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Location: therm/ssd1306.c
b41e2aea6dd8
15.6 KiB
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Added correct temperature conversions to RTD version
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 | #include "ssd1306.h"
// Write command to OLED
static void WriteCommand(unsigned char command)
{
SSD_CS_Low();
SSD_A0_Low();
SPI_SendByte(command);
SSD_CS_High();
}
// Write data to OLED
static void WriteData(unsigned char data)
{
SSD_CS_Low();
SSD_A0_High();
SPI_SendByte(data);
SSD_CS_High();
}
// Initialize OLED
void ssd1306_init(void)
{
/* Generate a reset */
SSD_Reset_Low();
uint32_t i;
for(i=5000; i>1; i--)
SSD_Reset_High();
WriteCommand(0xAE);
WriteCommand(0xD5);
WriteCommand(0x80);
WriteCommand(0xA8);
WriteCommand(0x1F);
WriteCommand(0xD3);
WriteCommand(0x00);
WriteCommand(0x40 | 0x00); // line #0
WriteCommand(0x8D);
WriteCommand(0x14); //10 or 14 if not externalvcc
WriteCommand(0x20);
WriteCommand(0x00);
// WriteCommand(0xA0 | 0x1); // segremap (normal)
WriteCommand(0xA0); // segremap (flip)
// WriteCommand(0xC8); // comscandec (normal)
WriteCommand(0xC0); // comscandec (flip)
WriteCommand(0xDA); // setcompins
WriteCommand(0x02);
WriteCommand(0x81); // contrast
WriteCommand(0x0F); // contrast value. 8f is a good one.
WriteCommand(0xD9);
WriteCommand(0xF1); //22 or F1 if not externalvcc
WriteCommand(0xDB);
WriteCommand(0x40);
WriteCommand(0xA4); // dispalyallon_resume
WriteCommand(0xA6); // normaldisplay
WriteCommand(0xAF); // display on
}
// Times New Roman font
static const char fontData[][5] =
{ // Refer to "Times New Roman" Font Database
// Basic Characters
{0x00,0x00,0x00,0x00,0x00}, // ( 0) - 0x0020 No-Break Space
{0x00,0x00,0x4F,0x00,0x00}, // ( 1) ! - 0x0021 Exclamation Mark
{0x00,0x07,0x00,0x07,0x00}, // ( 2) " - 0x0022 Quotation Mark
{0x14,0x7F,0x14,0x7F,0x14}, // ( 3) # - 0x0023 Number Sign
{0x24,0x2A,0x7F,0x2A,0x12}, // ( 4) $ - 0x0024 Dollar Sign
{0x23,0x13,0x08,0x64,0x62}, // ( 5) % - 0x0025 Percent Sign
{0x36,0x49,0x55,0x22,0x50}, // ( 6) & - 0x0026 Ampersand
{0x00,0x05,0x03,0x00,0x00}, // ( 7) ' - 0x0027 Apostrophe
{0x00,0x1C,0x22,0x41,0x00}, // ( 8) ( - 0x0028 Left Parenthesis
{0x00,0x41,0x22,0x1C,0x00}, // ( 9) ) - 0x0029 Right Parenthesis
{0x14,0x08,0x3E,0x08,0x14}, // ( 10) * - 0x002A Asterisk
{0x08,0x08,0x3E,0x08,0x08}, // ( 11) + - 0x002B Plus Sign
{0x00,0x50,0x30,0x00,0x00}, // ( 12) , - 0x002C Comma
{0x08,0x08,0x08,0x08,0x08}, // ( 13) - - 0x002D Hyphen-Minus
{0x00,0x60,0x60,0x00,0x00}, // ( 14) . - 0x002E Full Stop
{0x20,0x10,0x08,0x04,0x02}, // ( 15) / - 0x002F Solidus
{0x3E,0x51,0x49,0x45,0x3E}, // ( 16) 0 - 0x0030 Digit Zero
{0x00,0x42,0x7F,0x40,0x00}, // ( 17) 1 - 0x0031 Digit One
{0x42,0x61,0x51,0x49,0x46}, // ( 18) 2 - 0x0032 Digit Two
{0x21,0x41,0x45,0x4B,0x31}, // ( 19) 3 - 0x0033 Digit Three
{0x18,0x14,0x12,0x7F,0x10}, // ( 20) 4 - 0x0034 Digit Four
{0x27,0x45,0x45,0x45,0x39}, // ( 21) 5 - 0x0035 Digit Five
{0x3C,0x4A,0x49,0x49,0x30}, // ( 22) 6 - 0x0036 Digit Six
{0x01,0x71,0x09,0x05,0x03}, // ( 23) 7 - 0x0037 Digit Seven
{0x36,0x49,0x49,0x49,0x36}, // ( 24) 8 - 0x0038 Digit Eight
{0x06,0x49,0x49,0x29,0x1E}, // ( 25) 9 - 0x0039 Dight Nine
{0x00,0x36,0x36,0x00,0x00}, // ( 26) : - 0x003A Colon
{0x00,0x56,0x36,0x00,0x00}, // ( 27) ; - 0x003B Semicolon
{0x08,0x14,0x22,0x41,0x00}, // ( 28) < - 0x003C Less-Than Sign
{0x14,0x14,0x14,0x14,0x14}, // ( 29) = - 0x003D Equals Sign
{0x00,0x41,0x22,0x14,0x08}, // ( 30) > - 0x003E Greater-Than Sign
{0x02,0x01,0x51,0x09,0x06}, // ( 31) ? - 0x003F Question Mark
{0x32,0x49,0x79,0x41,0x3E}, // ( 32) @ - 0x0040 Commercial At
{0x7E,0x11,0x11,0x11,0x7E}, // ( 33) A - 0x0041 Latin Capital Letter A
{0x7F,0x49,0x49,0x49,0x36}, // ( 34) B - 0x0042 Latin Capital Letter B
{0x3E,0x41,0x41,0x41,0x22}, // ( 35) C - 0x0043 Latin Capital Letter C
{0x7F,0x41,0x41,0x22,0x1C}, // ( 36) D - 0x0044 Latin Capital Letter D
{0x7F,0x49,0x49,0x49,0x41}, // ( 37) E - 0x0045 Latin Capital Letter E
{0x7F,0x09,0x09,0x09,0x01}, // ( 38) F - 0x0046 Latin Capital Letter F
{0x3E,0x41,0x49,0x49,0x7A}, // ( 39) G - 0x0047 Latin Capital Letter G
{0x7F,0x08,0x08,0x08,0x7F}, // ( 40) H - 0x0048 Latin Capital Letter H
{0x00,0x41,0x7F,0x41,0x00}, // ( 41) I - 0x0049 Latin Capital Letter I
{0x20,0x40,0x41,0x3F,0x01}, // ( 42) J - 0x004A Latin Capital Letter J
{0x7F,0x08,0x14,0x22,0x41}, // ( 43) K - 0x004B Latin Capital Letter K
{0x7F,0x40,0x40,0x40,0x40}, // ( 44) L - 0x004C Latin Capital Letter L
{0x7F,0x02,0x0C,0x02,0x7F}, // ( 45) M - 0x004D Latin Capital Letter M
{0x7F,0x04,0x08,0x10,0x7F}, // ( 46) N - 0x004E Latin Capital Letter N
{0x3E,0x41,0x41,0x41,0x3E}, // ( 47) O - 0x004F Latin Capital Letter O
{0x7F,0x09,0x09,0x09,0x06}, // ( 48) P - 0x0050 Latin Capital Letter P
{0x3E,0x41,0x51,0x21,0x5E}, // ( 49) Q - 0x0051 Latin Capital Letter Q
{0x7F,0x09,0x19,0x29,0x46}, // ( 50) R - 0x0052 Latin Capital Letter R
{0x46,0x49,0x49,0x49,0x31}, // ( 51) S - 0x0053 Latin Capital Letter S
{0x01,0x01,0x7F,0x01,0x01}, // ( 52) T - 0x0054 Latin Capital Letter T
{0x3F,0x40,0x40,0x40,0x3F}, // ( 53) U - 0x0055 Latin Capital Letter U
{0x1F,0x20,0x40,0x20,0x1F}, // ( 54) V - 0x0056 Latin Capital Letter V
{0x3F,0x40,0x38,0x40,0x3F}, // ( 55) W - 0x0057 Latin Capital Letter W
{0x63,0x14,0x08,0x14,0x63}, // ( 56) X - 0x0058 Latin Capital Letter X
{0x07,0x08,0x70,0x08,0x07}, // ( 57) Y - 0x0059 Latin Capital Letter Y
{0x61,0x51,0x49,0x45,0x43}, // ( 58) Z - 0x005A Latin Capital Letter Z
{0x00,0x7F,0x41,0x41,0x00}, // ( 59) [ - 0x005B Left Square Bracket
{0x02,0x04,0x08,0x10,0x20}, // ( 60) \ - 0x005C Reverse Solidus
{0x00,0x41,0x41,0x7F,0x00}, // ( 61) ] - 0x005D Right Square Bracket
{0x04,0x02,0x01,0x02,0x04}, // ( 62) ^ - 0x005E Circumflex Accent
{0x40,0x40,0x40,0x40,0x40}, // ( 63) _ - 0x005F Low Line
{0x01,0x02,0x04,0x00,0x00}, // ( 64) ` - 0x0060 Grave Accent
{0x20,0x54,0x54,0x54,0x78}, // ( 65) a - 0x0061 Latin Small Letter A
{0x7F,0x48,0x44,0x44,0x38}, // ( 66) b - 0x0062 Latin Small Letter B
{0x38,0x44,0x44,0x44,0x20}, // ( 67) c - 0x0063 Latin Small Letter C
{0x38,0x44,0x44,0x48,0x7F}, // ( 68) d - 0x0064 Latin Small Letter D
{0x38,0x54,0x54,0x54,0x18}, // ( 69) e - 0x0065 Latin Small Letter E
{0x08,0x7E,0x09,0x01,0x02}, // ( 70) f - 0x0066 Latin Small Letter F
{0x06,0x49,0x49,0x49,0x3F}, // ( 71) g - 0x0067 Latin Small Letter G
{0x7F,0x08,0x04,0x04,0x78}, // ( 72) h - 0x0068 Latin Small Letter H
{0x00,0x44,0x7D,0x40,0x00}, // ( 73) i - 0x0069 Latin Small Letter I
{0x20,0x40,0x44,0x3D,0x00}, // ( 74) j - 0x006A Latin Small Letter J
{0x7F,0x10,0x28,0x44,0x00}, // ( 75) k - 0x006B Latin Small Letter K
{0x00,0x41,0x7F,0x40,0x00}, // ( 76) l - 0x006C Latin Small Letter L
{0x7C,0x04,0x18,0x04,0x7C}, // ( 77) m - 0x006D Latin Small Letter M
{0x7C,0x08,0x04,0x04,0x78}, // ( 78) n - 0x006E Latin Small Letter N
{0x38,0x44,0x44,0x44,0x38}, // ( 79) o - 0x006F Latin Small Letter O
{0x7C,0x14,0x14,0x14,0x08}, // ( 80) p - 0x0070 Latin Small Letter P
{0x08,0x14,0x14,0x18,0x7C}, // ( 81) q - 0x0071 Latin Small Letter Q
{0x7C,0x08,0x04,0x04,0x08}, // ( 82) r - 0x0072 Latin Small Letter R
{0x48,0x54,0x54,0x54,0x20}, // ( 83) s - 0x0073 Latin Small Letter S
{0x04,0x3F,0x44,0x40,0x20}, // ( 84) t - 0x0074 Latin Small Letter T
{0x3C,0x40,0x40,0x20,0x7C}, // ( 85) u - 0x0075 Latin Small Letter U
{0x1C,0x20,0x40,0x20,0x1C}, // ( 86) v - 0x0076 Latin Small Letter V
{0x3C,0x40,0x30,0x40,0x3C}, // ( 87) w - 0x0077 Latin Small Letter W
{0x44,0x28,0x10,0x28,0x44}, // ( 88) x - 0x0078 Latin Small Letter X
{0x0C,0x50,0x50,0x50,0x3C}, // ( 89) y - 0x0079 Latin Small Letter Y
{0x44,0x64,0x54,0x4C,0x44}, // ( 90) z - 0x007A Latin Small Letter Z
{0x00,0x08,0x36,0x41,0x00}, // ( 91) { - 0x007B Left Curly Bracket
{0x00,0x00,0x7F,0x00,0x00}, // ( 92) | - 0x007C Vertical Line
{0x00,0x41,0x36,0x08,0x00}, // ( 93) } - 0x007D Right Curly Bracket
{0x02,0x01,0x02,0x04,0x02}, // ( 94) ~ - 0x007E Tilde
{0x08,0x14,0x2A,0x14,0x22}, // ( 95) << - 0x00AB Left-Pointing Double Angle Quotation Mark
{0x00,0x02,0x05,0x02,0x00}, // ( 96) - 0x00B0 Degree Sign
// {0x44,0x44,0x5F,0x44,0x44}, // ( 97) +- - 0x00B1 Plus-Minus Sign
// {0x7E,0x20,0x20,0x10,0x3E}, // ( 98) u - 0x00B5 Micro Sign
// {0x22,0x14,0x2A,0x14,0x08}, // ( 99) >> - 0x00BB Right-Pointing Double Angle Quotation Mark
// {0x30,0x48,0x45,0x40,0x20}, // (100) ? - 0x00BF Inverted Question Mark
// {0x22,0x14,0x08,0x14,0x22}, // (101) x - 0x00D7 Multiplcation Sign
// {0x08,0x08,0x2A,0x08,0x08}, // (102) + - 0x00F7 Division Sign
// {0x18,0x14,0x08,0x14,0x0C}, // (103) - 0x221E Infinity
// {0x44,0x4A,0x4A,0x51,0x51}, // (104) < - 0x2264 Less-Than or Equal to
// {0x51,0x51,0x4A,0x4A,0x44}, // (105) > - 0x2265 Greater-Than or Equal to
// {0x54,0x14,0x64,0x08,0x70}, // (106) .: - RF Symbol
// {0x70,0x7C,0x72,0x7C,0x70}, // (107) ^ - Lock symbol
// {0x70,0x5C,0x52,0x54,0x70}, // (108) / - Unlock symbol
// {0x0C,0x1E,0x3C,0x1E,0x0C}, // (109) <3 - Heart Symbol
// {0x18,0x22,0xFF,0x12,0x0C}, // (110) U - USB Symbol
};
static void setStartPage(unsigned char d)
{
WriteCommand(0xB0|d); // Set Page Start Address for Page Addressing Mode
// Default => 0xB0 (0x00)
}
/* Below are functions used to configure the OLED */
static void setStartColumn(unsigned char d)
{
WriteCommand(0x00+d%16); // Set Lower Column Start Address for Page Addressing Mode
WriteCommand(0x10+d/16); // Set Higher Column Start Address for Page Addressing Mode
// Default => 0x10
}
const uint8_t row[4][32] = {
{0x00,0x00,0x01,0x03,0x07,0x0F,0x1E,0x3C,0x3C,0x7C,0x7C,0x7C,0xFC,0xFF,0xFF,0xFC,0xFC,0xFC,0xFC,0xFF,0x7F,0x7F,0x7F,0x3C,0x3C,0x1C,0x0C,0x06,0x03,0x01,0x00,0x00},
{0x0F,0x7F,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x3F,0x3F,0x7F,0xFF,0xFF,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0x7F,0x0F},
{0xF0,0xFE,0xFF,0xFF,0xFF,0xC7,0x00,0x00,0x00,0x00,0x87,0xC7,0xC7,0xFF,0xFF,0x00,0x00,0x00,0x00,0x87,0x87,0xC7,0xC3,0x03,0x07,0x07,0x0F,0x7F,0xFF,0xFF,0xFE,0xF0},
{0x00,0x00,0x80,0xC0,0xE0,0xF0,0xF8,0xFC,0xFC,0xFE,0xFE,0xFE,0xFF,0xFF,0xFF,0x1F,0x1F,0x1F,0x1F,0xFF,0xFE,0xFE,0xFE,0xFC,0xFC,0xF8,0xF0,0xE0,0xC0,0x80,0x00,0x00},
};
void ssd1306_clearscreen()
{
uint8_t i = 0;
uint8_t page = 0;
for(page = 0; page<4; page++)
{
setStartPage(page);
setStartColumn(0);
for(i = 0; i<128; i++)
{
WriteData(0x00);
}
}
WriteData(0x00);
}
void ssd1306_drawlogo()
{
uint8_t i = 0;
setStartPage(3);
setStartColumn(0);
for(i = 0; i<32; i++)
{
WriteData(row[0][i]);
}
WriteData(0x00);
setStartPage(2);
setStartColumn(0);
for(i = 0; i<32; i++)
{
WriteData(row[1][i]);
}
WriteData(0x00);
setStartPage(1);
setStartColumn(0);
for(i = 0; i<32; i++)
{
WriteData(row[2][i]);
}
WriteData(0x00);
setStartPage(0);
setStartColumn(0);
for(i = 0; i < 32; i++)
{
WriteData(row[3][i]);
}
WriteData(0x00);
}
/* Print a single character from font.cpp */
void ssd1306_drawchar(char ascii, unsigned char row, unsigned char xPos)
{
const char *srcPointer = (char*)-1;
srcPointer = &fontData[(ascii-32)][0];
setStartPage(row);
setStartColumn(xPos);
for(uint8_t i = 0; i < 5; i++)
{
WriteData(*srcPointer);
srcPointer++;
}
WriteData(0x00);
}
void ssd1306_drawcharbig(char ascii, unsigned char row, unsigned char xPos)
{
const char *srcPointer = (char*)-1;
srcPointer = &fontData[(ascii-32)][0];
setStartPage(row-1);
setStartColumn(xPos);
// Write first row
for(uint8_t i = 0; i < 5; i++)
{
uint8_t data = 0;
data |= ((*srcPointer) & 0b1000) << 4; // get top 4 bits
data |= ((*srcPointer) & 0b1000) << 3; // get top 4 bits
data |= ((*srcPointer) & 0b0100) << 3; // get top 4 bits
data |= ((*srcPointer) & 0b0100) << 2; // get top 4 bits
data |= ((*srcPointer) & 0b0010) << 2; // get top 4 bits
data |= ((*srcPointer) & 0b0010) << 1; // get top 4 bits
data |= ((*srcPointer) & 0b0001) << 1; // get top 4 bits
data |= ((*srcPointer) & 0b0001); // get top 4 bits
WriteData(data);
WriteData(data);
srcPointer++;
}
WriteData(0x00);
srcPointer -= 5;
setStartPage(row);
setStartColumn(xPos);
// Write second row
for(uint8_t i = 0; i < 5; i++)
{
uint8_t data = 0;
data |= (*srcPointer) & 0b10000000; // get top 4 bits
data |= ((*srcPointer) & 0b10000000) >> 1; // get top 4 bits
data |= ((*srcPointer) & 0b01000000) >> 1; // get top 4 bits
data |= ((*srcPointer) & 0b01000000) >> 2; // get top 4 bits
data |= ((*srcPointer) & 0b00100000) >> 2; // get top 4 bits
data |= ((*srcPointer) & 0b00100000) >> 3; // get top 4 bits
data |= ((*srcPointer) & 0b00010000) >> 3; // get top 4 bits
data |= ((*srcPointer) & 0b00010000) >> 4; // get top 4 bits
WriteData(data);
WriteData(data);
srcPointer++;
}
WriteData(0x00);
}
void ssd1306_drawstring(const char *dataPtr, unsigned char row, unsigned char xPos)
{
char *srcPointer;
srcPointer = (char*)dataPtr;
ssd1306_drawchar(' ',row,xPos); // NBSP must be written first before the string start
while(1)
{
ssd1306_drawchar(*srcPointer,row,xPos);
srcPointer++;
xPos+=6;
if(*srcPointer == 0) break;
}
}
void ssd1306_drawstringbig(const char *dataPtr, unsigned char row, unsigned char xPos)
{
char *srcPointer;
srcPointer = (char*)dataPtr;
ssd1306_drawcharbig(' ',row,xPos); // NBSP must be written first before the string start
while(1)
{
ssd1306_drawcharbig(*srcPointer,row,xPos);
srcPointer++;
xPos+=12;
if(*srcPointer == 0) break;
}
}
// vim:softtabstop=4 shiftwidth=4 expandtab
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