1 #![allow(dead_code)] 2 use crate::include::bindings::bindings::{rtc_get_cmos_time, rtc_time_t}; 3 4 #[allow(non_camel_case_types)] 5 pub type ktime_t = i64; 6 7 // @brief 将ktime_t类型转换为纳秒类型 8 #[inline] 9 fn ktime_to_ns(kt: ktime_t) -> i64 { 10 return kt as i64; 11 } 12 13 /// @brief 从RTC获取当前时间，然后计算时间戳。 14 /// 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。 15 /// 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 16 fn ktime_get_real() -> ktime_t { 17 let mut rtc_time: rtc_time_t = rtc_time_t { 18 second: (0), 19 minute: (0), 20 hour: (0), 21 day: (0), 22 month: (0), 23 year: (0), 24 }; 25 26 unsafe { 27 //调用rtc.h里面的函数 28 rtc_get_cmos_time(&mut rtc_time); 29 } 30 31 let mut day_count: i32 = 0; 32 for year in 1970..rtc_time.year { 33 let leap: bool = (year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0); 34 if leap { 35 day_count += 366; 36 } else { 37 day_count += 365; 38 } 39 //println!("{},{}",year,day_count); 40 } 41 //println!("day count1: {}",day_count); 42 for month in 1..rtc_time.month { 43 match month { 44 1 | 3 | 5 | 7 | 8 | 10 | 12 => day_count += 31, 45 2 => day_count += 28, 46 4 | 6 | 9 | 11 => day_count += 30, 47 _ => day_count += 0, 48 } 49 //println!("{}:{}",month,day_count); 50 } 51 52 day_count += rtc_time.day - 1; 53 //println!("day count2: {}",day_count); 54 //转换成纳秒 55 let timestamp: ktime_t = day_count as i64 * 86_400_000_000_000i64 56 + (rtc_time.hour - 8) as i64 * 3_600_000_000_000i64 57 + rtc_time.minute as i64 * 60_000_000_000i64 58 + rtc_time.second as i64 * 1_000_000_000i64 as ktime_t; 59 60 return timestamp; 61 } 62 63 /// @brief 暴露给外部使用的接口，返回一个时间戳 64 #[inline] 65 pub fn ktime_get_real_ns() -> i64 { 66 let kt: ktime_t = ktime_get_real(); 67 return ktime_to_ns(kt); 68 } 69