70ac5 121 heartbeatLED = !heartbeatLED;
wim 1:00053cb70ac5 122 }
wim 1:00053cb70ac5 123
wim 1:00053cb70ac5 124 void heartbeat_start() {
wim 1:00053cb70ac5 125 heartbeat.attach(&pulse, 0.5);
wim 1:00053cb70ac5 126 }
wim 1:00053cb70ac5 127
wim 1:00053cb70ac5 128 void heartbeat_stop() {
wim 1:00053cb70ac5 129 heartbeat.detach();
wim 1:00053cb70ac5 130 }
wim 1:00053cb70ac5 131
wim 1:00053cb70ac5 132
wim 1:00053cb70ac5 133 int main() {
wim 1:00053cb70ac5 134 bool running=true;
wim 2:d86478c0f5da 135 bool left = true;
wim 2:d86478c0f5da 136 bool down = true;
wim 2:d86478c0f5da 137
wim 1:00053cb70ac5 138 char command;
wim 1:00053cb70ac5 139
wim 1:00053cb70ac5 140 init_interfaces();
wim 1:00053cb70ac5 141
wim 1:00053cb70ac5 142 heartbeat_start();
wim 1:00053cb70ac5 143
wim 1:00053cb70ac5 144 clear_screen();
wim 1:00053cb70ac5 145
wim 1:00053cb70ac5 146 pc.printf("Hello World!\n\r");
wim 1:00053cb70ac5 147
wim 1:00053cb70ac5 148 #if(0)
wim 1:00053cb70ac5 149 // Quick test
wim 1:00053cb70ac5 150 oled_Test();
wim 1:00053cb70ac5 151
wim 1:00053cb70ac5 152 while(1) {
wim 1:00053cb70ac5 153 myled1 = 1;
wim 1:00053cb70ac5 154 wait(0.2);
wim 1:00053cb70ac5 155
wim 1:00053cb70ac5 156 myled1 = 0;
wim 1:00053cb70ac5 157 wait(0.2);
wim 1:00053cb70ac5 158 pc.printf("*");
wim 1:00053cb70ac5 159 }
wim 1:00053cb70ac5 160 #else
wim 1:00053cb70ac5 161 // Interactive Test
wim 1:00053cb70ac5 162 show_menu();
wim 1:00053cb70ac5 163
wim 1:00053cb70ac5 164 while(running) {
wim 1:00053cb70ac5 165
wim 1:00053cb70ac5 166 if(pc.readable()) {
wim 1:00053cb70ac5 167 command = pc.getc();
wim 3:1337e3d65ed0 168 //pc.printf("command= %c \n\r", command);
wim 3:1337e3d65ed0 169 pc.printf("\r");
wim 3:1337e3d65ed0 170
wim 1:00053cb70ac5 171 switch (command) {
wim 1:00053cb70ac5 172 case '0' :
wim 1:00053cb70ac5 173 pc.printf("Done\n\r");
wim 1:00053cb70ac5 174 running = false;
wim 1:00053cb70ac5 175 break;
wim 1:00053cb70ac5 176
wim 1:00053cb70ac5 177 case '1' :
wim 1:00053cb70ac5 178 show_menu();
wim 1:00053cb70ac5 179 break;
wim 1:00053cb70ac5 180
wim 1:00053cb70ac5 181 case '2' :
wim 1:00053cb70ac5 182 pc.printf("Hello World!\n\r");
wim 1:00053cb70ac5 183 oled.writeString(0, 0, 13, "Hello World !");
wim 1:00053cb70ac5 184 break;
wim 1:00053cb70ac5 185
wim 1:00053cb70ac5 186 case '3' :
wim 3:1337e3d65ed0 187 pc.printf("Fill part of Display 0xA5\n\r");
wim 3:1337e3d65ed0 188 // oled.fillDisplay(0xA5);
wim 3:1337e3d65ed0 189
wim 3:1337e3d65ed0 190 oled.fillDisplay(0xA5, 2, 5, 0, 63);
wim 1:00053cb70ac5 191 break;
wim 1:00053cb70ac5 192
wim 1:00053cb70ac5 193 case '4' :
wim 1:00053cb70ac5 194 pc.printf("Display cleared\r\n");
wim 1:00053cb70ac5 195 oled.clearDisplay();
wim 1:00053cb70ac5 196 break;
wim 1:00053cb70ac5 197
wim 1:00053cb70ac5 198 case '5' :
wim 1:00053cb70ac5 199 pc.printf("Display off\r\n");
wim 1:00053cb70ac5 200 oled.setDisplayOff();
wim 1:00053cb70ac5 201 break;
wim 1:00053cb70ac5 202 case '6' :
wim 1:00053cb70ac5 203 pc.printf("Display on\r\n");
wim 1:00053cb70ac5 204 oled.setDisplayOn();
wim 1:00053cb70ac5 205 break;
wim 1:00053cb70ac5 206
wim 1:00053cb70ac5 207 case '7' :
wim 1:00053cb70ac5 208 pc.printf("Display Invert\r\n");
wim 1:00053cb70ac5 209 oled.setDisplayInverse();
wim 1:00053cb70ac5 210 break;
wim 1:00053cb70ac5 211
wim 1:00053cb70ac5 212 case '8' :
wim 1:00053cb70ac5 213 pc.printf("Display Normal\r\n");
wim 1:00053cb70ac5 214 oled.setDisplayNormal();
wim 1:00053cb70ac5 215 break;
wim 1:00053cb70ac5 216
wim 1:00053cb70ac5 217 case '9' :
wim 1:00053cb70ac5 218 pc.printf("Display bitmap\r\n");
wim 3:1337e3d65ed0 219 oled.writeBitmap((uint8_t*) mbed_logo);
wim 3:1337e3d65ed0 220
wim 1:00053cb70ac5 221 break;
wim 1:00053cb70ac5 222
wim 1:00053cb70ac5 223 case 'A' :
wim 3:1337e3d65ed0 224
wim 2:d86478c0f5da 225 pc.printf("Brightness Ramp Down\r\n");
wim 3:1337e3d65ed0 226 for (int contrast=0x7F; contrast >= 0x10; contrast--) {
wim 2:d86478c0f5da 227 oled.setContrastControl(contrast);
wim 2:d86478c0f5da 228 wait(0.05);
wim 2:d86478c0f5da 229 }
wim 2:d86478c0f5da 230
wim 2:d86478c0f5da 231 wait(1);
wim 3:1337e3d65ed0 232
wim 2:d86478c0f5da 233 pc.printf("Brightness Ramp Up\r\n");
wim 3:1337e3d65ed0 234 for (int contrast=0x10; contrast <= 0x7F; contrast++) {
wim 2:d86478c0f5da 235 oled.setContrastControl(contrast);
wim 2:d86478c0f5da 236 wait(0.05);
wim 2:d86478c0f5da 237 }
wim 2:d86478c0f5da 238
wim 3:1337e3d65ed0 239 pc.printf("Brightness Ramp Done\r\n");
wim 3:1337e3d65ed0 240
wim 1:00053cb70ac5 241 break;
wim 1:00053cb70ac5 242
wim 1:00053cb70ac5 243 case 'B' :
wim 2:d86478c0f5da 244 pc.printf("Send Inverted Message\n\r");
wim 3:1337e3d65ed0 245 oled.setInverted(true);
wim 3:1337e3d65ed0 246 oled.writeString(0, 0, 13, "Hello World !");
wim 3:1337e3d65ed0 247 oled.setInverted(false);
wim 3:1337e3d65ed0 248
wim 3:1337e3d65ed0 249 oled.printf(" Result is %d", 12345);
wim 3:1337e3d65ed0 250
wim 2:d86478c0f5da 251 break;
wim 2:d86478c0f5da 252
wim 2:d86478c0f5da 253 case 'C' :
wim 2:d86478c0f5da 254 pc.printf("Flip and Mirror (Rewrite display to show horizontal effect)\n\r");
wim 2:d86478c0f5da 255 left = !left;
wim 2:d86478c0f5da 256 down = !down;
wim 2:d86478c0f5da 257 oled.setDisplayFlip(left, down);
wim 3:1337e3d65ed0 258 break;
wim 3:1337e3d65ed0 259
wim 3:1337e3d65ed0 260 case 'D' :
wim 3:1337e3d65ed0 261 pc.printf("D: Blink and Fade (not supported) \n\r");
wim 3:1337e3d65ed0 262
wim 3:1337e3d65ed0 263 // oled.setDisplayBlink(true);
wim 3:1337e3d65ed0 264 // wait(4);
wim 3:1337e3d65ed0 265 // oled.setDisplayBlink(false);
wim 3:1337e3d65ed0 266
wim 3:1337e3d65ed0 267 oled.setDisplayFade(true);
wim 3:1337e3d65ed0 268 wait(4);
wim 3:1337e3d65ed0 269 oled.setDisplayFade(false);
wim 3:1337e3d65ed0 270
wim 3:1337e3d65ed0 271 pc.printf("D: Blink done\n\r");
wim 3:1337e3d65ed0 272 break;
wim 3:1337e3d65ed0 273
wim 3:1337e3d65ed0 274
wim 3:1337e3d65ed0 275 case 'E' :
wim 3:1337e3d65ed0 276 pc.printf("E: Big Chars\n\r");
wim 3:1337e3d65ed0 277
wim 3:1337e3d65ed0 278 oled.writeBigChar(0, 0, '+');
wim 3:1337e3d65ed0 279 oled.writeBigChar(0, 16, '7');
wim 3:1337e3d65ed0 280 oled.writeBigChar(0, 32, '8');
wim 3:1337e3d65ed0 281 oled.writeBigChar(0, 48, '9');
wim 3:1337e3d65ed0 282
wim 3:1337e3d65ed0 283 pc.printf("E: Big Chars done\n\r");
wim 3:1337e3d65ed0 284 break;
wim 5:dff410a009c5 285
wim 5:dff410a009c5 286 case 'F' :
wim 5:dff410a009c5 287 pc.printf("F: Progress Scale\n\r");
wim 5:dff410a009c5 288
wim 5:dff410a009c5 289 for (int percentage=0; percentage <= 100; percentage++) {
wim 5:dff410a009c5 290 oled.writeProgressBar(2, 0, percentage);
wim 5:dff410a009c5 291 oled.printf(" %3d %%", percentage);
wim 5:dff410a009c5 292
wim 5:dff410a009c5 293 oled.writeProgressBar(4, 0, 100 - percentage);
wim 5:dff410a009c5 294 oled.printf(" %3d %%", 100 - percentage);
wim 5:dff410a009c5 295 wait(0.05);
wim 5:dff410a009c5 296 }
wim 5:dff410a009c5 297
wim 5:dff410a009c5 298
wim 5:dff410a009c5 299 pc.printf("F: Progress Scale done\n\r");
wim 5:dff410a009c5 300 break;
wim 5:dff410a009c5 301
wim 5:dff410a009c5 302
wim 3:1337e3d65ed0 303
wim 1:00053cb70ac5 304 } //switch
wim 1:00053cb70ac5 305 }//if
wim 1:00053cb70ac5 306 }//while
wim 1:00053cb70ac5 307 #endif
wim 1:00053cb70ac5 308
wim 1:00053cb70ac5 309 pc.printf("Bye World!\n\r");
wim 1:00053cb70ac5 310 }//main
wim 1:00053cb70ac5 311