add node and general comments to gen_dbc

oresat_configs/scripts/gen_dbc.py

@@ -5,7 +5,7 @@
 
 from canopen.objectdictionary import REAL32, REAL64, UNSIGNED_TYPES, Variable
 
-from .. import Consts, OreSatConfig
+from .. import Consts, OreSatConfig, __version__
 
 GEN_DBC = "generate dbc file for SavvyCAN"
 
@@ -156,8 +156,7 @@ def write_dbc(config: OreSatConfig, dir_path: str = "."):
         file_path = file_name
 
     lines: list[str] = [
-        'VERSION ""',
-        "",
+        f'VERSION "{__version__}"',
         "",
         "NS_ :",
         f"{INDENT4}NS_DESC_",
@@ -189,24 +188,34 @@ def write_dbc(config: OreSatConfig, dir_path: str = "."):
         f"{INDENT4}BU_BO_REL_",
         f"{INDENT4}SG_MUL_VAL_",
         "",
-        "BS_: ",
+        "BS_: 1000",  # bus speed in kbps
+        "",
     ]
 
     # list of cards
     cards = config.cards
     lines.append("BU_: " + " ".join(cards) + " ")
+    lines.append("")
+
+    # general comments
+    lines.append(f'CM_: "{config.mission}"')
+    lines.append('CM_: "Generated by oresat-config from https://github.com/oresat/oreast-configs"')
+    lines.append("")
 
     # SYNC
     lines.append(f"BO_ {0x80} sync: 0 c3")
     lines.append("")
 
     enums: list[tuple[int, str, dict[int, str]]] = []
-    comments: list[tuple[int, str, str]] = []
+    signal_comments: list[tuple[int, str, str]] = []
+    node_comments: list[tuple[int, str]] = []
     floats: list[tuple[int, str, int]] = []
     for name, od in config.od_db.items():
         if name not in cards:
             continue
 
+        node_comments.append((od.node_id, od.device_information.product_name))
+
         # EMCYs
         cob_id = 0x80 + od.node_id
         lines.append(f"BO_ {cob_id} {name}_emcy: 8 {name}")
@@ -265,7 +274,7 @@ def write_dbc(config: OreSatConfig, dir_path: str = "."):
                     )
 
                     if obj.description:
-                        comments.append((cob_id, signal, obj.description))
+                        signal_comments.append((cob_id, signal, obj.description))
 
                     if obj.data_type == REAL32:
                         floats.append((cob_id, signal, 1))
@@ -358,15 +367,23 @@ def write_dbc(config: OreSatConfig, dir_path: str = "."):
         lines.append(f'{INDENT3}SG_ hearbeat : 0|8@1+ (1,0) [0|0] "" c3')
         enums.append((cob_id, "hearbeat", CANOPEN_STATES))
         lines.append("")
+    lines.append("")
+
+    # node comments
+    for node_id, desc in node_comments:
+        lines.append(f'CM_ BU_ {node_id} "{desc}";')
+    lines.append("")
 
     # signal comments
-    for cob_id, signal, desc in comments:
+    for cob_id, signal, desc in signal_comments:
         lines.append(f'CM_ SG_ {cob_id} {signal} "{desc}";')
+    lines.append("")
 
     # signal enums
     for cob_id, signal, value_defs in enums:
         values = " ".join(f'{v} "{n}"' for v, n in value_defs.items())
         lines.append(f"VAL_ {cob_id} {signal} {values};")
+    lines.append("")
 
     # signal floats
     for cob_id, signal, value in floats: