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281 lines
No EOL
16 KiB
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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `arduboy-rust\src\library\eeprom.rs`."><title>eeprom.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceSerif4-Bold-a2c9cd1067f8b328.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../../static.files/rustdoc-cb6f1f67f1bcd037.css" id="mainThemeStyle"><meta name="rustdoc-vars" data-root-path="../../../" data-static-root-path="../../../static.files/" data-current-crate="arduboy_rust" data-themes="" data-resource-suffix="" data-rustdoc-version="1.73.0-nightly (8131b9774 2023-08-02)" data-channel="nightly" data-search-js="search-6dfdfced5eff6596.js" data-settings-js="settings-de11bff964e9d4e5.js" data-settings-css="settings-8c76f75bfb6bd192.css" data-theme-light-css="light-6d2c9675f3d09c26.css" data-theme-dark-css="dark-45ceb8f2e522f4d1.css" data-theme-ayu-css="ayu-fd19013d6ce078bf.css" ><script src="../../../static.files/storage-db41da1a38ea3cb8.js"></script><script defer src="../../../static.files/src-script-3280b574d94e47b4.js"></script><script defer src="../../../src-files.js"></script><script defer src="../../../static.files/main-0795b7d26be81095.js"></script><noscript><link rel="stylesheet" media="(prefers-color-scheme:light)" href="../../../static.files/light-6d2c9675f3d09c26.css"><link rel="stylesheet" media="(prefers-color-scheme:dark)" href="../../../static.files/dark-45ceb8f2e522f4d1.css"><link rel="stylesheet" href="../../../static.files/noscript-cffde32267a19fd6.css"></noscript><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"></nav><main><nav class="sub"><a class="sub-logo-container" href="../../../arduboy_rust/index.html"><img class="rust-logo" src="../../../static.files/rust-logo-151179464ae7ed46.svg" alt="logo"></a><form class="search-form"><span></span><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><div data-nosnippet><pre class="src-line-numbers"><a href="#1" id="1">1</a>
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</pre></div><pre class="rust"><code><span class="kw">use </span>core::ffi::{c_int, c_uchar};
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<span class="kw">pub const </span>EEPROM_STORAGE_SPACE_START: i16 = <span class="number">16</span>;
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<span class="kw">extern </span><span class="string">"C" </span>{
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<span class="attr">#[link_name = <span class="string">"arduboy_eeprom_read"</span>]
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</span><span class="kw">fn </span>arduboy_eeprom_read_raw(idx: c_int) -> c_uchar;
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<span class="attr">#[link_name = <span class="string">"arduboy_eeprom_update"</span>]
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</span><span class="kw">fn </span>arduboy_eeprom_update_raw(idx: c_int, val: c_uchar);
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<span class="attr">#[link_name = <span class="string">"arduboy_eeprom_write"</span>]
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</span><span class="kw">fn </span>arduboy_eeprom_write_raw(idx: c_int, val: c_uchar);
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<span class="attr">#[link_name = <span class="string">"arduboy_eeprom_get"</span>]
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</span><span class="kw">fn </span>arduboy_eeprom_get_raw(idx: c_int, object: <span class="kw-2">*mut </span>u8, size: usize);
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<span class="attr">#[link_name = <span class="string">"arduboy_eeprom_put"</span>]
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</span><span class="kw">fn </span>arduboy_eeprom_put_raw(idx: c_int, object: <span class="kw-2">*const </span>u8, size: usize);
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}
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<span class="doccomment">///This struct to store and read structs objects to eeprom memory.
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/// ## Example
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/// ```
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/// static e: EEPROM = EEPROM::new(10);
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/// struct Scorebord {
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/// player1: u16,
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/// text: &'static str,
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/// }
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/// static mut s: Scorebord = Scorebord {
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/// player1: 0,
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/// text: "lol\0",
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/// };
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///
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/// // init inside of the setup function
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/// e.init(&mut s);
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/// ```
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</span><span class="kw">pub struct </span>EEPROM {
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start_c1: i16,
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start_c2: i16,
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idx: i16,
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}
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<span class="kw">impl </span>EEPROM {
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<span class="kw">pub const fn </span>new(<span class="kw-2">mut </span>idx: i16) -> EEPROM {
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<span class="kw">if </span>idx > <span class="number">950 </span>{
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idx = <span class="number">0
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</span>}
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EEPROM {
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start_c1: EEPROM_STORAGE_SPACE_START + idx,
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start_c2: EEPROM_STORAGE_SPACE_START + idx + <span class="number">1</span>,
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idx: EEPROM_STORAGE_SPACE_START + idx + <span class="number">2</span>,
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}
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}
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<span class="kw">pub fn </span>init<T>(<span class="kw-2">&</span><span class="self">self</span>, your_struct: <span class="kw-2">&mut </span>T) {
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<span class="kw">let </span>c1 = <span class="self">self</span>.read(<span class="self">self</span>.start_c1);
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<span class="kw">let </span>c2 = <span class="self">self</span>.read(<span class="self">self</span>.start_c2);
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<span class="kw">if </span>c1 != <span class="string">b'Z' </span>|| c2 != <span class="string">b'D' </span>{
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<span class="self">self</span>.update(<span class="self">self</span>.start_c1, <span class="string">b'Z'</span>);
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<span class="self">self</span>.update(<span class="self">self</span>.start_c2, <span class="string">b'D'</span>);
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<span class="self">self</span>.put(your_struct);
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};
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<span class="self">self</span>.get(your_struct)
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}
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<span class="kw">fn </span>read(<span class="kw-2">&</span><span class="self">self</span>, idx: i16) -> u8 {
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<span class="kw">unsafe </span>{ arduboy_eeprom_read_raw(idx) }
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}
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<span class="kw">fn </span>update(<span class="kw-2">&</span><span class="self">self</span>, idx: i16, val: u8) {
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<span class="kw">unsafe </span>{ arduboy_eeprom_update_raw(idx, val) }
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}
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<span class="kw">pub fn </span>get<T>(<span class="kw-2">&</span><span class="self">self</span>, your_struct: <span class="kw-2">&mut </span>T) {
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<span class="kw">let </span>pointer = your_struct <span class="kw">as </span><span class="kw-2">*mut </span>T;
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<span class="kw">let </span>object_pointer = pointer <span class="kw">as </span><span class="kw-2">*mut </span>u8;
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<span class="kw">let </span>object_size = core::mem::size_of::<T>();
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<span class="kw">unsafe </span>{
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arduboy_eeprom_get_raw(<span class="self">self</span>.idx, object_pointer, object_size);
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};
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}
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<span class="kw">pub fn </span>get_direct<T>(<span class="kw-2">&</span><span class="self">self</span>) -> T {
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<span class="kw">let </span><span class="kw-2">mut </span>buffer = core::mem::MaybeUninit::<T>::uninit();
|
||
|
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<span class="kw">let </span>pointer = buffer.as_mut_ptr();
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<span class="kw">let </span>object_pointer = pointer <span class="kw">as </span><span class="kw-2">*mut </span>u8;
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<span class="kw">let </span>object_size = core::mem::size_of::<T>();
|
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|
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<span class="kw">unsafe </span>{
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arduboy_eeprom_get_raw(<span class="self">self</span>.idx, object_pointer, object_size);
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};
|
||
|
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<span class="kw">return unsafe </span>{ buffer.assume_init() };
|
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}
|
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<span class="kw">pub fn </span>put<T>(<span class="kw-2">&</span><span class="self">self</span>, your_struct: <span class="kw-2">&</span>T) {
|
||
<span class="kw">let </span>pointer = your_struct <span class="kw">as </span><span class="kw-2">*const </span>T;
|
||
<span class="kw">let </span>object_pointer = pointer <span class="kw">as </span><span class="kw-2">*const </span>u8;
|
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<span class="kw">let </span>object_size = core::mem::size_of::<T>();
|
||
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<span class="kw">unsafe </span>{
|
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arduboy_eeprom_put_raw(<span class="self">self</span>.idx, object_pointer, object_size);
|
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};
|
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}
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}
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<span class="doccomment">///Use this struct to store and read single bytes to/from eeprom memory.
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</span><span class="kw">pub struct </span>EEPROMBYTE {
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start_c1: i16,
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start_c2: i16,
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idx: i16,
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}
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<span class="kw">impl </span>EEPROMBYTE {
|
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<span class="kw">pub const fn </span>new(<span class="kw-2">mut </span>idx: i16) -> EEPROMBYTE {
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<span class="kw">if </span>idx > <span class="number">1010 </span>{
|
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idx = <span class="number">0
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</span>}
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EEPROMBYTE {
|
||
start_c1: EEPROM_STORAGE_SPACE_START + idx,
|
||
start_c2: EEPROM_STORAGE_SPACE_START + idx + <span class="number">1</span>,
|
||
idx: EEPROM_STORAGE_SPACE_START + idx + <span class="number">2</span>,
|
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}
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||
}
|
||
<span class="kw">pub fn </span>init(<span class="kw-2">&</span><span class="self">self</span>) {
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<span class="kw">let </span>c1 = <span class="self">self</span>.read_intern(<span class="self">self</span>.start_c1);
|
||
<span class="kw">let </span>c2 = <span class="self">self</span>.read_intern(<span class="self">self</span>.start_c2);
|
||
|
||
<span class="kw">if </span>c1 != <span class="string">b'Z' </span>|| c2 != <span class="string">b'D' </span>{
|
||
<span class="self">self</span>.update_intern(<span class="self">self</span>.start_c1, <span class="string">b'Z'</span>);
|
||
<span class="self">self</span>.update_intern(<span class="self">self</span>.start_c2, <span class="string">b'D'</span>);
|
||
<span class="self">self</span>.update(<span class="number">0</span>);
|
||
};
|
||
}
|
||
<span class="kw">fn </span>read_intern(<span class="kw-2">&</span><span class="self">self</span>, idx: i16) -> u8 {
|
||
<span class="kw">unsafe </span>{ arduboy_eeprom_read_raw(idx) }
|
||
}
|
||
<span class="kw">pub fn </span>read(<span class="kw-2">&</span><span class="self">self</span>) -> u8 {
|
||
<span class="kw">unsafe </span>{ arduboy_eeprom_read_raw(<span class="self">self</span>.idx) }
|
||
}
|
||
<span class="kw">fn </span>update_intern(<span class="kw-2">&</span><span class="self">self</span>, idx: i16, val: u8) {
|
||
<span class="kw">unsafe </span>{ arduboy_eeprom_update_raw(idx, val) }
|
||
}
|
||
<span class="kw">pub fn </span>update(<span class="kw-2">&</span><span class="self">self</span>, val: u8) {
|
||
<span class="kw">unsafe </span>{ arduboy_eeprom_update_raw(<span class="self">self</span>.idx, val) }
|
||
}
|
||
<span class="kw">pub fn </span>write(<span class="kw-2">&</span><span class="self">self</span>, val: u8) {
|
||
<span class="kw">unsafe </span>{ arduboy_eeprom_write_raw(<span class="self">self</span>.idx, val) }
|
||
}
|
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}
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