int res=fml_check_timeout(usart_flag_get(usart_tdbe_flag)==0);帮我完成fml_check_timeout这个宏


以下是一个可能的 `fml_check_timeout` 宏的实现示例,假设超时的判断是基于一个给定的时间变量和当前时间的比较: ```c #include <time.h> #define FML_TIMEOUT_THRESHOLD 5 // 假设超时阈值为 5 秒 // 定义一个全局变量来记录起始时间 time_t start_time; // 宏定义 #define fml_check_timeout(condition) ({ \ time_t current_time; \ time(¤t_time); \ if ((current_time - start_time) > FML_TIMEOUT_THRESHOLD && (condition)) { \ return 1; \ } else { \ return 0; \ } \ }) ``` 在实际使用时,您需要在适当的位置初始化 `start_time` 为程序开始的时间。 这只是一个简单的示例,具体的实现应根据您的实际需求和项目上下文进行调整。 [2024-11-16 21:32:42 | AI写代码神器 | 213点数解答]
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