diff --git a/applications/PLC_link.c b/applications/PLC_link.c
index 98a59c5..a1b9b5b 100644
--- a/applications/PLC_link.c
+++ b/applications/PLC_link.c
@@ -70,12 +70,24 @@ static void mb_plc_thread(void *args)//线程服务函数
         rt_thread_mdelay(50);
     }
 }
-
+extern struct rt_memheap sram_DTCMRAM;
+static struct rt_thread dat_plc_thread;
+static void *dat_plc_stack __attribute__((aligned(4)))= RT_NULL ;
 static int mb_rtu_master_startup(void)
 {
-    rt_thread_t tid = rt_thread_create("plc_rtu", mb_plc_thread, NULL, 2048, 5, 20);
+    rt_err_t db_err;
+    dat_plc_stack = rt_memheap_alloc(&sram_DTCMRAM, 1024*2);
+    db_err = rt_thread_init(&dat_plc_thread, "plc_rtu", mb_plc_thread, RT_NULL,dat_plc_stack, 1024*2, 10, 10);
+    if(db_err != RT_EOK)
+    {
+        LOG_D("Failed to create SCCM_uart thread!");
+        return -1;
+    }
+    rt_thread_startup(&dat_plc_thread);
+    LOG_I("Create SCCM_uart thread");
+   /*rt_thread_t tid = rt_thread_create("plc_rtu", mb_plc_thread, NULL, 2048, 5, 20);
     RT_ASSERT(tid != NULL);
-    rt_thread_startup(tid);
+    rt_thread_startup(tid);*/
     return(0);
 }
 INIT_APP_EXPORT(mb_rtu_master_startup);
diff --git a/applications/SCCM_link.c b/applications/SCCM_link.c
index a02b9fb..62bf311 100644
--- a/applications/SCCM_link.c
+++ b/applications/SCCM_link.c
@@ -86,10 +86,23 @@ void uart_thread_entry(void *parameter)
         }
     }
 }
-
+extern struct rt_memheap sram_DTCMRAM;
+static struct rt_thread dat_uart_thread;
+static void *dat_uart_stack __attribute__((aligned(4)))= RT_NULL ;
 int start_uart_thread(void)
 {
-    rt_thread_t tid = rt_thread_create("sccm",uart_thread_entry,RT_NULL,2048,11,10);
+    rt_err_t db_err;
+    dat_uart_stack = rt_memheap_alloc(&sram_DTCMRAM, 1024*2);
+    db_err = rt_thread_init(&dat_uart_thread, "sccm", uart_thread_entry, RT_NULL,dat_uart_stack, 1024*2, 11, 10);
+    if(db_err != RT_EOK)
+    {
+        LOG_D("Failed to create SCCM_uart thread!");
+        return -1;
+    }
+    rt_thread_startup(&dat_uart_thread);
+    LOG_I("Create SCCM_uart thread");
+    return 0;
+   /* rt_thread_t tid = rt_thread_create("sccm",uart_thread_entry,RT_NULL,2048,11,10);
     if (tid != RT_NULL)
     {
         rt_thread_startup(tid);
@@ -100,6 +113,6 @@ int start_uart_thread(void)
     {
         LOG_E("Failed to create SCCM_uart thread!");
         return -1;
-    }
+    }*/
 }
 INIT_COMPONENT_EXPORT(start_uart_thread);
diff --git a/applications/data/DATA_comm.c b/applications/data/DATA_comm.c
index a5d842e..909d091 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 sdram_heap;
+extern struct rt_memheap sram_DTCMRAM;
 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(&sdram_heap, 1024*6);
+    dat_comm_stack = rt_memheap_alloc(&sram_DTCMRAM, 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 85bdafe..5e0ad48 100644
--- a/applications/sql/DB_SQLite.c
+++ b/applications/sql/DB_SQLite.c
@@ -36,6 +36,7 @@ static void return_timeout(struct db_command *cmd);
 static void return_disabled(struct db_command *cmd);
 static void handle_db_command(struct db_command *cmd);
 static int callback(void *result_str, int argc, char **argv, char **azColName);
+extern int sqlite3_init_with_sdram_heap(void);
 static const char *sql_upgrade_workorder_steps =
     "CREATE TABLE WorkorderSteps (WorkOrder VARCHAR,DYELOT VARCHAR,ProgramID VARCHAR,Program VARCHAR,ReDye INT DEFAULT (0),"
         "Mode VARCHAR,Step INT,StepID VARCHAR,StepName VARCHAR,ParameterName VARCHAR,P1 DOUBLE,P2 DOUBLE,P3 DOUBLE,"
@@ -179,6 +180,10 @@ void close_db_immediately(void) {
 void db_sqlite_init_full(void)
 {
     LOG_D("[DataBase] Init SQLite");
+    if (sqlite3_init_with_sdram_heap() != 0)
+    {
+        LOG_E("Failed to set memory");
+    }else{ LOG_D("set memory");}
     sqlite3_initialize();
 
     if (access(DB_NAME, F_OK) != 0)
@@ -190,9 +195,7 @@ void db_sqlite_init_full(void)
            {
                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);
+               sqlite3_exec(g_db, "PRAGMA cache_size = 50;", 0, 0, 0);
                g_db = RT_NULL;
            }
            return; //
@@ -235,15 +238,15 @@ void db_sqlite_init_full(void)
            }
 
            LOG_D("[DataBase] New database created. Creating tables Name (%s)",DB_NAME);
+           sqlite3_close(g_db);
+           g_db=RT_NULL;
        }
     }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);
+            sqlite3_close(g_db);
+            g_db=RT_NULL;
         }
     }
 }
@@ -276,12 +279,21 @@ static void db_sqlite(void *parameter) {
 
     // 默认启用数据库
     db_enabled = RT_TRUE;
-
+    static rt_bool_t  first_wait_done = RT_FALSE;
     while (1)
     {
         // 接收命令
-        if (rt_mq_recv(db_mq, &cmd, sizeof(struct db_command), RT_WAITING_FOREVER) <= RT_EOK)
+        if (rt_mq_recv(db_mq, &cmd, sizeof(struct db_command), 500) <= RT_EOK)
+        {
+            if (first_wait_done)
+            {
+                first_wait_done = RT_FALSE;
+                //sqlite3_exec(g_db, "PRAGMA shrink_memory;", 0, 0, 0);
+                sqlite3_close(g_db);
+                g_db=RT_NULL;
+            }
             continue;
+        }else{first_wait_done = RT_TRUE;}
 
         //检查排队超时
         rt_tick_t now = rt_tick_get();
@@ -321,10 +333,10 @@ static void db_sqlite(void *parameter) {
                 continue;
             } else {
                 //限制缓存大小 (100KB)
-                sqlite3_exec(g_db, "PRAGMA cache_size = -50;", 0, 0, 0);
+                //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);
+                //sqlite3_exec(g_db, "PRAGMA temp_store = FILE;", 0, 0, 0);
+                //rt_kprintf("Opened database: %s\n", DB_NAME);
             }
         }
 
@@ -422,12 +434,12 @@ void thread_DB_SQLite(void)
     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");
+        LOG_D("Failed to create SQLite thread!");
     }
     rt_thread_startup(&dat_sqlite_thread);
 
-   /* rt_thread_t tid;
-    tid = rt_thread_create("db_sql", db_sqlite, RT_NULL, 1024 *14, 18, 10);
+    /*rt_thread_t tid;
+    tid = rt_thread_create("db_sql", db_sqlite, RT_NULL, 1024 *16, 18, 10);
 
     if (tid != RT_NULL)
     {
diff --git a/applications/wdt.c b/applications/wdt.c
index 7ef05f3..82cb6b2 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/drivers/board.c b/drivers/board.c
index 4ed5cd1..2085b85 100644
--- a/drivers/board.c
+++ b/drivers/board.c
@@ -16,6 +16,11 @@ struct rt_memheap sram_DTCMRAM,sram_AXIRAM,sram_SRAM1,sram_SRAM2;
 
 rt_weak void rt_hw_board_init()
 {
+    /* 允许未对齐访问（Cortex-M3/M4/M7 支持） */
+    //SCB->CCR |= SCB_CCR_UNALIGN_TRP_Msk; // ← 默认是 1（禁止）
+    // 要允许，应该 CLEAR 这个位！
+    //SCB->CCR &= ～SCB_CCR_UNALIGN_TRP_Msk;
+
     extern void hw_board_init(char *clock_src, int32_t clock_src_freq, int32_t clock_target_freq);
 
     /* Heap initialization */
diff --git a/drivers/include/drv_sdio.h b/drivers/include/drv_sdio.h
index e3c6ac0..09d8af5 100644
--- a/drivers/include/drv_sdio.h
+++ b/drivers/include/drv_sdio.h
@@ -44,7 +44,7 @@
 #endif
 
 #ifndef SDIO_MAX_FREQ
-#define SDIO_MAX_FREQ        (25 * 1000 * 1000)
+#define SDIO_MAX_FREQ        (50 * 1000 * 1000)
 #endif
 
 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
diff --git a/packages/sqlite/sqlite3.c b/packages/sqlite/sqlite3.c
index 6f5295f..1310718 100644
--- a/packages/sqlite/sqlite3.c
+++ b/packages/sqlite/sqlite3.c
@@ -20727,6 +20727,10 @@ static malloc_zone_t* _sqliteZone_;
 ** Use standard C library malloc and free on non-Apple systems.
 ** Also used by rt-thread systems if SQLITE_WITHOUT_ZONEMALLOC is defined.
 */
+extern struct rt_memheap sdram_heap,sram_SRAM1,sram_DTCMRAM;
+//#define SQLITE_MALLOC(x)    rt_memheap_alloc(&sram_DTCMRAM,(rt_size_t)x)
+//#define SQLITE_FREE(x)      rt_free(x)
+//#define SQLITE_REALLOC(x,y) rt_memheap_realloc(&sram_DTCMRAM,(x),(rt_size_t)(y))
 #define SQLITE_MALLOC(x)    rt_malloc((rt_size_t)x)
 #define SQLITE_FREE(x)      rt_free(x)
 #define SQLITE_REALLOC(x,y) rt_realloc((x),(rt_size_t)(y))