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Arduino Quick Start

2. Devices & Examples

6. Applications

Arduino Nesso N1 IMU

Arduino Nesso N1 IMU-related API and example program.

Example Program

Compilation Requirements

  • M5Stack board manager version >= 3.2.5
  • Board option = ArduinoNessoN1
  • M5GFX library version >= 0.2.17
  • M5Unified library version >= 0.2.11
cpp
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#include "M5Unified.h"

void setup() {
  auto cfg = M5.config();
  M5.begin(cfg);
  M5.Display.setRotation(1);
  M5.Display.setTextColor(GREEN);
  M5.Display.setTextDatum(middle_center);
  M5.Display.setFont(&fonts::FreeSansBold9pt7b);
  M5.Display.setTextSize(1);
}

void loop(void) {
  auto imu_update = M5.Imu.update();
  if (imu_update) {
    M5.Display.setCursor(0, 40);
    M5.Display.clear();  // Delay 100ms

    auto data = M5.Imu.getImuData();

    // The data obtained by getImuData can be used as follows.
    // data.accel.x;      // accel x-axis value.
    // data.accel.y;      // accel y-axis value.
    // data.accel.z;      // accel z-axis value.
    // data.accel.value;  // accel 3values array [0]=x / [1]=y / [2]=z.

    // data.gyro.x;      // gyro x-axis value.
    // data.gyro.y;      // gyro y-axis value.
    // data.gyro.z;      // gyro z-axis value.
    // data.gyro.value;  // gyro 3values array [0]=x / [1]=y / [2]=z.

    // data.value;  // all sensor 9values array [0~2]=accel / [3~5]=gyro /
    //              // [6~8]=mag

    Serial.printf("ax:%f  ay:%f  az:%f\r\n", data.accel.x, data.accel.y,
                  data.accel.z);
    Serial.printf("gx:%f  gy:%f  gz:%f\r\n", data.gyro.x, data.gyro.y,
                  data.gyro.z);

    M5.Display.printf("IMU:\r\n");
    M5.Display.printf("ax:%0.2f ay:%0.2f az:%0.2f\r\n", data.accel.x,
                      data.accel.y, data.accel.z);
    M5.Display.printf("gx:%0.2f gy:%0.2f gz:%0.2f\r\n", data.gyro.x,
                      data.gyro.y, data.gyro.z);
  }
  delay(100);
}

API

The IMU driver of Arduino Nesso N1 uses the IMU_Class in the M5Unified library. For more IMU-related APIs, please refer to the following document:

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