{"id":3739,"date":"2017-03-04T06:39:44","date_gmt":"2017-03-03T21:39:44","guid":{"rendered":"http:\/\/happytech.jp\/wordpress\/?p=3739"},"modified":"2019-06-28T23:47:39","modified_gmt":"2019-06-28T14:47:39","slug":"rtos-for-iot-mcu-task-communication-interrupt-resource-management","status":"publish","type":"post","link":"https:\/\/happytech.jp\/wordpress\/2017\/03\/04\/rtos-for-iot-mcu-task-communication-interrupt-resource-management\/","title":{"rendered":"RTOS\u3078\u306e\u5099\u3048\uff1a\u7b2c3\u56de\u3001\u30bf\u30b9\u30af\u9593\u30c7\u30fc\u30bf\u901a\u77e5\u3001\u540c\u671f\u3001\u6392\u4ed6\u5236\u5fa1"},"content":{"rendered":"

\u5404\u30bf\u30b9\u30af\u304c\u72ec\u7acb\uff1d\u30d0\u30e9\u30d0\u30e9\u3067\u52d5\u4f5c\u3059\u308b\u5834\u5408\u306b\u306f\u3001\u7b2c\uff12\u56de<\/a>\u306b\u793a\u3057\u305f\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u30fc\u306eRunning\u306e\u5207\u308a\u66ff\u3048\u306e\u307f\u3067\u3082RTOS\u3092\u4f7f\u3063\u305f\u30de\u30eb\u30c1\u30bf\u30b9\u30af\u3068\u3057\u3066\u306f\u5341\u5206\u6a5f\u80fd\u3057\u307e\u3059\u3002\u5b9f\u969b\u3001LPCXpresso\u4ed8\u5c5e\u306efreertos_blinky\u30b5\u30f3\u30d7\u30eb\u30bd\u30d5\u30c8\u3092\u7406\u89e3\u3059\u308b\u306b\u306f\u3001\u7b2c2\u56de\u307e\u3067\u306e\u8aac\u660e\u3067\u5341\u5206\u3067\u3059\u3002<\/p>\n

\u3057\u304b\u3057\u3001\u3042\u308b\u30bf\u30b9\u30af\u306e\u7d50\u679c\u3092\u5f85\u3063\u3066\u5225\u30bf\u30b9\u30af\u304c\u52d5\u4f5c\u3059\u308b\u3088\u3046\u306a\u5834\u5408\u306b\u306f\u3001\u7d50\u679c\u306e\u5f85\u3061\u3084\u901a\u77e5\u3001\u30bf\u30b9\u30af\u9593\u306e\u540c\u671f\u304c\u5fc5\u8981\u3067\u3059\u3002\u4eca\u56de\u306f\u3001RTOS\u304c\u3069\u306e\u3088\u3046\u306b\u3053\u308c\u3089\u30bf\u30b9\u30af\u9593\u306e\u30c7\u30fc\u30bf\u901a\u77e5\u3001\u540c\u671f\u3092\u884c\u3063\u3066\u3044\u308b\u304b\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n

\u3053\u308c\u3089\u306e\u6280\u8853\u3092\u7fd2\u5f97\u3059\u308c\u3070\u3001\u6b86\u3069\uff087\u5272\u4ee5\u4e0a\uff09\u306e\u30bd\u30d5\u30c8\u958b\u767a\u3092FreeRTOS\u3067\u30ab\u30d0\u30fc\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u3053\u3053\u304cRTOS\u7fd2\u5f97\u306e\u5c71\u5834\u3068\u8a00\u3063\u3066\u3082\u826f\u3044\u3067\u3057\u3087\u3046\u3002\u5c11\u3057\u91cf\u304c\u591a\u3044\u306e\u3067\u3059\u304c\u3001\u3054\u52d8\u5f01\u3092\u2026\u3002<\/p>\n

\u521d\u3081\u306b\u3001\u72b6\u614b\u9077\u79fb\u56f3\u306eSuspended\u306b\u3088\u308b\u30bf\u30b9\u30af\u9593\u306e\u5f85\u3061\u3084\u540c\u671f\u3092\u884c\u3046\u4ed5\u7d44\u307f\u3092\u8aac\u660e\u3057\u3001\u6b21\u306b\u5177\u4f53\u7684\u306a\u65b9\u6cd5\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n

Suspended\u306e\u5f79\u76ee<\/span><\/h2>\n

\u7b2c2\u56de\u3067\u793a\u3057\u305f\u72b6\u614b\u9077\u79fb\u56f3\u306eSuspended\u304c\u3001\u30bf\u30b9\u30af\u306e\u5f85\u3061\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/p>\n

\u30bf\u30b9\u30afA\u3068\u30bf\u30b9\u30afB\u9593\u306e\u901a\u77e5\u3084\u540c\u671f\u306b\u306f\u3001\u30bf\u30b9\u30af\u5b9f\u884c\u4e2d\u306b\u5225\u30bf\u30b9\u30af\u306e\u7d50\u679c\u3092\u5f85\u3064\u3053\u3068\u304c\u5fc5\u8981\u3068\u306a\u308a\u307e\u3059\u3002\u30bf\u30b9\u30afA\u306b\u5f85\u3061\u304c\u767a\u751f\u3057\u305f\u6642\u306f\u3001vTaskSuspened()\u306eAPI\u3092\u4f7f\u3063\u3066Suspended\u3078\u79fb\u884c\u3057\u3001\u30bf\u30b9\u30afB\u306e\u7d50\u679c\u3092\u53d7\u3051\u53d6\u308b\u3068\u3001RTOS\u304cvTaskResume()\u306eAPI\u3092\u4f7f\u3063\u3066\u30bf\u30b9\u30afA\u3092Ready\u3078\u623b\u3057\u307e\u3059\u3002Suspended\u4e2d\u3082\u7b2c2\u56de\u3067\u793a\u3057\u305fBlocked\u540c\u69d8\u3001MCU\u80fd\u529b\u3092\u6d88\u8cbb\u3057\u307e\u305b\u3093\u306e\u3067\u3001\u5f85\u3061\u671f\u9593\u4e2d\u3082\u4ed6\u306e\u30bf\u30b9\u30af\u304cRunning\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u4ee5\u4e0a\u304cSuspended\u306b\u3088\u308b\u30bf\u30b9\u30af\u306e\u5f85\u3061\u3084\u540c\u671f\u3092\u884c\u3046\u4ed5\u7d44\u307f\u306e\u7c21\u5358\u306a\u8aac\u660e\u3067\u3059\u3002Blocked\u3068\u4f3c\u3066\u3044\u308b\u3053\u3068\u304c\u89e3\u308b\u3068\u601d\u3044\u307e\u3059\u3002\u9055\u3044\u306f\u3001Blocked\u304cRunning\u304b\u3089\u306e\u307f\u9077\u79fb\u3059\u308b\u306e\u306b\u5bfe\u3057\u3001\u3069\u306e\u72b6\u614b\u304b\u3089\u3067\u3082Suspended\u3078\u9077\u79fb\u3067\u304d\u308b\u70b9\u3067\u3059\u3002\u6b21\u306bRTOS\u3067\u306e\u5177\u4f53\u7684\u306a\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n

FreeRTOS\u306e\u30bf\u30b9\u30af\u9593\u30c7\u30fc\u30bf\u901a\u4fe1\u3001\u540c\u671f\u3001\u6392\u4ed6\u5236\u5fa1\u306e\u65b9\u6cd5<\/span><\/h2>\n

RTOS\u3092\u4f7f\u308f\u306a\u3044\u901a\u5e38\u30bd\u30d5\u30c8\u306e\u5834\u5408\u306f\u3001\u30e6\u30fc\u30b6\u304c\u5b9a\u7fa9\u3059\u308b\u30e1\u30e2\u30ea\u7d4c\u7531\u3067\u3001\u5909\u6570\u3084\u7d50\u679c\u306e\u901a\u77e5\u3092\u30e6\u30fc\u30b6\u81ea\u8eab\u304c\u884c\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u5272\u8fbc\u307f\u306b\u3088\u308a\u540c\u671f\u304c\u53ef\u80fd\u3067\u3059\u3002\u5f0a\u793e\u30de\u30a4\u30b3\u30f3\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8<\/a>\u3082\u3053\u306e\u65b9\u6cd5\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

FreeRTOS\u3092\u4f7f\u3046\u30bd\u30d5\u30c8\u958b\u767a\u306e\u5834\u5408\u306f\u3001
\n\u30bf\u30b9\u30af\u9593\u306e\u30c7\u30fc\u30bf\u901a\u4fe1\u306f\u3001\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Queues\uff1a\u30ad\u30e5\u30fc\u3001
\n\u30bf\u30b9\u30af\u9593\u306e\u540c\u671f\u306f\u3001\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Semaphore\uff1a\u30bb\u30de\u30d5\u30a9\u3001
\n\u30bf\u30b9\u30af\u9593\u306e\u6392\u4ed6\u5236\u5fa1\u306f\u3001\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Mutex\uff08\uff1dmutual exclusion\uff09\uff1a\u30df\u30e5\u30fc\u30c6\u30a3\u30c3\u30af\u30b9\u3001
\n\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n

Queues\uff1a\u30ad\u30e5\u30fc\u306b\u3088\u308b\u30bf\u30b9\u30af\u9593\u30c7\u30fc\u30bf\u901a\u4fe1<\/span><\/h2>\n

FreeRTOS\u306f\u3001Operating System\u3067\u3059\u306e\u3067MCU\u8cc7\u6e90\u306e\u30e6\u30fc\u30b6\u306b\u3088\u308b\u76f4\u63a5\u30a2\u30af\u30bb\u30b9\u3092\u5acc\u3044\u307e\u3059\u3002\u30e1\u30e2\u30ea\u306a\u3069\u306e\u76f4\u63a5\u8868\u73fe\u3067\u306f\u306a\u304f\u3001\u8ad6\u7406\u7684\u306b\u30e1\u30e2\u30ea\u3092\u7e4b\u3052\u305fQueues\uff1a\u30ad\u30e5\u30fc\u3068\u3044\u3046\u624b\u6bb5\u3067\u3001\u901a\u4fe1\u3068\u3044\u3046\u65b9\u6cd5\u306b\u3088\u308a\u30bf\u30b9\u30af\u9593\u30c7\u30fc\u30bf\u9001\u53d7\u4fe1\u3092\u884c\u3044\u307e\u3059\u3002FreeRTOS\u306e\u30bf\u30b9\u30af\u9593\u901a\u4fe1Queues\uff1a\u30ad\u30e5\u30fc\u306f\u3001FIFO\uff1aFirst In First Out\u3068\u3057\u3066\u4f7f\u3044\u307e\u3059\u3002<\/p>\n

\"FreeRTOS
FreeRTOS Task Communication<\/figcaption><\/figure>\n

\u30bf\u30b9\u30afA\u304b\u3089\u30bf\u30b9\u30afB\u3078\u30ad\u30e5\u30fc\u7d4c\u7531\u3067\u30c7\u30fc\u30bf\u901a\u4fe1\u3059\u308b\u4f8b\u3067\u3059\u3002\u53d7\u4fe1\u30bf\u30b9\u30afB\u306f\u3001xQueueReceive()\u3067\u30ad\u30e5\u30fc\u304b\u3089\u306e\u30c7\u30fc\u30bf\u3092\u53d7\u4fe1\u3057\u307e\u3059\u3002\u3053\u306e\u30ad\u30e5\u30fc\u306b\u30c7\u30fc\u30bf\u304c\u7121\u3044\u6642\u306e\u307fSuspended\u3078\u79fb\u884c\u3057\u307e\u3059\u3002Suspended\u4e2d\u306f\u3001\u30ad\u30e5\u30fc\u30c7\u30fc\u30bf\u6709\u7121\u3092RTOS\u304c\u76e3\u8996\u3057\u3001\u30c7\u30fc\u30bf\u304c\u751f\u3058\u305f\u6642\u306f\u30bf\u30b9\u30afB\u306exQueueReceive()\u4ee5\u964d\u306e\u51e6\u7406\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u3064\u307e\u308a\u30bf\u30b9\u30afB\u306f\u3001xQueseReceive()\u306e\u8a18\u8ff0\u306e\u307f\u3067\u30c7\u30fc\u30bf\u53d7\u4fe1\u51e6\u7406\u304c\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u30c7\u30fc\u30bf\u6709\u7121\u306b\u3088\u308b\u5f85\u3061\u5236\u5fa1\u306f\u5168\u3066RTOS\u5074\u3067\u884c\u3044\u307e\u3059\u306e\u3067\u3001\u30bf\u30b9\u30afB\u306f\u53d7\u4fe1\u51e6\u7406\u306e\u307f\u306e\u7c21\u5358\u8a18\u8ff0\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u30ad\u30e5\u30fc\u306b\u3088\u308a\u9001\u53d7\u4fe1\u30bf\u30b9\u30af\u306e\u51e6\u7406\u306f\u5b8c\u5168\u306b\u5206\u96e2\u3055\u308c\u307e\u3059\u304c\u3001\u51e6\u7406\u7d50\u679c\u306e\u30c7\u30fc\u30bf\u306f\u3001FIFO\u306a\u306e\u3067\u9806\u5e8f\u304c\u4fdd\u305f\u308c\u3066\u901a\u4fe1\u3055\u308c\u307e\u3059\u3002<\/p>\n

Semaphore\uff1a\u30bb\u30de\u30d5\u30a9\u306b\u3088\u308b\u540c\u671f<\/span><\/h2>\n

FreeRTOS\u306eSemaphore\uff1a\u30bb\u30de\u30d5\u30a9\u306f\u3001\u30d0\u30a4\u30ca\u30ea\u30bb\u30de\u30d5\u30a9\u3067\u3059\u3002\u5272\u8fbc\u307f\u306b\u3088\u308b\u540c\u671f\u3092\u56f3\u793a\u3057\u307e\u3059\u3002<\/p>\n

\"FreeRTOS
FreeRTOS Semaphore<\/figcaption><\/figure>\n

\u5272\u8fbc\u307f\u51e6\u7406\u306f\u3001\u5272\u8fbc\u307f\u30cf\u30f3\u30c9\u30e9\u30fc\u3068\u5272\u8fbc\u307f\u30b5\u30fc\u30d3\u30b9\u30eb\u30fc\u30c6\u30a3\u30f3\uff1aISR\u306e2\u3064\u3067\u69cb\u6210\u3057\u307e\u3059\u3002\u5272\u8fbc\u307f\u767a\u751f\u6642\u3001\u512a\u5148\u9806\u4f4d\u306b\u5fdc\u3058\u3066MCU\u30cf\u30fc\u30c9\u30a6\u30a8\u30a2\u304c\u81ea\u52d5\u7684\u306bCall\u3059\u308b\u306e\u304c\u5272\u8fbc\u307f\u30cf\u30f3\u30c9\u30e9\u30fc\u3001\u5b9f\u969b\u306e\u5272\u8fbc\u307f\u51e6\u7406\u3092\u8a18\u8ff0\u3059\u308b\u90e8\u5206\u304cISR\u3067\u3059\u3002\u203b\u56f3\u3067\u306f\u3001Interrupt!\u304c\u30cf\u30f3\u30c9\u30e9\u30fc\u3001Task\u304cISR\u3067\u3059\u3002<\/p>\n

FreeRTOS\u306e\u5272\u8fbc\u307f\u540c\u671f\u306f\u3001ISR\u3067\u5272\u8fbc\u307f\u767a\u751f\u3092xSemaphoreTake()\u3067\u5f85\u3061\u307e\u3059\u3002\u5272\u8fbc\u307f\u767a\u751f\u6642\u3001\u30cf\u30f3\u30c9\u30e9\u30fc\u3067\u5272\u8fbc\u307f\u30d5\u30e9\u30b0\u30af\u30ea\u30a2\u306a\u3069\u306e\u51e6\u7406\u5f8c\u3001xSemaphoreGiveFromISR()\u3067\u52d5\u4f5c\u8a31\u53ef\uff08\u56f3\u8d64\u4e38\uff09\u3092\u4e0e\u3048\u307e\u3059\u3002\u3053\u306e\u52d5\u4f5c\u8a31\u53ef\u306b\u3088\u308aISR\u306exSemaphoreTake()\u4ee5\u964d\u306e\u5272\u308a\u8fbc\u307f\u51e6\u7406\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u304c\u5272\u8fbc\u307f\u540c\u671f\u306e\u5b9f\u73fe\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n

ISR\u51e6\u7406\u5f8c\u3001\u52d5\u4f5c\u8a31\u53ef\u306f\u6d88\u3048\u307e\u3059\u3002\u518d\u3073\u30cf\u30f3\u30c9\u30e9\u30fc\u304c\u52d5\u4f5c\u8a31\u53ef\u3092\u751f\u6210\u3059\u308b\u307e\u3067ISR\u306fSuspended\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

Mutex\uff1a\u30df\u30e5\u30fc\u30c6\u30a3\u30c3\u30af\u30b9\u306b\u3088\u308b\u6392\u4ed6\u5236\u5fa1<\/span><\/h2>\n

FreeRTOS\u306eMutex\uff1a\u30df\u30e5\u30fc\u30c6\u30a3\u30c3\u30af\u30b9\u6392\u4ed6\u5236\u5fa1\u3092\u56f3\u793a\u3057\u307e\u3059\u3002<\/p>\n

\"FreeRTOS
FreeRTOS Mutex<\/figcaption><\/figure>\n

\u30df\u30e5\u30fc\u30c6\u30a3\u30c3\u30af\u30b9\u306e\u5834\u5408\u306f\u3001\u30bb\u30de\u30d5\u30a9\u3068\u7570\u306a\u308a\u521d\u3081\u304b\u3089\u52d5\u4f5c\u8a31\u53ef\uff08\u56f3\u8d64\u4e38\uff09\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u52d5\u4f5c\u8a31\u53ef\u3092\u521d\u3081\u306bTake\u3057\u305f\u30bf\u30b9\u30afA\u306e\u307f\u304c\u5171\u6709\u30ea\u30bd\u30fc\u30b9\u3078\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002\u30bf\u30b9\u30afA\u306e\u30a2\u30af\u30bb\u30b9\u4e2d\u306f\u3001\u52d5\u4f5c\u8a31\u53ef\u304c\u306a\u3044\u30bf\u30b9\u30afB\u306fxSemaphoreTake()\u3067Suspended\u306b\u306a\u308a\u307e\u3059\u3002\u30bf\u30b9\u30afA\u306e\u30a2\u30af\u30bb\u30b9\u7d42\u4e86\u5f8c\u3001\u52d5\u4f5c\u8a31\u53ef\u3092xSemaphoreGive()\u3067\u653e\u68c4\u3059\u308b\u306e\u3067\u3001\u4eca\u5ea6\u306f\u30bf\u30b9\u30afB\u304c\u5171\u6709\u30ea\u30bd\u30fc\u30b9\u3078\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u304c\u6392\u4ed6\u5236\u5fa1\u306e\u5b9f\u73fe\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n

\u3064\u307e\u308a\u3001\u52d5\u4f5c\u306e\u8a31\u53ef\u3092\u793a\u3059\u30d0\u30a4\u30ca\u30ea\u30bb\u30de\u30d5\u30a9\u3092\u540c\u671f\u3067\u4f7f\u3046\u6642\u306f\u30bb\u30de\u30d5\u30a9\u3001\u6392\u4ed6\u5236\u5fa1\u3067\u4f7f\u3046\u6642\u306f\u30df\u30e5\u30fc\u30c6\u30a3\u30c3\u30af\u30b9\u3068\u547c\u3076\u3060\u3051\u3067\u3001\u4f7f\u7528\u3059\u308bAPI\u306f\u3001\u3069\u3061\u3089\u3082xSemaphoreGive()\u3068xSemaphoreTake()\u3067\u3059\u3002
\n\u9055\u3044\u306f\u3001\u30bb\u30de\u30d5\u30a9\u540c\u671f\u306evSemaphoreCreateBinary()\u3067\u306f\u3001\u521d\u671f\u5024\uff1a\u52d5\u4f5c\u8a31\u53ef\u304c\u7121\u3044\u3053\u3068\u3001\u30df\u30e5\u30fc\u30c6\u30a3\u30c3\u30af\u30b9\u6392\u4ed6\u5236\u5fa1\u306exSemaphoreCreateMutex()\u3067\u306f\u3001\u521d\u671f\u5024\uff1a\u52d5\u4f5c\u8a31\u53ef\u304c\u6709\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n

\u307e\u3068\u3081<\/span><\/h2>\n

FreeRTOS\u306e\u30bf\u30b9\u30af\u9593\u30c7\u30fc\u30bf\u901a\u4fe1\u3001\u540c\u671f\u3001\u6392\u4ed6\u5236\u5fa1\u306e\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u5f85\u3061\u306e\u5236\u5fa1\u306f\u3001\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u30fc\u306e\u30bf\u30b9\u30af\u7ba1\u7406Suspended\u304c\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/p>\n

\u30c7\u30fc\u30bf\u901a\u4fe1\u306f\u3001Queue\uff1a\u30ad\u30e5\u30fc\u4f5c\u6210\u5f8c\u3001\u3053\u306e\u30ad\u30e5\u30fc\u3078\u30bf\u30b9\u30af\u304b\u3089\u30c7\u30fc\u30bfSend\/Receive\u3068\u3044\u3046\u901a\u4fe1\u3067\u5b9f\u73fe\u3057\u307e\u3059\u3002\u540c\u671f\u3068\u6392\u4ed6\u5236\u5fa1\u306f\u3001Semaphore\uff1a\u30bb\u30de\u30d5\u30a9\u4f5c\u6210\u5f8c\u3001\u3053\u306e\u30bb\u30de\u30d5\u30a9\u3078\u30bf\u30b9\u30af\u304b\u3089\u52d5\u4f5c\u8a31\u53efGive\/Take\u306b\u3088\u308a\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/p>\n

\u30bf\u30b9\u30af\u5074\u306e\u8a18\u8ff0\u306f\u3001\u30c7\u30fc\u30bf\u306e\u30ad\u30e5\u30fcSend\/Receive\u3001\u30bb\u30de\u30d5\u30a9\u306e\u52d5\u4f5c\u8a31\u53efGive\/Take\u3068\u3044\u3046\u5358\u7d14\u306aFreeRTOS\u306eAPI\u306e\u307f\u3067\u826f\u304f\u3001\u95a2\u4fc2\u30bf\u30b9\u30af\u306e\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u5373Running\u306b\u3059\u308b\u304b\u3001\u3042\u308b\u3044\u306fSuspended\u2192Ready\u2192Running\u306b\u3059\u308b\u304b\u306e\u9762\u5012\u306a\u5236\u5fa1\u306f\u3001\u5168\u3066RTOS\u5074\u304c\u884c\u3044\u307e\u3059\u3002\u5f93\u3063\u3066\u3001\u30e6\u30fc\u30b6\u30bf\u30b9\u30af\u306f\u3001\u5fc5\u8981\u51e6\u7406\u306e\u7c21\u5358\u8a18\u8ff0\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u4eca\u56de\u767b\u5834\u3057\u305fFreeRTOS\u306eAPI\u304c\u4ee5\u4e0b\u3067\u3059\u3002<\/p>\n

\u30ad\u30e5\u30fc\u30c7\u30fc\u30bf\u901a\u4fe1\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u3000\u3000 xQueueCreate()\u3001xQueueSend()\u3001xQueueReceive()
\n\u30bb\u30de\u30d5\u30a9\u540c\u671f\uff1a\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u3000\u3000xSemaphoreCreateBinary()\u3001xSemaphoreGiveFromISR()\u3001xSemaphoreTake()
\n\u30df\u30e5\u30fc\u30c6\u30a3\u30c3\u30af\u30b9\u6392\u4ed6\u5236\u5fa1\uff1axSemaphoreCreateMutex()\u3001xSemaphoreGive()\u3001xSemaphoreTake()<\/p>\n

\u4e0a\u8a18\u3068\u3001\u7b2c2\u56de\u3067\u793a\u3057\u305fFreeRTOS\u306eAPI\u3068\u3092\u52a0\u3048\u3066\u308220\u500b\u5f31\u306eAPI\u3067FreeRTOS\u304c\u4f7f\u3048\u307e\u3059\u3002\u3053\u308c\u3089\u306eAPI\u3068FreeRTOS\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u30fc\u3092\u7406\u89e3\u3057\u3066\u3044\u308c\u3070\u3001FreeRTOS\u4ee5\u5916\u3067\u3082\u614c\u3066\u305a\u306bRTOS\u30bd\u30d5\u30c8\u958b\u767a\u306b\u7740\u624b\u3067\u304d\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

\u6700\u7d42\u56de\u306e\u6b21\u56de\u306f\u3001\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\uff0b\u8a55\u4fa1\u30dc\u30fc\u30c9\u306e\u958b\u767a\u74b0\u5883\u306b\u52dd\u308b\u89e3\u8aac\u66f8\u306f\u306a\u3044\u3001\u3068\u3044\u3046\u8a71\u3092\u3059\u308b\u4e88\u5b9a\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5404\u30bf\u30b9\u30af\u304c\u72ec\u7acb\uff1d\u30d0\u30e9\u30d0\u30e9\u3067\u52d5\u4f5c\u3059\u308b\u5834\u5408\u306b\u306f\u3001\u7b2c\uff12\u56de\u306b\u793a\u3057\u305f\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u30fc\u306eRun Read More …<\/a><\/p>\n","protected":false},"author":1,"featured_media":3722,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,62,29,31],"tags":[25,27,30,53,32,33,45,49,50,117,120,121,122,123,26],"class_list":["post-3739","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mcu","category-lpc-mcu","category-cortex-m0puls-core","category-cortex-m0-core","tag-lpc81x","tag-arm","tag-cortex-m0","tag-cortex-m0puls","tag-lpc111x","tag-lpc1114","tag-iot-mcu","tag-lpc824","tag-lpc82x","tag-rtos","tag-task","tag-communication","tag-semaphore","tag-mutex","tag-lpc8xx"],"yoast_head":"\nRTOS\u3078\u306e\u5099\u3048\uff1a\u7b2c3\u56de\u3001\u30bf\u30b9\u30af\u9593\u30c7\u30fc\u30bf\u901a\u77e5\u3001\u540c\u671f\u3001\u6392\u4ed6\u5236\u5fa1 - 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