feat：项目需求，将UUID写入的长度修改位21字节，增加写入长度的判断

Firmware/Source/UDS/UDS_ISO14229_Services.c

@@ -194,7 +194,7 @@ void Data_Read_DiagPara(void)
 {
     uint8_t i;
     Ser2EDFlashData* ReadSer2EDataForDFlash = (Ser2EDFlashData*)0x500600ul; 
-    for ( i = 0; i < 32; i++)
+    for ( i = 0; i < 21; i++)
     {
         Ser2EDataForDFlash.DID_F184[i] = ReadSer2EDataForDFlash->DID_F184[i];
     }
@@ -857,11 +857,11 @@ void UDS_Service_22_Indication(uint16_t A_TA_type, uint16_t A_Length, uint8_t *A
             break;
 
         case 0xF184: // UUID
-            for (i = 0; i < 32; i++)
+            for (i = 0; i < 21; i++)
             {
                 UDS_ISO14229_Transfer[i + 2] = Ser2EDataForDFlash.DID_F184[i];
             }
-            UDS_Service_Response(0x22, POSITIVE_RSP, DIAG_ID_Tx, 2 + 32, UDS_ISO14229_Transfer);
+            UDS_Service_Response(0x22, POSITIVE_RSP, DIAG_ID_Tx, 2 + 21, UDS_ISO14229_Transfer);
             break;
 
         case 0x2024: // ESP32内部版本号
@@ -915,32 +915,39 @@ void UDS_Service_2E_Indication ( uint16_t A_TA_type, uint16_t A_Length, uint8_t
         UDS_ISO14229_Transfer[i] = *(A_Data + i);
     }
     if ( FunorPhy == 0X7DF )
+    {
         return;
-    if ( DiagLockFlag == 0x00 )
+    }
+    
+    if( (SessionType == DefaultSession) || (SessionType == ProgrammingSession))
     {
-        NegRes.code = securityAccessDenied; //NRC33
+        NegRes.code = serviceNotSupportedInActiveSession; //NRC7F
         UDS_Service_Response ( 0x2E, NEGATIVE_RSP, DIAG_ID_Tx, 1, ( uint8_t * ) ( &NegRes.code ) );
         return;
     }
+
     if ( Service2EDiagDataLength < 3 )
     {
         NegRes.code = incorrectMessageLength; //NRC13
         UDS_Service_Response ( 0x2E, NEGATIVE_RSP, DIAG_ID_Tx, 1, ( uint8_t * ) ( &NegRes.code ) );
         return;
     }
-    if( (SessionType == DefaultSession) || (SessionType == ProgrammingSession))
+
+    if ( DiagLockFlag == 0x00 )
     {
-        NegRes.code = serviceNotSupportedInActiveSession; //NRC7F
+        NegRes.code = securityAccessDenied; //NRC33
         UDS_Service_Response ( 0x2E, NEGATIVE_RSP, DIAG_ID_Tx, 1, ( uint8_t * ) ( &NegRes.code ) );
         return;
     }
     DID = ((uint16_t)UDS_ISO14229_Transfer[0] << 8) | ((uint16_t)UDS_ISO14229_Transfer[1]);
     switch ( DID )
     {
-        case 0xF184: // 读指纹数据标识符
-            for (i = 0; i < 33; i++) 
+        case 0xF184: // 写入UUID
+            if ( Service2EDiagDataLength == 23 ) //限制最大长度
+            {
+                for (i = 0; i < 21; i++)
                 {
-                Data[i] = UDS_ISO14229_Transfer[i+2];
+                    Data[i] = UDS_ISO14229_Transfer[i + 2];
                 }
 
                 for (i = 0; i < (sizeof(Ser2EDataForDFlash.DID_F184)); i++)
@@ -949,11 +956,17 @@ void UDS_Service_2E_Indication ( uint16_t A_TA_type, uint16_t A_Length, uint8_t
                 }
                 Ser2EDataForDFlash.Flag = 0x5AA5A77Au;
                 // memcpy(Ser2EDataForDFlash.DID_F184, Data, sizeof(Ser2EDataForDFlash.DID_F184));
-            //擦除扇区
-	        EraseSector (0x500600ul);
-            //App程序状态和22服务数据全写进去
-            ProgramPage (0x500600ul, sizeof(Ser2EDataForDFlash), (uint8_t *)(&Ser2EDataForDFlash));
+                // 擦除扇区
+                EraseSector(0x500600ul);
+                // App程序状态和22服务数据全写进去
+                ProgramPage(0x500600ul, sizeof(Ser2EDataForDFlash), (uint8_t *)(&Ser2EDataForDFlash));
                 UDS_Service_Response(0x2E, POSITIVE_RSP, DIAG_ID_Tx, 2, UDS_ISO14229_Transfer);
+            }
+            else
+            {
+                NegRes.code = incorrectMessageLength; //NRC13
+                UDS_Service_Response ( 0x2E, NEGATIVE_RSP, DIAG_ID_Tx, 1, ( uint8_t * ) ( &NegRes.code ) );
+            }
             break;
         default:
             if ( FunorPhy == 0x7df )

Firmware/Source/UDS/UDS_ISO14229_Services.h

@@ -354,7 +354,8 @@ extern DiagDFlashData DiagDataForDFlash;
 typedef struct
 {
     uint32_t Flag;
-    uint8_t DID_F184[32];
+    uint8_t DID_F184[21];
+    uint8_t Filldata[11];
 } Ser2EDFlashData;
 extern Ser2EDFlashData Ser2EDataForDFlash;