u-blox / gnss

This class provides an API to communicate with a u-blox GNSS chip. The files here were originally part of the C027_Support library (https://developer.mbed.org/teams/ublox/code/C027_Support/ at revision 138:dafbbf31bf76) but have been separated out, primarily for use on the u-blox C030 board where the cellular interace portion of the C027_Support library will instead be provided through the new mbed Cellular API.

Dependents:   example-ublox-at-cellular-interface-ext example-low-power-sleep example-C030-out-of-box-demo example-C030-out-of-box-demo ... more

Files at this revision

API Documentation at this revision

Revision 21:f91c0334d017, committed 2018-10-08

Comitter:
fahim.alavi@u-blox.com
Date:
Mon Oct 08 14:22:33 2018 +0500
Parent:
20:bc678f383db1
Child:
22:d8cd4cf0fcc0
Commit message:
NAV-Status message supported

Changed in this revision

gnss.cpp Show annotated file Show diff for this revision Revisions of this file
gnss.h Show annotated file Show diff for this revision Revisions of this file
gnss_operations.cpp Show annotated file Show diff for this revision Revisions of this file
gnss_operations.h Show annotated file Show diff for this revision Revisions of this file 
--- a/gnss.cpp	Fri Oct 05 18:46:48 2018 +0500
+++ b/gnss.cpp	Mon Oct 08 14:22:33 2018 +0500
@@ -330,6 +330,10 @@
 				return_value = UBX_NAV_ODO;
 			}
 			break;
+			case 0x03: {
+				return_value = NAV_STATUS;
+			}
+			break;
 			default:
 			{
 				return_value = UNKNOWN_UBX;
@@ -519,6 +523,37 @@
 	return return_decoded_msg;
 }
 
+tUBX_NAV_STATUS GnssParser::decode_ubx_nav_status_msg(char *buf) {
+
+	tUBX_NAV_STATUS return_decoded_msg;
+	uint8_t index = UBX_PAYLOAD_INDEX;
+
+	return_decoded_msg.itow = buf[index++];
+	return_decoded_msg.itow |= (buf[index++] << 8);
+	return_decoded_msg.itow |= (buf[index++] << 16);
+	return_decoded_msg.itow |= (buf[index++] << 24);
+
+	// move index flag
+	return_decoded_msg.fix = buf[index++];
+
+	return_decoded_msg.flags = buf[index++];
+
+	// move to ttff
+	index+=2;
+
+	return_decoded_msg.ttff = buf[index++];
+	return_decoded_msg.ttff |= (buf[index++] << 8);
+	return_decoded_msg.ttff |= (buf[index++] << 16);
+	return_decoded_msg.ttff |= (buf[index++] << 24);
+
+	return_decoded_msg.msss = buf[index++];
+	return_decoded_msg.msss |= (buf[index++] << 8);
+	return_decoded_msg.msss |= (buf[index++] << 16);
+	return_decoded_msg.msss |= (buf[index++] << 24);
+
+	return return_decoded_msg;
+}
+
 int GnssParser::ubx_request_batched_data(bool sendMonFirst) {
 	unsigned char ubx_log_retrieve_batch[]={0x00, 0x00, 0x00, 0x00};
 

--- a/gnss.h	Fri Oct 05 18:46:48 2018 +0500
+++ b/gnss.h	Mon Oct 08 14:22:33 2018 +0500
@@ -50,7 +50,7 @@
 
 enum eUBX_MSG_CLASS {NAV = 0x01, ACK = 0x05, LOG = 0x21};
 
-enum eUBX_MESSAGE  {UBX_LOG_BATCH, UBX_ACK_ACK, UBX_ACK_NAK, UBX_NAV_ODO, UBX_NAV_PVT, UNKNOWN_UBX};
+enum eUBX_MESSAGE  {UBX_LOG_BATCH, UBX_ACK_ACK, UBX_ACK_NAK, UBX_NAV_ODO, UBX_NAV_PVT, NAV_STATUS, UNKNOWN_UBX};
 
 typedef struct UBX_ACK_ACK {
 	uint8_t msg_class;
@@ -101,6 +101,15 @@
 
 }tUBX_CFG_BATCH;
 
+typedef struct UBX_NAV_STATUS{
+	uint32_t itow;
+	uint8_t fix;
+	uint8_t flags;
+	uint32_t ttff;
+	uint32_t msss;
+
+}tUBX_NAV_STATUS;
+
 /** Basic GNSS parser class.
 */
 class GnssParser
@@ -257,6 +266,12 @@
 	 */
     tUBX_LOG_BATCH decode_ubx_log_batch_msg(char *);
 
+    /** Method to parse contents of UBX_NAV_STATUS and return decoded msg
+	 * @param buff the UXB message
+	 * @return tUBX_NAV_STATUS
+	 */
+    tUBX_NAV_STATUS decode_ubx_nav_status_msg(char *);
+
     /** Method to send UBX LOG-RETRIEVEBATCH msg. This message is used to request batched data.
 	 * @param bool
 	 * @return int

--- a/gnss_operations.cpp	Fri Oct 05 18:46:48 2018 +0500
+++ b/gnss_operations.cpp	Mon Oct 08 14:22:33 2018 +0500
@@ -47,6 +47,33 @@
 	return (conf == 0) ? 0 : 1;
 }
 
+int GnssOperations::enable_ubx_nav_status() {
+	int conf = RETRY;
+	unsigned char enable_ubx_nav_status[]={0x01, 0x03, 0x01};
+	conf = RETRY;
+	int length =0;
+
+	while(conf)
+	{
+
+		length = GnssSerial::sendUbx(0x06, 0x01, enable_ubx_nav_status, sizeof(enable_ubx_nav_status));
+		if(length >= (int)(sizeof(enable_ubx_nav_status) + UBX_FRAME_SIZE))
+		{
+			SEND_LOGGING_MESSAGE("UBX-NAV-STATUS was enabled\r\n");
+			wait(1);
+			break;
+		}
+		else
+		{
+			SEND_LOGGING_MESSAGE("enabling UBX-NAV-STATUS...\r\n");
+			conf = conf - 1;
+		}
+	}
+
+	return (conf == 0) ? 0 : 1;
+
+}
+
 /**
  *
  * Disable UBX-NAV-PVT

--- a/gnss_operations.h	Fri Oct 05 18:46:48 2018 +0500
+++ b/gnss_operations.h	Mon Oct 08 14:22:33 2018 +0500
@@ -49,6 +49,7 @@
 public:
 
 	int enable_ubx_nav_pvt();
+	int enable_ubx_nav_status();
 	int disable_ubx_nav_pvt();
 	int enable_ubx_nav5(unsigned int acc);
 	int enable_ubx_odo();