From df38994a4a784cc7b794c3f2a3c7f08172ef51ad Mon Sep 17 00:00:00 2001
From: xengineering <me@xengineering.eu>
Date: Sat, 1 Jun 2024 11:17:50 +0200
Subject: firmware: Assert presence of EUI-64 MAC address

Without that address comunication is not possible.
---
 firmware/src/main.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/firmware/src/main.c b/firmware/src/main.c
index 18e4564..5abd68a 100644
--- a/firmware/src/main.c
+++ b/firmware/src/main.c
@@ -5,6 +5,7 @@
 #include <zephyr/kernel.h>
 #include <zephyr/sys/util.h>
 
+#include "eui64.h"
 #include "data_link.h"
 
 #define UART_DEVICE_NODE DT_CHOSEN(zephyr_shell_uart)
@@ -13,7 +14,12 @@ static const struct device *const uart_dev = DEVICE_DT_GET(UART_DEVICE_NODE);
 int main(void)
 {
 	if (!device_is_ready(uart_dev)) {
-		printk("UART device not found!");
+		printk("UART device not found");
+		return 0;
+	}
+
+	if (!eui64_available()) {
+		printk("No EUI-64 address available");
 		return 0;
 	}
 
-- 
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