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Select new row earlier to avoid lighting pixel on previous row very slightly

pull/666/head
Mike Bell 2023-02-10 10:36:56 +00:00
rodzic c4decc5003
commit 3371b6c751
2 zmienionych plików z 9 dodań i 8 usunięć
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11
libraries/galactic_unicorn/galactic_unicorn.cpp
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@ -154,13 +154,14 @@ namespace pimoroni {
uint8_t *p = &bitstream[row * ROW_BYTES + (BCD_FRAME_BYTES * frame)];
p[ 0] = WIDTH - 1; // row pixel count
p[56] = row; // row select
p[ 1] = row; // row select
// set the number of bcd ticks for this frame
uint32_t bcd_ticks = (1 << frame);
p[57] = (bcd_ticks & 0xff) >> 0;
p[58] = (bcd_ticks & 0xff00) >> 8;
p[59] = (bcd_ticks & 0xff0000) >> 16;
p[56] = (bcd_ticks & 0xff) >> 0;
p[57] = (bcd_ticks & 0xff00) >> 8;
p[58] = (bcd_ticks & 0xff0000) >> 16;
p[59] = (bcd_ticks & 0xff000000) >> 24;
}
}
@ -485,7 +486,7 @@ namespace pimoroni {
// set the appropriate bits in the separate bcd frames
for(uint8_t frame = 0; frame < BCD_FRAME_COUNT; frame++) {
uint8_t *p = &bitstream[y * ROW_BYTES + (BCD_FRAME_BYTES * frame) + 1 + x];
uint8_t *p = &bitstream[y * ROW_BYTES + (BCD_FRAME_BYTES * frame) + 2 + x];
uint8_t red_bit = gamma_r & 0b1;
uint8_t green_bit = gamma_g & 0b1;

6
libraries/galactic_unicorn/galactic_unicorn.pio
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@ -33,6 +33,7 @@
; loop over row pixels
out y, 8 ; get row pixel count (minus 1 because test is pre decrement)
out pins, 8 ; output row select
pixels:
; red bit
@ -63,15 +64,14 @@ pixels:
jmp y-- pixels
out null, 16 ; discard dummy bytes
out null, 8 ; discard dummy bytes
out pins, 8 ; output row select
set pins, 0b110 [5] ; latch high, blank high
set pins, 0b000 ; blank low (enable output)
; loop over bcd delay period
out y, 24 ; get bcd delay counter value
out y, 32 ; get bcd delay counter value
bcd_delay:
jmp y-- bcd_delay