re-add satrs-core without git submoudule

satrs-core/src/error.rs

@@ -0,0 +1,49 @@
+pub enum FsrcGroupIds {
+    Tmtc = 0,
+}
+
+pub struct FsrcErrorRaw {
+    pub group_id: u8,
+    pub unique_id: u8,
+    pub group_name: &'static str,
+    pub info: &'static str,
+}
+
+pub trait FsrcErrorHandler {
+    fn error(&mut self, e: FsrcErrorRaw);
+    fn error_with_one_param(&mut self, e: FsrcErrorRaw, _p1: u32) {
+        self.error(e);
+    }
+    fn error_with_two_params(&mut self, e: FsrcErrorRaw, _p1: u32, _p2: u32) {
+        self.error(e);
+    }
+}
+
+impl FsrcErrorRaw {
+    pub const fn new(
+        group_id: u8,
+        unique_id: u8,
+        group_name: &'static str,
+        info: &'static str,
+    ) -> Self {
+        FsrcErrorRaw {
+            group_id,
+            unique_id,
+            group_name,
+            info,
+        }
+    }
+}
+
+#[derive(Clone, Copy, Default)]
+pub struct SimpleStdErrorHandler {}
+
+#[cfg(feature = "use_std")]
+impl FsrcErrorHandler for SimpleStdErrorHandler {
+    fn error(&mut self, e: FsrcErrorRaw) {
+        println!(
+            "Received error from group {} with ID ({},{}): {}",
+            e.group_name, e.group_id, e.unique_id, e.info
+        );
+    }
+}