From 048eccf4c68d2677b5a6b09948b37cc4d82098ab Mon Sep 17 00:00:00 2001
From: Martin Preuss <martin@aquamaniac.de>
Date: Thu, 1 May 2025 00:58:32 +0200
Subject: [PATCH] avr: toggle LED while waiting for ATTN line.

---
 avr/modules/flash/io_attn.asm | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/avr/modules/flash/io_attn.asm b/avr/modules/flash/io_attn.asm
index 5454b19..1332ff6 100644
--- a/avr/modules/flash/io_attn.asm
+++ b/avr/modules/flash/io_attn.asm
@@ -26,6 +26,9 @@ ioWaitForAttnState100ms:
   cbi COM_ATTN_DDR, COM_ATTN_PIN          ; set ATTN port as input
   cbi COM_ATTN_OUTPUT, COM_ATTN_PIN       ; disable internal pullup for ATTN
 ioWaitForAttnState100ms_loop:
+#ifdef LED_SIMPLE_PINNUM
+    sbi LED_SIMPLE_PORTIN, LED_SIMPLE_PINNUM  ; toggle LED
+#endif
     push r17
       ldi r17, 100
       rcall ioWaitForAttnStateMilliSeconds          ; (R22, R24)