diff --git a/include/platform/adc_if.h b/include/platform/adc_if.h
index 5ce22546..c5794c97 100644
--- a/include/platform/adc_if.h
+++ b/include/platform/adc_if.h
@@ -28,6 +28,16 @@ void AdcClose(DevHandle handle);
 
 int32_t AdcRead(DevHandle handle, uint32_t channel, uint32_t *val);
 
+/**
+ * @brief Enumerates ADC I/O commands.
+ *
+ * @since 1.0
+ */
+enum AdcIoCmd {
+    ADC_IO_READ = 0,    /**< Read the A/D data. */
+    ADC_IO_OPEN,        /**< Open the ADC device. */
+    ADC_IO_CLOSE,       /**< Close the ADC device. */
+};
 #ifdef __cplusplus
 #if __cplusplus
 }
diff --git a/support/platform/include/adc/adc_core.h b/support/platform/include/adc/adc_core.h
index c6890dfd..5719ef13 100644
--- a/support/platform/include/adc/adc_core.h
+++ b/support/platform/include/adc/adc_core.h
@@ -46,12 +46,6 @@ struct AdcLockMethod {
     void (*unlock)(struct AdcDevice *device);
 };
 
-enum AdcIoCmd {
-    ADC_IO_READ = 0,
-    ADC_IO_OPEN,
-    ADC_IO_CLOSE,
-};
-
 int32_t AdcDeviceAdd(struct AdcDevice *device);
 
 void AdcDeviceRemove(struct AdcDevice *device);
diff --git a/support/platform/src/adc/adc_core.c b/support/platform/src/adc/adc_core.c
index f53fecae..032fc154 100644
--- a/support/platform/src/adc/adc_core.c
+++ b/support/platform/src/adc/adc_core.c
@@ -18,6 +18,8 @@
 #define LOCK_WAIT_SECONDS_M 1
 #define ADC_BUFF_SIZE 4
 
+#define ADC_HANDLE_SHIFT    0xFF00U
+
 struct AdcManager {
     struct IDeviceIoService service;
     struct HdfDeviceObject *device;
@@ -48,6 +50,69 @@ static const struct AdcLockMethod g_adcLockOpsDefault = {
     .unlock = AdcDeviceUnlockDefault,
 };
 
+static inline int32_t AdcDeviceLock(struct AdcDevice *device)
+{
+    if (device->lockOps == NULL || device->lockOps->lock == NULL) {
+        return HDF_ERR_NOT_SUPPORT;
+    }
+    return device->lockOps->lock(device);
+}
+
+static inline void AdcDeviceUnlock(struct AdcDevice *device)
+{
+    if (device->lockOps != NULL && device->lockOps->unlock != NULL) {
+        device->lockOps->unlock(device);
+    }
+}
+
+int32_t AdcDeviceStart(struct AdcDevice *device)
+{
+    int32_t ret;
+
+    if (device == NULL) {
+        HDF_LOGE("%s: device is null", __func__);
+        return HDF_ERR_INVALID_OBJECT;
+    }
+
+    if (device->ops == NULL || device->ops->start == NULL) {
+        HDF_LOGE("%s: ops or start is null", __func__);
+        return HDF_ERR_NOT_SUPPORT;
+    }
+
+    if (AdcDeviceLock(device) != HDF_SUCCESS) {
+        HDF_LOGE("%s: lock add device failed", __func__);
+        return HDF_ERR_DEVICE_BUSY;
+    }
+
+    ret = device->ops->start(device);
+    AdcDeviceUnlock(device);
+    return ret;
+}
+
+int32_t AdcDeviceStop(struct AdcDevice *device)
+{
+    int32_t ret;
+
+    if (device == NULL) {
+        HDF_LOGE("%s: device is null", __func__);
+        return HDF_ERR_INVALID_OBJECT;
+    }
+
+    if (device->ops == NULL || device->ops->stop == NULL) {
+        HDF_LOGE("%s: ops or stop is null", __func__);
+        return HDF_ERR_NOT_SUPPORT;
+    }
+
+    if (AdcDeviceLock(device) != HDF_SUCCESS) {
+        HDF_LOGE("%s: lock add device failed", __func__);
+        return HDF_ERR_DEVICE_BUSY;
+    }
+
+    ret = device->ops->stop(device);
+    AdcDeviceUnlock(device);
+    return ret;
+}
+
 static int32_t AdcManagerAddDevice(struct AdcDevice *device)
 {
     int32_t ret;
@@ -134,6 +199,45 @@ static struct AdcDevice *AdcManagerFindDevice(uint32_t number)
     return device;
 }
 
+struct AdcDevice *AdcDeviceGet(uint32_t number)
+{
+    return AdcManagerFindDevice(number);
+}
+
+void AdcDevicePut(struct AdcDevice *device)
+{
+    (void)device;
+}
+
+static struct AdcDevice *AdcDeviceOpen(uint32_t number)
+{
+    int32_t ret;
+    struct AdcDevice *device = NULL;
+
+    device = AdcDeviceGet(number);
+    if (device == NULL) {
+        return NULL;
+    }
+
+    ret = AdcDeviceStart(device);
+    if (ret != HDF_SUCCESS) {
+        return NULL;
+    }
+
+    return device;
+}
+
+static void AdcDeviceClose(struct AdcDevice *device)
+{
+    if (device == NULL) {
+        HDF_LOGE("%s: close adc device fail", __func__);
+        return;
+    }
+
+    (void)AdcDeviceStop(device);
+    AdcDevicePut(device);
+}
+
 int32_t AdcDeviceAdd(struct AdcDevice *device)
 {
     int32_t ret;
@@ -173,31 +277,6 @@ void AdcDeviceRemove(struct AdcDevice *device)
     (void)OsalSpinDestroy(&device->spin);
 }
 
-struct AdcDevice *AdcDeviceGet(uint32_t number)
-{
-    return AdcManagerFindDevice(number);
-}
-
-void AdcDevicePut(struct AdcDevice *device)
-{
-    (void)device;
-}
-
-static inline int32_t AdcDeviceLock(struct AdcDevice *device)
-{
-    if (device->lockOps == NULL || device->lockOps->lock == NULL) {
-        return HDF_ERR_NOT_SUPPORT;
-    }
-    return device->lockOps->lock(device);
-}
-
-static inline void AdcDeviceUnlock(struct AdcDevice *device)
-{
-    if (device->lockOps != NULL && device->lockOps->unlock != NULL) {
-        device->lockOps->unlock(device);
-    }
-}
-
 int32_t AdcDeviceRead(struct AdcDevice *device, uint32_t channel, uint32_t *val)
 {
     int32_t ret;
@@ -227,73 +306,36 @@ int32_t AdcDeviceRead(struct AdcDevice *device, uint32_t channel, uint32_t *val)
     return ret;
 }
 
-int32_t AdcDeviceStart(struct AdcDevice *device)
-{
-    int32_t ret;
-
-    if (device == NULL) {
-        HDF_LOGE("%s: device is null", __func__);
-        return HDF_ERR_INVALID_OBJECT;
-    }
-
-    if (device->ops == NULL || device->ops->start == NULL) {
-        HDF_LOGE("%s: ops or start is null", __func__);
-        return HDF_ERR_NOT_SUPPORT;
-    }
-
-    if (AdcDeviceLock(device) != HDF_SUCCESS) {
-        HDF_LOGE("%s: lock add device failed", __func__);
-        return HDF_ERR_DEVICE_BUSY;
-    }
-
-    ret = device->ops->start(device);
-    AdcDeviceUnlock(device);
-    return ret;
-}
-
-int32_t AdcDeviceStop(struct AdcDevice *device)
-{
-    int32_t ret;
-
-    if (device == NULL) {
-        HDF_LOGE("%s: device is null", __func__);
-        return HDF_ERR_INVALID_OBJECT;
-    }
-
-    if (device->ops == NULL || device->ops->stop == NULL) {
-        HDF_LOGE("%s: ops or stop is null", __func__);
-        return HDF_ERR_NOT_SUPPORT;
-    }
-
-    if (AdcDeviceLock(device) != HDF_SUCCESS) {
-        HDF_LOGE("%s: lock add device failed", __func__);
-        return HDF_ERR_DEVICE_BUSY;
-    }
-
-    ret = device->ops->stop(device);
-    AdcDeviceUnlock(device);
-    return ret;
-}
-
 static int32_t AdcManagerIoOpen(struct HdfSBuf *data, struct HdfSBuf *reply)
 {
     uint32_t number;
 
+    if (data == NULL || reply == NULL) {
+        HDF_LOGE("%s: invalid data or reply!", __func__);
+        return HDF_ERR_INVALID_PARAM;
+    }
+
     if (!HdfSbufReadUint32(data, &number)) {
+        HDF_LOGE("%s: read data failed!", __func__);
         return HDF_ERR_IO;
     }
 
     if (number < 0 || number >= ADC_DEVICES_MAX || reply == NULL) {
+        HDF_LOGE("%s: invalid number!", __func__);
         return HDF_ERR_INVALID_PARAM;
     }
 
-    if (AdcDeviceGet(number) == NULL) {
+    if (AdcDeviceOpen(number) == NULL) {
+        HDF_LOGE("%s: get device %u failed", __func__, number);
         return HDF_ERR_NOT_SUPPORT;
     }
 
-    if (!HdfSbufWriteUint32(reply, number)) {
+    number = (uint32_t)(number + ADC_HANDLE_SHIFT);
+    if (!HdfSbufWriteUint32(reply, (uint32_t)(uintptr_t)number)) {
+        HDF_LOGE("%s: write reply failed!", __func__);
         return HDF_ERR_IO;
     }
+
     return HDF_SUCCESS;
 }
 
@@ -301,28 +343,66 @@ static int32_t AdcManagerIoClose(struct HdfSBuf *data, struct HdfSBuf *reply)
 {
     uint32_t number;
 
+    if (data == NULL) {
+        HDF_LOGE("%s: invalid data!", __func__);
+        return HDF_ERR_INVALID_PARAM;
+    }
+
     if (!HdfSbufReadUint32(data, &number)) {
+        HDF_LOGE("%s: read data failed!", __func__);
         return HDF_ERR_IO;
     }
 
+    number = (uint32_t)(number - ADC_HANDLE_SHIFT);
     if (number < 0 || number >= ADC_DEVICES_MAX) {
+        HDF_LOGE("%s: get device %u failed", __func__, number);
         return HDF_ERR_INVALID_PARAM;
     }
-    AdcDevicePut(AdcManagerFindDevice(number));
+
+    AdcDeviceClose(AdcManagerFindDevice(number));
     return HDF_SUCCESS;
 }
 
 static int32_t AdcManagerIoRead(struct HdfSBuf *data, struct HdfSBuf *reply)
 {
-    (void)data;
-    (void)reply;
-    return HDF_SUCCESS;
+    int32_t ret;
+    uint32_t number;
+    uint32_t channel;
+    uint32_t val;
+
+    if (data == NULL || reply == NULL) {
+        HDF_LOGE("%s: invalid data or reply!", __func__);
+        return HDF_ERR_INVALID_PARAM;
+    }
+
+     if (!HdfSbufReadUint32(data, &number)) {
+        HDF_LOGE("AdcManagerIoRead: read handle failed!");
+        return HDF_ERR_IO;
+    }
+
+     if (!HdfSbufReadUint32(data, &channel)) {
+        HDF_LOGE("AdcManagerIoRead: read handle failed!");
+        return HDF_ERR_IO;
+    }
+
+    number  = (uint32_t)(number - ADC_HANDLE_SHIFT);
+    ret = AdcDeviceRead(AdcManagerFindDevice(number), channel, &val);
+    if(ret != HDF_SUCCESS) {
+       HDF_LOGE("AdcManagerIoRead: read val failed!");
+       return HDF_ERR_IO;
+    }
+
+    if (!HdfSbufWriteUint32(reply, val)) {
+        HDF_LOGE("%s: write val fail!", __func__);
+	    return HDF_ERR_IO;
+    }
+
+    return ret;
 }
 
 static int32_t AdcManagerDispatch(struct HdfDeviceIoClient *client, int cmd,
     struct HdfSBuf *data, struct HdfSBuf *reply)
 {
-    int32_t ret;
 
     switch (cmd) {
         case ADC_IO_OPEN:
@@ -332,10 +412,15 @@ static int32_t AdcManagerDispatch(struct HdfDeviceIoClient *client, int cmd,
         case ADC_IO_READ:
             return AdcManagerIoRead(data, reply);
         default:
-            ret = HDF_ERR_NOT_SUPPORT;
-            break;
+            return HDF_ERR_NOT_SUPPORT;
     }
-    return ret;
+    return HDF_SUCCESS;
+}
+
+static int32_t AdcManagerBind(struct HdfDeviceObject *device)
+{
+    (void)device;
+    return HDF_SUCCESS;
 }
 
 static int32_t AdcManagerInit(struct HdfDeviceObject *device)
@@ -391,6 +476,7 @@ static void AdcManagerRelease(struct HdfDeviceObject *device)
 
 struct HdfDriverEntry g_adcManagerEntry = {
     .moduleVersion = 1,
+    .Bind = AdcManagerBind,
     .Init = AdcManagerInit,
     .Release = AdcManagerRelease,
     .moduleName = "HDF_PLATFORM_ADC_MANAGER",
diff --git a/support/platform/src/adc/adc_if_u.c b/support/platform/src/adc/adc_if_u.c
new file mode 100644
index 00000000..e369d114
--- /dev/null
+++ b/support/platform/src/adc/adc_if_u.c
@@ -0,0 +1,158 @@
+/*
+ * Copyright (c) 2022 Huawei Device Co., Ltd.
+ *
+ * HDF is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ * See the LICENSE file in the root of this repository for complete details.
+ */
+
+#include "hdf_io_service_if.h"
+#include "hdf_log.h"
+#include "adc_if.h"
+
+#define HDF_LOG_TAG adc_if_u_c
+#define ADC_SERVICE_NAME "HDF_PLATFORM_ADC_MANAGER"
+
+static void *AdcManagerGetService(void)
+{
+    static void *manager = NULL;
+
+    if (manager != NULL) {
+        return manager;
+    }
+    manager = (void *)HdfIoServiceBind(ADC_SERVICE_NAME);
+    if (manager == NULL) {
+        HDF_LOGE("%s: fail to get adc manager!", __func__);
+    }
+    return manager;
+}
+
+DevHandle AdcOpen(uint32_t number)
+{
+    int32_t ret;
+    struct HdfIoService *service = NULL;
+    struct HdfSBuf *data = NULL;
+    struct HdfSBuf *reply = NULL;
+    uint32_t handle;
+
+    service = (struct HdfIoService *)AdcManagerGetService();
+    if (service == NULL) {
+        return NULL;
+    }
+    data = HdfSbufObtainDefaultSize();
+    if (data == NULL) {
+        HDF_LOGE("%s: malloc data fail!", __func__);
+        return NULL;
+    }
+    reply = HdfSbufObtainDefaultSize();
+    if (reply == NULL) {
+        HDF_LOGE("%s: malloc reply fail!", __func__);
+        HdfSbufRecycle(data);
+        return NULL;
+    }
+
+    if (!HdfSbufWriteUint32(data, (uint32_t)number)) {
+        HDF_LOGE("%s: write number fail!", __func__);
+        goto ERR;
+    }
+
+    ret = service->dispatcher->Dispatch(&service->object, ADC_IO_OPEN, data, reply);
+    if (ret != HDF_SUCCESS) {
+        HDF_LOGE("%s: service call open fail:%d", __func__, ret);
+        goto ERR;
+    }
+
+    if (!HdfSbufReadUint32(reply, &handle)) {
+        HDF_LOGE("%s: read handle fail!", __func__);
+        goto ERR;
+    }
+    HdfSbufRecycle(data);
+    HdfSbufRecycle(reply);
+    return (DevHandle)(uintptr_t)handle;
+ERR:
+    HdfSbufRecycle(data);
+    HdfSbufRecycle(reply);
+    return NULL;
+}
+
+void AdcClose(DevHandle handle)
+{
+    int32_t ret;
+    struct HdfIoService *service = NULL;
+    struct HdfSBuf *data = NULL;
+
+    service = (struct HdfIoService *)AdcManagerGetService();
+    if (service == NULL) {
+        return;
+    }
+
+    data = HdfSbufObtainDefaultSize();
+    if (data == NULL) {
+        return;
+    }
+
+    if (!HdfSbufWriteUint32(data, (uint32_t)(uintptr_t)handle)) {
+        HDF_LOGE("%s: write handle fail!", __func__);
+        HdfSbufRecycle(data);
+        return;
+    }
+
+    ret = service->dispatcher->Dispatch(&service->object, ADC_IO_CLOSE, data, NULL);
+    if (ret != HDF_SUCCESS) {
+        HDF_LOGE("%s: close handle fail:%d", __func__, ret);
+    }
+    HdfSbufRecycle(data);
+}
+
+int32_t AdcRead(DevHandle handle, uint32_t channel, uint32_t *val)
+{
+    int32_t ret;
+    struct HdfSBuf *data = NULL;
+    struct HdfSBuf *reply = NULL;
+    struct HdfIoService *service = NULL;
+	
+    service = (struct HdfIoService *)AdcManagerGetService();
+    if (service == NULL) {
+        return HDF_PAL_ERR_DEV_CREATE;
+    }
+
+    data = HdfSbufObtainDefaultSize();
+    if (data == NULL) {
+        HDF_LOGE("%s: failed to obtain data!", __func__);
+        return HDF_ERR_MALLOC_FAIL;
+    }
+
+    reply = HdfSbufObtainDefaultSize();
+    if (reply == NULL) {
+        HdfSbufRecycle(data);
+        return HDF_ERR_MALLOC_FAIL;
+    }
+
+    if (!HdfSbufWriteUint32(data, (uint32_t)(uintptr_t)handle)) {
+        HDF_LOGE("%s: write handle fail!", __func__);
+	    ret = HDF_ERR_IO;
+        goto EXIT;
+    }
+    if (!HdfSbufWriteUint32(data, (uint32_t)channel)) {
+        HDF_LOGE("%s: write adc number failed!", __func__);
+	    ret = HDF_ERR_IO;
+        goto EXIT;
+    }
+    ret = service->dispatcher->Dispatch(&service->object, ADC_IO_READ, data, reply);
+    if (ret != HDF_SUCCESS) {
+        HDF_LOGE("%s: failed to send service call:%d", __func__, ret);
+        goto EXIT;
+    }
+
+	if (!HdfSbufReadUint32(reply, val)) {
+	    HDF_LOGE("%s: read sbuf failed", __func__);
+	    ret = HDF_ERR_IO;
+        goto EXIT;
+    }
+
+    goto EXIT;
+EXIT:
+	HdfSbufRecycle(data);
+	HdfSbufRecycle(reply);
+    return ret;
+}
diff --git a/support/platform/test/unittest/common/hdf_adc_test.cpp b/support/platform/test/unittest/common/hdf_adc_test.cpp
index a486d7ea..0521591c 100644
--- a/support/platform/test/unittest/common/hdf_adc_test.cpp
+++ b/support/platform/test/unittest/common/hdf_adc_test.cpp
@@ -55,6 +55,11 @@ HWTEST_F(HdfLiteAdcTest, AdcTestRead001, TestSize.Level1)
 {
     struct HdfTestMsg msg = {TEST_PAL_ADC_TYPE, ADC_TEST_CMD_READ, -1};
     EXPECT_EQ(0, HdfTestSendMsgToService(&msg));
+
+    printf("%s: kernel test done, then for user...\n", __func__);
+    EXPECT_EQ(0, AdcTestExecute(ADC_TEST_CMD_READ));
+    printf("%s: exit!\n", __func__);
+
 }
 
 /**
@@ -67,6 +72,11 @@ HWTEST_F(HdfLiteAdcTest, AdcTestMultiThread001, TestSize.Level1)
 {
     struct HdfTestMsg msg = {TEST_PAL_ADC_TYPE, ADC_TEST_CMD_MULTI_THREAD, -1};
     EXPECT_EQ(0, HdfTestSendMsgToService(&msg));
+
+    printf("%s: kernel test done, then for user...\n", __func__);
+    EXPECT_EQ(0, AdcTestExecute(ADC_TEST_CMD_MULTI_THREAD));
+    printf("%s: exit!\n", __func__);
+
 }
 
 /**
@@ -79,5 +89,10 @@ HWTEST_F(HdfLiteAdcTest, AdcTestReliability001, TestSize.Level1)
 {
     struct HdfTestMsg msg = {TEST_PAL_ADC_TYPE, ADC_TEST_CMD_RELIABILITY, -1};
     EXPECT_EQ(0, HdfTestSendMsgToService(&msg));
+
+    printf("%s: kernel test done, then for user...\n", __func__);
+    EXPECT_EQ(0, AdcTestExecute(ADC_TEST_CMD_RELIABILITY));
+    printf("%s: exit!\n", __func__);
+
 }
 
diff --git a/test/unittest/platform/common/adc_test.c b/test/unittest/platform/common/adc_test.c
index 3cdc10f0..718b1864 100644
--- a/test/unittest/platform/common/adc_test.c
+++ b/test/unittest/platform/common/adc_test.c
@@ -37,7 +37,7 @@ static int32_t AdcTestGetConfig(struct AdcTestConfig *config)
         return HDF_ERR_NOT_SUPPORT;
     }
 
-    reply = HdfSBufObtain(sizeof(*config) + sizeof(uint64_t));
+    reply = HdfSbufObtain(sizeof(*config) + sizeof(uint64_t));
     if (reply == NULL) {
         HDF_LOGE("%s: failed to obtain reply", __func__);
         return HDF_ERR_MALLOC_FAIL;
@@ -113,7 +113,7 @@ int32_t AdcTestRead(void)
         value[i] = 0;
         ret = AdcRead(tester->handle, tester->config.channel, &value[i]);
         if (ret != HDF_SUCCESS || value[i] >= (1U << tester->config.dataWidth)) {
-            HDF_LOGE("%s: read value invalid:%u, ret:%d", __func__, value[i], ret);
+            HDF_LOGE("%s: read value failed, ret:%d", __func__, ret);
             return HDF_ERR_IO;
         }
     }
@@ -141,6 +141,7 @@ static int AdcTestThreadFunc(void *param)
         ret = AdcRead(tester->handle, tester->config.channel, &val);
         if (ret != HDF_SUCCESS) {
             HDF_LOGE("%s: AdcRead failed, ret:%d", __func__, ret);
+            *((int32_t *)param) = 1;
             return HDF_ERR_IO;
         }
     }
@@ -155,9 +156,9 @@ int32_t AdcTestMultiThread(void)
     int32_t ret;
     struct OsalThread thread1, thread2;
     struct OsalThreadParam cfg1, cfg2;
-    int32_t count1, count2;
+    int32_t count1 = 0; 
+    int32_t count2 = 0;
 
-    count1 = count2 = 0;
     HDF_LOGI("%s: enter", __func__);
     ret = OsalThreadCreate(&thread1, (OsalThreadEntry)AdcTestThreadFunc, (void *)&count1);
     if (ret != HDF_SUCCESS) {