From 40068e3d3f54242f789d603bb0351ebe14bb7715 Mon Sep 17 00:00:00 2001
From: William Vinnicombe <william.vinnicombe@raspberrypi.com>
Date: Wed, 15 Jan 2025 15:23:02 +0000
Subject: [PATCH] Warn when using blink_simple without PICO_DEFAULT_LED_PIN

blink_simple won't do anything without PICO_DEFAULT_LED_PIN, so raise a warning similar to other examples that rely on PICO_DEFAULT_LED_PIN (eg blinky, hello_pio)
---
 blink_simple/blink_simple.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/blink_simple/blink_simple.c b/blink_simple/blink_simple.c
index 3100a4e4b..0f6ad27a6 100644
--- a/blink_simple/blink_simple.c
+++ b/blink_simple/blink_simple.c
@@ -10,6 +10,10 @@
 #define LED_DELAY_MS 250
 #endif
 
+#ifndef PICO_DEFAULT_LED_PIN
+#warning blink_simple example requires a board with a regular LED
+#endif
+
 // Initialize the GPIO for the LED
 void pico_led_init(void) {
 #ifdef PICO_DEFAULT_LED_PIN