This method is made static to force making register Y available to use for data on AVR - if the method is non-static, then gcc will use register Y for the this pointer.
| 477 | // This method is made static to force making register Y available to use for data on AVR - if the method is non-static, then |
| 478 | // gcc will use register Y for the this pointer. |
| 479 | static void /*__attribute__((optimize("O0")))*/ /*__attribute__ ((always_inline))*/ showRGBInternal(PixelController<RGB_ORDER> & pixels) { |
| 480 | u8 *data = (u8*)pixels.mData; |
| 481 | data_ptr_t port = FastPin<DATA_PIN>::port(); |
| 482 | data_t mask = FastPin<DATA_PIN>::mask(); |
| 483 | u8 scale_base = 0; |
| 484 | |
| 485 | // FASTLED_REGISTER uint8_t *end = data + nLeds; |
| 486 | data_t hi = *port | mask; |
| 487 | data_t lo = *port & ~mask; |
| 488 | *port = lo; |
| 489 | |
| 490 | // the byte currently being written out |
| 491 | u8 b0 = 0; |
| 492 | // the byte currently being worked on to write the next out |
| 493 | u8 b1 = 0; |
| 494 | |
| 495 | // Setup the pixel controller |
| 496 | pixels.preStepFirstByteDithering(); |
| 497 | |
| 498 | // pull the dithering/adjustment values out of the pixels object for direct asm access |
| 499 | |
| 500 | // even though advanceBy is only an int8, we cast it to int16 for sign extension in case it's negative. |
| 501 | i16 advanceBy = pixels.advanceBy(); |
| 502 | u16 count = pixels.mLen; |
| 503 | |
| 504 | u8 s0 = pixels.mColorAdjustment.premixed.raw[RO(0)]; |
| 505 | u8 s1 = pixels.mColorAdjustment.premixed.raw[RO(1)]; |
| 506 | u8 s2 = pixels.mColorAdjustment.premixed.raw[RO(2)]; |
| 507 | #if (FASTLED_SCALE8_FIXED==1) |
| 508 | s0++; s1++; s2++; |
| 509 | #endif |
| 510 | u8 d0 = pixels.d[RO(0)]; |
| 511 | u8 d1 = pixels.d[RO(1)]; |
| 512 | u8 d2 = pixels.d[RO(2)]; |
| 513 | u8 e0 = pixels.e[RO(0)]; |
| 514 | u8 e1 = pixels.e[RO(1)]; |
| 515 | u8 e2 = pixels.e[RO(2)]; |
| 516 | |
| 517 | u8 loopvar=0; |
| 518 | |
| 519 | // This has to be done in asm to keep gcc from messing up the asm code further down |
| 520 | b0 = data[RO(0)]; |
| 521 | { |
| 522 | LDSCL4(b0,O0) PRESCALEA2(d0) |
| 523 | PRESCALEB4(d0) SCALE02(b0,0) |
| 524 | RORSC04(b0,1) ROR1(b0) CLC1 |
| 525 | SCROR04(b0,2) SCALE02(b0,3) |
| 526 | RORSC04(b0,4) ROR1(b0) CLC1 |
| 527 | SCROR04(b0,5) SCALE02(b0,6) |
| 528 | RORSC04(b0,7) ROR1(b0) CLC1 |
| 529 | MOV_ADDDE04(b1,b0,d0,e0) |
| 530 | MOV1(b0,b1) |
| 531 | } |
| 532 | |
| 533 | { |
| 534 | // while(--count) |
| 535 | { |
| 536 | // Loop beginning |
no test coverage detected