{"id":44,"date":"2022-04-30T09:22:20","date_gmt":"2022-04-30T01:22:20","guid":{"rendered":"https:\/\/www.weiqs.cn\/blog\/?p=44"},"modified":"2022-04-30T09:46:50","modified_gmt":"2022-04-30T01:46:50","slug":"freertos","status":"publish","type":"post","link":"https:\/\/www.weiqs.cn\/blog\/index.php\/2022\/04\/30\/freertos\/","title":{"rendered":"FreeRTOS\u4f7f\u7528\u5fc3\u5f97"},"content":{"rendered":"\n

FreeRTOS\u7f16\u7801\u6807\u51c6\u53ca\u98ce\u683c<\/strong><\/p>\n\n\n\n

\u4e00\u4e2a\u4f8b\u5916\u60c5\u51b5\u662f\u5934\u6587\u4ef6stdint.h\u3002\u5728\u6587\u4ef6\u5939FreeRTOS\/Source\/includest\u4e0b\u5305\u542b\u4e00\u4e2adint.readme\u7684\u6587\u4ef6\uff0c\u5982\u679c\u4f60\u7684\u7f16\u8bd1\u5668
\u4e0d\u63d0\u4f9bstdint\u7c7b\u578b\u5b9a\u4e49\uff0c\u53ef\u4ee5\u5c06stdint.readme\u6587\u4ef6\u91cd\u547d\u540d\u4e3astdint.h\u3002<\/p>\n\n\n\n

1> \u53d8\u91cf\u547d\u540d\u89c4\u5219
uint32_t \u4f7f\u7528\u524d\u7f00ul\uff0c u\u8868\u793aunsigned\uff0cl\u8868\u793along ul==uint32_t
uint16_t \u4f7f\u7528\u524d\u7f00us\uff0c u\u8868\u793aunsigned\uff0cs\u8868\u793ashort us==uint16_t
uint8_t \u4f7f\u7528\u524d\u7f00uc\uff0c u\u8868\u793aunsigned\uff0cc\u8868\u793achar uc==uint8_t
\u975estdint \u53d8\u91cf\u4f7f\u7528\u524d\u7f00x, \u5982Type_t\u548cTickType_t\u7c7b\u578b
\u975estdint \u65e0\u7b26\u53f7\u53d8\u91cf\u4f7f\u7528\u524d\u7f00ux\uff0c\u5982UbaseType_t\uff08unsigned BaseType_t\uff09
size_t \u7c7b\u578b\u7684\u53d8\u91cf\u4f7f\u7528\u524d\u7f00x\uff1b
\u679a\u4e3e\u7c7b\u578b\u53d8\u91cf\u4f7f\u7528\u524d\u7f00e
\u6307\u9488\u7c7b\u578b\u53d8\u91cf\u5728\u7c7b\u578b\u57fa\u7840\u4e0a\u9644\u52a0\u524d\u7f00p\uff0c\u5982\u6307\u5411uint16_t\u7684\u6307\u9488\u53d8\u91cf\u524d\u7f00\u4e3apus (p_uint16_t)
char \u7c7b\u578b\u53d8\u91cf\u4ec5\u88ab\u5141\u8bb8\u4fdd\u5b58ASCII\u5b57\u7b26\uff0c\u524d\u7f00\u4e3ac
char* \u7c7b\u578b\u53d8\u91cf\u4ec5\u5141\u8bb8\u6307\u5411ASCII\u5b57\u7b26\u4e32\uff0c\u524d\u7f00\u4e3apc<\/p>\n\n\n\n

2> \u51fd\u6570\u547d\u540d\u89c4\u5219
\u5728\u6587\u4ef6\u4f5c\u7528\u57df\u8303\u56f4\u7684\u51fd\u6570\u524d\u7f00\u4e3aprv
API\u51fd\u6570\u7684\u524d\u7f00\u4e3a\u5b83\u4eec\u7684\u8fd4\u56de\u7c7b\u578b\uff0c\u5f53\u8fd4\u56de\u4e3a\u7a7a\u65f6\uff0c\u524d\u7f00\u4e3av<\/p>\n\n\n\n

3> \u5b8f\u547d\u540d\u89c4\u5219
\u5b8f\u7684\u540d\u5b57\u8d77\u59cb\u90e8\u5206\u4e3a\u8be5\u5b8f\u5b9a\u4e49\u6240\u5728\u7684\u6587\u4ef6\u540d\u7684\u4e00\u90e8\u5206\u3002\u6bd4\u5982configUSE_PREEMPTION\u5b9a\u4e49\u5728FreeRTOSConfig.h\u6587\u4ef6\u4e2d\u3002
\u9664\u4e86\u524d\u7f00\uff0c\u5b8f\u5269\u4e0b\u7684\u5b57\u6bcd\u5168\u90e8\u4e3a\u5927\u5199\uff0c\u4e24\u4e2a\u5355\u8bcd\u95f4\u7528\u4e0b\u5212\u7ebf\uff08\u2019_\u2019\uff09\u9694\u5f00\u3002<\/p>\n\n\n\n

\u6570\u636e\u7c7b\u578b
\u53ea\u6709stdint.h\u548cRTOS\u81ea\u5df1\u5b9a\u4e49\u7684\u6570\u636e\u7c7b\u578b\u53ef\u4ee5\u4f7f\u7528\uff0c\u4f46\u4e5f\u6709\u4f8b\u5916\u60c5\u51b5\uff0c\u5982\u4e0b\u6240\u793a\uff1a
\u6709\u4e09\u79cd\u7c7b\u578b\u4f1a\u5728\u79fb\u690d\u5c42\u5b9a\u4e49\uff0c\u5b83\u4eec\u662f\uff1a<\/p>\n\n\n\n

TickType_t\uff1aconfigUSE_16_BIT_TICKS=1\uff0cTickType_t\u5b9a\u4e49\u4e3a\u65e0\u7b26\u53f716\u4f4d\u7c7b\u578b
configUSE_16_BIT_TICKS=0\uff0cTickType_t\u5b9a\u4e49\u4e3a\u65e0\u7b26\u53f732\u4f4d\u7c7b\u578b<\/p>\n\n\n\n

BaseType_t\uff1a\u5b9a\u4e49\u4e3a\u5fae\u5904\u7406\u5668\u67b6\u6784\u6548\u7387\u6700\u9ad8\u7684\u6570\u636e\u7c7b\u578b\u3002\u572832\u4f4d\u67b6\u6784\u5904\u7406\u5668\u4e0aBaseType_t\u5e94\u8be5\u5b9a\u4e49\u4e3a32\u4f4d\u7c7b\u578b\u3002
\u572816\u4f4d\u67b6\u6784\u5904\u7406\u5668\u4e0a\uff0cBaseType_t\u5e94\u8be5\u5b9a\u4e49\u4e3a16\u4f4d\u7c7b\u578b\u3002
BaseType_t\u5b9a\u4e49\u4e3achar\uff0c\u5bf9\u4e8e\u51fd\u6570\u8fd4\u56de\u503c\u4e00\u5b9a\u8981\u786e\u4fdd\u4f7f\u7528\u7684\u662fsigned char\uff0c\u5426\u5219\u53ef\u80fd\u9020\u6210\u8d1f\u6570\u9519\u8bef\u3002<\/p>\n\n\n\n

UbaseType_t\uff1a\u4e00\u4e2a\u65e0\u7b26\u53f7BaseType_t\u7c7b\u578b<\/p>\n\n\n\n

\u603b\u7ed3\uff1a ul==uint32_t\uff0c us==uint16_t\uff0c uc==uint8_t
UbaseType_t==uint32_t\uff0832\u4f4d\u67b6\u6784\u5904\u7406\u5668\uff09, UbseType_t==uint16_t\uff0816\u67b6\u6784\u5904\u7406\u5668\uff09\uff0c\u8ddf\u5904\u7406\u5668\u67b6\u6784\u6709\u5173\uff01<\/p>\n\n\n\n

typedef portSTACK_TYPE StackType_t;
#define portSTACK_TYPE uint32_t<\/p>\n\n\n\n

TaskFunction_t == typedef void (*TaskFunction_t)(void *);<\/p>\n\n\n\n

StackType_t *pxStack; \/\/\u6307\u5806\u6808\u6df1\u5ea6
pxStack = (StackType_t *) pvPortMalloc( ( ( (size_t) usStackDepth) * sizeof(StackType_t) ) );<\/p>\n\n\n\n

\/\/ \u600e\u4e48\u67e5\u770b\u4efb\u52a1\u7684\u5f53\u524d\u8fd0\u884c\u72b6\u6001<\/strong>
uxTaskPriorityGet()\uff1a\u67e5\u8be2\u67d0\u4e2a\u4efb\u52a1\u7684\u4f18\u5148\u7ea7
vTaskPrioritySet()\uff1a\u6539\u53d8\u67d0\u4e2a\u4efb\u52a1\u7684\u4efb\u52a1\u4f18\u5148\u7ea7
uxTaskGetSystemState()\uff1a\u83b7\u53d6\u7cfb\u7edf\u4e2d\u4efb\u52a1\u72b6\u6001
vTaskGetInfo()\uff1a\u83b7\u53d6\u67d0\u4e2a\u4efb\u52a1\u4fe1\u606f
xTaskGetApplicationTaskTag()\uff1a\u83b7\u53d6\u67d0\u4e2a\u4efb\u52a1\u7684\u6807\u7b7e(Tag)\u503c
xTaskGetCurrentTaskHandle()\uff1a\u83b7\u53d6\u5f53\u524d\u6b63\u5728\u8fd0\u884c\u7684\u4efb\u52a1\u7684\u4efb\u52a1\u53e5\u67c4
xTaskGetHandle()\uff1a\u6839\u636e\u4efb\u52a1\u540d\u5b57\u67e5\u627e\u67d0\u4e2a\u4efb\u52a1\u7684\u53e5\u67c4
xTaskGetIdleTaskHandle()\uff1a\u83b7\u53d6\u7a7a\u95f2\u4efb\u52a1\u7684\u4efb\u52a1\u53e5\u67c4
uxTaskGetStackHighWaterMark()\uff1a\u83b7\u53d6\u4efb\u52a1\u7684\u5806\u6808\u7684\u5386\u53f2\u5269\u4f59\u6700\u5c0f\u503c\uff0cFreeRTOS \u4e2d\u53eb\u505a\u201c\u9ad8\u6c34\u4f4d\u7ebf\u201d
eTaskGetState()\uff1a\u83b7\u53d6\u67d0\u4e2a\u4efb\u52a1\u7684\u58ee\u6001\uff0c\u8fd9\u4e2a\u58ee\u6001\u662f eTaskState \u7c7b\u578b *
pcTaskGetName()\uff1a\u83b7\u53d6\u67d0\u4e2a\u4efb\u52a1\u7684\u4efb\u52a1\u540d\u5b57
xTaskGetTickCount()\uff1a\u83b7\u53d6\u7cfb\u7edf\u65f6\u95f4\u8ba1\u6570\u5668\u503c
xTaskGetTickCountFromISR()\uff1a\u5728\u4e2d\u65ad\u670d\u52a1\u51fd\u6570\u4e2d\u83b7\u53d6\u65f6\u95f4\u8ba1\u6570\u5668\u503c
xTaskGetSchedulerState()\uff1a\u83b7\u53d6\u4efb\u52a1\u8c03\u5ea6\u5668\u7684\u58ee\u6001\uff0c\u5f00\u542f\u6216\u672a\u5f00\u542f
uxTaskGetNumberOfTasks()\uff1a\u83b7\u53d6\u5f53\u524d\u7cfb\u7edf\u4e2d\u5b58\u5728\u7684\u4efb\u52a1\u6570\u91cf
vTaskList()\uff1a\u4ee5\u4e00\u79cd\u8868\u683c\u7684\u5f62\u5f0f\u8f93\u51fa\u5f53\u524d\u7cfb\u7edf\u4e2d\u6240\u6709\u4efb\u52a1\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u6bcf\u4e2a\u4efb\u52a1\u5927\u7ea6\u9700\u898140\u4e2a\u5b57\u8282\u3002
vTaskGetRunTimeStats()\uff1a\u83b7\u53d6\u6bcf\u4e2a\u4efb\u52a1\u7684\u8fd0\u884c\u65f6\u95f4
vTaskSetApplicationTaskTag()\uff1a\u8bbe\u7f6e\u4efb\u52a1\u6807\u7b7e(Tag)\u503c
SetThreadLocalStoragePointer()\uff1a\u8bbe\u7f6e\u7ebf\u7a0b\u672c\u5730\u5b58\u50a8\u6307\u9488
GetThreadLocalStoragePointer()\uff1a\u83b7\u53d6\u7ebf\u7a0b\u672c\u5730\u5b58\u50a8\u6307\u9488<\/p>\n\n\n\n

\/\/ \u98ce\u683c\u6307\u5357<\/strong><\/p>\n\n\n\n