diff --git a/devices/ec200s/Makefile b/devices/ec200s/Makefile
new file mode 100644
index 00000000..0ae50fff
--- /dev/null
+++ b/devices/ec200s/Makefile
@@ -0,0 +1,36 @@
+###################################################################
+#automatic detection QTOP and LOCALDIR
+CUR_DIR := $(patsubst %/,%,$(dir $(realpath $(firstword $(MAKEFILE_LIST)))))
+TRYQTOP := $(shell if [ -n "$$QTOP" ] ; then\
+        echo $$QTOP;\
+        else\
+        cd $(CUR_DIR); while /usr/bin/test ! -d qmk ; do \
+        dir=`cd ../;pwd`;                       \
+        if [ "$$dir" = "/" ] ; then             \
+           echo Cannot find QTOP in $(firstword $(MAKEFILE_LIST)) 1>&2; \
+           exit 1;                              \
+        fi ;                                    \
+        cd $$dir;                               \
+        done ;                                  \
+        pwd;                                    \
+        fi)
+QTOP ?= $(realpath ${TRYQTOP})
+
+ifeq ($(QTOP),)
+$(error Please run this in a tree)
+endif
+LOCALDIR = $(patsubst %/,%,$(subst $(realpath $(QTOP))/,,$(CUR_DIR)))
+
+####################################################################
+
+
+TREE_LIB_ENABLE=0
+lib=
+subdirs=
+
+CFGFLAGS += -I$(QTOP)/net/at/include
+CFGFLAGS += -I$(QTOP)/net/sal_module_wrapper
+
+include ${QTOP}/qmk/generic/Make.tpl
+
+
diff --git a/devices/ec200s/ec200s.c b/devices/ec200s/ec200s.c
new file mode 100644
index 00000000..87562879
--- /dev/null
+++ b/devices/ec200s/ec200s.c
@@ -0,0 +1,570 @@
+/*----------------------------------------------------------------------------
+ * Tencent is pleased to support the open source community by making TencentOS
+ * available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ * If you have downloaded a copy of the TencentOS binary from Tencent, please
+ * note that the TencentOS binary is licensed under the BSD 3-Clause License.
+ *
+ * If you have downloaded a copy of the TencentOS source code from Tencent,
+ * please note that TencentOS source code is licensed under the BSD 3-Clause
+ * License, except for the third-party components listed below which are
+ * subject to different license terms. Your integration of TencentOS into your
+ * own projects may require compliance with the BSD 3-Clause License, as well
+ * as the other licenses applicable to the third-party components included
+ * within TencentOS.
+ *---------------------------------------------------------------------------*/
+
+#include "ec200s.h"
+#include "tos_at.h"
+#include "tos_hal.h"
+#include "sal_module_wrapper.h"
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <ctype.h>
+
+typedef struct ip_addr_st {
+    uint8_t seg1;
+    uint8_t seg2;
+    uint8_t seg3;
+    uint8_t seg4;
+}ip_addr_t;
+
+static ip_addr_t domain_parser_addr = {0};
+k_sem_t domain_parser_sem;
+
+static int ec200s_echo_close(void)
+{
+    at_echo_t echo;
+    int try = 0;
+
+    tos_at_echo_create(&echo, NULL, 0, NULL);
+    
+    while (try++ < 10) {
+        tos_at_cmd_exec(&echo, 1000, "ATE0\r\n");
+        if (echo.status == AT_ECHO_STATUS_OK) {
+            return 0;
+        }
+    }
+
+    return -1;
+}
+static int ec200s_sim_card_check(void)
+{
+    at_echo_t echo;
+    int try = 0;
+    char echo_buffer[32];
+	
+    tos_at_echo_create(&echo, echo_buffer, sizeof(echo_buffer), NULL);
+    while (try++ < 10) {
+        tos_at_cmd_exec(&echo, 1000, "AT+CPIN?\r\n");
+        if (echo.status != AT_ECHO_STATUS_OK) {
+                return -1;
+        }
+
+        if(strstr(echo.buffer, "READY"))
+        {
+            return 0;
+        }
+    }
+    return -1;
+}
+
+static int ec200s_signal_quality_check(void)
+{
+    int rssi, ber;
+    at_echo_t echo;
+    char echo_buffer[32], *str;
+    int try = 0;
+	
+    tos_at_echo_create(&echo, echo_buffer, sizeof(echo_buffer), NULL);
+    while (try++ < 10) 
+    {
+        tos_at_cmd_exec(&echo, 1000, "AT+CSQ\r\n");
+        if (echo.status != AT_ECHO_STATUS_OK)
+        {
+            return -1;
+        }
+
+        str = strstr(echo.buffer, "+CSQ:");
+        if (!str) 
+        {
+            return -1;
+        }
+        sscanf(str, "+CSQ:%d,%d", &rssi, &ber);
+        if (rssi != 99) {
+            return 0;
+        }
+    }
+
+    return -1;
+}
+static int ec200s_gsm_network_check(void)
+{
+    int n, stat;
+    at_echo_t echo;
+    char echo_buffer[32], *str;
+    int try = 0;
+	
+    tos_at_echo_create(&echo, echo_buffer, sizeof(echo_buffer), NULL);
+    while (try++ < 10)
+    {
+        tos_at_cmd_exec(&echo, 1000, "AT+CREG?\r\n");
+        if (echo.status != AT_ECHO_STATUS_OK) {
+            return -1;
+        }
+
+        str = strstr(echo.buffer, "+CREG:");
+        if (!str) 
+        {
+            return -1;
+        }
+        sscanf(str, "+CREG:%d,%d", &n, &stat);
+        if (stat == 1) {
+            return 0;
+        }
+    }
+    return -1;	
+}
+
+static int ec200s_gprs_network_check(void)
+{
+    int n, stat;
+    at_echo_t echo;
+    char echo_buffer[32], *str;
+    int try = 0;
+
+    tos_at_echo_create(&echo, echo_buffer, sizeof(echo_buffer), NULL);
+    while (try++ < 10)
+    {
+       
+        tos_at_cmd_exec(&echo, 1000, "AT+CGREG?\r\n");
+        if (echo.status != AT_ECHO_STATUS_OK)
+        {
+            return -1;
+        }
+
+        str = strstr(echo.buffer, "+CGREG:");
+        if (!str) 
+        {
+            return -1;
+        }
+        sscanf(str, "+CGREG:%d,%d", &n, &stat);
+        if (stat == 1)
+        {
+            return 0;
+        }
+    }
+		
+    return -1;	
+}
+
+static int ec200s_close_apn(void)
+{
+    at_echo_t echo;
+
+    tos_at_echo_create(&echo, NULL, 0, NULL);
+    tos_at_cmd_exec(&echo, 3000, "AT+QIDEACT=1\r\n");
+    if (echo.status == AT_ECHO_STATUS_OK)
+    {
+        return 0;
+    }
+   
+    return -1;
+}
+
+static int ec200s_set_apn(void)
+{
+    at_echo_t echo;
+
+    tos_at_echo_create(&echo, NULL, 0, NULL);
+    tos_at_cmd_exec(&echo, 300, "AT+QICSGP=1,1,\"CMNET\"\r\n");
+    if (echo.status != AT_ECHO_STATUS_OK)
+    {
+        return -1;
+    }
+
+    tos_at_cmd_exec_until(&echo, 3000, "AT+QIACT=1\r\n");
+    if (echo.status != AT_ECHO_STATUS_OK)
+    {
+        return -1;
+    }	
+
+    return 0;
+}
+
+static int ec200s_init(void)
+{
+    printf("Init ec200s ...\n" );
+
+    if (ec200s_echo_close() != 0)
+    {
+        printf("echo close failed,please check your module\n");
+        return -1;
+    }
+		
+    if(ec200s_sim_card_check() != 0)
+    {
+        printf("sim card check failed,please insert your card\n");
+        return -1;
+    }
+
+    if (ec200s_signal_quality_check() != 0)
+    {
+        printf("signal quality check status failed\n");
+        return -1;
+    }
+		
+    if(ec200s_gsm_network_check() != 0)
+    {
+        printf("GSM network register status check fail\n");
+        return -1;
+    }
+    
+    if(ec200s_gprs_network_check() != 0)
+    {
+        printf("GPRS network register status check fail\n");
+        return -1;
+    }
+    
+    if(ec200s_close_apn() != 0)
+    {
+        printf("close apn failed\n");
+        return -1;
+    }
+		
+    if (ec200s_set_apn() != 0) {
+        printf("apn set FAILED\n");
+        return -1;
+    }
+
+    printf("Init ec200s ok\n" );
+    return 0;
+}
+
+static int ec200s_connect(const char *ip, const char *port, sal_proto_t proto)
+{
+    int id;
+    at_echo_t echo;
+
+    id = tos_at_channel_alloc(ip, port);
+    if (id == -1)
+    {
+        return -1;
+    }
+    
+    tos_at_cmd_exec(NULL, 1000, "AT+QICLOSE=%d\r\n", id);
+
+    tos_at_echo_create(&echo, NULL, 0, "CONNECT OK");
+    tos_at_cmd_exec(&echo, 4000, "AT+QIOPEN=1,%d,\"%s\",\"%s\",%d,0,1\r\n",
+                        id, proto == TOS_SAL_PROTO_UDP ? "UDP" : "TCP", ip, atoi(port));
+    if (echo.status == AT_ECHO_STATUS_OK)
+    {
+        return id;
+    }
+		
+    tos_at_channel_free(id);
+    return -1;
+}
+
+static int ec200s_recv_timeout(int id, void *buf, size_t len, uint32_t timeout)
+{
+    return tos_at_channel_read_timed(id, buf, len, timeout);
+}
+
+static int ec200s_recv(int id, void *buf, size_t len)
+{
+    return ec200s_recv_timeout(id, buf, len, (uint32_t)4000);
+}
+
+int ec200s_send(int id, const void *buf, size_t len)
+{
+    at_echo_t echo;
+
+    if (!tos_at_channel_is_working(id)) {
+        return -1;
+    }
+	
+    if (tos_at_global_lock_pend() != 0)
+    {
+        return -1;
+    }
+
+    tos_at_echo_create(&echo, NULL, 0, ">");
+
+    tos_at_cmd_exec(&echo, 1000, "AT+QISEND=%d,%d\r\n", id, len);
+
+    if (echo.status != AT_ECHO_STATUS_OK && echo.status != AT_ECHO_STATUS_EXPECT)
+    {
+        tos_at_global_lock_post();
+        return -1;
+    }
+
+    tos_at_echo_create(&echo, NULL, 0, "SEND OK");
+    tos_at_raw_data_send_until(&echo, 10000, (uint8_t *)buf, len);
+    if (echo.status != AT_ECHO_STATUS_OK && echo.status != AT_ECHO_STATUS_EXPECT)
+    {
+        tos_at_global_lock_post();
+        return -1;
+    }
+
+    tos_at_global_lock_post();
+
+    return len;
+}
+
+int ec200s_recvfrom_timeout(int id, void *buf, size_t len, uint32_t timeout)
+{
+    return tos_at_channel_read_timed(id, buf, len, timeout);
+}
+
+int ec200s_recvfrom(int id, void *buf, size_t len)
+{
+    return ec200s_recvfrom_timeout(id, buf, len, (uint32_t)4000);
+}
+
+int ec200s_sendto(int id, char *ip, char *port, const void *buf, size_t len)
+{
+    at_echo_t echo;
+
+    if (tos_at_global_lock_pend() != 0)
+	{
+        return -1;
+    }
+
+    tos_at_echo_create(&echo, NULL, 0, ">");
+
+    tos_at_cmd_exec(&echo, 1000, "AT+QISEND=%d,%d\r\n", id, len);
+
+    if (echo.status != AT_ECHO_STATUS_OK && echo.status != AT_ECHO_STATUS_EXPECT)
+    {
+        tos_at_global_lock_post();
+        return -1;
+    }
+
+    tos_at_echo_create(&echo, NULL, 0, "SEND OK");
+    tos_at_raw_data_send(&echo, 1000, (uint8_t *)buf, len);
+    if (echo.status != AT_ECHO_STATUS_OK && echo.status != AT_ECHO_STATUS_EXPECT)
+    {
+        tos_at_global_lock_post();
+        return -1;
+    }
+
+    tos_at_global_lock_post();
+
+    return len;
+}
+
+static void ec200s_transparent_mode_exit(void)
+{
+    tos_at_cmd_exec(NULL, 500, "+++");
+}
+
+static int ec200s_close(int id)
+{
+    ec200s_transparent_mode_exit();
+
+    tos_at_cmd_exec(NULL, 1000, "AT+QICLOSE=%d\r\n", id);
+
+    tos_at_channel_free(id);
+
+    return 0;
+}
+
+static int ec200s_parse_domain(const char *host_name, char *host_ip, size_t host_ip_len)
+{
+    at_echo_t echo;
+    char echo_buffer[128];
+
+    tos_sem_create_max(&domain_parser_sem, 0, 1);
+
+    tos_at_echo_create(&echo, echo_buffer, sizeof(echo_buffer), NULL);
+    tos_at_cmd_exec(&echo, 2000, "AT+QIDNSGIP=1,\"%s\"\r\n", host_name);
+
+    if (echo.status != AT_ECHO_STATUS_OK) {
+        return -1;
+    }
+
+    tos_sem_pend(&domain_parser_sem, TOS_TIME_FOREVER);
+    snprintf(host_ip, host_ip_len, "%d.%d.%d.%d", domain_parser_addr.seg1, domain_parser_addr.seg2, domain_parser_addr.seg3, domain_parser_addr.seg4);
+    host_ip[host_ip_len - 1] = '\0';
+
+    printf("GOT IP: %s\n", host_ip);
+
+    return 0;
+}
+
+__STATIC__ void ec200s_incoming_data_process(void)
+{
+    uint8_t data;
+    int channel_id = 0, data_len = 0, read_len;
+    uint8_t buffer[128];
+
+    /*
+		+QIURC: "recv",<sockid>,<datalen>
+		<data content>
+    */
+	
+    while (1)
+    {
+        if (tos_at_uart_read(&data, 1) != 1)
+        {
+            return;
+        }
+
+        if (data == ',')
+        {
+            break;
+        }
+        channel_id = channel_id * 10 + (data - '0');
+    }
+
+    while (1)
+    {
+        if (tos_at_uart_read(&data, 1) != 1)
+        {
+            return;
+        }
+
+        if (data == '\r')
+        {
+            break;
+        }
+        data_len = data_len * 10 + (data - '0');
+    }
+
+    if (tos_at_uart_read(&data, 1) != 1)
+    {
+        return;
+    }
+		
+    do {
+#define MIN(a, b)   ((a) < (b) ? (a) : (b))
+        read_len = MIN(data_len, sizeof(buffer));
+        if (tos_at_uart_read(buffer, read_len) != read_len) {
+            return;
+        }
+
+        if (tos_at_channel_write(channel_id, buffer, read_len) <= 0) {
+            return;
+        }
+
+        data_len -= read_len;
+    } while (data_len > 0);
+
+    return;
+}
+
+__STATIC__ void ec200s_domain_data_process(void)
+{
+    uint8_t data;
+
+    /*
+        +QIURC: "dnsgip",0,1,600
+
+		+QIURC: "dnsgip","xxx.xxx.xxx.xxx"
+    */
+
+    if (tos_at_uart_read(&data, 1) != 1) {
+        return;
+    }
+
+    if (data == '0') {
+        return;
+    }
+    
+    if (data == '\"') {
+        /* start parser domain */
+        while (1) {
+            if (tos_at_uart_read(&data, 1) != 1) {
+                return;
+            }
+            if (data == '.') {
+                break;
+            }
+            domain_parser_addr.seg1 = domain_parser_addr.seg1 *10 + (data-'0');
+        }
+        while (1) {
+            if (tos_at_uart_read(&data, 1) != 1) {
+                return;
+            }
+            if (data == '.') {
+                break;
+            }
+            domain_parser_addr.seg2 = domain_parser_addr.seg2 *10 + (data-'0');
+        }
+        while (1) {
+            if (tos_at_uart_read(&data, 1) != 1) {
+                return;
+            }
+            if (data == '.') {
+                break;
+            }
+            domain_parser_addr.seg3 = domain_parser_addr.seg3 *10 + (data-'0');
+        }
+        while (1) {
+            if (tos_at_uart_read(&data, 1) != 1) {
+                return;
+            }
+            if (data == '\"') {
+                break;
+            }
+            domain_parser_addr.seg4 = domain_parser_addr.seg4 *10 + (data-'0');
+        }
+        tos_sem_post(&domain_parser_sem);
+    }
+    return;
+
+}
+
+at_event_t ec200s_at_event[] = {
+	{ "+QIURC: \"recv\",",   ec200s_incoming_data_process},
+    { "+QIURC: \"dnsgip\",", ec200s_domain_data_process},
+};
+
+sal_module_t sal_module_ec200s = {
+    .init           = ec200s_init,
+    .connect        = ec200s_connect,
+    .send           = ec200s_send,
+    .recv_timeout   = ec200s_recv_timeout,
+    .recv           = ec200s_recv,
+    .sendto         = ec200s_sendto,
+    .recvfrom       = ec200s_recvfrom,
+    .recvfrom_timeout = ec200s_recvfrom_timeout,
+    .close          = ec200s_close,
+    .parse_domain   = ec200s_parse_domain,
+};
+
+int ec200s_sal_init(hal_uart_port_t uart_port)
+{
+    if (tos_at_init(uart_port, ec200s_at_event,
+                        sizeof(ec200s_at_event) / sizeof(ec200s_at_event[0])) != 0) {
+        return -1;
+    }
+
+    if (tos_sal_module_register(&sal_module_ec200s) != 0) {
+        return -1;
+    }
+    if (tos_sal_module_init() != 0) {
+        return -1;
+    }
+		
+    return 0;
+}
+
+int ec200s_sal_deinit()
+{
+    int id = 0;
+
+    for (id = 0; id < AT_DATA_CHANNEL_NUM; ++id) {
+        tos_sal_module_close(id);
+    }
+
+    tos_sal_module_register_default();
+
+    tos_at_deinit();
+    
+    return 0;
+}
+
diff --git a/devices/ec200s/ec200s.h b/devices/ec200s/ec200s.h
new file mode 100644
index 00000000..56494800
--- /dev/null
+++ b/devices/ec200s/ec200s.h
@@ -0,0 +1,27 @@
+/*----------------------------------------------------------------------------
+ * Tencent is pleased to support the open source community by making TencentOS
+ * available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ * If you have downloaded a copy of the TencentOS binary from Tencent, please
+ * note that the TencentOS binary is licensed under the BSD 3-Clause License.
+ *
+ * If you have downloaded a copy of the TencentOS source code from Tencent,
+ * please note that TencentOS source code is licensed under the BSD 3-Clause
+ * License, except for the third-party components listed below which are
+ * subject to different license terms. Your integration of TencentOS into your
+ * own projects may require compliance with the BSD 3-Clause License, as well
+ * as the other licenses applicable to the third-party components included
+ * within TencentOS.
+ *---------------------------------------------------------------------------*/
+
+#ifndef __EC200S_H__
+#define __EC200S_H__
+
+#include "tos_hal.h"
+
+int ec200s_sal_init(hal_uart_port_t uart_port);
+int ec200s_sal_deinit(void);
+
+#endif /* __EC20_H__ */
+
diff --git a/examples/tcp_through_module/tcp_through_module.c b/examples/tcp_through_module/tcp_through_module.c
index 7d15a127..7bbe4882 100644
--- a/examples/tcp_through_module/tcp_through_module.c
+++ b/examples/tcp_through_module/tcp_through_module.c
@@ -6,6 +6,7 @@
 //#define USE_SIM800A
 //#define USE_BC26
 //#define USE_EC20
+//#define USE_EC200S
 
 #ifdef USE_ESP8266
 #include "esp8266.h"
@@ -23,6 +24,10 @@
 #include "ec20.h"
 #endif
 
+#ifdef USE_EC200S
+#include "ec200s.h"
+#endif
+
 #define TCP_TEST_TASK0_STK_SIZE         4096
 void tcp_test0(void);
 osThreadDef(tcp_test0, osPriorityNormal, 1, TCP_TEST_TASK0_STK_SIZE);
@@ -92,7 +97,9 @@ void application_entry(void *arg)
 #elif defined(USE_BC26)
     bc26_sal_init(HAL_UART_PORT_2);
 #elif defined(USE_EC20)
-    ec20_sal_deinit(HAL_PORT_0);
+    ec20_sal_init(HAL_UART_PORT_0);
+#elif defined(USE_EC200S)
+    ec200s_sal_init(HAL_UART_PORT_0);
 #endif
     
     socket_id_0 = tos_sal_module_connect("117.50.111.72", "8080", TOS_SAL_PROTO_TCP);