view wiki/Using OpenSTM32.md @ 1063:a3f42192da0f Icon_Integration

Always use polling mode for CO2 operation: In the previous version the CO2 sensor was operated in streaming mode (2 measurements a second) in case it was used stand alone (without multiplexer). This added some complexity to the implementation (setup, error handling etc). To reduce this the sensor will now always be operated in polling mode like it is done for multiplexer operation. To make sure that the correct mode is set a command has been added to the configuration steps.
author Ideenmodellierer
date Wed, 11 Feb 2026 18:35:44 +0100
parents 0e7c16dd774d
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# Using OpenSTM32 IDE to Compile OSTC4 Firmware #

The free and Open [STM32 IDE](http://www.openstm32.org/System%2BWorkbench%2Bfor%2BSTM32) is an integrated development environment based on _Eclipse_ that will allows you to compile and link code for the OSTC4 dive computer.
You will then be able to generate `.bin` firmware files to upload to your computer using your favourite tools, eg. [OSTC Companion](https://ostc-planner.net/companion). 

1. Register on http://www.openstm32.org/ : that will allows you to download the IDE.
2. Once registered and logged in, you can go to _Documentation_ and _Installation Manual_. Follow the instructions to install the IDE (available for Windows 7, MacOS and Linux).
3. Use the ready made project ... in ... 

Or you can create a brand new project by following the _How To_'s:

- [HowTo compile CPU1-Discovery main firmware](Detailed CPU1-Discovery Project.md)
- [HowTo compile CPU1-Discovery protected area firmware](Detailed CPU1-Upper Project.md)
- [HowTo compile CPU2-RTE real-time firmware](Detailed CPU2-RTE Project.md)
- [HowTo generate uploadable firmware file](Make Firmware File.md)