From 684e9d9604d487c0e828eca23bf627a3648f92bc Mon Sep 17 00:00:00 2001
From: c03rad0r <1100745+c03rad0r@users.noreply.github.com>
Date: Wed, 24 Jun 2026 22:05:56 +0530
Subject: [PATCH] fix: add configurable LR2021_IRQ_DIO=9 build flag per review
 feedback (#4)

---
 variants/nicerf_lr2021/platformio.ini | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/variants/nicerf_lr2021/platformio.ini b/variants/nicerf_lr2021/platformio.ini
index 0f02a9ab..58ed7cd6 100644
--- a/variants/nicerf_lr2021/platformio.ini
+++ b/variants/nicerf_lr2021/platformio.ini
@@ -22,6 +22,8 @@ build_flags =
   -D WRAPPER_CLASS=CustomLR2021Wrapper
   -D LORA_TX_POWER=22
   -D RADIOLIB_EXCLUDE_SX126X=1
+  ; LR2021 IRQ DIO pin (configurable — LR2021 supports any DIO pin for IRQ)
+  -D LR2021_IRQ_DIO=9
 build_src_filter = ${esp32_base.build_src_filter}
   +<../variants/nicerf_lr2021>
   +<helpers/sensors>