Bluetooth gps из arduino

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esp32 arduino to bluetooth gps PPS 10 Hz clock recovery

emard/esp32btgps

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README.md

ESP32 Arduino to bluetooth GPS

10 Hz PPS clock recovery from bluetooth GPS NMEA serial data. For recent 25 seconds it calculates average difference (NMEA_day_time — millis_time), resolution +-4ms. Then it phase locks 10 Hz PPS to millis+difference, for difference more than 15 ms it applies 4x larger proportional factor to lock phase, otherwise it will apply 4x smaller proportional factor to reduce PPS jitter and have some hysteresys when it is near lock.

ESP32 is bluetooth master (initiates connection) and GPS is bluetooth device providing serial port. Standard bluetooth serial is used (non-BLE).

For Garmin GLO usb-serial, firmware 2.60 should be upgraded to 3.00.

For Garmin GLO firmware 2.60: If ESP32 is rebooted, ESP32 connects to bluetooth serial but no serial traffic appears with «Garmin GLO» GPS I have tested with firmware 2.60.

The silent GPS also doesn’t provide traffic to PC when it connects. To restore traffic, GPS must be turned OFF and ON. Firmware upgrade to 3.00 fixes it.

About

esp32 arduino to bluetooth gps PPS 10 Hz clock recovery

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Wio Tracker — GPS, BT3.0, GSM, Arduino Compatible

What is Wio Tracker? Wio Tracker is an Arduino compatible development board that helps you to track any moving things on the planet. By integrating GSM&GPRS as well as GPS&BeiDou in one board, it provides an all-in-one solution for your out-door IoT project.

If you are following the latest news about Low-Power Wide-Area Network(LPWAN), you may know that 2016 is a special year because there are new technology like LoRa and Sigfox came out, which remarkably pushed the development of WAN. The Wio Tracker has similarities as LoRa and Sigfox but also quite different. It is more suitable for out-door moving tracking and situations that has high frequency customer interaction and medium volume of data, for example sharing bicycle, logistics location, pet tracking.

Comparing to traditional GPS tracking solution, Seeed’s Wio Tracker is much more easier to use and customize for the fast changing IOT market. As a user-friendly Grove development board, the look of Wio Tracker may remind you of Wio Link, another started product of Seeed. So you can also find 6 grove connector on the board. As an Arduino compatible board, users can use the Wio Tracker with Arduino IDE directly.

Why do we call the Wio Tracker a solution, because it is really not just a board. At SeeedStudio, we have the ability to help customer customize the Wio Tracker for their own project and finish the project all the way to mass production. As Wio Tracker uses standard module that is mass production, we are ready to mass production even when customer is at their prototyping stage.

We have prepared everything, the last thing we need is your creative projects, so if you are making an out-door IOT tracking project, please don’t hesitate to use the Wio Tracker!

Please always plug 3.7V Lipo battery in case USB power supply is not sufficient. 

Features​

• Multi-GNSS engine for combined GPS and BeiDou, higher precision location
• EPO™ Technology, providing predicted Extended Prediction Orbit to speed up TTFF without need of extra server
• Based on EPO™ data, QuecFastFix™ Online function further reduces TTFF in cold start, making cold start TTFF comparable to that in hot start
• GLP(GNSS Low Power) Mode, 40% power consumption for normal mode and slightly lower precision
• Period Mode, also reduce power consumption by controlling the sleep time
• Always Locate™ Technology, an intelligent algorithm for power saving
• Easy™(Embedded Assist System) Technology, self-generated orbit prediction for instant positioning fix, reducing the Time To First Fix(TTFF)
• LOCUS™ Technology, innate navigation data logger solution with no need for host and external flash
• AT Command: GSM 07.07, 07.05 and enhanced AT Command
• Bluetooth 3.0 with SPP and HFP-AG
• 6 Grove Connectors
• Nano SIM and TF card 2 in 1 socket
• Arduino IDE compatible
• Low power and small size

Quectel MC20 Module​

• Ultra compact size: 18.7 × 16.0 × 2.1mm
• Multi navigation constellation: GPS/ BeiDou/ QZSS
• GNSS receiver channels: 99 acquisition/ 33 tracking channels
• Powerful AGPS functions: Autonomous AGPS EASY™/ Offline AGPS EPO™/ Online AGPS QuecFastFix
• Built-in LNA for better GNSS sensitivity ([email protected]): able to use passive GNSS antenna without the need of any extra LNA
• Enhanced GNSS features: SDK command/ AIC/ LOCUS/ GLP
• GSM quad-band: 850/900/1800/1900MHz
• Multi internet protocols: TCP/ UDP/ PPP/ HTTP/ FTP/ SSL
• Support Voice, SMS, QuecFOTATM, DSSS, OpenCPU
• Support Bluetooth V3.0: SPP & HFP-AG profiles

Unlike most Arduino & Genuino boards, the Wio Tracker runs at 3.3V. The maximum voltage that the I/O pins can tolerate is 3.3V. Applying voltages higher than 3.3V to any I/O pin could damage the board. 

Specification​

Item	Function	Value
Microcontroller	Processor	ATSAMD21G18A-MU, ARM Cortex-M0+, 48MHz
Flash Memory	256KB
SRAM	32KB
Operating Voltage	3.3V
DC Current per I/O Pin	7 mA
Clock Speed	48 MHz
GSM/GPRS	GSM	850/900/1800/1900MHz, Class 4 (2W @850/900MHz), Class 1 (1W @1800/1900MHz)
AT Command: GSM 07.07, 07.05 and enhanced AT Command
Low Power Consumption: [email protected]=5
GPRS	GPRS Multi-slot Class 12: Down to 85.6kbps, Up to 85.6kbps
Protocol: TCP/UDP/FTP/HTTP/PPP/SSL
SMS	Peer to Peer Message, SMS broadcast, Text and PDU mode
Audio	Echo cancellation, Noise elimination
Bluetooth	Bluetooth 3.0: SPP, HFP-AG
GNSS	System	GPS L1 1575.42MHz, BeiDou B1 1561.10MHz
Precision
Technology	EASY/LOCUS/AlwaysLocate/EPO/GLP/AIC
Peripheral	Grove	2 x Grove Digital Port
2 x Analog Port
1 x UART
1 x I2C
Antenna	GSM Antenna
Bluetooth Antenna
GNSS Antenna
Others	USB: Power supply and upload program
JST 1.0 connecter for battery
3.5mm Audio Jack
GSM Power Button, Reset Button
1 x User RGB LED SK6812
Speaker Interface
Nano SIM and TF card 2 in 1 socket
Size	Length	54.7mm
Width	48.2mm
Weight

Application Ideas​

• Intelligent Transportation
• Pet Tracker
• Outdoor sports equipments
• Driving recorder
• Wearable device
• Property Security

Use Grove modules to expand your application 

There are 6 Grove connects on board. If this is your first time to hear about Grove, please put had on Grove System for more details. In brief, Groves is hundreds of sensor that in standard style, which is consist of sensors, actuators, displays as well as communication.

Hardware Overview​

If you want to use the on-board Grove connector, please use digitalWrite(12, HIGH) to open 3V3_B. Otherwise you can't provide power to Grove modules. 

Pin Map​

Pin Name	External Interrupt	PWM	Analog In	Analog Out	Function
RX	YES	YES	Grove UART
TX	YES	YES	Grove UART
D2	YES	YES	Grove Digital
D3	YES	YES	Grove Digital
D4	YES	Grove Digital
D5	YES	YES	Grove Digital
D6	YES	User LED Control
D7	YES	Power of MC20
D10	YES	YES	User LED
D11	YES	YES	Check Earphone
D12	YES	YES	Grove Power Control
D13	YES	YES	GSM Power Button
SDA	YES	Grove I2C
SCL	YES	Grove I2C
A0	YES	YES	YES	Grove Analog
A1	YES	YES	YES	Grove Analog
A2	YES	YES	YES	Grove Analog
A3	YES	YES	YES	Grove Analog
A4	YES	YES	Check battery

All pins can act as Digital Input and Output 

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