diff --git a/APP_Framework/Applications/main.c b/APP_Framework/Applications/main.c
index 3a12d762f..b9d1a8d62 100644
--- a/APP_Framework/Applications/main.c
+++ b/APP_Framework/Applications/main.c
@@ -17,6 +17,7 @@
 
 extern int FrameworkInit();
 extern void ApplicationOtaTaskInit(void);
+extern void Ch4As830(void);
 int main(void)
 {
 	printf("Hello, world!\n");
@@ -24,6 +25,7 @@ int main(void)
 #ifdef APPLICATION_OTA
 	ApplicationOtaTaskInit();
 #endif
+	Ch4As830();
     return 0;
 }
 // int cppmain(void);
diff --git a/APP_Framework/Applications/sensor_app/Kconfig b/APP_Framework/Applications/sensor_app/Kconfig
index 86eaeb7cd..124beb459 100755
--- a/APP_Framework/Applications/sensor_app/Kconfig
+++ b/APP_Framework/Applications/sensor_app/Kconfig
@@ -5,6 +5,16 @@ menu "sensor app"
         default n
 
         if APPLICATION_SENSOR
+            menuconfig APPLICATION_SENSOR_CH4
+                bool "Using sensor CH4 apps"
+                default n
+
+                if APPLICATION_SENSOR_CH4
+                    config APPLICATION_SENSOR_CH4_AS830
+                    bool "Using sensor AS830 apps"
+                    default n
+                endif
+
             menuconfig APPLICATION_SENSOR_CO2
                 bool "Using sensor CO2 apps"
                 default n
diff --git a/APP_Framework/Applications/sensor_app/Makefile b/APP_Framework/Applications/sensor_app/Makefile
index 63010b016..63b624505 100644
--- a/APP_Framework/Applications/sensor_app/Makefile
+++ b/APP_Framework/Applications/sensor_app/Makefile
@@ -1,5 +1,9 @@
 SRC_FILES := 
 
+ifeq ($(CONFIG_APPLICATION_SENSOR_CH4_AS830), y)
+	SRC_FILES += ch4_as830.c
+endif
+
 ifeq ($(CONFIG_APPLICATION_SENSOR_CO2_ZG09), y)
 	SRC_FILES += co2_zg09.c
 endif
diff --git a/APP_Framework/Applications/sensor_app/ch4_as830.c b/APP_Framework/Applications/sensor_app/ch4_as830.c
new file mode 100644
index 000000000..7de5f14f6
--- /dev/null
+++ b/APP_Framework/Applications/sensor_app/ch4_as830.c
@@ -0,0 +1,34 @@
+/*
+* Copyright (c) 2020 AIIT XUOS Lab
+* XiUOS is licensed under Mulan PSL v2.
+* You can use this software according to the terms and conditions of the Mulan PSL v2.
+* You may obtain a copy of Mulan PSL v2 at:
+*        http://license.coscl.org.cn/MulanPSL2
+* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+* See the Mulan PSL v2 for more details.
+*/
+
+/**
+ * @file ch4_as830.c
+ * @brief CH4 AS830 example
+ * @version 1.0
+ * @author AIIT XUOS Lab
+ * @date 2021.12.10
+ */
+
+#include <user_api.h>
+#include <sensor.h>
+
+/**
+ * @description: Read a ch4
+ * @return 0
+ */
+void Ch4As830(void)
+{
+    struct SensorQuantity *ch4 = SensorQuantityFind(SENSOR_QUANTITY_AS830_CH4, SENSOR_QUANTITY_CH4);
+    SensorQuantityOpen(ch4);
+    printf("CH4 : %d %%LTL\n", SensorQuantityRead(ch4));
+    SensorQuantityClose(ch4);
+}
\ No newline at end of file
diff --git a/APP_Framework/Framework/sensor/Kconfig b/APP_Framework/Framework/sensor/Kconfig
index a8ffcb82c..669c26cd2 100644
--- a/APP_Framework/Framework/sensor/Kconfig
+++ b/APP_Framework/Framework/sensor/Kconfig
@@ -4,6 +4,13 @@ menuconfig SUPPORT_SENSOR_FRAMEWORK
         select TRANSFORM_LAYER_ATTRIUBUTE
 
 if SUPPORT_SENSOR_FRAMEWORK
+        menuconfig SENSOR_CH4
+                bool "Using Ch4 sensor device"
+                default n
+        if SENSOR_CH4
+        source "$APP_DIR/Framework/sensor/ch4/Kconfig"
+        endif
+
         menuconfig SENSOR_CO2
                 bool "Using CO2 sensor device"
                 default n
diff --git a/APP_Framework/Framework/sensor/Makefile b/APP_Framework/Framework/sensor/Makefile
index d3772dcba..d8cdf1418 100644
--- a/APP_Framework/Framework/sensor/Makefile
+++ b/APP_Framework/Framework/sensor/Makefile
@@ -1,5 +1,9 @@
 SRC_FILES := sensor.c
 
+ifeq ($(CONFIG_SENSOR_CH4),y)
+	SRC_DIR += ch4
+endif
+
 ifeq ($(CONFIG_SENSOR_CO2),y)
 	SRC_DIR += co2
 endif
diff --git a/APP_Framework/Framework/sensor/ch4/Kconfig b/APP_Framework/Framework/sensor/ch4/Kconfig
new file mode 100644
index 000000000..7f3ef3d23
--- /dev/null
+++ b/APP_Framework/Framework/sensor/ch4/Kconfig
@@ -0,0 +1,43 @@
+
+config SENSOR_AS830
+        bool "Using as830"
+        default n
+
+        if SENSOR_AS830
+                config SENSOR_DEVICE_AS830
+                        string "as830 sensor name"
+                        default "as830_1"
+                
+                config SENSOR_QUANTITY_AS830_CH4
+                        string "as830 quantity name"
+                        default "ch4_1"
+                
+                if ADD_XIUOS_FETURES
+                        config SENSOR_AS830_DRIVER_EXTUART
+                                bool "Using extra uart to support as830"
+                                default y
+
+                        config SENSOR_DEVICE_AS830_DEV
+                                string "as830 device uart path"
+                                default "/dev/uart2_dev2"
+                                depends on !SENSOR_AS830_DRIVER_EXTUART
+
+                        if SENSOR_AS830_DRIVER_EXTUART
+                                config SENSOR_DEVICE_AS830_DEV
+                                        string "as830 device extra uart path"
+                                        default "/dev/extuart_dev4"
+
+                                config SENSOR_DEVICE_AS830_DEV_EXT_PORT
+                                        int "if AS830 device using extuart, choose port"
+                                        default "4"
+                        endif
+                endif
+
+                if ADD_NUTTX_FETURES
+
+                endif
+
+                if ADD_RTTHREAD_FETURES
+
+                endif                
+        endif
diff --git a/APP_Framework/Framework/sensor/ch4/Makefile b/APP_Framework/Framework/sensor/ch4/Makefile
new file mode 100644
index 000000000..913dda125
--- /dev/null
+++ b/APP_Framework/Framework/sensor/ch4/Makefile
@@ -0,0 +1,5 @@
+ifeq ($(CONFIG_SENSOR_AS830),y)
+	SRC_DIR += as830
+endif
+
+include $(KERNEL_ROOT)/compiler.mk
diff --git a/APP_Framework/Framework/sensor/ch4/as830/Makefile b/APP_Framework/Framework/sensor/ch4/as830/Makefile
new file mode 100644
index 000000000..bc432574b
--- /dev/null
+++ b/APP_Framework/Framework/sensor/ch4/as830/Makefile
@@ -0,0 +1,3 @@
+SRC_FILES := as830.c
+
+include $(KERNEL_ROOT)/compiler.mk
diff --git a/APP_Framework/Framework/sensor/ch4/as830/as830.c b/APP_Framework/Framework/sensor/ch4/as830/as830.c
new file mode 100644
index 000000000..1a5d90201
--- /dev/null
+++ b/APP_Framework/Framework/sensor/ch4/as830/as830.c
@@ -0,0 +1,223 @@
+/*
+* Copyright (c) 2020 AIIT XUOS Lab
+* XiUOS is licensed under Mulan PSL v2.
+* You can use this software according to the terms and conditions of the Mulan PSL v2.
+* You may obtain a copy of Mulan PSL v2 at:
+*        http://license.coscl.org.cn/MulanPSL2
+* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+* See the Mulan PSL v2 for more details.
+*/
+
+/**
+ * @file as830.c
+ * @brief AS830 CH4 driver base sensor
+ * @version 1.0
+ * @author AIIT XUOS Lab
+ * @date 2021.12.10
+ */
+
+#include <sensor.h>
+
+static struct SensorDevice as830;
+
+static struct SensorProductInfo info =
+{
+    SENSOR_ABILITY_CH4,
+    "xxxxx",
+    "AS830",
+};
+
+/**
+ * @description: Open AS830 sensor device
+ * @param sdev - sensor device pointer
+ * @return success: 1 , failure: other
+ */
+static int SensorDeviceOpen(struct SensorDevice *sdev)
+{
+    int result = 0;
+
+    sdev->fd = PrivOpen(SENSOR_DEVICE_AS830_DEV, O_RDWR);
+    
+    struct SerialDataCfg cfg;
+    cfg.serial_baud_rate    = BAUD_RATE_9600;
+    cfg.serial_data_bits    = DATA_BITS_8;
+    cfg.serial_stop_bits    = STOP_BITS_1;
+    cfg.serial_buffer_size  = 128;
+    cfg.serial_parity_mode  = PARITY_NONE;
+    cfg.serial_bit_order    = 0;
+    cfg.serial_invert_mode  = 0;
+#ifdef SENSOR_AS830_DRIVER_EXTUART
+    cfg.ext_uart_no         = SENSOR_DEVICE_AS830_DEV_EXT_PORT;
+    cfg.port_configure      = PORT_CFG_INIT;
+#endif
+
+    struct PrivIoctlCfg ioctl_cfg;
+    ioctl_cfg.ioctl_driver_type = SERIAL_TYPE;
+    ioctl_cfg.args = &cfg;
+    result = PrivIoctl(sdev->fd, OPE_INT, &ioctl_cfg);
+
+    sdev->done->ioctl(sdev, SENSOR_DEVICE_PASSIVE);
+
+    return result;
+}
+
+/**
+ * @description: Read sensor device
+ * @param sdev - sensor device pointer
+ * @param len - the length of the read data
+ * @return get data length
+ */
+static int SensorDeviceRead(struct SensorDevice *sdev, size_t len)
+{
+    uint8_t tmp = 0;
+    uint8_t idx = 0;
+
+    while (1) {
+        if (PrivRead(sdev->fd, &tmp, 1) == 1) {
+            sdev->buffer[idx++] = tmp;
+        }
+        if(0xA == tmp){
+            break;
+        }
+    }
+
+    return idx;
+}
+
+static struct SensorDone done =
+{
+    SensorDeviceOpen,
+    NULL,
+    SensorDeviceRead,
+    NULL,
+    NULL,
+};
+
+/**
+ * @description: Init AS830 sensor and register
+ * @return void
+ */
+static void SensorDeviceAs830Init(void)
+{
+    as830.name = SENSOR_DEVICE_AS830;
+    as830.info = &info;
+    as830.done = &done;
+
+    SensorDeviceRegister(&as830);
+}
+
+
+/* check data*/
+static uint8_t CH4_check(uint8_t *packet)
+{
+    uint8_t i, high, low;
+    uint8_t checksum = 0;
+    for( i = 0; i < 10; i++)
+    {
+		if(packet[i] == 0x09)
+			break;
+        checksum += packet[i];
+    }
+    checksum = (unsigned char)(-(signed char)checksum);
+	high = (checksum & 0xF0) >> 4;
+	if((high <= 0x0F) && (high >= 0x0A))
+		high += 0x37;
+	else if((high <= 0x09) && (high >= 0x00))
+		high += 0x30;
+	low = (checksum & 0x0F);
+	if((low <= 0x0F) && (low >= 0x0A))
+		low += 0x37;
+	else if((low <= 0x09) && (low >= 0x00))
+		low += 0x30;
+	if((high == packet[i + 1]) && (low == packet[i + 2]))
+		return 0;
+    
+    return -1;
+}
+
+
+static struct SensorQuantity as830_ch4;
+
+/**
+ * @description: Analysis AS830 CH4 result
+ * @param quant - sensor quantity pointer
+ * @return quantity value
+ */
+static int32_t QuantityRead(struct SensorQuantity *quant)
+{
+    if (!quant)
+        return -1;
+
+    uint32_t result;
+    uint32_t len = 0;
+    if (quant->sdev->done->read != NULL) {
+        if(quant->sdev->status == SENSOR_DEVICE_PASSIVE) {
+            len = quant->sdev->done->read(quant->sdev, 7);
+            if (len == 0)
+            {
+                printf("error read data length = 0.\n");
+                return -1;
+            }
+
+            if(CH4_check(quant->sdev->buffer) == 0)
+            {
+                for(int i = 0; i < len; i++)
+                {
+                    if(quant->sdev->buffer[i] == 0x09)
+                    {
+                        break;
+                    }
+                    result = result *10 + (quant->sdev->buffer[i] - 0x30);
+                }
+
+                if (result > quant->value.max_value)
+                    quant->value.max_value = result;
+                else if (result < quant->value.min_value)
+                    quant->value.min_value = result;
+                quant->value.last_value = result;
+
+                return result;
+            }
+            else
+            {
+                printf("This reading is wrong\n");
+                result = SENSOR_QUANTITY_VALUE_ERROR;
+                return result;
+            }
+        }
+        if (quant->sdev->status == SENSOR_DEVICE_ACTIVE) 
+        {
+            printf("Please set passive mode.\n");
+        }
+    }else{
+        printf("%s don't have read done.\n", quant->name);
+    }
+    
+    return -1;
+}
+
+/**
+ * @description: Init AS830 CH4 quantity and register
+ * @return 0
+ */
+int As830Ch4Init(void)
+{
+    SensorDeviceAs830Init();
+    
+    as830_ch4.name = SENSOR_QUANTITY_AS830_CH4;
+    as830_ch4.type = SENSOR_QUANTITY_CH4;
+    as830_ch4.value.decimal_places = 0;
+    as830_ch4.value.max_std = 1000;
+    as830_ch4.value.min_std = 350;
+    as830_ch4.value.last_value = SENSOR_QUANTITY_VALUE_ERROR;
+    as830_ch4.value.max_value = SENSOR_QUANTITY_VALUE_ERROR;
+    as830_ch4.value.min_value = SENSOR_QUANTITY_VALUE_ERROR;
+    as830_ch4.sdev = &as830;
+    as830_ch4.ReadValue = QuantityRead;
+
+    SensorQuantityRegister(&as830_ch4);
+
+    return 0;
+}
\ No newline at end of file
diff --git a/APP_Framework/Framework/sensor/sensor.h b/APP_Framework/Framework/sensor/sensor.h
index 801f7991d..a9bcecbc1 100644
--- a/APP_Framework/Framework/sensor/sensor.h
+++ b/APP_Framework/Framework/sensor/sensor.h
@@ -51,6 +51,7 @@ extern "C" {
 #define SENSOR_ABILITY_CO       ((uint32_t)(1 << SENSOR_QUANTITY_CO))
 #define SENSOR_ABILITY_PM       ((uint32_t)(1 << SENSOR_QUANTITY_PM))
 #define SENSOR_ABILITY_VOICE    ((uint32_t)(1 << SENSOR_QUANTITY_VOICE))
+#define SENSOR_ABILITY_CH4      ((uint32_t)(1 << SENSOR_QUANTITY_CH4))
 
 struct SensorProductInfo {
     uint32_t ability;           /* Bitwise OR of sensor ability */
@@ -89,6 +90,7 @@ enum SensorQuantityType {
     SENSOR_QUANTITY_CO,
     SENSOR_QUANTITY_PM,
     SENSOR_QUANTITY_VOICE,
+    SENSOR_QUANTITY_CH4,
     /* ...... */
     SENSOR_QUANTITY_END,
 };
diff --git a/Ubiquitous/XiUOS/board/gapuino/board.c b/Ubiquitous/XiUOS/board/gapuino/board.c
index 836151f1a..d484bd3da 100755
--- a/Ubiquitous/XiUOS/board/gapuino/board.c
+++ b/Ubiquitous/XiUOS/board/gapuino/board.c
@@ -30,6 +30,23 @@ extern void timer_initialize(void);
 extern void gapuino_sysinit(void);
 
 extern unsigned int __bss_end__;
+/* Return core id. */
+uint32_t _procid( void )
+{
+    uint32_t ulProcid = 0;
+    __asm__ volatile( "csrr %0, mhartid" : "=r"( ulProcid ) );
+    ulProcid  = ulProcid & 0xf;
+    return ( ulProcid );
+}
+
+/* Return cluster id. */
+uint32_t _clusterid( void )
+{
+    uint32_t ulCluster = 0;
+    __asm__ volatile( "csrr %0, mhartid" : "=r"( ulCluster ) );
+    ulCluster  = ulCluster >> 5;
+    return ( ulCluster );
+}
 
 void GapuinoStart(uint32_t mhartid)
 {
@@ -51,7 +68,7 @@ void InitBoardHardware(void)
     timer_initialize();
     KPrintf("memory address range: [0x%08x - 0x%08x], size: %d\n", (x_ubase) MEMORY_START_ADDRESS, (x_ubase) MEMORY_END_ADDRESS, GAP8_SRAM_SIZE);
     /* initialize memory system */
-	
+	KPrintf("gap8 cluster id: [0x%x], _procid: [0x%x]\n", _clusterid(),_procid());
     KPrintf("board init done.\n");
 	KPrintf("start kernel...\n");
     return;