From dfbcbe750650147eec88e16f50c6942bf8d6fbd9 Mon Sep 17 00:00:00 2001
From: Tobias Mueller <tobias@srlabs.de>
Date: Wed, 18 Oct 2023 20:57:19 +0200
Subject: [PATCH] functions: Provide a method to read the SIM ID

We can use the identifier of the SIM as a stable token to derive a
deterministic IMEI rather than the IMSI which is only available once the
SIM has been (PIN) unlocked.
---
 files/lib/blue-merle/functions.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/files/lib/blue-merle/functions.sh b/files/lib/blue-merle/functions.sh
index f1ed421..1514478 100644
--- a/files/lib/blue-merle/functions.sh
+++ b/files/lib/blue-merle/functions.sh
@@ -28,6 +28,11 @@ RANDOMIZE_MACADDR () {
     # You need to restart the network, i.e. /etc/init.d/network restart
 }
 
+READ_ICCID() {
+    gl_modem AT AT+CCID
+}
+
+
 READ_IMEI () {
 	local answer=1
 	while [[ "$answer" -eq 1 ]]; do