1 #![allow(dead_code)] 2 3 use crate::driver::timers::rtc::rtc::RtcTime; 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: RtcTime = RtcTime::default(); 19 20 { 21 let r = rtc_time.get(); 22 // 返回错误码 23 if r.is_err() { 24 return r.unwrap_err() as ktime_t; 25 } 26 } 27 28 let mut day_count: i32 = 0; 29 for year in 1970..rtc_time.year { 30 let leap: bool = (year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0); 31 if leap { 32 day_count += 366; 33 } else { 34 day_count += 365; 35 } 36 } 37 for month in 1..rtc_time.month { 38 match month { 39 1 | 3 | 5 | 7 | 8 | 10 | 12 => day_count += 31, 40 2 => day_count += 28, 41 4 | 6 | 9 | 11 => day_count += 30, 42 _ => day_count += 0, 43 } 44 } 45 46 day_count += rtc_time.day - 1; 47 //转换成纳秒 48 let timestamp: ktime_t = day_count as i64 * 86_400_000_000_000i64 49 + (rtc_time.hour - 8) as i64 * 3_600_000_000_000i64 50 + rtc_time.minute as i64 * 60_000_000_000i64 51 + rtc_time.second as i64 * 1_000_000_000u64 as ktime_t; 52 53 return timestamp; 54 } 55 56 /// @brief 暴露给外部使用的接口，返回一个时间戳 57 #[inline] 58 pub fn ktime_get_real_ns() -> i64 { 59 let kt: ktime_t = ktime_get_real(); 60 return ktime_to_ns(kt); 61 } 62