2021年12月16日

内核对象类型(rt-thread)
摘要： /** * The object type can be one of the follows with specific * macros enabled: * - Thread * - Process * - Semaphore * - Mutex * - Event * - MailBox * 阅读全文
posted @ 2021-12-16 01:08 lydstory 阅读(20) 评论(0) 推荐(0)
kernel object(rtthread)
摘要： /* date type defination */ typedef signed char rt_int8_t; typedef signed short rt_int16_t; typedef signed long rt_int32_t; typedef unsigned char rt_ui 阅读全文
posted @ 2021-12-16 01:06 lydstory 阅读(66) 评论(0) 推荐(0)
双链表定义
摘要： struct rt_list_node { struct rt_list_node *next; /* point to next node. */ struct rt_list_node *prev; /* point to prev node. */ }; typedef struct rt_l 阅读全文
posted @ 2021-12-16 00:52 lydstory 阅读(22) 评论(0) 推荐(0)
RT_NULL
摘要： #define RT_NULL ((void *)0) int main() { cout << sizeof(RT_NULL) << endl; cout << sizeof(NULL) << endl; system("PAUSE"); return 0; } 阅读全文
posted @ 2021-12-16 00:50 lydstory 阅读(113) 评论(0) 推荐(0)
c语言定义文件函数(实现函数指针）
摘要： struct rt_filesystem_interface { /* file api*/ int(*open)(const char *file, int flags, int mode); int(*close)(int d); }; 阅读全文
posted @ 2021-12-16 00:44 lydstory 阅读(51) 评论(0) 推荐(0)
lpc2478
摘要： lpc2478 电表 eth_device_ready lwip发送数据 ip支持 阅读全文
posted @ 2021-12-16 00:13 lydstory 阅读(30) 评论(0) 推荐(0)
BIT_TEST位检测
摘要： unsigned char BIT_TEST(void *aptr, unsigned char p_nmb) { unsigned char *mem_byte; unsigned char byte_nu, bit_nu, i; mem_byte = (unsigned char *)aptr; 阅读全文
posted @ 2021-12-16 00:06 lydstory 阅读(127) 评论(0) 推荐(0)

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