From 7fd3d76faa92dd3291228e77533859793470683f Mon Sep 17 00:00:00 2001
From: Drashna Jaelre <drashna@live.com>
Date: Sat, 25 Jun 2022 12:34:40 -0700
Subject: [PATCH] [Split] Ensure SOFT_SERIAL_PIN is defined if USE_I2C isn't
 defined (#17466)

---
 platforms/avr/drivers/serial.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/platforms/avr/drivers/serial.c b/platforms/avr/drivers/serial.c
index 6a36aa5f7f15fcb1219682a33b1890e07de1e01b..730d9b7a0123d7b24bd458e2c2f286c17e51cb85 100644
--- a/platforms/avr/drivers/serial.c
+++ b/platforms/avr/drivers/serial.c
@@ -498,6 +498,10 @@ bool soft_serial_transaction(int sstd_index) {
     sei();
     return true;
 }
+#else
+#    ifndef USE_I2C
+#        error SOFT_SERIAL_PIN or USE_I2C is required but has not been defined.
+#    endif
 #endif
 
 // Helix serial.c history