ST / X_NUCLEO_GNSS1A1

GPSProvider wrapper library for STMicroelectronics' X-NUCLEO-GNSS1A1 Expansion Board.

Dependents:   TeseoLocation

X_NUCLEO_GNSS1A1 Library

GPS_Provider wrapper library for STMicroelectronics' X-NUCLEO-GNSS1A1 component.

Overview

This library includes drivers for ST’s Teseo-LIV3F Global Navigation Satellite System (GNSS) device and middleware for the NMEA protocol support. This firmware package implements the port of the GPS_Provider to STMicroelectronics' X-NUCLEO-GNSS1A1 GNSS Expansion Board.

The key features of the library are:

  • Complete software to build applications using Teseo-LIV3F GNSS device
  • Middleware for the NMEA protocol support

Furthermore the library provides the following advanced features:

  • Geofencing - allows the Teseo-LIV3F receiver to raise a NMEA message when the resolved GNSS position is close to or entering or exiting from a specific circle
  • Odometer - provides information on the traveled distance using only the resolved GNSS position
  • Data Logging - allows the Teseo-LIV3F receiver to save locally on the flash the resolved GNSS position to be retrieved on demand from the Host

Hardware description

The X-NUCLEO-GNSS1A1 is a Global Navigation Satellite System Expansion Board usable with the STM32 Nucleo system and other Arduino compatible platforms. It is designed around the STMicroelectronics Teseo-LIV3F GNSS receiver IC working on multiple constellations (GPS/Galileo/Glonass/BeiDou/QZSS).

The Teseo-LIV3F module is designed for top performance in a minimal space. Within its 10x10mm compact size, Teseo-LIV3F offers superior accuracy thanks to the on board 26MHz Temperature Compensated Crystal Oscillator (TCXO) and a reduced Time To First Fix (TTFF) relying to its dedicated 32KHz Real Time Clock (RTC) oscillator.

The X-NUCLEO-GNSS1A1, hosting the Teseo-LIV3F, is compatible with Arduino UNO R3 connector layout and interfaces with the MCU via the UART channel. To connect by serial port the GNSS receiver and the host the following parameters must be used:

  • 8 data bits
  • No parity
  • 1 stop bit
  • 9600 bauds

A GPS/GLONASS/Beidou antenna, distributed along with the X-NUCLEO-GNSS1A1 Expansion Board, must be connected to the antenna connector present on the Expansion Board. For the X-NUCLEO-GNSS1A1 proper operations, the following jumper settings must be used:

  • J2 open
  • J3 closed
  • J4 closed
  • J5 open
  • J6 closed
  • J7 closed
  • J8 open
  • J9 closed
  • J10 open
  • J11 closed
  • J12 closed
  • J13 closed
  • J14 closed
  • J15 closed

Tested platforms

This firmware has been tested on STM32 NUCLEO-F401RE

Example Application

To run GNSS example applications using X-NUCLEO-GNSS1A1 Expansion Board based on mbed OS, please refer to TeseoLocation page.

Diff: Middlewares/NMEAUtils.h

Revision:
0:a77f1f1f8318
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Middlewares/NMEAUtils.h	Fri Nov 09 17:06:11 2018 +0000
@@ -0,0 +1,104 @@
+/**
+*******************************************************************************
+* @file    NMEAUtils.h
+* @author  AST / Central Lab
+* @version V1.0.0
+* @date    19-May-2017
+* @brief   NMEA utilities
+*
+*******************************************************************************
+* @attention
+*
+* <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
+*
+* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+* You may not use this file except in compliance with the License.
+* You may obtain a copy of the License at:
+*
+*        http://www.st.com/software_license_agreement_liberty_v2
+*
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+*   1. Redistributions of source code must retain the above copyright notice,
+*      this list of conditions and the following disclaimer.
+*   2. Redistributions in binary form must reproduce the above copyright notice,
+*      this list of conditions and the following disclaimer in the documentation
+*      and/or other materials provided with the distribution.
+*   3. Neither the name of STMicroelectronics nor the names of its contributors
+*      may be used to endorse or promote products derived from this software
+*      without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*
+********************************************************************************
+*/
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __NMEA_UTILS_H
+#define __NMEA_UTILS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  
+#include <stdio.h>
+#include <stdint.h>
+  
+#include "NMEAParser.h"
+  
+/** @defgroup Middlewares
+ *  @brief Contains all platform independent modules (eg. NMEA Sentence Parser, ...).
+ *  @{
+ */
+
+/** @defgroup ST
+ *  @{
+ */
+ 
+/** @defgroup LIB_NMEA
+ *  @{
+ */
+
+/** @defgroup NMEA_UTILS 
+ * @{
+ */  
+
+/** @addtogroup NMEA_UTILS_PUBLIC_FUNCTIONS
+ * @{
+ */
+void scan_utc (char* utc_str, UTC_Info* utc);
+void scan_xy  (char* xy_str, uint8_t offset,  Coords*   xyz);
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+  
+/**
+ * @}
+ */
+  
+/**
+ * @}
+ */ 
+
+/**
+ * @}
+ */
+ 
+#ifdef __cplusplus
+}
+#endif
+
+#endif