re-add satrs-core without git submoudule

satrs-core/src/tmtc/tm_helper.rs

@@ -0,0 +1,52 @@
+use spacepackets::time::cds::TimeProvider;
+use spacepackets::time::TimeWriter;
+use spacepackets::tm::{PusTm, PusTmSecondaryHeader};
+use spacepackets::SpHeader;
+
+pub struct PusTmWithCdsShortHelper {
+    apid: u16,
+    cds_short_buf: [u8; 7],
+}
+
+impl PusTmWithCdsShortHelper {
+    pub fn new(apid: u16) -> Self {
+        Self {
+            apid,
+            cds_short_buf: [0; 7],
+        }
+    }
+
+    #[cfg(feature = "std")]
+    pub fn create_pus_tm_timestamp_now<'a>(
+        &'a mut self,
+        service: u8,
+        subservice: u8,
+        source_data: Option<&'a [u8]>,
+    ) -> PusTm {
+        let time_stamp = TimeProvider::from_now_with_u16_days().unwrap();
+        time_stamp.write_to_bytes(&mut self.cds_short_buf).unwrap();
+        self.create_pus_tm_common(service, subservice, source_data)
+    }
+
+    pub fn create_pus_tm_with_stamp<'a>(
+        &'a mut self,
+        service: u8,
+        subservice: u8,
+        source_data: Option<&'a [u8]>,
+        stamper: &TimeProvider,
+    ) -> PusTm {
+        stamper.write_to_bytes(&mut self.cds_short_buf).unwrap();
+        self.create_pus_tm_common(service, subservice, source_data)
+    }
+
+    fn create_pus_tm_common<'a>(
+        &'a self,
+        service: u8,
+        subservice: u8,
+        source_data: Option<&'a [u8]>,
+    ) -> PusTm {
+        let mut reply_header = SpHeader::tm_unseg(self.apid, 0, 0).unwrap();
+        let tc_header = PusTmSecondaryHeader::new_simple(service, subservice, &self.cds_short_buf);
+        PusTm::new(&mut reply_header, tc_header, source_data, true)
+    }
+}