Apple Silicon M1 and M2 Temperature Sensor

Purpose:

Create a solution to monitor the temperature sensors of Apple Silicon M1 and M2 chips, as the standard powermetrics utility is not available for Apple Silicon chips.

(Note: Command to get Apple Intel chip temperature: sudo powermetrics --samplers smc |grep -i "CPU die temperature" .)

Code Summary:

dependencies.sh:

1. Install Homebrew, Python 3, and GCC with the following:
   • bash dependencies.sh

cpu_temp_and_stress_test.py:

• This python code continuously monitors the CPU temperature (specifically the cpu die temps), simulates device under heavy CPU load, and calculates sensor readings for temperature data.

temp_sensor.m:

(from here: https:/fermion-star/apple_sensors)

This Objective-C code's purpose is to retrieve and monitor sensor values, specifically power and thermal data, from Apple devices using HID services and events.

• Retrieves and monitors power and thermal data from Apple devices using HID services and events.

• Includes functions for interacting with HID services, obtaining product names, and retrieving sensor values.

Usage:

1. Only need to execute the cpu_temp_and_stress_test.py, with the following:
   • python3 cpu_temp_and_stress_test.py
2. To stop, press CTRL + C.

• (Note: Script will automatically stop after 10 minutes)

TO-DO:

1. Break down python code to be more modular.
2. Do more research on how to have compiled executables ready to use without having to install GCC when running tests on a Apple Silicon chips.
3. Error handling, logging, and automated testing.

Resources Used:

• https:/fermion-star/apple_sensors
• https://developer.apple.com/documentation/iokit
• https://docs.python.org/3/
• https://lifehacker.com/stress-test-your-mac-with-the-yes-command-1564681908
• https:/acidanthera/VirtualSMC/blob/master/Docs/SMCSensorKeys.txt