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view wiki/Modules.md @ 1027:158100a84ebd GasConsumption
New profile feature:
In the past the OSTC provide just one instance for settings. If for example a diver switched from OC to CCR configuration several settings had to be modified. To improve this and to be more flexible in adapting the OSTC to differend dive scenarions the usage of up to 4 profiles has beem introduced. The profiles are copies of the common settings but stored in a separate, previously not used, flash section => no impact to existings settings handling. For access to the profiles the existing setting flash functions are reused. To enable this a parameter war introduced which defines the target of the operation (common settings or profiles).
| author | Ideenmodellierer |
|---|---|
| date | Sun, 07 Sep 2025 19:03:44 +0200 |
| parents | 0e7c16dd774d |
| children |
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# OSTC4 Code Modules # ## Main CPU - aka CPU1-Discovery ## For historical reasons, the firmware of the main CPU was divided in three parts. It helps development, allow smalled upgrades, and improve security as a bad manipulation won't kill the bootloader, responsible fot the next firmware upgrade. ### Bootloader ## The code responsible to upload new firmwares for both CPU. ### Font Pack ### This module does not contains any code. Just font data and images. ### Firmware code ### The main OSTC4 firmware. The more important modules are: - Buehlmann decompression algorithm. - VPM decompression algorithm. - The simulator and dive planner. - Logbook display (surface and dive mode). - All user interface code, during dive or surface mode (`t*.c` files). - Graphics (gfx) engine. - Plus interface to the other CPU, the management of the _LCD_ screen, and the optional _Bonex_ scooter interface (No longer supported) ## Small CPU - aka CPU2-RTE ## The _Real Time_ CPU handle everything that requires precise timming to function perperly. The most important modules are: - Real time computation of gas exchanges during dive (aka the _LifeData_ structure). - Analog to digital conversion for the ... ambient light sensor. - I2C bus interface to the pressure sensor, the magnetic compass and the battery gauge. - SPI bus interface to the buttons and to the other CPU. - Serial interface to the _RS232-over-Wireless_ connection.