can data padding optimization

irvingywang · irvingywang · commit 21bce3cf12e6 · 2026-01-23T18:45:17.000-05:00
diff --git a/common/can_library/canpiler/templates/bus_header.h.jinja b/common/can_library/canpiler/templates/bus_header.h.jinja
@@ -19,10 +19,12 @@ static constexpr uint8_t  {{ msg.macro_name }}_DLC = {{ msg.dlc }};
 static constexpr uint32_t {{ msg.macro_name }}_PERIOD_MS = {{ msg.period }};
 
 typedef struct {
+    uint32_t last_rx;
+    // Begin signal defs
 {% for sig in msg.signals %}
     {{ sig.c_type }} {{ sig.name }};
 {% endfor %}
-    uint32_t last_rx;
+    // End signal defs
     bool stale;
 } {{ msg.name }}_data_t;
 
diff --git a/common/can_library/canpiler/templates/node_header.h.jinja b/common/can_library/canpiler/templates/node_header.h.jinja
@@ -26,7 +26,7 @@
 {% endif %}
 
 // System Version: {{ context.version }}
-static constexpr uint64_t GIT_HASH = 0x{{ context.version }};
+static constexpr uint32_t GIT_HASH = 0x{{ context.version }};
 
 // Peripheral Configuration
 static constexpr uint8_t NUM_CAN_PERIPHERALS = {{ peripherals|length }};
diff --git a/common/can_library/configs/nodes/A_BOX.json b/common/can_library/configs/nodes/A_BOX.json
@@ -491,7 +491,7 @@
                     "signals": [
                         {
                             "sig_name": "git_hash",
-                            "type": "uint64_t",
+                            "type": "uint32_t",
                             "sig_desc": "int representation of git short hash"
                         }
                     ],
diff --git a/common/can_library/configs/nodes/DAQ.json b/common/can_library/configs/nodes/DAQ.json
@@ -68,7 +68,7 @@
                     "signals": [
                         {
                             "sig_name": "git_hash",
-                            "type": "uint64_t",
+                            "type": "uint32_t",
                             "sig_desc": "int representation of git short hash"
                         }
                     ],
diff --git a/common/can_library/configs/nodes/DASHBOARD.json b/common/can_library/configs/nodes/DASHBOARD.json
@@ -285,7 +285,7 @@
                     "signals": [
                         {
                             "sig_name": "git_hash",
-                            "type": "uint64_t",
+                            "type": "uint32_t",
                             "sig_desc": "int representation of git short hash"
                         }
                     ],
diff --git a/common/can_library/configs/nodes/MAIN_MODULE.json b/common/can_library/configs/nodes/MAIN_MODULE.json
@@ -643,7 +643,7 @@
                     "signals": [
                         {
                             "sig_name": "git_hash",
-                            "type": "uint64_t",
+                            "type": "uint32_t",
                             "sig_desc": "int representation of git short hash"
                         }
                     ],
diff --git a/common/can_library/configs/nodes/PDU.json b/common/can_library/configs/nodes/PDU.json
@@ -232,7 +232,7 @@
                     "signals": [
                         {
                             "sig_name": "git_hash",
-                            "type": "uint64_t",
+                            "type": "uint32_t",
                             "sig_desc": "int representation of git short hash"
                         }
                     ],
diff --git a/common/can_library/configs/nodes/TORQUE_VECTOR.json b/common/can_library/configs/nodes/TORQUE_VECTOR.json
@@ -289,7 +289,7 @@
                     "signals": [
                         {
                             "sig_name": "git_hash",
-                            "type": "uint64_t",
+                            "type": "uint32_t",
                             "sig_desc": "int representation of git short hash"
                         }
                     ],

Original file line number	Diff line number	Diff line change
`@@ -491,7 +491,7 @@`
`491`	`491`	`"signals": [`
`492`	`492`	`{`
`493`	`493`	`"sig_name": "git_hash",`
`494`		`- "type": "uint64_t",`
	`494`	`+ "type": "uint32_t",`
`495`	`495`	`"sig_desc": "int representation of git short hash"`
`496`	`496`	`}`
`497`	`497`	`],`
Original file line number	Diff line number	Diff line change
`@@ -68,7 +68,7 @@`
`68`	`68`	`"signals": [`
`69`	`69`	`{`
`70`	`70`	`"sig_name": "git_hash",`
`71`		`- "type": "uint64_t",`
	`71`	`+ "type": "uint32_t",`
`72`	`72`	`"sig_desc": "int representation of git short hash"`
`73`	`73`	`}`
`74`	`74`	`],`
Original file line number	Diff line number	Diff line change
`@@ -285,7 +285,7 @@`
`285`	`285`	`"signals": [`
`286`	`286`	`{`
`287`	`287`	`"sig_name": "git_hash",`
`288`		`- "type": "uint64_t",`
	`288`	`+ "type": "uint32_t",`
`289`	`289`	`"sig_desc": "int representation of git short hash"`
`290`	`290`	`}`
`291`	`291`	`],`
Original file line number	Diff line number	Diff line change
`@@ -643,7 +643,7 @@`
`643`	`643`	`"signals": [`
`644`	`644`	`{`
`645`	`645`	`"sig_name": "git_hash",`
`646`		`- "type": "uint64_t",`
	`646`	`+ "type": "uint32_t",`
`647`	`647`	`"sig_desc": "int representation of git short hash"`
`648`	`648`	`}`
`649`	`649`	`],`
Original file line number	Diff line number	Diff line change
`@@ -232,7 +232,7 @@`
`232`	`232`	`"signals": [`
`233`	`233`	`{`
`234`	`234`	`"sig_name": "git_hash",`
`235`		`- "type": "uint64_t",`
	`235`	`+ "type": "uint32_t",`
`236`	`236`	`"sig_desc": "int representation of git short hash"`
`237`	`237`	`}`
`238`	`238`	`],`
Original file line number	Diff line number	Diff line change
`@@ -289,7 +289,7 @@`
`289`	`289`	`"signals": [`
`290`	`290`	`{`
`291`	`291`	`"sig_name": "git_hash",`
`292`		`- "type": "uint64_t",`
	`292`	`+ "type": "uint32_t",`
`293`	`293`	`"sig_desc": "int representation of git short hash"`
`294`	`294`	`}`
`295`	`295`	`],`