修改lvgl。cjson内存管理器

applications/PLC_link.c

@@ -29,6 +29,8 @@ static const mb_backend_param_t mb_bkd_prm = {
 };
 
 extern unsigned char sys_time[6];
+uint8_t r_buffer[16],w_buffer[16];
+uint16_t r_regsD[128],w_regsD[128];
 
 static void mb_plc_read_regs(mb_inst_t *hinst)
 {
@@ -39,7 +41,7 @@ static void mb_plc_read_regs(mb_inst_t *hinst)
     }
 
     //输入m0000->rtu2000
-    uint8_t r_buffer[(DI_TABLE_SIZE + 7) / 8];
+    //uint8_t r_buffer[(DI_TABLE_SIZE + 7) / 8];
     //读取 Modbus bits
     int mrx = mb_read_bits(hinst, 2000, DI_TABLE_SIZE, r_buffer);
     if (mrx > 0)
@@ -53,7 +55,7 @@ static void mb_plc_read_regs(mb_inst_t *hinst)
     }
 
     // 输出 m0256 -> RTU 2256
-    uint8_t w_buffer[(DO_TABLE_SIZE + 7) / 8]; // 关键：初始化为0
+    //uint8_t w_buffer[(DO_TABLE_SIZE + 7) / 8]; // 关键：初始化为0
     // 打包 do_table 到 bit_buffer
     for (int i = 0; i < DO_TABLE_SIZE; i++) {
         const int byte_idx = i / 8;
@@ -73,7 +75,7 @@ static void mb_plc_read_regs(mb_inst_t *hinst)
     }
 
     //输入寄存器d0->6000
-    u16 r_regsD[AI_TABLE_SIZE];
+    //u16 r_regsD[AI_TABLE_SIZE];
     // 读 Modbus
     int mrd = mb_read_regs(hinst, 6000, AI_TABLE_SIZE, r_regsD);
     if (mrd > 0)
@@ -87,7 +89,7 @@ static void mb_plc_read_regs(mb_inst_t *hinst)
     }
 
     //输出寄存器d100->6100
-    u16 w_regsD [AO_TABLE_SIZE];
+    //u16 w_regsD [AO_TABLE_SIZE];
     for (int i = 0; i < AO_TABLE_SIZE; i++)
     {
         w_regsD [i] = ao_table[i].current_Value;

applications/lvgl/lv_port_mem.c

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2026-01-24     Administrator       the first version
+ */
+#include <rtthread.h>
+#include "lvgl.h"
+#include <stddef.h>
+
+extern struct rt_memheap sdram_heap;  //
+
+void *lv_custom_mem_alloc(size_t size)
+{
+    return rt_memheap_alloc(&sdram_heap, size);
+}
+
+void lv_custom_mem_free(void *ptr)
+{
+    if (ptr) rt_memheap_free(ptr);
+}
+
+void *lv_custom_mem_realloc(void *ptr, size_t new_size)
+{
+    return rt_memheap_realloc(&sdram_heap, ptr, new_size);
+}

applications/lvgl/lv_port_mem.h

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2026-01-24     Administrator       the first version
+ */
+#ifndef APPLICATIONS_LVGL_LV_PORT_MEM_H_
+#define APPLICATIONS_LVGL_LV_PORT_MEM_H_
+
+void *lv_custom_mem_alloc(size_t size);
+void  lv_custom_mem_free(void *ptr);
+void *lv_custom_mem_realloc(void *ptr, size_t new_size);
+
+#endif /* APPLICATIONS_LVGL_LV_PORT_MEM_H_ */

applications/sql/DB_SQLite.c

@@ -190,8 +190,6 @@ 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);
                g_db = RT_NULL;
            }
            return; //
@@ -286,7 +284,6 @@ static void db_sqlite(void *parameter) {
             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;
                 op_link=0;

applications/wdt.c

@@ -35,6 +35,9 @@ static void idle_hook(void)
 
 static int wdt_sample()
 {
+
+    rt_thread_mdelay(5000);
+
     rt_err_t ret = RT_EOK;
     rt_uint32_t timeout = 1;        /* 溢出时间，单位：秒 */
     char device_name[RT_NAME_MAX];