diff --git a/.config b/.config
index df8be68..7957d11 100644
--- a/.config
+++ b/.config
@@ -207,7 +207,7 @@ CONFIG_RT_USING_SDIO=y
 CONFIG_RT_SDIO_STACK_SIZE=512
 CONFIG_RT_SDIO_THREAD_PRIORITY=15
 CONFIG_RT_MMCSD_STACK_SIZE=1024
-CONFIG_RT_MMCSD_THREAD_PREORITY=22
+CONFIG_RT_MMCSD_THREAD_PREORITY=19
 CONFIG_RT_MMCSD_MAX_PARTITION=16
 # CONFIG_RT_SDIO_DEBUG is not set
 CONFIG_RT_USING_SPI=y
@@ -1151,6 +1151,7 @@ CONFIG_PKG_RS485_VER="v1.06"
 # CONFIG_PKG_USING_ST7789_SPI is not set
 # CONFIG_PKG_USING_ISOTP_C is not set
 # CONFIG_PKG_USING_IKUNLED is not set
+# CONFIG_PKG_USING_INS5T8025 is not set
 # CONFIG_PKG_USING_SPI_TOOLS is not set
 # end of peripheral libraries and drivers
 
diff --git a/.cproject b/.cproject
index 91d1812..f1786c2 100644
--- a/.cproject
+++ b/.cproject
@@ -1076,7 +1076,7 @@
   <storageModule moduleId="org.eclipse.cdt.core.LanguageSettingsProviders" />
   <storageModule moduleId="refreshScope" versionNumber="2">
     <configuration configurationName="Debug">
-      <resource resourceType="PROJECT" workspacePath="/project" />
+      <resource resourceType="PROJECT" workspacePath="/828F" />
     </configuration>
   </storageModule>
   <storageModule moduleId="org.eclipse.cdt.make.core.buildtargets" />
diff --git a/.project b/.project
index 350c330..f059ea4 100644
--- a/.project
+++ b/.project
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <projectDescription>
-  <name>project</name>
+  <name>828F</name>
   <comment />
   <projects>
 	</projects>
diff --git a/.settings/.rtmenus b/.settings/.rtmenus
index d3b29c8..751bc3e 100644
Binary files a/.settings/.rtmenus and b/.settings/.rtmenus differ
diff --git a/applications/SCCM_link.c b/applications/SCCM_link.c
index 2854755..a02b9fb 100644
--- a/applications/SCCM_link.c
+++ b/applications/SCCM_link.c
@@ -22,7 +22,7 @@ static struct rt_semaphore rx_sem;
 
 #define RX_LINE_BUF_SIZE     1024
 #define RS485_SAMPLE_SLAVE_SERIAL       "uart4"
-#define RS485_SAMPLE_SLAVE_BAUDRATE     57600
+#define RS485_SAMPLE_SLAVE_BAUDRATE     115200
 #define RS485_SAMPLE_MASTER_PARITY      0 //0 -- none parity
 #define RS485_SAMPLE_SLAVE_PIN          -1 //-1 -- nonuse rs485 mode control
 #define RS485_SAMPLE_SLAVE_LVL          1
diff --git a/applications/data/DATA_comm.c b/applications/data/DATA_comm.c
index 909d091..a5d842e 100644
--- a/applications/data/DATA_comm.c
+++ b/applications/data/DATA_comm.c
@@ -574,7 +574,7 @@ void proc_thread_entry(void *parameter)
     }
 }
 
-extern struct rt_memheap sram_DTCMRAM;
+extern struct rt_memheap sdram_heap;
 static struct rt_thread dat_comm_thread;
 static void *dat_comm_stack __attribute__((aligned(4)))= RT_NULL ;
 int data_comm_init(void)
@@ -587,7 +587,7 @@ int data_comm_init(void)
         return -1;
     }
 
-    dat_comm_stack = rt_memheap_alloc(&sram_DTCMRAM, 1024*6);
+    dat_comm_stack = rt_memheap_alloc(&sdram_heap, 1024*6);
     dat_err = rt_thread_init(&dat_comm_thread, "dat_comm", proc_thread_entry, RT_NULL,dat_comm_stack, 1024*6, 15, 10);
 
     if(dat_err != RT_EOK)
diff --git a/applications/sql/DB_SQLite.c b/applications/sql/DB_SQLite.c
index e9758a4..85bdafe 100644
--- a/applications/sql/DB_SQLite.c
+++ b/applications/sql/DB_SQLite.c
@@ -189,6 +189,10 @@ void db_sqlite_init_full(void)
            if (g_db)
            {
                sqlite3_close(g_db);
+               //限制缓存大小 (100KB)
+               sqlite3_exec(g_db, "PRAGMA cache_size = -50;", 0, 0, 0);
+               //设置临时存储为文件模式 (节省内存)
+               sqlite3_exec(g_db, "PRAGMA temp_store = FILE;", 0, 0, 0);
                g_db = RT_NULL;
            }
            return; //
@@ -235,6 +239,10 @@ void db_sqlite_init_full(void)
     }else {
         if (sqlite3_open(DB_NAME, &g_db) == SQLITE_OK)
         {
+            //限制缓存大小 (100KB)
+            sqlite3_exec(g_db, "PRAGMA cache_size = -50;", 0, 0, 0);
+            //设置临时存储为文件模式 (节省内存)
+            sqlite3_exec(g_db, "PRAGMA temp_store = FILE;", 0, 0, 0);
             LOG_D("[DataBase] NAME (%s)",DB_NAME);
         }
     }
@@ -312,6 +320,10 @@ static void db_sqlite(void *parameter) {
                 return_disabled(&cmd);
                 continue;
             } else {
+                //限制缓存大小 (100KB)
+                sqlite3_exec(g_db, "PRAGMA cache_size = -50;", 0, 0, 0);
+                //设置临时存储为文件模式 (节省内存)
+                sqlite3_exec(g_db, "PRAGMA temp_store = FILE;", 0, 0, 0);
                 rt_kprintf("Opened database: %s\n", DB_NAME);
             }
         }
@@ -399,16 +411,28 @@ rt_err_t db_send_command(enum db_cmd_type type, const char* sql, rt_int32_t time
       return result;
 }
 
+extern struct rt_memheap sram_DTCMRAM;
+static struct rt_thread dat_sqlite_thread;
+static void *dat_sqlite_stack __attribute__((aligned(4)))= RT_NULL ;
 /* 线程 */
 void thread_DB_SQLite(void)
 {
-    rt_thread_t tid;
-    tid = rt_thread_create("db_sql", db_sqlite, RT_NULL, 1024 *16, 18, 10);
+    rt_err_t db_err;
+    dat_sqlite_stack = rt_memheap_alloc(&sram_DTCMRAM, 1024*16);
+    db_err = rt_thread_init(&dat_sqlite_thread, "db_sql", db_sqlite, RT_NULL,dat_sqlite_stack, 1024*16, 15, 10);
+    if(db_err != RT_EOK)
+    {
+        LOG_D("Failed to create SQLite thread!\n");
+    }
+    rt_thread_startup(&dat_sqlite_thread);
+
+   /* rt_thread_t tid;
+    tid = rt_thread_create("db_sql", db_sqlite, RT_NULL, 1024 *14, 18, 10);
 
     if (tid != RT_NULL)
     {
         rt_thread_startup(tid);
     }else{
         LOG_D("Failed to create SQLite thread!\n");
-    }
+    }*/
 }
diff --git a/applications/wdt.c b/applications/wdt.c
index 82cb6b2..7ef05f3 100644
--- a/applications/wdt.c
+++ b/applications/wdt.c
@@ -69,4 +69,4 @@ static int wdt_sample()
     return ret;
 }
 
-//INIT_APP_EXPORT(wdt_sample);
+INIT_APP_EXPORT(wdt_sample);
diff --git a/rtconfig.h b/rtconfig.h
index 62f6700..f683703 100644
--- a/rtconfig.h
+++ b/rtconfig.h
@@ -136,7 +136,7 @@
 #define RT_SDIO_STACK_SIZE 512
 #define RT_SDIO_THREAD_PRIORITY 15
 #define RT_MMCSD_STACK_SIZE 1024
-#define RT_MMCSD_THREAD_PREORITY 22
+#define RT_MMCSD_THREAD_PREORITY 19
 #define RT_MMCSD_MAX_PARTITION 16
 #define RT_USING_SPI
 #define RT_USING_QSPI