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

2026-01-24 01:03:31 +01:00
parent 2085ba6bbe
commit fdfc040d19
5 changed files with 79 additions and 24 deletions
--- a/avr/modules/spi_hw/main.asm
+++ b/avr/modules/spi_hw/main.asm
@@ -8,6 +8,22 @@
 ; ***************************************************************************


+; ***************************************************************************
+; macros
+
+; @param @0 register to use
+
+.macro M_SPIHW_MASTER_SEND_BYTE
+  outr SPDR, @0 ; masterSend Byte
+  l1_%:
+    inr @0, SPSR
+    sbrs @0, SPIF
+  rjmp l1_%
+  inr @0, SPDR
+.endm
+
+
+
 ; ***************************************************************************
 ; defines