721 lines
15 KiB
NASM
721 lines
15 KiB
NASM
; ***************************************************************************
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; copyright : (C) 2025 by Martin Preuss
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; email : martin@libchipcard.de
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;
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; ***************************************************************************
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; * This file is part of the project "AqHome". *
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; * Please see toplevel file COPYING of that project for license details. *
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; ***************************************************************************
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; generally we use the following parameters here:
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; @param r1:r0 background color
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; @param r3:r2 foreground color
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; @param r5:r4 X0
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; @param r7:r6 Y0
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; @param r9:r8 X1/W
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; @param r11:r10 Y1/H
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; ***************************************************************************
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; data
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.dseg
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ILI9341_buffer: .byte 128
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; ***************************************************************************
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; code
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.cseg
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; ---------------------------------------------------------------------------
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; @routine ILI9341_Init @global
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ILI9341_Init:
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rcall ILI9341IoInit
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rcall ILI9341_Reset
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rcall ILI9341_LeaveSleepMode
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ldi r16, 0xff
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rcall ILI9341_SetBacklight
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ldi r16, 0xff
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mov r3, r16
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ldi r16, 0xff
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mov r2, r16
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rcall ili9341Test5
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; 0bRRRRRGGGGGGBBBBB
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ldi r16, 0b11111000 ; red
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mov r3, r16
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ldi r16, 0b00000000 ; red
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mov r2, r16
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rcall ili9341Test2
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; 0bRRRRRGGGGGGBBBBB
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ldi r16, 0b00000000
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mov r3, r16
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ldi r16, 0b00011111 ; blue
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mov r2, r16
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rcall ili9341Test3
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; 0bRRRRRGGGGGGBBBBB
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ldi r16, 0b00000111 ; green
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mov r3, r16
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ldi r16, 0b11100000 ; green
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mov r2, r16
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rcall ili9341Test4
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; set foreground color
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ldi r16, 0b11100000 ; green
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mov r2, r16
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ldi r16, 0b00000111 ; green
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mov r3, r16
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; set background color
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ldi r16, 0b11111111 ; white
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mov r0, r16
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mov r1, r16
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; set Xpos
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ldi r16, LOW(100)
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mov r4, r16
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ldi r16, HIGH(100)
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mov r5, r16
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; setYpos
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ldi r16, LOW(150)
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mov r6, r16
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ldi r16, HIGH(150)
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mov r7, r16
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; set font pos
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ldi zl, LOW(font8x8*2)
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ldi zh, HIGH(font8x8*2)
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; set buffer pos
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; ldi xl, LOW(ILI9341_buffer)
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; ldi xh, HIGH(ILI9341_buffer)
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ldi xl, LOW(0x260)
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ldi xh, HIGH(0x260)
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; set character
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ldi r16, 65
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rcall ili9341_WriteCharacterX2At
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sec
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine ILI9341_Fini @global
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ILI9341_Fini:
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine ili9341_SendCommands
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;
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; @clobbers r16
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; Z=byte pointer to command list (as for LPM)
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ili9341SendCommands:
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rcall ili9341BeginSpi
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ili9341SendCommands_loop1:
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lpm r16, Z+ ; read command
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lpm r18, Z+ ; read number of args
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cpi r18, 0xff ; end?
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breq ili9341SendCommands_end
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rcall ili9341SendCommand
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mov r19, r18
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andi r19, 1 ; if 1: need to skip filler byte
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tst r18
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breq ili9341SendCommands_loop1 ; no args, next command
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ili9341SendCommands_loop2:
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lpm r16, Z+
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rcall ili9341SendData ; (R16)
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dec r18
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brne ili9341SendCommands_loop2
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add zl, r19 ; possibly skip filler byte
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adc zh, r19
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sub zh, r19
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rjmp ili9341SendCommands_loop1
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ili9341SendCommands_end:
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rcall ili9341EndSpi ; (R16)
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine ILI9341_Reset @global
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; @clobbers (R22)
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ILI9341_Reset:
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cbi ILI9341_RESET_OUTPUT, ILI9341_RESET_PIN
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ldi r16, 100
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rcall Utils_WaitForMilliSecs
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sbi ILI9341_RESET_OUTPUT, ILI9341_RESET_PIN
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ldi r16, 50
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rcall Utils_WaitForMilliSecs
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ldi zl, LOW(ili9341InitCommands*2)
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ldi zh, HIGH(ili9341InitCommands*2)
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rcall ili9341SendCommands
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ldi r16, 120
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rcall Utils_WaitForMilliSecs
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rcall ili9341BeginSpi
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ldi r16, 0x29
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rcall ili9341SendCommand
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rcall ili9341EndSpi
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ldi r16, 120
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rcall Utils_WaitForMilliSecs
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine ILI9341_SetBacklight @global
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;
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; @param r16 0=off, on otherwise
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; @clobbers r16, r17
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ILI9341_SetBacklight:
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tst r16
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brne ILI9341_SetBacklight_on
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cbi ILI9341_LED_OUTPUT, ILI9341_LED_PIN
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ret
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ILI9341_SetBacklight_on:
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sbi ILI9341_LED_OUTPUT, ILI9341_LED_PIN
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push r16
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rcall ili9341BeginSpi
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ldi r16, ILI9341_CMD_WRITECTLDISPLAY
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rcall ili9341SendCommand
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; ldi r16, 0b00100100
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ldi r16, 0x24
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rcall ili9341SendData
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ldi r16, ILI9341_CMD_SETDSPBRIGHTNESS
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rcall ili9341SendCommand
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pop r16
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rcall ili9341SendData
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ldi r16, 0xbe
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rcall ili9341SendCommand
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ldi r16, 0x0f
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rcall ili9341SendData
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rcall ili9341EndSpi
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ret
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; @end
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ILI9341_LeaveSleepMode:
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rcall ili9341BeginSpi
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ldi r16, 0x11 ; sleep out
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rcall ili9341SendCommand
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rcall ili9341EndSpi
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ldi r16, 5
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rcall Utils_WaitForMilliSecs
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine ILI9341_FillScreen
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;
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; @param r17:r16 color
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ILI9341_FillScreen:
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; TODO
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine ILI9341_FillRect
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; @param r3:r2 color
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; @param r5:r4 X0
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; @param r7:r6 Y0
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; @param r9:r8 X1/W
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; @param r11:r10 Y1/H
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ILI9341_FillRect:
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rcall ili9341BeginSpi ; (R16, R17)
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push r8 ; W
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push r9
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push r10
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push r11
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ldi r16, 1
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sub r8, r16 ; X1=X+W-1
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sbc r9, r16
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add r9, r16
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add r8, r4
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adc r9, r5
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sub r10, r16 ; Y1=Y+H-1
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sbc r11, r16
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add r11, r16
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add r10, r6
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adc r11, r7
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rcall ili9341SetAddressWindow ; (R16)
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pop r11
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pop r10
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pop r9
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pop r8
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mov r18, r2 ; color
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mov r19, r3
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mov r22, r10 ; H low
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mov r23, r11 ; H high
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ldi r16, ILI9341_CMD_RAMWR ; start writing ro RAM
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rcall ili9341SendCommand
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ILI9341_FillRect_loopH:
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mov r24, r8 ; W low
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mov r25, r9 ; W high
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ILI9341_FillRect_loopW:
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rcall ili9341Send16BitData ; send r19:r18
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sbiw r25:r24, 1
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brne ILI9341_FillRect_loopW
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mov r24, r22 ; H low
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mov r25, r23 ; H high
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sbiw r25:r24, 1 ; dec
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mov r22, r24 ; save in r23:r22
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mov r23, r25
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brne ILI9341_FillRect_loopH
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rcall ili9341EndSpi
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine ili9341SetAddressWindow
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;
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; @param r5:r4 X0
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; @param r7:r6 Y0
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; @param r9:r8 X1
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; @param r11:r10 Y1
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; @clobbers R16
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ili9341SetAddressWindow:
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; send column address
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ldi r16, ILI9341_CMD_CASET
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rcall ili9341SendCommand
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; X0
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mov r16, r5
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rcall ili9341SendData
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mov r16, r4
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rcall ili9341SendData
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; X1
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mov r16, r9
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rcall ili9341SendData
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mov r16, r8
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rcall ili9341SendData
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; send row address
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ldi r16, ILI9341_CMD_PASET
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rcall ili9341SendCommand
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; Y0
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mov r16, r7
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rcall ili9341SendData
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mov r16, r6
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rcall ili9341SendData
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; Y1
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mov r16, r11
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rcall ili9341SendData
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mov r16, r10
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rcall ili9341SendData
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine ili9341_WriteCharacterX1At
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; @param R16 character to write
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; @param r5:r4 X
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; @param r7:r6 Y
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; @param r1:r0 background color
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; @param r3:r2 foreground color
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; @param Z pointer to font
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; @param X pointer to RAM to store data to
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; @return r5:r4 new X (advanced by character width)
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; @clobbers r16, r17, r18, r19, r24, r25, x, z
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ili9341_WriteCharacterX1At:
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push xl
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push xh
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rcall ili9341WriteCharacterFromFont8x8x1 ; (r17, r24, r25, x, z)
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pop xh
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pop xl
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ldi r17, 7
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; calc X1
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mov r8, r4
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mov r9, r5
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add r8, r17
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adc r9, r17
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sub r9, r17
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; calc Y1
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mov r10, r6
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mov r11, r7
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add r10, r17
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adc r11, r17
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sub r11, r17
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rcall ili9341BeginSpi ; (r16, r17)
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rcall ili9341SetAddressWindow ; (R16)
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ldi r16, 8 ; increment X pos for next char
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add r4, r16
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adc r5, r16
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sub r5, r16
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ldi r16, ILI9341_CMD_RAMWR ; start writing ro RAM
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rcall ili9341SendCommand
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ldi r17, 64 ; 8x8
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ili9341_WriteCharacterX1At_loop:
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ld r18, X+
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ld r19, X+
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rcall ili9341Send16BitData
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dec r17
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brne ili9341_WriteCharacterX1At_loop
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rcall ili9341EndSpi
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine ili9341_WriteCharacterX2At
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; @param R16 character to write
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; @param r5:r4 X
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; @param r7:r6 Y
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; @param r1:r0 background color
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; @param r3:r2 foreground color
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; @param Z pointer to font
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; @param X pointer to RAM to store data to
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; @clobbers r16, r17, r18, r19, r24, r25, x, z
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ili9341_WriteCharacterX2At:
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push xl
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push xh
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rcall ili9341WriteCharacterFromFont8x8x2 ; (r17, r24, r25, x, z)
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pop xh
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pop xl
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ldi r17, 15
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; calc X1
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mov r8, r4
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mov r9, r5
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add r8, r17
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adc r9, r17
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sub r9, r17
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; calc Y1
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mov r10, r6
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mov r11, r7
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add r10, r17
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adc r11, r17
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sub r11, r17
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rcall ili9341BeginSpi ; (r16, r17)
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rcall ili9341SetAddressWindow ; (R16)
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ldi r16, 16 ; increment X pos for next char
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add r4, r16
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adc r5, r16
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sub r5, r16
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ldi r16, ILI9341_CMD_RAMWR ; start writing ro RAM
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rcall ili9341SendCommand
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ldi r17, 0 ; 256 bytes
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ili9341_WriteCharacterX2At_loop:
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ld r18, X+
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ld r19, X+
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rcall ili9341Send16BitData
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dec r17
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brne ili9341_WriteCharacterX2At_loop
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rcall ili9341EndSpi
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine ili9341WriteCharacterFromFont8x8x1
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; @param R16 character to write
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; @param R1:R0 background color
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; @param R3:R2 foreground color
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; @param Z pointer to font
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; @param X pointer to RAM to store data to
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; @clobbers r17, r24, r25, x, z
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ili9341WriteCharacterFromFont8x8x1:
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rcall ili9341GetCharPosInFont8x8 ; (r17, r24, r25, z)
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ldi r25, 8 ; 8 bytes
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ili9341WriteCharacterFromFont8x8x1_loop1:
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ldi r24, 8 ; 8 bits
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lpm r17, Z+
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ili9341WriteCharacterFromFont8x8x1_loop2:
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lsr r17
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brcs ili9341WriteCharacterFromFont8x8x1_writeForeground
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st X+, r0
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st X+, r1
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rjmp ili9341WriteCharacterFromFont8x8x1_loop2end
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ili9341WriteCharacterFromFont8x8x1_writeForeground:
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st X+, r2
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st X+, r3
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ili9341WriteCharacterFromFont8x8x1_loop2end:
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dec r24
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brne ili9341WriteCharacterFromFont8x8x1_loop2
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dec r25
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brne ili9341WriteCharacterFromFont8x8x1_loop1
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine ili9341WriteCharacterFromFont8x8x2
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; @param R16 character to write
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; @param R1:R0 background color
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; @param R3:R2 foreground color
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; @param Z pointer to font
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; @param X pointer to RAM to store data to
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; @clobbers r17, r22, r23, r24, r25, x, z
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ili9341WriteCharacterFromFont8x8x2:
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rcall ili9341GetCharPosInFont8x8 ; (r17, r24, r25, z)
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ldi r25, 8 ; 8 bytes
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ili9341WriteCharacterFromFont8x8x2_loop1:
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ldi r24, 8 ; 8 bits
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lpm r17, Z+
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ili9341WriteCharacterFromFont8x8x2_loop2:
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lsr r17
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brcs ili9341WriteCharacterFromFont8x8x2_writeForeground
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mov r22, r0
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mov r23, r1
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rjmp ili9341WriteCharacterFromFont8x8x2_loop2end
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ili9341WriteCharacterFromFont8x8x2_writeForeground:
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mov r22, r2
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mov r23, r3
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ili9341WriteCharacterFromFont8x8x2_loop2end:
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st X+, r22
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st X+, r23
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st X+, r22
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st X+, r23
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adiw xh:xl, 28 ; move to next row (8*4)-4
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st X+, r22
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st X+, r23
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st X+, r22
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st X+, r23
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sbiw xh:xl, 32 ; move back to previous row
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dec r24
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brne ili9341WriteCharacterFromFont8x8x2_loop2
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adiw xh:xl, 32 ; skip next line (we already wrote it)
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dec r25
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brne ili9341WriteCharacterFromFont8x8x2_loop1
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine ili9341GetCharPosInFont8x8
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; @param R16 character to write
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; @param Z pointer to font
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; @return Z pointer to begin of char data
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; @clobbers r17, r24, r25, z
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ili9341GetCharPosInFont8x8:
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mov r24, r16
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lpm r17, Z+ ; first char num
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sub r24, r17
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brcc ili9341GetCharPosInFont8x8_firstValueOkay
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adiw zh:zl, 1 ; use first char
|
|
ret
|
|
ili9341GetCharPosInFont8x8_firstValueOkay:
|
|
lpm r17, Z+
|
|
cp r24, r17
|
|
brcs ili9341WriteCharacterFromFont8x8_gotPos
|
|
ret
|
|
ili9341WriteCharacterFromFont8x8_gotPos:
|
|
clr r25
|
|
lsl r24 ; R16x8
|
|
rol r25
|
|
lsl r24
|
|
rol r25
|
|
lsl r24
|
|
rol r25
|
|
add zl, r24
|
|
adc zh, r25
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
ili9341Test1:
|
|
rcall ili9341BeginSpi
|
|
ldi r16, 0x04
|
|
cbi ILI9341_DC_OUTPUT, ILI9341_DC_PIN ; D low (send command)
|
|
rcall SPIHW_MasterTransfer ; (R16)
|
|
sbi ILI9341_DC_OUTPUT, ILI9341_DC_PIN ; D high (send data)
|
|
clr r16
|
|
; read byte 1
|
|
rcall SPIHW_MasterTransfer ; (R16)
|
|
; read byte 2
|
|
rcall SPIHW_MasterTransfer ; (R16)
|
|
; read byte 3
|
|
rcall SPIHW_MasterTransfer ; (R16)
|
|
; read byte 4
|
|
rcall SPIHW_MasterTransfer ; (R16)
|
|
rcall ili9341EndSpi ; (R16)
|
|
ret
|
|
|
|
|
|
|
|
; @param %0 X
|
|
; @param %1 Y
|
|
; @param %2 W
|
|
; @param %3 H
|
|
.macro M_ILI9341_FILL_RECT
|
|
ldi r16, LOW(@0) ; X0
|
|
mov r4, r16
|
|
ldi r16, HIGH(@0)
|
|
mov r5, r16
|
|
|
|
ldi r16, LOW(@1) ; Y0
|
|
mov r6, r16
|
|
ldi r16, HIGH(@1)
|
|
mov r7, r16
|
|
|
|
ldi r16, LOW(@2) ; W
|
|
mov r8, r16
|
|
ldi r16, HIGH(@2)
|
|
mov r9, r16
|
|
|
|
ldi r16, LOW(@3) ; H
|
|
mov r10, r16
|
|
ldi r16, HIGH(@3)
|
|
mov r11, r16
|
|
|
|
rcall ILI9341_FillRect
|
|
.endmacro
|
|
|
|
|
|
|
|
ili9341Test2:
|
|
M_ILI9341_FILL_RECT 10, 20, 70, 100
|
|
ret
|
|
|
|
|
|
|
|
ili9341Test3:
|
|
M_ILI9341_FILL_RECT 90, 40, 70, 100
|
|
ret
|
|
|
|
|
|
|
|
ili9341Test4:
|
|
M_ILI9341_FILL_RECT 40, 30, 70, 100
|
|
ret
|
|
|
|
|
|
|
|
ili9341Test5:
|
|
M_ILI9341_FILL_RECT 0, 0, 319, 239
|
|
ret
|
|
|
|
|
|
|
|
|
|
ili9341InitCommands:
|
|
; display off
|
|
.db 0x28, 0
|
|
; PowerCtlA
|
|
.db 0xcb, 5, 0x39, 0x2C, 0x00, 0x34, 0x02, 0x00
|
|
; PowerCtlB
|
|
.db 0xcf, 3, 0x00, 0xC1, 0x30, 0x00
|
|
; DriverTimingCtlA
|
|
.db 0xe8, 3, 0x85, 0x00, 0x78, 0x00
|
|
; DriverTimingCtlB
|
|
.db 0xea, 2, 0x00, 0x00
|
|
; _PowerSeqCtl
|
|
.db 0xed, 4, 0x64, 0x03, 0x12, 0x81
|
|
; PumpRatioCtl
|
|
.db 0xf7, 1, 0x20, 0x00
|
|
; PowerCtl1
|
|
.db 0xc0, 1, 0x23, 0x00 ; lookup!
|
|
; PowerCtl2
|
|
.db 0xc1, 1, 0x10, 0x00 ; lookup!
|
|
; VomCtl1
|
|
.db 0xc5, 2, 0x3e, 0x28 ; lookup!
|
|
; VomCtl2
|
|
.db 0xc7, 1, 0x86, 0x00 ; lookup!
|
|
; ColMod
|
|
.db 0x3A, 1, 0x55, 0x00 ; DPI=16bits/pixel, DBI=16bits/pixel
|
|
; FrameRateCtl
|
|
.db 0xb1, 2, 0x00, ILI9341_FRAMERATE_79_HZ
|
|
; DspFnCtl
|
|
.db 0xb6, 3, 0x08, 0x82, 0x27, 0x00
|
|
; GammaCurve
|
|
.db 0x26, 1, 0x01, 0x00
|
|
; PosGamma
|
|
.db 0xe0, 15
|
|
.db 0x0F, 0x31, 0x2B, 0x0C, 0x0E, 0x08, 0x4E, 0xF1
|
|
.db 0x37, 0x07, 0x10, 0x03, 0x0E, 0x09, 0x00, 0x00
|
|
; NegGamma
|
|
.db 0xe1, 15
|
|
.db 0x00, 0x0E, 0x14, 0x03, 0x11, 0x07, 0x31, 0xC1
|
|
.db 0x48, 0x08, 0x0F, 0x0C, 0x31, 0x36, 0x0F, 0x00
|
|
; memory access control (use ILI9341_MADCTL_MV to flip X/Y)
|
|
; MMMMBM
|
|
; YXVLGH00
|
|
.db 0x36, 1, 0b11101000, 0x00
|
|
; normal mode on
|
|
; .db 0x13, 0
|
|
|
|
; end
|
|
.db 0xff, 0xff
|
|
|
|
|
|
helloWorld: .db "Hello World", 0
|
|
|
|
|
|
|
|
.include "modules/lcd2/ili9341/font1.asm"
|
|
|
|
|