Hello, I just flashed it and it works. Thankx :-)
Do you use a software sigma-delta-DAC or the internal 8 Bit DAC?
Probably you can add a second example which shows a little bit of the sound qualities of the lib.

@moelski 在 M5 Fire and the IMU 中说：

Why is there a MPU6050+MAG3110 combination build in the fire where the gray one has a MPU-9250 ?

Hmm, good question. I had also no information about the schematic when I made this example. I just tried to gather this information from the internet.

There is the original example for many M5Stack types and I just tried it and it worked.
https://github.com/m5stack/M5Stack/blob/master/examples/Modules/MPU9250/MPU9250BasicAHRS/MPU9250BasicAHRS.ino
But because I found it to bloated to work as an example I reduced it to the one you found.

There was no feedback from anyone yet if it works or not. On my M5Stack it works.

If you want, you can try many more examples in my repo:
https://github.com/ChrisMicro/M5Stack/tree/master/examples/Fire
and give me feedback.

The I2C scanner example shows two I2C devices at address 68 and 75.
There is no device at address 0x0e which would be the magnetometer. So I assume the magnetometer is build in the IMU and than it should be a MPU9250.
At least in my M5Stack Fire. But probably the changed the schematic.

Thanks.
The schematic for the M5Stack Fire seems to be wrong at the moment ( it's named M5Stack CAM ?? ).
I didn't find any information about the build in peripheral connections like Microphone and LED strip.

Hi Lukas,
thanks for your quick response. I just created a pull request.
Are you the legendary ChrisMicro behind the 8bit mixtape?
Legendary ... Uhhh ... I never heard that so far .... but thanks ....

Here I made some examples for the M5Stack Fire:

https://github.com/ChrisMicro/M5Stack/tree/master/examples/Fire

I couldn't find a schematic for the M5Stack Fire so I had to find out the peripheral pins myself.

Following the Arduino examples design rules I implemented the examples as simple as possible.
This is useful for using them as templates for own projects.