n-able compatibility with adafruit_LIS2MDL

[ellokmm]

Hello, thanks for the great library. I am currently trying to get my custom PCB (nrf52840 chip) to work with two IMU sensors, the LIS2MDL and LSM6DSOX.
I am able to initialize the sensors with their respective libraries and they read appropriately, however, when I try implementing the code with the n-able platform, the sensors won't initialize.

My configuration:
[env:nrf52840_dk]
platform = https://github.com/h2zero/platform-n-able.git#1.0.0
board = nrf52840_dk
framework = arduino
lib_deps =
h2zero/NimBLE-Arduino@^1.4.1
koendv/RTT Stream@^1.4.1
stm32duino/STM32duino LSM6DSOX@^2.3.4
adafruit/Adafruit LIS2MDL@^2.1.7
monitor_speed = 115200

It will build appropriately, but it will not initialize unless the platform is the nordicnrf52. I am not too familiar with this, so any help or guidance is appreciated, thanks!

[h2zero]

Hello, I am not familiar with these sensors, can you share some of your code? Are they using I2C or SPI?

[ellokmm]

They use I2C, this is the example code from LSM6DSOX_HelloWorld.ino that I've added at the moment:

#include "LSM6DSOXSensor.h"

// Declare LSM6DSOX sensor. Sensor address can have 2 values LSM6DSOX_I2C_ADD_L (corresponds to 0x6A I2C address) or LSM6DSOX_I2C_ADD_H (corresponds to 0x6B I2C address)
// On Adafruit lsm6dsox sensor, LSM6DSOX_I2C_ADD_L is the default address
#include "LSM6DSOXSensor.h"

// Declare LSM6DSOX sensor. Sensor address can have 2 values LSM6DSOX_I2C_ADD_L (corresponds to 0x6A I2C address) or LSM6DSOX_I2C_ADD_H (corresponds to 0x6B I2C address)
// On Adafruit lsm6dsox sensor, LSM6DSOX_I2C_ADD_L is the default address
LSM6DSOXSensor lsm6dsoxSensor = LSM6DSOXSensor(&Wire, LSM6DSOX_I2C_ADD_H);

void setup() {
  rtt.begin(115200);
  Wire.begin();

  // Default clock is 100kHz. LSM6DSOX also supports 400kHz, let's use it
  Wire.setClock(400000);

  // Init the sensor
  lsm6dsoxSensor.begin();

  // Enable accelerometer and gyroscope, and check success
  if (lsm6dsoxSensor.Enable_X() == LSM6DSOX_OK && lsm6dsoxSensor.Enable_G() == LSM6DSOX_OK) {
    rtt.println("Success enabling accelero and gyro");
  } else {
    rtt.println("Error enabling accelero and gyro");
  }

  // Read ID of device and check that it is correct
  uint8_t id;
  lsm6dsoxSensor.ReadID(&id);
  if (id != LSM6DSOX_ID) {
    rtt.println("Wrong ID for LSM6DSOX sensor. Check that device is plugged");
  } else {
    rtt.println("Receviced correct ID for LSM6DSOX sensor");
  }

  // Set accelerometer scale at +- 2G. Available values are +- 2, 4, 8, 16 G
  lsm6dsoxSensor.Set_X_FS(2);

  // Set gyroscope scale at +- 125 degres per second. Available values are +- 125, 250, 500, 1000, 2000 dps
  lsm6dsoxSensor.Set_G_FS(125);


  // Set Accelerometer sample rate to 208 Hz. Available values are +- 12.0, 26.0, 52.0, 104.0, 208.0, 416.0, 833.0, 1667.0, 3333.0, 6667.0 Hz
  lsm6dsoxSensor.Set_X_ODR(208.0f);


  // Set Gyroscope sample rate to 208 Hz. Available values are +- 12.0, 26.0, 52.0, 104.0, 208.0, 416.0, 833.0, 1667.0, 3333.0, 6667.0 Hz
  lsm6dsoxSensor.Set_G_ODR(208.0f);


}

void loop() {

  // Read accelerometer
  uint8_t acceleroStatus;
  lsm6dsoxSensor.Get_X_DRDY_Status(&acceleroStatus);
  if (acceleroStatus == 1) { // Status == 1 means a new data is available
    int32_t acceleration[3];
    lsm6dsoxSensor.Get_X_Axes(acceleration);
    // Plot data for each axis in mg
    rtt.print("AccelerationX="); rtt.print(acceleration[0]); rtt.print("mg, AccelerationY="); rtt.print(acceleration[1]); rtt.print("mg, AccelerationZ="); rtt.print(acceleration[2]); rtt.println("mg");
  }

  // Read gyroscope
  uint8_t gyroStatus;
  lsm6dsoxSensor.Get_G_DRDY_Status(&gyroStatus);
  if (gyroStatus == 1) { // Status == 1 means a new data is available
    int32_t rotation[3];
    lsm6dsoxSensor.Get_G_Axes(rotation);
    // Plot data for each axis in milli degrees per second
    rtt.print("RotationX="); rtt.print(rotation[0]); rtt.print("mdps, RotationY="); rtt.print(rotation[1]); rtt.print("mdps, RotationZ="); rtt.print(rotation[2]); rtt.println("mdps");
  }

  delay(100);

}

It will initialize fine when the platform is nordicnrf52, but changing it for some reason it will not.

[h2zero]

Thanks, do you have any other I2C devices that you can test connection to? I'm wondering if theres a pin definition error.

[ellokmm]

You were right. We fixed it by changing the pinouts of our custom PCB. Thanks!

[h2zero]

Awesome! 😎