# HG changeset patch
# User Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
# Date 1579533391 18000
# Node ID fbf26ed4884d04fdbca6be8e6f743a3bce8c8cce
# Parent  50756644a037eeaea8209af3c6c4e0615d3f4ac1
dump-sat: a utility to dump UBX-NAV-SAT messages

Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>

diff -r 50756644a037 -r fbf26ed4884d .hgignore
--- a/.hgignore	Mon Jan 20 10:16:28 2020 -0500
+++ b/.hgignore	Mon Jan 20 10:16:31 2020 -0500
@@ -12,6 +12,7 @@
 broadcast-log
 capture
 dump-ecef
+dump-sat
 dump-ubx
 print-state
 reframe
diff -r 50756644a037 -r fbf26ed4884d CMakeLists.txt
--- a/CMakeLists.txt	Mon Jan 20 10:16:28 2020 -0500
+++ b/CMakeLists.txt	Mon Jan 20 10:16:31 2020 -0500
@@ -90,6 +90,15 @@
 	ublox8
 )
 
+add_executable(dump-sat
+	dump-common.c
+	dump-sat.c
+)
+
+target_link_libraries(dump-sat
+	ublox8
+)
+
 add_executable(dump-ubx
 	dump-common.c
 	dump-ubx.c
diff -r 50756644a037 -r fbf26ed4884d dump-sat.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dump-sat.c	Mon Jan 20 10:16:31 2020 -0500
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2019-2020 Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "dump-common.h"
+
+void process_ubx_message(const struct ubx_header *header,
+			 const uint8_t *raw, size_t len,
+			 uint64_t tick)
+{
+	struct ubx_nav_sat *msg;
+	uint8_t local_raw[len];
+	int i;
+
+	if ((header->class != UBX_CLASS_NAV) || (header->id != 0x35))
+		return;
+
+	memcpy(&local_raw, raw, len);
+	msg = (struct ubx_nav_sat *) local_raw;
+
+	ASSERT3U(msg->version, ==, 1);
+
+	msg->itow  = le32_to_cpu(msg->itow);
+
+	for (i = 0; i < msg->num_svs; i++) {
+		msg->sv[i].azim = le16_to_cpu(msg->sv[i].azim);
+		msg->sv[i].prres = le16_to_cpu(msg->sv[i].prres);
+		msg->sv[i].flags = le32_to_cpu(msg->sv[i].flags);
+
+		printf("{\"msg\":\"UBX-NAV-SAT\",\"itow\":%.3f,"
+		       "\"gnss\":%u,\"sv\":%u,"
+		       "\"cno\":%u,\"az\":%d,\"el\":%d}\n",
+		       msg->itow / 1000.,
+		       msg->sv[i].gnssid, msg->sv[i].svid,
+		       msg->sv[i].cno,
+		       (int16_t) msg->sv[i].azim,
+		       (int8_t) msg->sv[i].elev);
+	}
+}