Module GNSS

Example

from m5stack import *
from m5ui import *
from uiflow import *
import module

setScreenColor(0x222222)

gnss = module.get(module.GNSS)

gnss.init_gnss(1, 17, 16, 38400, 8, None, 1)
gnss.init_imu(0x68)
gnss.set_mode('normal')
while True:
  print((str('date: ') + str((gnss.gnss_date))))
  print((str('time: ') + str((gnss.gnss_time))))
  print((str('latitude: ') + str((gnss.latitude))))
  print((str('longitude: ') + str((gnss.longitude))))
  print((str('IMU ACC rawX: ') + str((gnss.get_accel(1)[0]))))
  print((str('IMU ACC rawY: ') + str((gnss.get_accel(1)[1]))))
  print((str('IMU ACC rawZ: ') + str((gnss.get_accel(1)[2]))))
  print((str('IMU GYRO rawX: ') + str((gnss.get_gyro(1)[0]))))
  print((str('IMU GYRO rawY: ') + str((gnss.get_gyro(1)[1]))))
  print((str('IMU GYRO rawZ: ') + str((gnss.get_gyro(1)[2]))))
  wait_ms(2)

API

gnss.get_accel(0)[0]

• Retrieves the accelerometer data in the specified direction (e.g., X-axis) in meters per second squared (m/s²), returning a floating-point number.

gnss.get_accel(1)[0]

• Retrieves the raw accelerometer data in the specified direction (e.g., X-axis), returning an integer value.

gnss.altitude

• Retrieves the current altitude in meters, returning a string representation of the altitude.

gnss.course

• Retrieves the course information, returning a string representation of the course. The course refers to the direction relative to the Earth's North Pole.

gnss.gnss_date

• Retrieves the current date information, returning a string representation of the date.

gnss.get_gyro(0)[0]

• Retrieves the gyroscope data in the specified direction (e.g., X-axis) in degrees per second (deg/s), returning a floating-point number.

gnss.get_gyro(1)[0]

• Retrieves the raw gyroscope data in the specified direction (e.g., X-axis), returning an integer value.

gnss.latitude

• Retrieves the latitude information, returning a string in degrees and minutes format (ddmm.mmmmm) with a W/E indicator for west or east longitude.

gnss.latitude_decimal

• Retrieves the latitude in decimal format, returning a floating-point number.

gnss.longitude

• Retrieves the longitude information, returning a string in degrees and minutes format (ddmm.mmmmm) with a S/N indicator for south or north longitude.

gnss.longitude_decimal

• Retrieves the longitude in decimal format, returning a floating-point number.

gnss.get_magneto(0)[0]

• Retrieves the magnetometer data in the specified direction (e.g., X-axis) in microteslas (μT), returning a floating-point number.

gnss.get_magneto(1)[0]

• Retrieves the raw magnetometer data in the specified direction (e.g., X-axis), returning an integer value.

gnss.pos_quality

• Retrieves positioning quality information, returning a string. This is typically used to indicate the quality or accuracy of the GNSS signal.

gnss.get_pressure

• Retrieves the current pressure value from the pressure sensor in hectopascals (hPa), returning a floating-point number.

gnss.satellite_num

• Retrieves the current number of connected satellites, returning a string.

gnss.speed_knot

• Retrieves the speed, returning a string. The speed can be represented in knots (knot) or kilometers per hour (kph).

gnss.get_temperature

• Retrieves the current temperature in degrees Celsius (°C), returning a floating-point number.

gnss.gnss_time

-

Retrieves the current time, returning a string representation of the time.

gnss.init_gnss(1, 17, 16, 38400, 8, None, 1)

• Initializes the GNSS module. Sets the UART communication parameters, including the UART port, Tx (transmit) pin, Rx (receive) pin, baud rate, data bits, parity, and stop bits.

gnss.init_imu(0x68)

• Initializes the IMU device with the I2C address set to 0x68, used for subsequent I2C communication.

gnss.set_acc_odr(0x09)

• Sets the accelerometer's output data rate. Here, 200Hz is selected, meaning the accelerometer outputs data 200 times per second.

gnss.set_acc_range(0x00)

• Sets the accelerometer's measurement range. Here, 2G is selected, meaning the accelerometer's maximum measurement range is ±2 times gravity (G).

gnss.set_mode('normal')

• Sets the BMI270 sensor to normal operating mode. The BMI270 is an IMU sensor typically used for attitude sensing and motion detection.

gnss.set_acc_odr(0x09)

• Sets the gyroscope's output data rate. Here, 200Hz is selected, meaning the gyroscope outputs data 200 times per second.

gnss.set_gyr_range(0x01)

• Sets the gyroscope's measurement range. Here, 1000 degrees per second (dps) is selected, meaning the gyroscope's maximum measurement range is ±1000 degrees per second.

gnss.set_magneto_odr(0x00)

• Sets the magnetometer's output data rate. Here, 10Hz is selected, meaning the magnetometer outputs data 10 times per second.

gnss.set_time_zone(8)

• Sets the time zone. Here, it is set to 8 hours and 0 minutes, typically used to adjust the time to match the local time zone.