Files
@ 6cc8fa5ae0f6
Branch filter:
Location: therm-ng/src/display.c
6cc8fa5ae0f6
20.5 KiB
text/plain
Temp reading finally working!
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 | //
// Display: render menus on OLED display
//
#include "display.h"
#include "gpio.h"
#include "ssd1306/ssd1306.h"
#include "system/stringhelpers.h"
#include "flash.h"
// Private function prototypes
static void draw_setpoint(therm_status_t* status);
// Button transition variables
static uint8_t sw_btn_last = 0;
static uint8_t sw_up_last = 0;
static uint8_t sw_down_last = 0;
static uint8_t sw_left_last = 0;
static uint8_t sw_right_last = 0;
// Buttonpress macros
#define SW_BTN_PRESSED (sw_btn_last == 0 && sw_btn == 1) // rising edge on buttonpress
#define SW_UP_PRESSED (sw_up_last == 0 && sw_up == 1)
#define SW_DOWN_PRESSED (sw_down_last == 0 && sw_down == 1)
#define SW_LEFT_PRESSED (sw_left_last == 0 && sw_left == 1)
#define SW_RIGHT_PRESSED (sw_right_last == 0 && sw_right == 1)
// States
static uint8_t trigger_drawsetpoint = 1;
static int16_t last_temp = 21245;
static int16_t last_temp_frac = 21245;
static int16_t last_state = 123;
static uint8_t goto_mode = MODE_HEAT;
static uint8_t reset_mode = RESET_REBOOT;
static char* sensor_lookup[] = {"NTC", "K ", "E ", "N ", "R ", "S ", "T "};
static uint8_t toggle = 0;
void display_1hz(void)
{
toggle = !toggle;
}
static char updown(void)
{
if(toggle)
return '\x8f';
else
return '\x90';
}
// Display state machine
void display_process(void)
{
therm_status_t* status = runtime_status();
therm_settings_t* set = flash_getsettings();
uint8_t state_changed = status->state != last_state;
last_state = status->state;
uint8_t temp_changed = status->temp != last_temp;
last_temp = status->temp;
uint8_t sw_btn = !HAL_GPIO_ReadPin(SW_BTN);
uint8_t sw_up = !HAL_GPIO_ReadPin(SW_UP);
uint8_t sw_down = !HAL_GPIO_ReadPin(SW_DOWN);
uint8_t sw_left = !HAL_GPIO_ReadPin(SW_LEFT);
uint8_t sw_right = !HAL_GPIO_ReadPin(SW_RIGHT);
switch(status->state)
{
// Idle state
case STATE_IDLE:
{
// Write text to OLED
// [ therm :: idle ]
ssd1306_drawstring("therm \x87 idle ", 0, 40);
status->pid_enabled = 0;
if(temp_changed || state_changed) {
char tempstr[16];
snprintf(tempstr, 16, "Temp: %6.1f", status->temp);
// ssd1306_drawstring(" ", 3, 40);
ssd1306_drawstring(tempstr, 3, 40);
}
if (state_changed) {
ssd1306_drawlogo();
}
switch(goto_mode) {
case MODE_HEAT:
{
if(set->val.plant_type == PLANT_HEATER)
ssd1306_drawstring("\x83 heat ", 1, 40);
else
ssd1306_drawstring("\x83 cool ", 1, 40);
} break;
case MODE_SETUP:
{
ssd1306_drawstring("\x83 setup ", 1, 40);
} break;
case MODE_RESET:
{
ssd1306_drawstring("\x83 reset ", 1, 40);
} break;
#ifdef BOOTLOADER_SHORTCUT
case MODE_BOOTLOADER:
{
ssd1306_drawstring("\x83 dfu ", 1, 40);
}
#endif
}
// Button handler
if(SW_BTN_PRESSED) {
switch(goto_mode) {
case MODE_HEAT:
status->state = STATE_PREHEAT;
break;
case MODE_SETUP:
status->state = STATE_SETSENSORTYPE;
break;
case MODE_RESET:
status->state = STATE_RESET;
reset_mode = RESET_REBOOT;
break;
#ifdef BOOTLOADER_SHORTCUT
case MODE_BOOTLOADER:
ssd1306_clearscreen();
ssd1306_drawstring("Bootloader Entered", 0, 0);
ssd1306_drawstring("Device won't boot", 2, 0);
ssd1306_drawstring("until reflashed!", 3, 0);
// bootloader_enter(); // Resets into bootloader
status->state = STATE_RESET; // Just in case
break;
#endif
default:
status->state = STATE_PREHEAT;
}
}
else if(SW_DOWN_PRESSED && goto_mode < (MODE_SIZE - 1)) {
goto_mode++;
}
else if(SW_UP_PRESSED && goto_mode > 0) {
goto_mode--;
}
// Event Handler
// N/A
} break;
case STATE_SETSENSORTYPE:
{
// Write text to OLED
// [ therm :: set mode ]
// [ m = ]
ssd1306_drawstring("Sensor Type", 0, 40);
ssd1306_drawlogo();
ssd1306_drawchar(updown(), 1, 52);
ssd1306_drawstring(sensor_lookup[set->val.sensor_type], 1, 60);
ssd1306_drawstring("Press to accept", 3, 40);
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_SETMODE;
}
else
{
user_input((uint16_t*)&set->val.sensor_type);
if(set->val.sensor_type > 6)
set->val.sensor_type = 6;
}
// Event Handler
// N/A
} break;
case STATE_SETMODE:
{
// Write text to OLED
// [ therm :: set mode ]
// [ m = ]
ssd1306_drawstring("Control Mode", 0, 40);
ssd1306_drawlogo();
ssd1306_drawchar(updown(), 1, 52);
if(set->val.control_mode == MODE_PID)
ssd1306_drawstring("PID ", 1, 60);
else
ssd1306_drawstring("Thermostat", 1, 60);
ssd1306_drawstring("Press to accept", 3, 40);
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_SETPLANTTYPE;
}
else if (!HAL_GPIO_ReadPin(SW_UP)) {
set->val.control_mode = MODE_PID;
}
else if(!HAL_GPIO_ReadPin(SW_DOWN)) {
set->val.control_mode = MODE_THERMOSTAT;
}
// Event Handler
// N/A
} break;
case STATE_SETPLANTTYPE:
{
// Write text to OLED
// [ therm :: set mode ]
// [ m = ]
ssd1306_drawstring("Plant Type", 0, 40);
ssd1306_drawlogo();
ssd1306_drawchar(updown(), 1, 52 );
if(set->val.plant_type == PLANT_HEATER)
ssd1306_drawstring("Heater", 1, 60);
else
ssd1306_drawstring("Cooler", 1, 60);
ssd1306_drawstring("Press to accept", 3, 40);
// Button handler
if(SW_BTN_PRESSED) {
if(set->val.control_mode == MODE_PID)
status->state = STATE_SETP;
else
status->state = STATE_SETHYSTERESIS;
}
else if (!HAL_GPIO_ReadPin(SW_UP)) {
set->val.plant_type = PLANT_COOLER;
}
else if(!HAL_GPIO_ReadPin(SW_DOWN)) {
set->val.plant_type = PLANT_HEATER;
}
// Event Handler
// N/A
} break;
case STATE_SETP:
{
// Write text to OLED
// [ therm :: set p ]
// [ p = 12 ]
ssd1306_drawstring("Proportional", 0, 40);
ssd1306_drawlogo();
ssd1306_drawchar(updown(), 1, 52);
char tempstr[12];
snprintf(tempstr, 12, "P=%d", set->val.k_p);
ssd1306_drawstring(tempstr, 1, 60);
ssd1306_drawstring("Press to accept", 3, 40);
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_SETI;
}
else {
user_input((uint16_t*)&set->val.k_p);
}
// Event Handler
// N/A
} break;
case STATE_SETI:
{
// Write text to OLED
// [ therm :: set i ]
// [ i = 12 ]
ssd1306_drawstring("Integral", 0, 40);
ssd1306_drawlogo();
ssd1306_drawchar(updown(), 1, 52);
char tempstr[12];
snprintf(tempstr, 12, "I=%d", set->val.k_i);
ssd1306_drawstring(tempstr, 1, 60);
ssd1306_drawstring("Press to accept", 3, 40);
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_SETD;
}
else {
user_input((uint16_t*)&set->val.k_i);
}
// Event Handler
// N/A
} break;
case STATE_SETD:
{
// Write text to OLED
// [ therm :: set d ]
// [ d = 12 ]
ssd1306_drawstring("Derivative", 0, 40);
ssd1306_drawlogo();
ssd1306_drawchar(updown(), 1, 52);
char tempstr[12];
snprintf(tempstr, 12, "D=%d", set->val.k_d);
ssd1306_drawstring(tempstr, 1, 60);
ssd1306_drawstring("Press to accept", 3, 40);
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_SETWINDUP;
}
else {
user_input((uint16_t*)&set->val.k_d);
}
// Event Handler
// N/A
} break;
case STATE_SETHYSTERESIS:
{
// Write text to OLED
ssd1306_drawstring("Hysteresis", 0, 40);
ssd1306_drawlogo();
ssd1306_drawchar(updown(), 1, 52);
char tempstr[12];
snprintf(tempstr, 12, "H=%d", set->val.hysteresis);
ssd1306_drawstring(tempstr, 1, 60);
ssd1306_drawstring("Press to accept", 3, 40);
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_SETBOOTTOBREW;
}
else {
user_input((uint16_t*)&set->val.hysteresis);
}
// Event Handler
// N/A
} break;
case STATE_SETWINDUP:
{
// Write text to OLED
// [ therm :: set windup ]
// [ g = 12 ]
ssd1306_drawstring("Windup Guard", 0, 40);
ssd1306_drawlogo();
ssd1306_drawchar(updown(), 1, 52);
char tempstr[12];
snprintf(tempstr, 12, "G=%d", set->val.windup_guard);
ssd1306_drawstring(tempstr, 1, 60);
ssd1306_drawstring("Press to accept", 3, 40);
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_SETBOOTTOBREW;
}
else {
user_input((uint16_t*)&set->val.windup_guard);
}
// Event Handler
// N/A
} break;
case STATE_SETBOOTTOBREW:
{
// Write text to OLED
// [ therm :: set windup ]
// [ g = 12 ]
ssd1306_drawstring("Start on Boot", 0, 40);
ssd1306_drawlogo();
ssd1306_drawstring("sob=", 1, 50);
ssd1306_drawchar(updown(), 1, 43);
if(set->val.boottobrew)
ssd1306_drawstring("Enable ", 1, 75);
else
ssd1306_drawstring("Disable", 1, 75);
ssd1306_drawstring("Press to accept", 3, 40);
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_SETUNITS;
}
else if(!HAL_GPIO_ReadPin(SW_UP)) {
set->val.boottobrew = 1;
}
else if(!HAL_GPIO_ReadPin(SW_DOWN)) {
set->val.boottobrew = 0;
}
// Event Handler
// N/A
} break;
case STATE_SETUNITS:
{
// Write text to OLED
// [ therm :: set windup ]
// [ g = 12 ]
ssd1306_drawstring("Units: ", 0, 40);
ssd1306_drawlogo();
ssd1306_drawchar(updown(), 1, 52);
if(set->val.temp_units == TEMP_UNITS_FAHRENHEIT)
ssd1306_drawstring("Fahrenheit", 1, 60);
else
ssd1306_drawstring("Celsius ", 1, 60);
ssd1306_drawstring("Press to accept", 3, 40);
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_SETTEMPOFFSET;
}
else if(!HAL_GPIO_ReadPin(SW_UP)) {
set->val.temp_units = TEMP_UNITS_FAHRENHEIT;
}
else if(!HAL_GPIO_ReadPin(SW_DOWN)) {
set->val.temp_units = TEMP_UNITS_CELSIUS;
}
// Event Handler
// N/A
} break;
case STATE_SETTEMPOFFSET:
{
// Write text to OLED
// [ therm :: set temp offset ]
// [ g = 12 ]
ssd1306_drawstring("Temp Cal Offset", 0, 40);
ssd1306_drawlogo();
ssd1306_drawchar(updown(), 1, 52);
char tempstr[12];
snprintf(tempstr, 12, "O=%d", set->val.temp_offset);
ssd1306_drawstring(tempstr, 1, 60);
ssd1306_drawstring("Press to accept", 3, 40);
// Button handler
if(SW_BTN_PRESSED) {
// flash_save(set);
status->state = STATE_IDLE;
}
else {
user_input_signed(&set->val.temp_offset);
}
// Event Handler
// N/A
} break;
case STATE_PREHEAT:
{
// Write text to OLED
// [ therm : preheating brew ]
// [ 30 => 120 C ]
if(set->val.plant_type == PLANT_HEATER)
ssd1306_drawstring("Preheating...", 0, 0);
else
ssd1306_drawstring("Precooling...", 0, 0);
//ssd1306_drawlogo();
draw_setpoint(status);
status->pid_enabled = 1;
status->setpoint = set->val.setpoint_brew;
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_IDLE;
}
else {
user_input_signed(&set->val.setpoint_brew);
}
// Event Handler
if(status->temp >= status->setpoint) {
status->state = STATE_MAINTAIN;
}
} break;
case STATE_MAINTAIN:
{
// Write text to OLED
// [ therm : ready to brew ]
// [ 30 => 120 C ]
if(set->val.plant_type == PLANT_HEATER)
ssd1306_drawstring("Preheated!", 0, 0);
else
ssd1306_drawstring("Precooled!", 0, 0);
draw_setpoint(status);
status->pid_enabled = 1;
status->setpoint = set->val.setpoint_brew;
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_IDLE;
}
else {
user_input_signed(&set->val.setpoint_brew);
}
// Event Handler
// N/A
} break;
// Thermocouple error
case STATE_TC_ERROR:
{
// Write text to OLED
// [ therm : ready to steam ]
// [ 30 => 120 C ]
ssd1306_drawstring("Error: ", 0, 0);
char tempstr[6];
itoa(status->error_code, tempstr, 10);
ssd1306_drawstring(tempstr, 0, 57);
//TODO: add RTD error codes
if(status->error_code == 1)
ssd1306_drawstring(" TC Open Circuit", 1, 0);
else if(status->error_code == 4)
ssd1306_drawstring(" TC Short to GND", 1, 0);
else if(status->error_code == 8)
ssd1306_drawstring(" TC Short to VCC", 1, 0);
else
ssd1306_drawstring("#?, Unknown Error", 1, 0);
ssd1306_drawstring(" ", 2, 0);
ssd1306_drawstring("-> to ignore all or", 2, 0);
ssd1306_drawstring("press to continue", 3, 0);
// Button handler
if(SW_BTN_PRESSED) {
status->state = STATE_IDLE;
#ifdef MAX31865_RTD_SENSOR
max31865_clear_errors(spi_get());
#endif
}
else if(SW_RIGHT_PRESSED) {
set->val.ignore_error = 1;
status->state = STATE_IDLE;
}
// Event Handler
// Maybe handle if TC is plugged in
// N/A
} break;
// Reset state
case STATE_RESET:
{
// Write text to OLED
// [ therm :: reset ]
ssd1306_drawstring("therm :: reset ", 0, 40);
status->pid_enabled = 0;
ssd1306_drawlogo();
switch(reset_mode) {
case RESET_DEFAULTS:
{
ssd1306_drawstring("-> defaults ", 1, 40);
} break;
case RESET_BOOTLOADER:
{
ssd1306_drawstring("-> bootloader ", 1, 40);
} break;
case RESET_REBOOT:
{
ssd1306_drawstring("-> reboot ", 1, 40);
} break;
case RESET_EXIT:
{
ssd1306_drawstring("-> exit ", 1, 40);
} break;
}
// Button handler
if(SW_BTN_PRESSED) {
switch(reset_mode) {
case RESET_BOOTLOADER:
{
ssd1306_clearscreen();
ssd1306_drawstring("Bootloader Entered", 0, 0);
ssd1306_drawstring("Device won't boot", 2, 0);
ssd1306_drawstring("until reflashed!", 3, 0);
HAL_Delay(1000);
// bootloader_enter(); // Resets into bootloader
status->state = STATE_RESET; // Just in case
} break;
case RESET_DEFAULTS:
{
status->state = STATE_RESET;
// flash_load_defaults(set);
// flash_save(set);
NVIC_SystemReset();
} break;
case RESET_REBOOT:
{
status->state = STATE_RESET;
NVIC_SystemReset();
} break;
case RESET_EXIT:
{
status->state = STATE_IDLE;
} break;
}
}
else if(SW_DOWN_PRESSED && reset_mode < (RESET_SIZE-1)) {
reset_mode++;
}
else if(SW_UP_PRESSED && reset_mode > 0) {
reset_mode--;
}
// Event Handler
// N/A
} break;
// Something is terribly wrong
default:
{
status->state = STATE_IDLE;
status->pid_enabled = 0;
} break;
}
if(last_state != status->state) {
// Clear screen on state change
goto_mode = MODE_HEAT;
trigger_drawsetpoint = 1;
ssd1306_clearscreen();
}
// Last buttonpress
sw_btn_last = sw_btn;
sw_up_last = sw_up;
sw_down_last = sw_down;
sw_left_last = sw_left;
sw_right_last = sw_right;
}
static float temp_last = 43002.0;
static float setpoint_last = 10023.0;
// Draw current setpoint on display
static void draw_setpoint(therm_status_t* status) {
// FIXME: need to do this when switching modes too
if(status->temp != temp_last || trigger_drawsetpoint) {
char tempstr[8];
snprintf(tempstr, 8, "%g ", status->temp);
ssd1306_drawstringbig(tempstr, 3, 0);
}
if(trigger_drawsetpoint)
ssd1306_drawstringbig(">", 3, 74);
if(status->setpoint != setpoint_last || trigger_drawsetpoint) {
char tempstr[4];
snprintf(tempstr, 4, "%g ", status->setpoint);
ssd1306_drawstringbig(tempstr, 3, 90);
}
trigger_drawsetpoint = 0;
setpoint_last = status->setpoint;
temp_last = status->temp;
}
void display_startup_screen() {
ssd1306_clearscreen();
ssd1306_drawstring("therm v0.4", 1, 40);
ssd1306_drawstring("protofusion.org/therm", 3, 0);
}
// vim:softtabstop=4 shiftwidth=4 expandtab
|