update doc

Author: frankie-zeng

docs/um/can/can.md

@@ -20,6 +20,16 @@ For demonstration purposes, we'll use a simulated device. You can configure the
 
 ![alt text](image.png)
 
+### Baud Rate Setting
+
+The baud rate setting is used to configure the baud rate of the CAN bus.
+
+Click the `Bit Timing` button to open the bit timing configuration window.
+![alt text](image-8.png)
+![alt text](image-9.png)
+
+
+
 ## Interactive Mode and Node Scripts
 
 EcuBus-Pro offers two primary methods for CAN communication:

docs/um/can/image-8.png

@@ -7,7 +7,18 @@ The Trace window provides an interface for viewing and exporting data. Users can
 >[!INFO]
 > Currently, Trace has a maximum storage capacity of 50,000 entries. When this limit is exceeded, the oldest data will be automatically deleted.
 
-## Supported Receive Filters
+## Filter
+
+### Filter By Device
+The Trace window supports filtering by device, signal name, and signal value.
+> [!NOTE]
+> Selecting all devices or no devices has the same effect.
+
+![alt text](image-3.png)
+
+## Filter By Message Type
+
+![alt text](image-4.png)
 
 * CAN - Receive CAN-related data
 * LIN - Receive LIN-related data

docs/um/can/image-9.png

@@ -39,7 +39,7 @@
         </span>
         <template #dropdown>
           <el-dropdown-menu>
-            <el-checkbox-group v-model="checkList" size="small" style="margin: 10px">
+            <el-checkbox-group v-model="checkList" size="small" style="margin: 10px; width: 150px">
               <el-checkbox
                 v-for="item of LogFilter"
                 :key="item.v"