nmea_gps.hpp File Reference

Include dependency graph for nmea_gps.hpp:

API Description

• ID: nmea_gps
• Name: Generic Serial Interface for GPS NMEA Devices
• Category: gps
• Manufacturer: dfrobot seeed
• Connection: uart gpio
• Other Names: VK2828u7 ublox LEA-6H

This driver was tested with a number of GPS devices that emit NMEA data via a serial interface of some sort (typically a UART).

The I2C capablity was tested with a UBLOX LEA-6H based GPS shield from DFRobot. Currently, the I2C capability is only supported for UBLOX devices (or compatibles) that conform to the specifications outlined in the u-blox6 Receiver Description Protocol Specification, Chapter 4, DDC Port.

An example using the UART.

    // Instantiate a NMEA_GPS sensor on uart 0 at 9600 baud with enable
    // pin on D3.  If you do not need an enable pin, you can specify -1.
    upm::NMEAGPS sensor(0, 9600, 3);

    // loop, dumping NMEA data out as fast as it comes in
    while (shouldRun && sensor.dataAvailable(5000)) {
        cout << sensor.readStr(bufferLength);
    }

    if (shouldRun)
        cerr << "Timed out" << endl;

An example using I2C.

    // Instantiate a NMEA_GPS UBLOX based i2c sensor on i2c bus 0 at
    // address 0x42
    upm::NMEAGPS sensor(0, 0x42);

    // loop, dumping NMEA data out as fast as it comes in
    while (shouldRun) {
        if (sensor.dataAvailable(0))
            upm_delay_us(100);
        else
            cout << sensor.readStr(bufferLength);
    }

Go to the source code of this file.

Data Structures
struct	coord_DD
struct	satellite
struct	nmeatxt
struct	gps_fix
class	NMEAGPS

Namespaces
	upm
	C++ API wrapper for the bh1749 driver.

Enumerations
enum	gps_fix_quality {   no_fix = 0, fix_sp, fix_dp, fix_pps,   fix_rtk, fix_frtk, fix_dr, fix_manual,   fix_simulation }