annotate wiki/Modules.md @ 810:e6827fcd7604

Only jump to Sensor view during charging if sensors are connected: In the past it could happen that the charger view was replaced by the sensor view which was not displaying values because no sensors were connected => no added value in performing the switch. In the new version the automatic jump to the sensor view will only be performed if sennsors are connected.
author Ideenmodellierer
date Sun, 27 Aug 2023 20:55:57 +0200
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1 # OSTC4 Code Modules #
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2
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3 ## Main CPU - aka CPU1-Discovery ##
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4
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5 For historical reasons, the firmware of the main CPU was divided in three parts.
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6 It helps development, allow smalled upgrades, and improve security as a bad manipulation won't kill the bootloader, responsible fot the next firmware upgrade.
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7
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8 ### Bootloader ##
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9
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10 The code responsible to upload new firmwares for both CPU.
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11
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12 ### Font Pack ###
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13
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14 This module does not contains any code. Just font data and images.
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15
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16 ### Firmware code ###
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17
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18 The main OSTC4 firmware. The more important modules are:
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19
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20 - Buehlmann decompression algorithm.
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21 - VPM decompression algorithm.
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22 - The simulator and dive planner.
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23 - Logbook display (surface and dive mode).
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24 - All user interface code, during dive or surface mode (`t*.c` files).
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25 - Graphics (gfx) engine.
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26 - Plus interface to the other CPU, the management of the _LCD_ screen, and the optional _Bonex_ scooter interface (No longer supported)
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27
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28 ## Small CPU - aka CPU2-RTE ##
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29
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30 The _Real Time_ CPU handle everything that requires precise timming to function perperly.
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31
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32 The most important modules are:
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33
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34 - Real time computation of gas exchanges during dive (aka the _LifeData_ structure).
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35 - Analog to digital conversion for the ... ambient light sensor.
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36 - I2C bus interface to the pressure sensor, the magnetic compass and the battery gauge.
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37 - SPI bus interface to the buttons and to the other CPU.
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38 - Serial interface to the _RS232-over-Wireless_ connection.