started cleanup and moving from std to no_std

rust/src/hal/rtc.rs

@@ -52,7 +52,7 @@ impl RTCModuleInteraction for DS3231Module<'_> {
         let (header, len): (BackupHeader, usize) =
             bincode::decode_from_slice(&header_page_buffer[..], CONFIG)?;
 
-        println!("Raw header is {:?} with size {}", header_page_buffer, len);
+        log::info!("Raw header is {:?} with size {}", header_page_buffer, len);
         anyhow::Ok(header)
     }
 
@@ -95,7 +95,7 @@ impl RTCModuleInteraction for DS3231Module<'_> {
         };
         let config = config::standard();
         let encoded = bincode::encode_into_slice(&header, &mut header_page_buffer, config)?;
-        println!(
+        log::info!(
             "Raw header is {:?} with size {}",
             header_page_buffer, encoded
         );