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view wiki/Modules.md @ 805:dd7ce655db26
Adds a simple countdown timer, available as a custom view in surface and dive mode.
This can be used to time safety stops, or to prebreathe a CCR (or to boil your breakfast eggs if you are so inclined). The duration of the timer is configurable from 1 second to 9:59 minutes in the System menu.
The timer is started by switching to the custom view, and remaining on it until a 10 second delay has elapsed. Once the timer has started the custom view can be changed and the timer will continue running in the background.
After the timer has run out 'Finished' will be shown for 10 seconds in the timer custom view, and then automatic switching of custom views (if configured) resumes.
In surface mode the dive computer will not go to sleep while the timer is running, and a mini timer will be shown when the timer custom view is not showing. (mikeller)
| author | heinrichsweikamp |
|---|---|
| date | Mon, 21 Aug 2023 17:20:07 +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.