annotate wiki/Detailed CPU1-Upper Project.md @ 623:ba83a8ef9bad
Improvment frame Handling:
In previous version, especially during fast menu operations, from time to time a flicker (in case of cyclic updated views) or corrupted menus appeared. Possible root cause is a interferance in the chain: refresh display (~100ms) => release frame (in parallel to) provide frame (~45ms) => clear frame (~45ms). to improve the behaviour the clear frame loop is not iterated until all bufferes are cleared (before one buffer every~45ms). getFrame() does now iterate through all frame buffers instead reusing the first possible (to avoid ghoust views and to provide more time to housekeeping function for cleanup)
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Ideenmodellierer |
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Sun, 07 Feb 2021 22:04:43 +0100 |
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5f11787b4f42 |
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1 # How to Create From Scratch a Project for _CPU1-Upper_ Code #
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3 The main CPU (aka. _CPU1 Discovery_) firmware is splitted in two parts:
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4 - The proper _CPU1 Discovery_ firmware, with the main code.
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5 - The _protected upper memory_ firmware, which is programmed during _OSTC4_ production, and contains (amongst other things) code used to upload and install firmware upgrades.
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7 ## Make a specific project ##
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9 Follow the same procedure than for [CPU1-Discovery](Detailed CPU1-Discovery Project.md), (same processor, same includes) but include the `CPU1-Upper` source directory.
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11 **
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12 NOT FINISHED YET... BE PATIENT
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13 **
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