diff --git a/bsp/lpc55sxx/lpc55s69_nxp_evk/applications/main.c b/bsp/lpc55sxx/lpc55s69_nxp_evk/applications/main.c
index e03a8c6336..e0a2e3171f 100644
--- a/bsp/lpc55sxx/lpc55s69_nxp_evk/applications/main.c
+++ b/bsp/lpc55sxx/lpc55s69_nxp_evk/applications/main.c
@@ -1,11 +1,13 @@
 /*
  * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2019-2020, Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
  * 2019-10-24     Magicoe      first version
+ * 2020-01-10     Kevin/Karl   Add PS demo
  *
  */
 
@@ -16,8 +18,12 @@
 /* GPIO1_4 is Blue LED */
 #define LEDB_PIN      GET_PINS(1, 4)
 
+extern void protected_storage_demo_thread(void * parameters);
+
 int main(void)
 {
+    rt_thread_t t_psa_ps_demo;
+
 #if defined(__CC_ARM)
     rt_kprintf("using armcc, version: %d\n", __ARMCC_VERSION);
 #elif defined(__CLANG_ARM)
@@ -27,7 +33,15 @@ int main(void)
 #elif defined(__GNUC__)
     rt_kprintf("using gcc, version: %d.%d\n", __GNUC__, __GNUC_MINOR__);
 #endif
-  
+
+    t_psa_ps_demo = rt_thread_create("psa_ps_demo",
+                                     protected_storage_demo_thread,
+                                     RT_NULL,
+                                     512,
+                                     ( RT_MAIN_THREAD_PRIORITY - 1),
+                                     50);
+    if (t_psa_ps_demo != RT_NULL) rt_thread_startup(t_psa_ps_demo);
+
     rt_pin_mode(LEDB_PIN, PIN_MODE_OUTPUT);  /* Set GPIO as Output */
     while (1)
     {
diff --git a/bsp/lpc55sxx/lpc55s69_nxp_evk/applications/tfm_ps.c b/bsp/lpc55sxx/lpc55s69_nxp_evk/applications/tfm_ps.c
new file mode 100644
index 0000000000..2c99e47402
--- /dev/null
+++ b/bsp/lpc55sxx/lpc55s69_nxp_evk/applications/tfm_ps.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2019-2020, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-01-10     Kevin/Karl   Add PS demo
+ *
+ */
+
+#include <rtdevice.h>
+#include <string.h>
+#include "tfm_ns_lock.h"
+#include "psa_protected_storage.h"
+
+#define TEST_UID_A      2U
+#define ASSET_A         "THEQUICKBROWNFOXJUMPSOVERALAZYDOG"
+#define ASSET_A_SIZE    (sizeof( ASSET_A ) - 1)
+#define RESETDATA       "THISIS"
+#define RESETDATA_SIZE  (sizeof( RESETDATA ) - 1)
+#define READ_LENGTH     (ASSET_A_SIZE > RESETDATA_SIZE ? \
+                         ASSET_A_SIZE : RESETDATA_SIZE)
+
+void protected_storage_demo_thread(void * parameters)
+{
+    psa_ps_status_t status;
+    const psa_ps_uid_t uid = TEST_UID_A;
+    const psa_ps_create_flags_t flags = PSA_PS_FLAG_NONE;
+    uint8_t write_data[] = ASSET_A;
+    const uint32_t data_length = ASSET_A_SIZE;
+    uint8_t rewrite_data[] = RESETDATA;
+    const uint32_t reset_data_length = RESETDATA_SIZE;
+    uint8_t get_data[READ_LENGTH];
+    uint32_t counter = 0;
+
+    tfm_ns_lock_init();
+
+    for ( ; ; )
+    {
+        /* Call TF-M protected storage service and set the asset. */
+        status = psa_ps_set(uid, data_length, write_data, flags);
+        if (status != PSA_PS_SUCCESS)
+        {
+            rt_kprintf("[Protected Storage Asset A Set Round %ld] Fail\r\n", counter);
+            for( ; ; );
+        }
+
+        rt_kprintf("[Protected Storage Asset A Set Round %ld] Success\r\n", counter);
+
+        /* Read the asset. */
+        status = psa_ps_get(uid, 0, data_length, get_data);
+        if (status != PSA_PS_SUCCESS)
+        {
+            rt_kprintf("[Protected Storage Asset A Get Round %ld] Fail\r\n", counter);
+            for ( ; ; );
+        }
+
+        rt_kprintf("[Protected Storage Asset A Get Round %ld] Success\r\n", counter);
+
+        /* Check the read data. */
+        if (memcmp(write_data, get_data, sizeof(write_data) - 1) != 0)
+        {
+            rt_kprintf("[Protected Storage Asset A Get Round %ld] Get the wrong data\r\n", counter);
+            for ( ; ; );
+        }
+
+        /* Change the asset. */
+        status = psa_ps_set(uid, reset_data_length, rewrite_data, flags);
+        if (status != PSA_PS_SUCCESS)
+        {
+            rt_kprintf("[Protected Storage Asset A Reset Round %ld] Fail\r\n", counter);
+        }
+
+        rt_kprintf("[Protected Storage Asset A Reset Round %ld] Success\r\n", counter);
+
+        /* Read the asset. */
+        status = psa_ps_get(uid, 0, reset_data_length, get_data);
+        if (status != PSA_PS_SUCCESS)
+        {
+            rt_kprintf("[Protected Storage Asset A Get Round %ld] Fail\r\n", counter);
+            for ( ; ; );
+        }
+
+        rt_kprintf("[Protected Storage Asset A Get Round %ld] Success\r\n", counter);
+
+        /* Check the read data. */
+        if (memcmp(rewrite_data, get_data, sizeof(rewrite_data) - 1) != 0)
+        {
+            rt_kprintf("[Protected Storage Asset A Get Round %ld] Get the wrong data\r\n", counter);
+            for ( ; ; );
+        }
+
+        /* Remove the asset. */
+        status = psa_ps_remove(uid);
+        if (status != PSA_PS_SUCCESS)
+        {
+            rt_kprintf("[Protected Storage Asset A Remove Round %ld] Fail\r\n", counter);
+            for ( ; ; );
+        }
+
+        rt_kprintf("[Protected Storage Asset A Remove Round %ld] Success\r\n\n", counter);
+
+        /* Wait for a second. */
+        rt_thread_mdelay(1000);
+        counter++;
+    }
+}
+
+// end file
diff --git a/bsp/lpc55sxx/lpc55s69_nxp_evk/project_ns.uvoptx b/bsp/lpc55sxx/lpc55s69_nxp_evk/project_ns.uvoptx
index 9459d78b20..b6a39c92b3 100644
--- a/bsp/lpc55sxx/lpc55s69_nxp_evk/project_ns.uvoptx
+++ b/bsp/lpc55sxx/lpc55s69_nxp_evk/project_ns.uvoptx
@@ -370,6 +370,18 @@
       <RteFlg>0</RteFlg>
       <bShared>0</bShared>
     </File>
+    <File>
+      <GroupNumber>2</GroupNumber>
+      <FileNumber>16</FileNumber>
+      <FileType>1</FileType>
+      <tvExp>0</tvExp>
+      <tvExpOptDlg>0</tvExpOptDlg>
+      <bDave2>0</bDave2>
+      <PathWithFileName>.\applications\tfm_ps.c</PathWithFileName>
+      <FilenameWithoutPath>tfm_ps.c</FilenameWithoutPath>
+      <RteFlg>0</RteFlg>
+      <bShared>0</bShared>
+    </File>
   </Group>
 
   <Group>
diff --git a/bsp/lpc55sxx/lpc55s69_nxp_evk/project_ns.uvprojx b/bsp/lpc55sxx/lpc55s69_nxp_evk/project_ns.uvprojx
index a149a896ff..26e8530af6 100644
--- a/bsp/lpc55sxx/lpc55s69_nxp_evk/project_ns.uvprojx
+++ b/bsp/lpc55sxx/lpc55s69_nxp_evk/project_ns.uvprojx
@@ -463,6 +463,11 @@
               <FileType>1</FileType>
               <FilePath>applications\main.c</FilePath>
             </File>
+            <File>
+              <FileName>tfm_ps.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>.\applications\tfm_ps.c</FilePath>
+            </File>
           </Files>
         </Group>
         <Group>