SPMOD - Weather

Overview

SPMOD - Weather (Weather station module), Integrated Magnetic sensor (QMC7983) and Humidity sensor (BME280)

SPMOD - Weather Introduction

• Using Sipeed-SPMOD interface(2.54mm * 8PIN ),unified MaixPy board interface
• Connect to the board through the SP-MOD I2C interface
• Magnetic sensor: QMC7983 is a 3-axis single chip magnetic sensor integrated with AMR and ASIC,

I2C interface with standard mode and rapid mode,Stable sensitivity in a large operating temperature range,
low power consumption (75uA).

• Sensitivity: ±30 Gauss
• Humidity sensor: BME280 is a humidity sensor that can measure relative humidity, barometric pressure and ambient temperature
• Size:25.0*10*2.9mm

Sensor Introduction:

SPMOD_Weather pin description :

Mode of connection:

Usage

• Process
  1. Send AT instruction
  2. Receive the reply
  3. Determines whether the setup was successful

C:

  fpioa_set_function(Weather_SCL, FUNC_I2C0_SCLK + Weather_I2C_DEVICE * 2); // Weather_SCL: 6;
  fpioa_set_function(Weather_SDA, FUNC_I2C0_SDA + Weather_I2C_DEVICE * 2); // Weather_SDA: 7;

  maix_i2c_init(Weather_I2C_DEVICE, 7, 400000); // Weather_I2C_DEVICE: 0;

  rslt = qmc_init(); // Magnetic sensor QMC7983 init
  rslt = bme280_init(&dev); // Temperature, humidity and pressure sensors BME280 init
  stream_sensor_data_normal_mode(&dev); // read and print sensor data

MaixPy:

  i2c_bus = I2C(I2C.I2C0, freq=100*1000, scl=6, sda=7) # scl: io_6, sda: io_7

  weather=SPWeather(i2c=i2c_bus) # create sp_weather
  while 1:
      time.sleep_ms(500)
      print(weather.qmc_read_xyz) # QMC7983 read data
      print(weather.bme_values) # BME280 read data

Runtime environments:

Result

• C

  

• MaixPy

  

Outlook

• SPMOD_Weather Size drawing:

Resource Link