1 #![allow(dead_code)] 2 3 use crate::driver::timers::rtc::rtc::{rtc_get_cmos_time, rtc_time_t}; 4 5 #[allow(non_camel_case_types)] 6 pub type ktime_t = i64; 7 8 // @brief 将ktime_t类型转换为纳秒类型 9 #[inline] 10 fn ktime_to_ns(kt: ktime_t) -> i64 { 11 return kt as i64; 12 } 13 14 /// @brief 从RTC获取当前时间，然后计算时间戳。 15 /// 时间戳为从UTC+0 1970-01-01 00:00到当前UTC+0时间，所经过的纳秒数。 16 /// 注意，由于当前未引入时区，因此本函数默认时区为UTC+8来计算 17 fn ktime_get_real() -> ktime_t { 18 let mut rtc_time: rtc_time_t = rtc_time_t { 19 second: (0), 20 minute: (0), 21 hour: (0), 22 day: (0), 23 month: (0), 24 year: (0), 25 }; 26 27 //调用rtc.h里面的函数 28 rtc_get_cmos_time(&mut rtc_time); 29 30 let mut day_count: i32 = 0; 31 for year in 1970..rtc_time.year { 32 let leap: bool = (year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0); 33 if leap { 34 day_count += 366; 35 } else { 36 day_count += 365; 37 } 38 } 39 for month in 1..rtc_time.month { 40 match month { 41 1 | 3 | 5 | 7 | 8 | 10 | 12 => day_count += 31, 42 2 => day_count += 28, 43 4 | 6 | 9 | 11 => day_count += 30, 44 _ => day_count += 0, 45 } 46 } 47 48 day_count += rtc_time.day - 1; 49 //转换成纳秒 50 let timestamp: ktime_t = day_count as i64 * 86_400_000_000_000i64 51 + (rtc_time.hour - 8) as i64 * 3_600_000_000_000i64 52 + rtc_time.minute as i64 * 60_000_000_000i64 53 + rtc_time.second as i64 * 1_000_000_000u64 as ktime_t; 54 55 return timestamp; 56 } 57 58 /// @brief 暴露给外部使用的接口，返回一个时间戳 59 #[inline] 60 pub fn ktime_get_real_ns() -> i64 { 61 let kt: ktime_t = ktime_get_real(); 62 return ktime_to_ns(kt); 63 } 64