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+ − 1 # Using OpenSTM32 IDE to Compile OSTC4 Firmware #
+ − 2
+ − 3 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.
+ − 4 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).
+ − 5
+ − 6 1. Register on http://www.openstm32.org/ : that will allows you to download the IDE.
+ − 7 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).
+ − 8 3. Use the ready made project ... in ...
+ − 9
+ − 10 Or you can create a brand new project by following the _How To_'s:
+ − 11
+ − 12 - [HowTo compile CPU1-Discovery main firmware](Detailed CPU1-Discovery Project.md)
+ − 13 - [HowTo compile CPU1-Discovery protected area firmware](Detailed CPU1-Upper Project.md)
+ − 14 - [HowTo compile CPU2-RTE real-time firmware](Detailed CPU2-RTE Project.md)
+ − 15 - [HowTo generate uploadable firmware file](Make Firmware File.md)