martin/aqhomecontrol
Public Access
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

avr: use macros instead of costly calls for SPI on ILI9341.

Browse Source
This commit is contained in:
Martin Preuss
2026-01-24 01:03:31 +01:00
parent 2085ba6bbe
commit fdfc040d19
5 changed files with 79 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
avr/modules/lcd2/ili9341/images.asm
View File

@@ -179,10 +179,12 @@ ili9341ImageIdx2WritePixels_l1:
ld r17, X+
ld r16, X
; send to SPI (high byte first)
rcall SPIHW_MasterTransfer ; (R16)
mov r16, r17
rcall SPIHW_MasterTransfer ; (R16)
; rcall SPIHW_MasterTransfer ; (R16)
M_SPIHW_MASTER_SEND_BYTE r16
; mov r16, r17
; rcall SPIHW_MasterTransfer ; (R16)
M_SPIHW_MASTER_SEND_BYTE r17
dec r22 ; pixelCounterInByte
dec r20 ; runWidth
brne ili9341ImageIdx2WritePixels_horizLoop
@@ -280,10 +282,12 @@ ili9341ImageIdx2rleWritePixels_l1:
ld r17, X+
ld r16, X
; send to SPI (high byte first)
rcall SPIHW_MasterTransfer ; (R16)
mov r16, r17
rcall SPIHW_MasterTransfer ; (R16)
; rcall SPIHW_MasterTransfer ; (R16)
M_SPIHW_MASTER_SEND_BYTE r16
; mov r16, r17
; rcall SPIHW_MasterTransfer ; (R16)
M_SPIHW_MASTER_SEND_BYTE r17
dec r22 ; pixelCounterInByte
dec r20 ; runWidth
brne ili9341ImageIdx2rleWritePixels_horizLoop