{"id":6014,"date":"2022-12-19T13:15:42","date_gmt":"2022-12-19T04:15:42","guid":{"rendered":"https:\/\/solid.kmckk.com\/SOLID\/?p=6014"},"modified":"2022-12-28T08:26:06","modified_gmt":"2022-12-27T23:26:06","slug":"solid%e4%bd%bf%e3%81%a3%e3%81%a6%e3%81%bf%e3%82%88%e3%81%86%e3%82%b7%e3%83%aa%e3%83%bc%e3%82%ba3-%e3%80%8c%e3%82%b3%e3%83%bc%e3%83%89%e3%82%ab%e3%83%90%e3%83%ac%e3%83%83%e3%82%b8%e3%80%8d-2-5-2-2-2-2","status":"publish","type":"post","link":"https:\/\/solid.kmckk.com\/SOLID\/archives\/6014","title":{"rendered":"SOLID for Raspberry Pi 4 (\u9023\u8f099)"},"content":{"rendered":"
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(2022\/12\/19)<\/p>\n<\/div>\n<\/div>\n<\/div>\n

\n
\n

Rust\u306e\u6587\u6cd5\u306b\u3064\u3044\u3066<\/h3>\n
\n

\u524d\u56de\u307e\u3067\u3067\u3001Rust\u3067\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u3057\u3001\u30af\u30ec\u30fc\u30c8\u3082\u4f5c\u6210\u3057\u3001\u4e00\u901a\u308aRust\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u66f8\u3051\u308b\u3088\u3046\u306a\u96f0\u56f2\u6c17\u306b\u306a\u3063\u3066\u304d\u307e\u3057\u305f\u3002
\n\u3067\u3082\u672c\u5f53\u306b\u305d\u3046\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n

\u4eca\u307e\u3067\u4f7f\u3063\u3066\u304d\u305f\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3001\u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u629c\u7c8b\u3067\u3059\u3002
\n\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u4e00\u884c\u4e00\u884c\u3001\u7d30\u304b\u304f\u898b\u3066\u306f\u3044\u307e\u305b\u3093\u3002
\n\u306a\u3093\u3068\u306a\u304f\u52d5\u304d\u306f\u308f\u304b\u308b\u3051\u3069\u3001\u3001\u3001\u3058\u3083\u3041\u898b\u305a\u306b\u66f8\u3044\u3066\u307f\u306a\u3088\u3001\u3068\u8a00\u308f\u308c\u305f\u3089\u3061\u3087\u3063\u3068\u6ce3\u304d\u305d\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u3067\u306f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n

\n
\n

\uff11\uff0e \u898b\u3066\u3044\u304f\u5bfe\u8c61\u306e\u30d7\u30ed\u30b0\u30e9\u30e0<\/h3>\n
\n

\u4eca\u307e\u3067\u3055\u3093\u3056\u3093\u30b5\u30f3\u30d7\u30eb\u3068\u3057\u3066\u4f7f\u308f\u305b\u3066\u3082\u3089\u3063\u305f\u3001\u4ee5\u4e0b\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n

\n
\nuse itron::{task::delay, time::duration};\n\u00a0\n#[no_mangle]\npub extern \"C\" fn slo_main() {\n   println!(\"Starting LED blinker\");\n\u00a0\n   \/\/ Configure the LED port\n   green_led::init();\n\u00a0\n   loop {\n      \/\/ Turn on the LED\n      green_led::update(true);\n      delay(duration!(ms: 200)).unwrap();\n\u00a0\n      \/\/ Turn off the LED\n      green_led::update(false);\n      delay(duration!(ms: 200)).unwrap();\n   }\n}\n\u00a0\nmod green_led {\n   use bcm2711_pac::gpio;\n   use tock_registers::interfaces::{ReadWriteable, Writeable};\n\u00a0\n   const GPIO_NUM: usize = 42;\n\u00a0\n   fn gpio_regs() -> &'static gpio::Registers {\n   \/\/ Safety: SOLID for RaPi4B provides an identity mapping in this area, and we don't alter\n   \/\/ the mapping\n      unsafe { &*(gpio::BASE.to_arm_pa().unwrap() as usize as *const gpio::Registers) }\n   }\n\u00a0\n   pub fn init() {\n   \/\/ Configure the GPIO pin for output\n      gpio_regs().gpfsel[GPIO_NUM \/ gpio::GPFSEL::PINS_PER_REGISTER].modify(\n         gpio::GPFSEL::pin(GPIO_NUM % gpio::GPFSEL::PINS_PER_REGISTER).val(gpio::GPFSEL::OUTPUT),\n      );\n   }\n\u00a0\n   pub fn update(new_state: bool) {\n      if new_state {\n         gpio_regs().gpset[GPIO_NUM \/ gpio::GPSET::PINS_PER_REGISTER]\n            .write(gpio::GPSET::set(GPIO_NUM % gpio::GPSET::PINS_PER_REGISTER));\n      } else {\n         gpio_regs().gpclr[GPIO_NUM \/ gpio::GPCLR::PINS_PER_REGISTER].write(gpio::GPCLR::clear(\n            GPIO_NUM % gpio::GPCLR::PINS_PER_REGISTER,\n         ));\n      }\n   }\n}\n<\/code><\/pre>\n<\/div>\n
1.1 use<\/h3>\n
1\u884c\u76ee\uff1a
\nuse itron::{task::delay, time::duration};<\/p>\n
itron\u30af\u30ec\u30fc\u30c8\u306etask::delay\u95a2\u6570\u3068time::duration\u30de\u30af\u30ed\u3092\u547c\u3073\u51fa\u3057\u3066\u4f7f\u3044\u305f\u3044\u306e\u3067\u3001\u3053\u308c\u3089\u3092use\u3092\u4f7f\u7528\u3057\u3066\u30b9\u30b3\u30fc\u30d7\u5185\u306b\u30a4\u30f3\u30dd\u30fc\u30c8\u3059\u308b\u3001\u3068\u3044\u3046\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n
22,23\u884c\u76ee\uff1a
\nuse bcm2711_pac::gpio;
\nuse tock_registers::interfaces::{ReadWriteable, Writeable};<\/p>\n
\u3053\u308c\u3089\u3082green_led\u30e2\u30b8\u30e5\u30fc\u30eb\u304b\u3089gpio\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u3046\u6307\u5b9a\u3067\u3059\u3002<\/p>\n
use\u3092\u4f7f\u308f\u306a\u304f\u3066\u3082\u3001\u4f8b\u3048\u3070\u3001
\n&’static gpio::Registers\u306e\u3068\u3053\u308d\u3092
\n&’static bcm2711_pac::gpio::Registers\u3000\u3068\u3059\u308c\u3070\u5927\u4e08\u592b\u3067\u3059\u3002\u3067\u3059\u304c\u8a18\u8ff0\u304c\u9577\u304f\u306a\u308a\u307e\u3059\u306d\u3002<\/p>\n
1.2 \uff15,13,17\u884c\u76ee \u30de\u30af\u30ed<\/h3>\n
println!\u3084duration!\u306e\u3088\u3046\u306b\u3001\u300c!\u300d\u304c\u4ed8\u3044\u3066\u3044\u308b\u3082\u306e\u306f\u30de\u30af\u30ed\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n
1.3 fn, mod<\/h3>\n
fn\u306f\u95a2\u6570\u3001mod\u306f\u305d\u308c\u3089\u3092\u4e00\u3064\u306e\u675f\u306b\u3057\u305f\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u5ba3\u8a00\u3067\u3059\u3002<\/p>\n
 <\/p>\n
\u3053\u3053\u307e\u3067\u306f\u76f4\u611f\u7684\u306b\u5927\u4e08\u592b\u3067\u3059\u306d\u3002<\/p>\n
\u554f\u984c\u306f\u6b21\u3067\u3059\u3002<\/p>\n
 <\/p>\n
1.4 \u623b\u308a\u5024\u306e\u3042\u308b\u95a2\u6570\u3001\u623b\u308a\u306e\u578b\u306e\u5b9a\u7fa9<\/h3>\n
fn gpio_regs() -> &’static gpio::Registers {
\nunsafe { &*(gpio::BASE.to_arm_pa().unwrap() as usize as *const gpio::Registers) }
\n}<\/p>\n
gpio_regs()\u306f\u623b\u308a\u5024\u306e\u3042\u308b\u95a2\u6570\u3067\u3001-> \uff08\u53f3\u77e2\u5370\uff09\u306f\u623b\u308a\u5024\u306e\u578b\u3092\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002
\n\u300c&’static gpio::Registers\u300d\u578b\u306e\u623b\u308a\u5024\u304c\u3042\u308b\u3068\u3044\u3046\u4e8b\u3067\u3059\u3002<\/p>\n
\u3053\u3053\u3067\u3001\u300c&’static gpio::Registers\u300d\u578b\u3001\u3068\u306f\u3069\u3046\u3044\u3046\u610f\u5473\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n
\uff06\u3092\u3064\u3051\u308b\u3053\u3068\u306f\u3001\u300c\u53c2\u7167\u300d\u3092\u610f\u5473\u3057\u307e\u3057\u305f\u3002
\n\u3058\u3083\u3001\u305d\u306e\u6b21\u306b\u3064\u3044\u3066\u3044\u308b\u30a2\u30dd\u30b9\u30c8\u30ed\u30d5\u30a3\u30fc\u306f\uff1f<\/p>\n
Rust\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u63a2\u3057\u307e\u3057\u305f\u3002
\nhttps:\/\/doc.rust-lang.org\/nomicon\/lifetimes.html<\/p>\n
\u300cLifetimes are denoted with an apostrophe: ‘a, ‘static.\u300d
\n\u3068\u66f8\u304b\u308c\u3066\u3042\u308a\u307e\u3059\u3002
\n\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u3092\u793a\u3059\u3082\u306e\u3060\u305d\u3046\u3067\u3059\u3002<\/p>\n
\u3067\uff1f\u305d\u308c\u306bstatic\u304c\u4ed8\u3044\u305f\u3089\u3069\u3046\u306a\u308b\u306e\u3067\u3057\u3087\u3046\u3002
\nstatic\u306a\u306e\u3067\u3001\u3082\u3057\u304b\u3057\u3066\u305a\u3063\u3068\u751f\u304d\u3066\u3044\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n
\u3053\u3061\u3089\u3082Rust\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n
https:\/\/doc.rust-jp.rs\/book-ja\/ch10-03-lifetime-syntax.html#%E9%9D%99%E7%9A%84%E3%83%A9%E3%82%A4%E3%83%95%E3%82%BF%E3%82%A4%E3%83%A0<\/a><\/p>\n
\u300c\u8b70\u8ad6\u3059\u308b\u5fc5\u8981\u306e\u3042\u308b1\u7a2e\u306e\u7279\u6b8a\u306a\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u304c\u3001’static\u3067\u3042\u308a\u3001\u3053\u308c\u306f\u3001\u3053\u306e\u53c2\u7167\u304c\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5168\u671f\u9593\u751f\u5b58\u3067\u304d\u308b\u4e8b\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u300d<\/p>\n
\u3084\u3063\u3068\u308f\u304b\u308a\u307e\u3057\u305f\uff01
\ngpio_regs()\u304c\u8fd4\u3059\u53c2\u7167\u304c\u3001\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5168\u671f\u9593\u751f\u5b58\u3067\u304d\u308b\u3001\u3068\u3044\u3046\u4e8b\u3067\u3059\u306d\u3002<\/p>\n
\u3053\u308c\u3067gpio_regs()\u306e\u623b\u308a\u5024\u306e\u578b\u3068\u305d\u306e\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002
\n\u3067\u306f\u3001\u3053\u306e\u53c2\u7167\u5148\u306f\u3069\u3053\u3067\u3057\u3087\u3046\u304b\u3002return\u6587\u304c\u3042\u308a\u307e\u305b\u3093\u3088\u306d\uff1f<\/p>\n
Rust\u3067\u306f\u3001return\u6587\u304c\u306a\u304f\u3066\u3082\u3001\u6700\u5f8c\u306e\u5f0f\u306e\u5024\u304c\u623b\u308a\u5024\u306b\u306a\u308a\u307e\u3059\u3002
\n\u3059\u306a\u308f\u3061\u3001\u305d\u306e\u3001\uff08\u4eca\u307e\u3067\u89e6\u308c\u306a\u3044\u3088\u3046\u306b\u907f\u3051\u3066\u304d\u305f\uff09unsafe\u3067\u56f2\u308f\u308c\u3066\u3044\u308b\u90e8\u5206\u3067\u3059\u3002<\/p>\n
1.5 unsafe\u30d6\u30ed\u30c3\u30af\u518d\u3073<\/h3>\n
\u306a\u305c\u3053\u3053\u3067unsafe\u30d6\u30ed\u30c3\u30af\u304c\u51fa\u3066\u304d\u3066\u3001\u4e00\u4f53\u3053\u3053\u306f\u4f55\u3092\u3057\u3066\u3044\u308b\u306e\u304b\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n
unsafe { &*(gpio::BASE.to_arm_pa().unwrap() as usize as *const gpio::Registers) }<\/p>\n
unsafe\u30d6\u30ed\u30c3\u30af\u306e\u5148\u982d\u3067\uff06*\u3068\u3044\u3046\u64cd\u4f5c\u3092\u3057\u3066\u3044\u307e\u3059\u3002
\n\u3053\u308c\u306f\u201d*\u201d\u306b\u3088\u3063\u3066\uff08\uff09\u306e\u4e2d\u8eab\u306e\u751f\u30dd\u30a4\u30f3\u30bf\u3092\u4e00\u65e6\u53c2\u7167\u89e3\u9664\u3057\u53c2\u7167\u5148\u306e\u5834\u6240\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n
\uff08\uff09\u306e\u4e2d\u8eab\uff1a
\ngpio::BASE.to_arm_pa().unwrap()\u306fGPIO\u30d9\u30fc\u30b9\u30a2\u30c9\u30ec\u30b90xfe20_0000u64\u3092\u6307\u3059\u304c\u3001\u305d\u308c\u3092usize\u306b\u30ad\u30e3\u30b9\u30c8\u3057\u3001\u3055\u3089\u306b*const gpio::Registers \u578b\u306b\u30ad\u30e3\u30b9\u30c8\u3059\u308b\u3002<\/p>\n
\u305d\u306e\u4e0a\u3067\u201d&\u201d\u3092\u3064\u3051\u3001\u305d\u306e\u5834\u6240\u3078\u306e\u53c2\u7167\u3092\u751f\u6210\u3059\u308b\u3001\u3068\u3044\u3046\u64cd\u4f5c\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
<\/p>\n
\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u751f\u30dd\u30a4\u30f3\u30bf (*const _) \u3092\u901a\u5e38\u306e\u53c2\u7167 (&\u2019static _) \u306b\u5909\u63db\u3057\u305f\u5f8c\u306b\u3001safe\u30b3\u30fc\u30c9\u304b\u3089gpio::Registers\u306e\u64cd\u4f5c\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002
\n\uff08\u751f\u30dd\u30a4\u30f3\u30bf\u306e\u307e\u307e\u3067\u3067\u304d\u308b\u3053\u3068\u306f\u307b\u3068\u3093\u3069\u3042\u308a\u307e\u305b\u3093\u3002\uff09<\/span><\/p>\n
\u751f\u30dd\u30a4\u30f3\u30bf (raw pointer, *const _, *mut _)\u306b\u5bfe\u3057\u3066 “&*” \u64cd\u4f5c\u3092\u884c\u3046\u4e3b\u306a\u76ee\u7684\u306f\u3001\u751f\u30dd\u30a4\u30f3\u30bf\u3092\u901a\u5e38\u306e\u53c2\u7167 (&_, &mut _)\u306b\u5909\u63db\u3059\u308b<\/span>\u3053\u3068\u3067\u3059\u3002<\/p>\n
\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3067\u3082\u3053\u306e\u3088\u3046\u306a\u30d1\u30bf\u30fc\u30f3\u304c\u7d39\u4ecb\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
A first attempt in Rust – The Embedded Rust Book (rust-lang.org)<\/a><\/p>\n
 <\/p>\n
\u3053\u306e\u3088\u3046\u306a\u3001\u751f\u30dd\u30a4\u30f3\u30bf\u306e\u53c2\u7167\u89e3\u9664\u306f\u3001unsafe\u64cd\u4f5c\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059\u3002\u3068\u3044\u3046\u306e\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u306e\u4e0d\u6ce8\u610f\u306b\u3088\u3063\u3066\u3053\u306e\u64cd\u4f5c\u3092\u8aa4\u3063\u305f\u5165\u529b\u3067\u884c\u3046\u3068\u672a\u5b9a\u7fa9\u52d5\u4f5c\u3092\u767a\u751f\u3055\u305b\u308b\u3053\u3068\u304c\u53ef\u80fd\u306a\u305f\u3081\u3067\u3059\u3002<\/p>\n
\u3068\u3053\u308d\u3067\u4eca\u56de\u306e\u3053\u306eunsafe\u64cd\u4f5c\u306f\u3001\u30e1\u30e2\u30ea\u5b89\u5168\u6027\u3092\u640d\u306a\u308f\u306a\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002
\n\u305d\u308c\u306b\u3064\u3044\u3066\u3082\u7b54\u3048\u304c\u51fa\u3066\u304a\u308a\u3001<\/p>\n
\u30fbgpio::BASE.to_arm_pa().unwrap()\u304cBCM2711 GPIO\u30ec\u30b8\u30b9\u30bf\u30d6\u30ed\u30c3\u30af\u3092\u6307\u3059\u4eee\u60f3\u30a2\u30c9\u30ec\u30b9\u3092\u6b63\u3057\u304f\u793a\u3057\u3066\u3044\u308b\u3053\u3068
\n\uff08to_arm_pa<\/span><\/a>\u304c\u8fd4\u3059\u306e\u306f\u7269\u7406\u30a2\u30c9\u30ec\u30b9\u3067\u3042\u308a\u3001\u3053\u308c\u3092\u4eee\u60f3\u30a2\u30c9\u30ec\u30b9\u3068\u3057\u3066\u6271\u3048\u308b\u306e\u306f\u3001\u3053\u3053\u306b<\/span>\u8ad6\u7269\u4e00\u81f4\u30de\u30c3\u30d4\u30f3\u30b0\u304c\u5b58\u5728\u3059\u308b<\/span><\/a>\u304b\u3089\u3001\u3067\u3059\uff09<\/span>
\n\u30fbgpio::Registers \u578b\u306fBCM2711 GPIO\u30ec\u30b8\u30b9\u30bf\u30d6\u30ed\u30c3\u30af\u306e\u30a2\u30af\u30bb\u30b9\u7528\u306b\u3001I\/O\u306b\u9069\u3057\u305f\u65b9\u6cd5 (volatile read\/write)\u3067\u30e1\u30e2\u30ea\u30a2\u30af\u30bb\u30b9\u304c\u884c\u308f\u308c\u308b\u3088\u3046\u306b\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u3053\u3068<\/p>\n
\u3053\u308c\u3089\u306e\u3053\u3068\u304c\u5206\u304b\u3063\u3066\u3044\u308b\u305f\u3081\u3001\u30e1\u30e2\u30ea\u5b89\u5168\u6027\u3092\u640d\u306a\u3046\u53ef\u80fd\u6027\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n
\u4eca\u56de\u306e\u3088\u3046\u306bunsafe\u64cd\u4f5c\u3092\u884c\u3046\u5834\u5408\u306b\u306f\u3001\u30e1\u30e2\u30ea\u5b89\u5168\u6027\u3092\u640d\u306a\u3046\u53ef\u80fd\u6027\u306f\u306a\u3044\u3053\u3068\u3092\u3001\u8cac\u4efb\u3092\u3082\u3063\u3066\u4e00\u3064\u4e00\u3064\u6ce8\u610f\u6df1\u304f\u691c\u8a3c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u6ce8\u610f\u3092\u4fc3\u3059\u305f\u3081\u306b\u3001unsafe\u64cd\u4f5c\u3092unsafe\u30d6\u30ed\u30c3\u30af\u306e\u5916\u3067\u884c\u3046\u3068\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u3061\u306a\u307f\u306b\u3001gpio::Registers \u3067\u3069\u306e\u3088\u3046\u306a\u64cd\u4f5c\u304c\u53ef\u80fd\u304b\u3068\u3044\u3046\u4e8b\u3092\u77e5\u308b\u305f\u3081\u306b\u306f\u3001bcm2711_pac\u306e\u30b3\u30fc\u30c9\u3092\u898b\u3066\u307f\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002
\n\u4ee5\u4e0bURL\u306b\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u8208\u5473\u306e\u3042\u308b\u65b9\u306f\u898b\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002
\ngpset\u64cd\u4f5c\u3001gpclr\u64cd\u4f5c\u3001\u7b49\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
https:\/\/github.com\/KyotoMicrocomputer\/solid-rapi4-examples\/blob\/main\/common\/bcm2711_pac\/src\/gpio.rs<\/p>\n
\u81ea\u52d5\u751f\u6210\u3055\u308c\u305fAPI\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u304c\u4ee5\u4e0b\u306b\u3042\u308a\u307e\u3059\u3002\u3053\u3061\u3089\u3082\u3054\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<\/p>\n
https:\/\/kyotomicrocomputer.github.io\/solid-rapi4-examples\/rustdoc\/bcm2711_pac\/gpio\/struct.Registers.html<\/p>\n
\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u90e8\u5206\u3002
\n\"\"<\/a><\/p>\n
ReadWrite\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u307f\u308b\u3068\u3001\u3053\u308c\u304ctock_registers\u306e\u67a0\u7d44\u307f\u3092\u5229\u7528\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002
\n\"\"<\/a>
\n 
\n 
\n\u3055\u3066\u3001\u4ee5\u964d\u306eunsafe\u30d6\u30ed\u30c3\u30af\u304c\u3042\u308b\u884c\u4ee5\u964d\u306e\u30b3\u30fc\u30c9\u306b\u3064\u3044\u3066\u306f\u3001\u3042\u3068\u306f\u305d\u3046\u3044\u3063\u305f\u64cd\u4f5c\u3092\u884c\u3063\u3066\u3044\u308b\u3060\u3051\u3067\u3059\u306d\u3002<\/p>\n
\u30b5\u30f3\u30d7\u30eb\u3068\u3057\u3066\u4f7f\u308f\u305b\u3066\u3082\u3089\u3063\u305f\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u5185\u5bb9\u306f\u3001\u3053\u308c\u3067\u3060\u3044\u305f\u3044\u308f\u304b\u308a\u307e\u3057\u305f\u3002<\/p>\n
<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
\n
\n
\n
\n
\uff12\uff0e\u6761\u4ef6\u6587\u3082\u5c11\u3057\u898b\u3066\u307f\u308b<\/h3>\n
\n
\u6761\u4ef6\u6587\u306b\u3064\u3044\u3066\u3082\u5c11\u3057\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
\uff23\u8a00\u8a9e\u3092\u77e5\u3063\u3066\u3044\u308b\u4eba\u306a\u3089\u3001\u307e\u3063\u305f\u304f\u554f\u984c\u306a\u304f\u7406\u89e3\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u30b3\u30fc\u30c9\u306f\u3001\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u304b\u3089\u306e\u629c\u7c8b\u3067\u3059\u3002
\nhttps:\/\/doc.rust-jp.rs\/rust-by-example-ja\/flow_control.html<\/p>\n
2.1 \u3000for\u6587\u3068if\u6587<\/h3>\n
\n
for n in 1..101 {\n   if n % 15 == 0 {\n      println!(\"fizzbuzz\");\n   } else if n % 3 == 0 {\n      println!(\"fizz\");\n   } else if n % 5 == 0 {\n      println!(\"buzz\");\n   } else {\n      println!(\"{}\", n);\n   }\n}\n<\/code><\/pre>\n<\/div>\n
2.2 \u30eb\u30fc\u30d7\u6587\u3001while\u6587<\/h3>\n
\n
loop {\n   count += 1;\n\u00a0\n   if count == 3 {\n      println!(\"three\");\n\u00a0\n      \/\/ Skip the rest of this iteration\n      \/\/ \u6b8b\u308a\u306e\u51e6\u7406\u3092\u30b9\u30ad\u30c3\u30d7\n      continue;\n   }\n\u00a0\n   println!(\"{}\", count);\n\u00a0\n   if count == 5 {\n      println!(\"OK, that's enough\");\n\u00a0\n      \/\/ Exit this loop\n      \/\/ \u30eb\u30fc\u30d7\u3092\u629c\u3051\u308b\u3002\n      break;\n   }\n}<\/code><\/pre>\n<\/div>\n
\n
while n < 101 {\n   if n % 15 == 0 {\n      println!(\"fizzbuzz\");\n   } else if n % 3 == 0 {\n      println!(\"fizz\");\n   } else if n % 5 == 0 {\n      println!(\"buzz\");\n   } else {\n      println!(\"{}\", n);\n   }\n\u00a0\n   \/\/ Increment counter\n   \/\/ \u30ab\u30a6\u30f3\u30bf\u306b1\u3092\u8ffd\u52a0\n   n += 1;\n}\n<\/code><\/pre>\n<\/div>\n
2.3 Match\u6587\uff08C\u8a00\u8a9e\u306eSwitch\u6587\uff09<\/h3>\n
\n
match number {\n   1 => println!(\"One!\"),\n   2 | 3 | 5 | 7 | 11 => println!(\"This is a prime\"),\n   13..=19 => println!(\"A teen\"),\n   \/\/ \u305d\u306e\u4ed6\u306e\u5834\u5408\u306e\u51e6\u7406\n   _ => println!(\"Ain't special\"),\n}\n<\/code><\/pre>\n<\/div>\n
\u3042\u307e\u308a\u6050\u308c\u308b\u3053\u3068\u306f\u306a\u3055\u305d\u3046\u3067\u3059\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
\n
\n
\uff13\uff0e\u3053\u3053\u307e\u3067\u898b\u3066\u304d\u3066<\/h3>\n
\n
\u3053\u306e\u9023\u8f09\u3092\u59cb\u3081\u308b\u524d\u306f\u3001Rust\u30b3\u30fc\u30c9\u304c\u546a\u6587\u306b\u3057\u304b\u898b\u3048\u306a\u304b\u3063\u305f\u7b46\u8005\u304c\u3001\u3053\u3053\u307e\u3067\u898b\u3066\u304d\u3066\u601d\u3046\u3068\u3053\u308d\u304c\u3042\u308b\u306e\u3067\u52dd\u624b\u306a\u304c\u3089\u611f\u60f3\u3092\u66f8\u304b\u305b\u3066\u3044\u305f\u3060\u304d\u307e\u3059\u3002<\/p>\n[\u30cd\u30ac\u30c6\u30a3\u30d6\u30dd\u30a4\u30f3\u30c8]\u2639
\n\u30fb\u6761\u4ef6\u6587\u3084\u5ba3\u8a00\u6587\u306e\u9055\u3044\u306f\u8a00\u8a9e\u306e\u9055\u3044\u3068\u3057\u3066\u3059\u3050\u306b\u6163\u308c\u308b\u3068\u601d\u3046\u304c\u3001\u53c2\u7167\u3001\u6240\u6709\u6a29\u3001\u3084\u3063\u3071\u308a\u3080\u3064\u304b\u3057\u3044\u3002\u81ea\u5206\u304c\u4f7f\u3044\u3053\u306a\u305b\u308b\u65e5\u304c\u6765\u308b\u6c17\u304c\u3057\u306a\u3044\u3002<\/p>\n[\u30dd\u30b8\u30c6\u30a3\u30d6\u30dd\u30a4\u30f3\u30c8]?
\n\u30fb\u547d\u540d\u898f\u5247\u304c\u53b3\u3057\u304fRFC430\u6e96\u62e0\u5fc5\u8981\u3002\u8ab0\u304c\u66f8\u3044\u3066\u3082\u547d\u540d\u898f\u5247\u304c\u7d71\u4e00\u3055\u308c\u308b\u305f\u3081\u8aad\u307f\u3084\u3059\u3044\u3002
\n\u30fb\u8b0e\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u306a\u3044\u304b\u30c9\u30ad\u30c9\u30ad\u3057\u306a\u304f\u3066\u3059\u3080\u3002
\n\uff08\u8b0e\u306a\u30a8\u30e9\u30fc\uff1a\u306a\u305c\u304b\u307e\u308c\u306b\u30ea\u30bb\u30c3\u30c8\u3059\u308b\u3001\u7b49\u3002\u3060\u3044\u305f\u3044\u30e1\u30e2\u30ea\u30a2\u30af\u30bb\u30b9\u8d77\u56e0\u3002\uff09
\n\u30fb\u6587\u5b57\u5217\u64cd\u4f5c\u304c\u3057\u3084\u3059\u304f\u306a\u3063\u3066\u3044\u308b\u611f\u3058\u304c\u3059\u308b\u3002
\n\u30fb\u30d3\u30eb\u30c9\u304c\u901a\u308a\u3055\u3048\u3059\u308c\u3070\u52d5\u304d\u305d\u3046\u3002\uff08\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u8ad6\u7406\u7684\u306b\u9593\u9055\u3063\u3066\u3044\u306a\u3051\u308c\u3070\uff09<\/p>\n
\u306a\u3093\u3068\u3001\u30cd\u30ac\u30c6\u30a3\u30d6\u30dd\u30a4\u30f3\u30c8\u3088\u308a\u3001\u30dd\u30b8\u30c6\u30a3\u30d6\u30dd\u30a4\u30f3\u30c8\u306e\u65b9\u304c\u591a\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n
\u9023\u8f09\u524d\u307e\u3067\u306f\u3001<\/p>\n
\u300c\u305d\u3046\u306f\u3044\u3063\u3066\u3082\u3001\u3084\u3063\u3071\u308a\u4f7f\u3044\u6163\u308c\u305fC\u8a00\u8a9e\u3067\u306a\u3044\u3068\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u304c\u6016\u3044\u308f\u300d<\/p>\n
\u3068\u601d\u3063\u3066\u3044\u305f\u306e\u3067\u3059\u304c\u3001\u306a\u3093\u3068\uff01<\/p>\n
\u3053\u3053\u306b\u304d\u3066\u3001\u4eca\u307e\u3067\u666e\u901a\u306b\u3042\u308b\u3068\u601d\u3063\u3066\u3044\u305f\u60a9\u307f\u304c\u306a\u304f\u306a\u308b\u306e\u3067\u3042\u308c\u3070\u4f7f\u3063\u3066\u307f\u305f\u3044\u3068\u601d\u3046\u3088\u3046\u306b\u306a\u3063\u3066\u3057\u307e\u3063\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n
\u7279\u306b\u8b0e\u306a\u30ea\u30bb\u30c3\u30c8\u767a\u751f\u3092\u30c7\u30d0\u30c3\u30b0\u3059\u308b\u306e\u3063\u3066\u5927\u5909\u3002\u539f\u56e0\u306f\u5927\u62b5\u4e0d\u6ce8\u610f\u3002\uff08\u3042\u3001\u3057\u307e\u3063\u305f\u3001\u7a0b\u5ea6\u306e\u3084\u3064\u3002\uff09<\/p>\n
\u30e1\u30e2\u30ea\u30a2\u30af\u30bb\u30b9\u8d77\u56e0\u306e\u672a\u5b9a\u7fa9\u4f8b\u5916\u306e\u767a\u751f\u3092\u6291\u3048\u3089\u308c\u308b\u3068\u3044\u3046\u4e8b\u304c\u3001\u3069\u308c\u307b\u3069\u958b\u767a\u671f\u9593\u3092\u77ed\u7e2e\u3057\u3066\u304f\u308c\u308b\u304b\u3001\u3068\u3044\u3046\u70b9\u3001\u5143\u6765\u9069\u5f53\u306a\u6027\u5206\u3067\u3042\u308b\u7b46\u8005\u306b\u306f\u304b\u306a\u308a\u97ff\u3044\u3066\u304a\u308a\u307e\u3059\u3002<\/p>\n
 <\/p>\n
\u4eca\u56de\u306f\u3053\u3053\u307e\u3067\u3002<\/p>\n
\u6b21\u56de\u306f\u300cRust\u3092\u53d6\u308a\u5dfb\u304f\u4e16\u306e\u4e2d\u306e\u53d6\u308a\u7d44\u307f\u300d\u3092\u898b\u3066\u307f\u3088\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\n
<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
(2022\/12\/19) Rust\u306e\u6587\u6cd5\u306b\u3064\u3044\u3066 \u524d\u56de\u307e\u3067\u3067\u3001Rust\u3067\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u3057\u3001\u30af\u30ec\u30fc\u30c8\u3082\u4f5c\u6210\u3057\u3001\u4e00\u901a\u308aRust\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u66f8\u3051\u308b\u3088\u3046\u306a\u96f0\u56f2\u6c17\u306b\u306a\u3063\u3066\u304d\u307e\u3057\u305f\u3002 \u3067\u3082\u672c\u5f53\u306b\u305d\u3046\u3067\u3057\u3087\u3046\u304b\uff1f \u4eca\u307e\u3067\u4f7f\u3063\u3066\u304d\u305f […]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6014","post","type-post","status-publish","format-standard","hentry","category-1"],"_links":{"self":[{"href":"https:\/\/solid.kmckk.com\/SOLID\/wp-json\/wp\/v2\/posts\/6014","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/solid.kmckk.com\/SOLID\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/solid.kmckk.com\/SOLID\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/solid.kmckk.com\/SOLID\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/solid.kmckk.com\/SOLID\/wp-json\/wp\/v2\/comments?post=6014"}],"version-history":[{"count":0,"href":"https:\/\/solid.kmckk.com\/SOLID\/wp-json\/wp\/v2\/posts\/6014\/revisions"}],"wp:attachment":[{"href":"https:\/\/solid.kmckk.com\/SOLID\/wp-json\/wp\/v2\/media?parent=6014"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/solid.kmckk.com\/SOLID\/wp-json\/wp\/v2\/categories?post=6014"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/solid.kmckk.com\/SOLID\/wp-json\/wp\/v2\/tags?post=6014"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}