ZP GPS Driver

Owned by Hardy Yu
Last updated: 2024-12-23
1 min read

Goals

  • extract NMEA.GGA and NMEA.RMC information from the GPS data, including

    • location information

      • latitude and longitude

      • the incoming data is in the format ddmm.mmmm degrees minutes.fractional minutes

      • we want to convert it to the unit of degree only with 6 decimal places precision for the sake of simplicity and better compatibility

    • date

      • day, month, year

    • time

      • hour, minutes, seconds

    • number of satellites

    • ground speed

      • converts to m/s

    • track angle

      • this is the direction in which the vehicle is moving

      • this angle is relative to the true north

  • build a GPS driver class to provide the proper GPS configuration methods and info getters

    • The GPS module we are currently using is spark fun GPS breakout https://www.sparkfun.com/products/15210

    • It has an onboard SAM M8Q module from Ublox

    • In theory, this device should be usable with other Ublox GPS module since the GPS sentence they spill out is the same

  • using UART protocol

    • we can add the I2C interface to this driver later since UART spots are usually more precious on a MCU

  • interfaces with STM32

  • will be integrated into the ZP3.5 project

Design

@Ria Prakash

Source