set Sega to 2bpp

Author: mkalkbrenner

src/dmd_interface_desega.pio

@@ -29,9 +29,8 @@
 dotloop1:
     wait 0 gpio DOTCLK  ; falling edge
     wait 1 gpio DOTCLK  ; raising edge
-    in null 2           ; padding
     in pins 1           ; read pin data
-    in null 1
+    in null 1           ; right padding
     jmp x-- dotloop1
 
     mov x, y            ; load number of pixels
@@ -46,7 +45,7 @@ dotloop1:
 dotloop2:
     wait 0 gpio DOTCLK  ; falling edge
     wait 1 gpio DOTCLK  ; raising edge
-    in null 3           ; padding
+    in null 1           ; left padding
     in pins 1           ; read pin data
     jmp x-- dotloop2
 
@@ -65,7 +64,7 @@ dotloop2:
 wait_low:
     wait 0 gpio DE      ; Wait for DE to go low
 
-    set x, 20           ; Use x as storage for 20 iterations   
+    set x, 20           ; Use x as storage for 20 iterations
 
 delay_loop:
     nop [31]

src/dmd_reader.c

@@ -598,7 +598,7 @@ bool init()
         lcd_pixelsperbyte = 8 / lcd_bitsperpixel;
         lcd_planesperframe = 2;                                  // in Whitestar, there's a MSB and a LSB plane
         lcd_lineoversampling = LINEOVERSAMPLING_WHITESTAR;       // in Whitestar each line is sent twice
-        //lcd_mergeplanes = MERGEPLANES_ADDSHIFT;                  // required for correct 2bpp merge
+        lcd_mergeplanes = MERGEPLANES_ADDSHIFT;                  // required for correct 2bpp merge
     } else if (dmd_type == DMD_SPIKE1)  {
         dmd_pio = pio0;
         offset = pio_add_program(dmd_pio, &dmd_reader_spike_program);