5b6ab7faf3
* add blank example * add ipc example code, need to change FURI API * add ipc example code, need to change FURI API * change core API, add context * check handler at take * fix important bugs in furi * drawing example * add posix mq * fix unsigned demo counter * create at open * working local demo * russian version of IPC example * english version * add gif
27 lines
1.0 KiB
Markdown
27 lines
1.0 KiB
Markdown
In this article we create few application, interact between apps, use OS functions and interact with HAL.
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# General agreements
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Flipper application is just a function:
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```C
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void application_name(void* p) {
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// Setup
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while(1) {
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// Loop
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}
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}
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```
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1. `void* p` is arbitrary pointer that may be used for pass parameters to application at launch (like argc/argv in POSIX).
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2. Application must never attempt to return or exit from their implementing function.
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3. Avoid long cycles without any "waits" or "blocking" like `delay` or `xQueueReceive`, otherwise your app will blocking overall Flipper work.
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4. Do not create static variables inside function or global variables. Use only local variables. We plan to add virual in-RAM filesystem to save any persistent data.
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# Application examples
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* **[Blink](Blink-app)** show how to create app and control GPIO
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* **[UART write](UART-write)** operate with FURI pipe and print some messages
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* **[Inter-process communication](IPC-example)** describes how to interact between application through FURI
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