{"id":6476,"date":"2023-05-12T08:33:17","date_gmt":"2023-05-11T23:33:17","guid":{"rendered":"https:\/\/solid.kmckk.com\/SOLID\/?p=6476"},"modified":"2023-05-12T17:51:52","modified_gmt":"2023-05-12T08:51:52","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-2-5-2-2-2-18","status":"publish","type":"post","link":"https:\/\/solid.kmckk.com\/SOLID\/archives\/6476","title":{"rendered":"SOLID for Raspberry Pi 4 (\u9023\u8f0925)"},"content":{"rendered":"
\n
\n\t

(2023\/5\/12)<\/p>\n<\/div>\n<\/div><\/div>

\uff12\uff15\uff0e Rust\u306e\u30e1\u30e2\u30ea\u914d\u7f6e\u306a\u3069<\/h3>\n
\n\t

\u4eca\u56de\u306f\u3001\u7d44\u307f\u8fbc\u307f\u958b\u767a\u3067\u3088\u304f\u4f7f\u3046\u3001\u300c\u3057\u304b\u308b\u3079\u304d\u5834\u6240\u306b\u3057\u304b\u308b\u3079\u304d\u30c7\u30fc\u30bf\u3092\u914d\u7f6e\u3059\u308b\u300d\u3092\u3044\u304f\u3064\u304b\u8a66\u3057\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

\u826f\u304f\u3042\u308b\u30b1\u30fc\u30b9\uff1a
\n\u30fbUART\u3001BLE\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7b49\u3001\u901a\u4fe1\u7528\u30d1\u30b1\u30c3\u30c8\u3092\u914d\u7f6e\u3059\u308b
\n\u30fb\u69cb\u9020\u4f53\u3092\u5171\u7528\u4f53\u306e\u4e2d\u306b\u5165\u308c\u3066\u3001\u7570\u306a\u308b\u65b9\u6cd5\u3067\u540c\u3058\u30c7\u30fc\u30bf\u3092\u30a2\u30af\u30bb\u30b9\u3059\u308b
\n\u30fb\u30e1\u30e2\u30ea\u306e\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3092\u610f\u8b58\u3057\u305f\u914d\u7f6e\u306b\u3059\u308b
\n\u30fbVolatile
\n\u30fb\u30d3\u30c3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9
\n\u30fb\u3068\u3042\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u304b\u305f\u307e\u308a\u3092\u3001\u3057\u304b\u308b\u3079\u304d\u30a2\u30c9\u30ec\u30b9\u306b\u914d\u7f6e\u3059\u308b<\/p>\n

\u3053\u308c\u3089\u3001\u8a66\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n

\u3064\u3044\u3067\u306b\u3001\u30a4\u30f3\u30e9\u30a4\u30f3\u30a2\u30bb\u30f3\u30d6\u30e9\u306b\u3064\u3044\u3066\u3082\u8a66\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n

 <\/p>\n<\/div>\n<\/div><\/div>

\uff11\uff0e\u901a\u4fe1\u7528\u30d1\u30b1\u30c3\u30c8\u3092\u914d\u7f6e\u3059\u308b<\/h3>\n
\n\t

 <\/p>\n

\u4ee5\u524d\u306e\u8a18\u4e8b<\/a>\u3067\u8a66\u3057\u3066\u307f\u305f\u901a\u308a\u3001C\/C++\u8a00\u8a9e\u3067\u66f8\u304f\u6642\u306e\u3088\u3046\u306b\u5ba3\u8a00\u3057\u305f\u30e1\u30f3\u30d0\u306e\u9806\u306b\u30e1\u30e2\u30ea\u306b\u914d\u7f6e\u3055\u308c\u308b\u305f\u3081\u306b\u306f\u3001#[repr(C)]\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u304c\u5fc5\u8981\u3067\u3057\u305f\u3002<\/p>\n

\u3053\u3053\u3067\u306fUART\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d7\u4fe1\u3059\u308b\u3068\u4eee\u5b9a\u3057\u3001\u53d7\u4fe1\u30c7\u30fc\u30bf\u306e\u30d1\u30b1\u30c3\u30c8\u4ed5\u69d8\u306f\u4ee5\u4e0b\u3068\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n
\u30d1\u30b1\u30c3\u30c8\u5185\u5bb9<\/th>\nByte 0<\/th>\nByte 1<\/th>\nByte 2<\/th>\nByte 3<\/th>\n<\/tr>\n
\u30d8\u30c3\u30c0\u30fc\uff08\u56fa\u5b9a\uff09<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\u30b3\u30de\u30f3\u30c9\uff080x00-0xff\uff09<\/td>\n<\/td>\n-<\/td>\n-<\/td>\n-<\/td>\n<\/tr>\n
Data1\uff08\uff14bytes\uff09<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
Data\uff12\uff08\uff12bytes\uff09\u3001Data\uff13\uff08\uff11byte\uff09<\/td>\n<\/td>\n<\/td>\n<\/td>\n-<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u69cb\u9020\u4f53\u306f\u3053\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\n
#[repr(C)]\nstruct TestPacktRecvData\n{\n    header: u32,\n    command: u8,\n    data1: u32,\n    data2: u16,\n    data3: u8,\n}\n<\/code><\/pre>\n<\/div>\n
\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3057\u3066\u4f7f\u3063\u3066\u307f\u307e\u3059\u3002
\n\u4eca\u56de\u306fstatic\u306b\u3057\u3066\u307f\u307e\u3059\u3002\u6392\u4ed6\u5236\u5fa1\u304c\u5fc5\u8981\u305d\u3046\u306a\u30b3\u30fc\u30c9\u3067\u3059\u304c\u3001\u3084\u3084\u3053\u3057\u304f\u306a\u308b\u306e\u3067\u4eca\u56de\u306f\u7701\u7565\u3067\u3002<\/p>\n
\n
static mut PACKETBUF:TestPacktRecvData  = TestPacktRecvData{\n    header:0x11223344, command:0x0a, data1:0x55555555, data2:0x1111, data3:0xFF\n};\n\n#[no_mangle]\npub extern \"C\" fn slo_main() {\n    println!(\"Hello world from Rust lib!\");\n    changedata();\n    showdata();\n}\n\nfn changedata(){\n    unsafe{ PACKETBUF.header = 0x11111111 };\n}\n\nfn showdata(){\n    unsafe{\n        println!(\"header={:#X}, command={:#X}, data1={:#X}, data2={:#X}, data3={:#X}\"\n        ,PACKETBUF.header, PACKETBUF.command, PACKETBUF.data1, PACKETBUF.data2, PACKETBUF.data3);\n    }\n}\n<\/code><\/pre>\n<\/div>\n
unsafe\u3060\u3089\u3051\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002<\/p>\n
unsafe\u3092\u4ed8\u3051\u306a\u3044\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u304c\u51fa\u307e\u3059\u3002<\/p>\n
|
\n22 | PACKETBUF.header = 0x11111111;
\n| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ use of mutable static
\n|
\n= note: mutable statics can be mutated by multiple threads: aliasing violations or data races will cause undefined behavior<\/p>\n
 <\/p>\n
\u6392\u4ed6\u5236\u5fa1\u3092\u7121\u8996\u3057\u305f\u304b\u3089\u3067\u3059\u306d\u3002<\/p>\n
\u4eca\u56de\u306f\u30e1\u30e2\u30ea\u914d\u7f6e\u306b\u3064\u3044\u3066\u8a66\u3057\u3066\u307f\u308b\u56de\u3001\u3067\u3059\u306e\u3067\u3001unsafe\u3060\u3089\u3051\u3067\u3082\u307e\u3041\u826f\u3057\u3068\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u3061\u306a\u307f\u306b\u3001\u6392\u4ed6\u5236\u5fa1\u3092\u4ed8\u3051\u308b\u306b\u3042\u305f\u3063\u3066\u306f\u3001\u4ee5\u524d\u306e\u8a18\u4e8b\u3067\u66f8\u3044\u305f\u8a18\u61b6\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
https:\/\/note.com\/yn_2022\/n\/nc24f46a9274d#882361d9-38f5-48f3-9db6-beff5047b9e7<\/a><\/p>\n
\u8907\u6570\u30b9\u30ec\u30c3\u30c9\u304b\u3089\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u5171\u6709\u5909\u6570\u3092\u4ed8\u3051\u3066\u307f\u305f\u56de\u3001\u3067\u3059\u306d\u3002<\/p>\n
\u3067\u306f\u4ed5\u5207\u308a\u306a\u304a\u3057\u3066\u3002
\n\u30e1\u30e2\u30ea\u914d\u7f6e\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u671f\u5f85\u901a\u308a\u306b\u5272\u308a\u3064\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n
\"\"<\/a><\/p>\n
\u3067\u306f\u3053\u306e\u69cb\u9020\u4f53\u306b\u3001\u53d7\u4fe1\u3057\u305f\u3068\u60f3\u5b9a\u3059\u308b\u4eee\u30c7\u30fc\u30bf\u3092\u304c\u3055\u3063\u3068\u5165\u308c\u3066\u3001\u305d\u308c\u3092\u69cb\u9020\u4f53\u7d4c\u7531\u3067\u8aad\u3093\u3067\u307f\u307e\u3057\u3087\u3046\u3002
\n\u5927\u4f53\u306e\u30b1\u30fc\u30b9\u3067\u306fDMA\u3067\u76f4\u63a5\u304c\u3055\u3063\u3068\u5165\u308b\u306e\u3067\u3057\u3087\u3046\u304c\u3001\u3053\u3053\u306fCPU\u3067\u3084\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u30dd\u30a4\u30f3\u30bf\u3067\u5834\u6240\u3092\u628a\u63e1\u3057\u3066\u3001\u66f8\u304d\u8fbc\u307f\u307e\u3059\u3002
\n\u307e\u305f\u307e\u305funsafe\u3067\u3059\u306d\u3002<\/p>\n
 <\/p>\n
\"\"<\/a><\/p>\n
\u304a\u3063\u3068\u3001\u9593\u9055\u3048\u3066\u30c7\u30fc\u30bf\u3092\u4e0a\u66f8\u304d\u3057\u3059\u304e\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002<\/p>\n
unsafe\u306a\u306e\u3067\u3001\u3053\u3046\u3044\u3046\u3053\u3068\u306b\u3082\u666e\u901a\u306b\u306a\u308a\u307e\u3059\u3002C\/C++\u3068\u540c\u3058\u3067\u3059\u3002
\n\u60aa\u3044\u898b\u672c\u3067\u3059\u3002<\/p>\n
for i in 0..4\u306b\u5909\u66f4\u3057\u3001\u5148\u306b\u9032\u307f\u307e\u3059\u3002<\/p>\n
\"\"<\/a><\/p>\n
\u52d5\u304d\u307e\u3057\u305f\u3002
\nDebug\u30d3\u30eb\u30c9\u3067\u3082Release\u30d3\u30eb\u30c9\u3067\u3082\u540c\u69d8\u3067\u3057\u305f\u3002<\/p>\n
 <\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>
\uff12\uff0e\u69cb\u9020\u4f53\u3092\u5171\u7528\u4f53\u306e\u4e2d\u306b\u5165\u308c\u308b<\/h3>\n
\n\t
\u6b21\u306b\u3001\u5171\u7528\u4f53\u3092\u4f7f\u3063\u3066\u307f\u307e\u3059\u3002<\/p>\n
\u5148\u7a0b\u306e\u30d1\u30b1\u30c3\u30c8\u3092\u3001\u5171\u7528\u4f53\u3092\u4f7f\u3063\u3066\u914d\u5217\u3068\u3057\u3066\u3082\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n
\n
use std::mem::ManuallyDrop;\n\n#[repr(C)]\nstruct TestPacktRecvData\n{\n    header: u32,\n    command: u8,\n    data1: u32,\n    data2: u16,\n    data3: u8,\n}\n\nunion TestPacktRecvDataUnion{\n    packet:  ManuallyDrop,\n    data: [u8; 15],\n}\n<\/code><\/pre>\n<\/div>\n
ManuallyDrop\u3092\u4ed8\u3051\u306a\u3044\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\"\"<\/a><\/p>\n
 <\/p>\n
\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3067\u3001<\/p>\n
\u300c\u5171\u7528\u4f53\u3092\u521d\u671f\u5316\u3000\u21d2\u3000\u3059\u3079\u30660x11\u306b\u4e0a\u66f8\u304d\u3000\u21d2\u3000\u8868\u793a\u300d<\/p>\n
\u3092\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n
\n
#[no_mangle]\npub extern \"C\" fn slo_main() {\n    println!(\"Hello world from Rust lib!\");\n    let mut u = TestPacktRecvDataUnion{ data: [0x00 ; 15] };\n\n    unsafe {\n        for i in 0..15 { \n            u.data[i] = 0x11;\n        }\n        println!(\"header={:#X}, command={:#X}, data1={:#X}, data2={:#X}, data3={:#X}\"\n        ,u.packet.header, u.packet.command, u.packet.data1, u.packet.data2, u.packet.data3);\n    }\n\n}\n<\/code><\/pre>\n<\/div>\n
\u3061\u306a\u307f\u306b\u5171\u7528\u4f53\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u306e\u306funsafe\u3060\u305d\u3046\u3067\u3059\u3002<\/p>\n
\u5171\u7528\u4f53\u521d\u671f\u5316\u76f4\u5f8c\u306b\u6b62\u3081\u3066\u307f\u307e\u3059\u3002<\/p>\n
\"\"<\/a><\/p>\n
\u5171\u7528\u4f53\u306edata[]\u914d\u5217\u306b\u3001for\u30eb\u30fc\u30d7\u3067\u5024\u3092\u57cb\u3081\u3066\u3044\u3063\u305f\u5f8c\u3067\u6b62\u3081\u3066\u307f\u307e\u3059\u3002<\/p>\n
\"\"<\/a><\/p>\n
\u3055\u3089\u306b\u5b9f\u884c\u3002<\/p>\n
\"\"<\/a><\/p>\n
\u610f\u56f3\u901a\u308a\u52d5\u304d\u307e\u3057\u305f\u3002
\nDebug\u30d3\u30eb\u30c9\u3067\u3082Release\u30d3\u30eb\u30c9\u3067\u3082\u540c\u69d8\u3067\u3057\u305f\u3002<\/p>\n
 <\/p>\n<\/div>\n<\/div><\/div>
\uff13\uff0e\u30e1\u30e2\u30ea\u306e\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3092\u610f\u8b58\u3057\u305f\u914d\u7f6e<\/h3>\n
\n\t
\u7d44\u307f\u8fbc\u307f\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u3001\u3057\u3070\u3057\u3070\u3001\u30c7\u30fc\u30bf\u30d6\u30ed\u30c3\u30af\u3092\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3057\u305f\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u4f8b\u3048\u3070\u30ad\u30e3\u30c3\u30b7\u30e5\u30e9\u30a4\u30f3\u3092\u610f\u8b58\u3057\u3066\u3001\u52b9\u7387\u7684\u306b\u30c7\u30fc\u30bf\u30d6\u30ed\u30c3\u30af\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u8f09\u305b\u305f\u3044\u5834\u5408\u3002
\n\u3082\u3057\u30ad\u30e3\u30c3\u30b7\u30e5\u30e9\u30a4\u30f3\u306e\u30b5\u30a4\u30ba\u304c64\u30d0\u30a4\u30c8\u3067\u3042\u308c\u3070\u3001\u30c7\u30fc\u30bf\u30d6\u30ed\u30c3\u30af\u309264\u30d0\u30a4\u30c8\u5883\u754c\u306b\u914d\u7f6e\u3057\u3066\u3001\u4e00\u6c17\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u30d5\u30a3\u30eb\u3057\u3066\u3082\u3089\u3046\u3088\u3046\u306b\u3057\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u9ad8\u901f\u5316\u3092\u56f3\u308b\u6642\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
gcc\u3067\u3042\u308c\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
int datablock[8] __attribute((aligned(64));<\/p>\n
Rust\u3067\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u66f8\u3051\u3070\u3088\u3044\u3088\u3046\u3067\u3059\u3002<\/p>\n
\n
#[repr(align(64))]\nstruct BlockData {\n    data: [u8; 32],\n}<\/code><\/pre>\n<\/div>\n
\u3082\u3063\u3068\u5927\u304d\u306a\u3001\u4f8b\u3048\u3070\u30d5\u30ec\u30fc\u30e0\u30d0\u30c3\u30d5\u30a1\u30924k\u30d0\u30a4\u30c8\u5883\u754c\u306b\uff01\u3068\u3044\u3046\u306e\u3082\u5927\u4e08\u592b\u3067\u3059\u3002<\/p>\n
\n
#[repr(align(4096))]\nstruct FrameData {\n    data: [u8; 4096],\n}<\/code><\/pre>\n<\/div>\n
\u52d5\u304b\u3057\u3066\u307f\u307e\u3059\u3002
\n\u4ee5\u4e0b\u306e\uff14\u3064\u306e\u30c7\u30fc\u30bf\u30d6\u30ed\u30c3\u30af\u3092\u5b9a\u7fa9\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n
\n
static BLOCKDATABUF:BlockData = BlockData{\n\u3000\u3000data:[1; 32]\n};\nstatic BLOCKDATABUF1:BlockData = BlockData{\n\u3000\u3000data:[2; 32]\n};\nstatic FLAMEDATABUF:FrameData = FrameData{\n\u3000\u3000data:[3; 4096]\n};\nstatic FLAMEDATABUF1:FrameData = FrameData{\n\u3000\u3000data:[4; 4096]\n};\n<\/code><\/pre>\n<\/div>\n
 <\/p>\n
\"\"<\/a><\/p>\n
\u610f\u56f3\u901a\u308a\u306b\u5272\u3064\u3044\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n
 <\/p>\n<\/div>\n<\/div><\/div>
\uff14\uff0eVolatile<\/h3>\n
\n\t
\u30e1\u30e2\u30ea\u914d\u7f6e\u3001\u3068\u306f\u7570\u306a\u308a\u307e\u3059\u304c\u3001\u7d44\u307f\u8fbc\u307f\u3067\u3088\u304f\u4f7f\u3044\u307e\u3059\u3088\u306d\u3002
\n\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u6700\u9069\u5316\u306e\u6642\u306b\u3001\u5fc5\u8981\u306a\u3044\u30b3\u30fc\u30c9\u3060\u3068\u8a8d\u8b58\u3055\u308c\u3066\u30b3\u30fc\u30c9\u304c\u306a\u304f\u306a\u3063\u3066\u3057\u307e\u3046\u4e8b\u3092\u9632\u3050\u30a2\u30ec\u3067\u3059\u3002<\/p>\n
Rust\u3067\u3082\u540c\u3058\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n
https:\/\/doc.rust-lang.org\/std\/ptr\/fn.read_volatile.html<\/a><\/p>\n
https:\/\/doc.rust-lang.org\/std\/ptr\/fn.write_volatile.html<\/a><\/p>\n
\u305f\u3060\u3001\u3084\u306f\u308aunsafe\u3067\u304f\u304f\u3089\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u3088\u3046\u3067\u3059\u3002<\/p>\n
 <\/p>\n<\/div>\n<\/div><\/div>
\uff15\uff0e\u30d3\u30c3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9<\/h3>\n
\n\t
\u6b21\u306b\u3001\u30d3\u30c3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u3064\u3044\u3066\u898b\u3066\u307f\u307e\u3059\u3002<\/p>\n
\u826f\u3044\u30b5\u30f3\u30d7\u30eb\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
https:\/\/github.com\/KyotoMicrocomputer\/solid-rapi4-examples\/blob\/main\/common\/bcm2711_pac\/src\/spi.rs<\/a><\/p>\n
GPIO\u3001SPI\u30da\u30ea\u30d5\u30a7\u30e9\u30eb\u30ec\u30b8\u30b9\u30bf\u64cd\u4f5c\u3092\u884c\u3046\u3068\u304d\u306b\u4f7f\u3063\u305f\u3001tock_registers\u30af\u30ec\u30fc\u30c8\u3092use\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
37\u884c\u76ee\u304b\u3089\u3002<\/p>\n
\n
register_bitfields! {u32,\n    pub CS [\n        \/\/\/ Chip select\n        CS OFFSET(0) NUMBITS(2) [\n            ChipSelect0 = 0b00,\n            ChipSelect1 = 0b01,\n            ChipSelect2 = 0b10,\n        ],\n<\/code><\/pre>\n<\/div>\n
\u3068\u3044\u3063\u305f\u611f\u3058\u306b\u3001\u30d3\u30c3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u3067\u66f8\u304b\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u66f8\u304d\u65b9\u306e\u304a\u4f5c\u6cd5\u304c\u9055\u3048\u3069\u3001C\/C++\u3068\u540c\u3058\u3088\u3046\u306a\u611f\u3058\u3067\u4f7f\u3048\u305d\u3046\u3067\u3059\u3002<\/p>\n
 <\/p>\n
\u3053\u3053\u3067\u4f5c\u6210\u8005\u306e\u65b9\u304b\u3089\u30b3\u30e1\u30f3\u30c8\u9802\u304d\u307e\u3057\u305f\u3002<\/p>\n
tock_registers\u306f\u30da\u30ea\u30d5\u30a7\u30e9\u30eb\u30ec\u30b8\u30b9\u30bf\u64cd\u4f5c\u7528\u306e\u3082\u306e\u3067\u3001\u4e00\u822c\u306e\u69cb\u9020\u4f53\u3067\u306f\u4f7f\u308f\u308c\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8aad\u307f\u66f8\u304d\u304cvolatile\u30a2\u30af\u30bb\u30b9\u3067\u884c\u308f\u308c\u308b\u305f\u3081\u3001\u6700\u9069\u5316\u306e\u59a8\u3052\u306b\u3082\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u30d3\u30c3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u81ea\u4f53Rust\u3067\u306f\u3042\u307e\u308a\u4f7f\u308f\u308c\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u5b9a\u756a\u306e\u65b9\u6cd5\u3068\u3057\u3066\u4ee5\u4e0b\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n