ili9341: moved text functions to dedicated source file.

avr/devices/all/includes.asm

@@ -157,6 +157,7 @@
 .include "modules/lcd2/ili9341/main.asm"
 .include "modules/lcd2/ili9341/io_spi.asm"
 .include "modules/lcd2/ili9341/font8x8.asm"
+.include "modules/lcd2/ili9341/text.asm"
 #endif
 
 

avr/modules/lcd2/ili9341/main.asm

@@ -112,8 +112,23 @@ ILI9341_Init:
   mov r3, r16
 
 ; set character
-  ldi r16, 65
+  ldi r16, 'A'
-  rcall ili9341_WriteCharacterX4At
+  rcall ili9341PrintChar
+
+  ldi r16, 'Q'
+  rcall ili9341PrintChar
+
+  ldi r16, 'H'
+  rcall ili9341PrintChar
+
+  ldi r16, 'O'
+  rcall ili9341PrintChar
+
+  ldi r16, 'M'
+  rcall ili9341PrintChar
+
+  ldi r16, 'E'
+  rcall ili9341PrintChar
 
   sec
   ret
@@ -121,6 +136,16 @@ ILI9341_Init:
 
 
 
+ili9341PrintChar:
+  push zl
+    push zh
+      rcall ili9341_WriteCharacterX4At
+    pop zh
+  pop zl
+  ret
+
+
+
 ; ---------------------------------------------------------------------------
 ; @routine ILI9341_Fini @global
 
@@ -433,7 +458,7 @@ ili9341BitBlit_loopW:
 ; @param  r9:r8   W
 ; @param  r11:r10 H
 ; @param  X       source data pointer (RAM)
-; @clobbers r16, r22, r23, r24, r25, X (r17, r20, r21)
+; @clobbers r16, r22, r23, r24, r25, X (r17, r18, r19, r20, r21)
 
 ili9341BitBlitStretch2:
   push r15
@@ -589,107 +614,6 @@ ili9341BitBlitStretchNWriteLine_loop2:
 
 
 
-; ---------------------------------------------------------------------------
-; @routine ili9341_WriteCharacterX1At
-
-; @param  R16    character to write
-; @param  r5:r4  X
-; @param  r7:r6  Y
-; @param  r1:r0  background color
-; @param  r3:r2  foreground color
-; @param  Z      pointer to font
-; @param  X      pointer to RAM to store data to
-; @return r5:r4  new X (advanced by character width)
-; @clobbers r16, r17, r18, r19, r24, r25, x, z
-
-ili9341_WriteCharacterX1At:
-  ; render character
-  push xl
-    push xh
-      rcall ili9341WriteCharacterFromFont8x8 ; (r17, r24, r25, x, z)
-    pop xh
-  pop xl
-
-  ; set width and height
-  ldi r16, 8
-  mov r8, r16
-  clr r9
-  mov r10, r16
-  clr r11
-
-  rjmp ili9341BitBlit
-; @end
-
-
-
-
-; ---------------------------------------------------------------------------
-; @routine ili9341_WriteCharacterX2At
-
-; @param  R16    character to write
-; @param  r5:r4  X
-; @param  r7:r6  Y
-; @param  r1:r0  background color
-; @param  r3:r2  foreground color
-; @param  Z      pointer to font
-; @param  X      pointer to RAM to store data to
-; @return r5:r4  new X (advanced by character width)
-; @clobbers r16, r17, r18, r19, r24, r25, x, z
-
-ili9341_WriteCharacterX2At:
-  ; render character
-  push xl
-    push xh
-      rcall ili9341WriteCharacterFromFont8x8 ; (r17, r24, r25, x, z)
-    pop xh
-  pop xl
-
-  ; set width and height
-  ldi r16, 8
-  mov r8, r16
-  clr r9
-  mov r10, r8
-  clr r11
-
-  rjmp ili9341BitBlitStretch2
-; @end
-
-
-
-; ---------------------------------------------------------------------------
-; @routine ili9341_WriteCharacterX4At
-
-; @param  R16    character to write
-; @param  r5:r4  X
-; @param  r7:r6  Y
-; @param  r1:r0  background color
-; @param  r3:r2  foreground color
-; @param  Z      pointer to font
-; @param  X      pointer to RAM to store data to
-; @return r5:r4  new X (advanced by character width)
-; @clobbers r16, r17, r18, r19, r24, r25, x, z
-
-ili9341_WriteCharacterX4At:
-  ; render character
-  push xl
-    push xh
-      rcall ili9341WriteCharacterFromFont8x8 ; (r17, r24, r25, x, z)
-    pop xh
-  pop xl
-
-  ; set width and height
-  ldi r16, 8
-  mov r8, r16
-  clr r9
-  mov r10, r8
-  clr r11
-
-  rjmp ili9341BitBlitStretch4
-; @end
-
-
-
-
 
 
 

avr/modules/lcd2/ili9341/text.asm

@@ -0,0 +1,125 @@
+; ***************************************************************************
+; copyright   : (C) 2025 by Martin Preuss
+; email       : martin@libchipcard.de
+;
+; ***************************************************************************
+; * This file is part of the project "AqHome".                              *
+; * Please see toplevel file COPYING of that project for license details.   *
+; ***************************************************************************
+
+
+; ***************************************************************************
+; code
+
+.cseg
+
+
+
+; ---------------------------------------------------------------------------
+; @routine ili9341_WriteCharacterX1At
+
+; @param  R16    character to write
+; @param  r5:r4  X
+; @param  r7:r6  Y
+; @param  r1:r0  background color
+; @param  r3:r2  foreground color
+; @param  Z      pointer to font
+; @param  X      pointer to RAM to store data to
+; @return r5:r4  new X (advanced by character width)
+; @clobbers r16 (r17, r20, r21, r22, r23, r24, r25, X)
+
+ili9341_WriteCharacterX1At:
+  rcall ili9341PrepareCharFromFont ; (r16, r17, r24, r25, z)
+  rcall ili9341BitBlit             ; (r16, r17, r20, r21, r22, r23, r24, r25, X)
+  ldi r16, 8
+  add r4, r16
+  adc r5, r16
+  sub r5, r16
+  ret
+; @end
+
+
+
+
+; ---------------------------------------------------------------------------
+; @routine ili9341_WriteCharacterX2At
+
+; @param  R16    character to write
+; @param  r5:r4  X
+; @param  r7:r6  Y
+; @param  r1:r0  background color
+; @param  r3:r2  foreground color
+; @param  Z      pointer to font
+; @param  X      pointer to RAM to store data to
+; @return r5:r4  new X (advanced by character width)
+; @clobbers r16 (r17, r18, r19, r20, r21, r22, r23, r24, r25, X)
+
+ili9341_WriteCharacterX2At:
+  rcall ili9341PrepareCharFromFont ; (r16, r17, r24, r25, z)
+  rcall ili9341BitBlitStretch2     ; (r16, r17, r18, r19, r20, r21, r22, r23, r24, r25, X)
+  ldi r16, 16
+  add r4, r16
+  adc r5, r16
+  sub r5, r16
+  ret
+; @end
+
+
+
+; ---------------------------------------------------------------------------
+; @routine ili9341_WriteCharacterX4At
+
+; @param  R16    character to write
+; @param  r5:r4  X
+; @param  r7:r6  Y
+; @param  r1:r0  background color
+; @param  r3:r2  foreground color
+; @param  Z      pointer to font
+; @param  X      pointer to RAM to store data to
+; @return r5:r4  new X (advanced by character width)
+; @clobbers r16, r17, r18, r19, r24, r25, x, z
+
+ili9341_WriteCharacterX4At:
+  rcall ili9341PrepareCharFromFont ; (r16, r17, r24, r25, z)
+  rcall ili9341BitBlitStretch4
+  ldi r16, 32
+  add r4, r16
+  adc r5, r16
+  sub r5, r16
+  ret
+; @end
+
+
+
+
+
+; ---------------------------------------------------------------------------
+; @routine ili9341PrepareCharFromFont
+
+; @param  R16     character to write
+; @param  Z       pointer to font
+; @param  X       pointer to RAM to store data to
+; @param  r9:r8   character width in points
+; @param  r11:r10 character height in points
+; @clobbers r16 (r17, r24, r25, z)
+
+ili9341PrepareCharFromFont:
+  ; render character
+  push xl
+    push xh
+      rcall ili9341WriteCharacterFromFont8x8 ; (r17, r24, r25, x, z)
+    pop xh
+  pop xl
+
+  ; set width and height
+  ldi r16, 8
+  mov r8, r16
+  clr r9
+  mov r10, r16
+  clr r11
+
+  ret
+; @end
+
+
+