From 648ccd2a9d3eb2fa2f88f2116a84b2e5ac6278b1 Mon Sep 17 00:00:00 2001
From: "Gary E. Miller" <gem@rellim.com>
Date: Fri, 15 Jun 2018 20:29:03 -0700
Subject: u-blox: repect the often ignored readonly (-b) flag.

---
 driver_ubx.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'driver_ubx.c')

diff --git a/driver_ubx.c b/driver_ubx.c
index 6f9e2396..d9791c30 100644
--- a/driver_ubx.c
+++ b/driver_ubx.c
@@ -855,6 +855,10 @@ bool ubx_write(struct gps_device_t * session,
     size_t i;
     bool ok;
 
+    /* do not write if -b (readonly) option set */
+    if (session->context->readonly)
+        return true;
+
     session->msgbuf[0] = 0xb5;
     session->msgbuf[1] = 0x62;
 
-- 
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