diff --git a/devices/m5313/m5313.c b/devices/m5313/m5313.c
new file mode 100644
index 00000000..8ffe6511
--- /dev/null
+++ b/devices/m5313/m5313.c
@@ -0,0 +1,525 @@
+#include "m5313.h"
+#include "tos_k.h"
+#include "tos_at.h"
+#include "tos_hal.h"
+#include "sal_module_wrapper.h"
+
+#include "stdio.h"
+#include "stdbool.h"
+#include "ctype.h"
+
+#define M5313_USE_MUX 1	//使用多路链接
+
+static int m5313_recv_timeout(int id, void *buf, size_t len, uint32_t timeout)
+{
+     return tos_at_channel_read_timed(id, buf, len, timeout);
+}
+
+static int m5313_recv(int id, void *buf, size_t len)
+{
+    return m5313_recv_timeout(id, buf, len, (uint32_t)10000);
+}
+
+static int m5313_connect(const char *ip, const char *port, sal_proto_t proto)
+{
+	int id;
+    at_echo_t echo;
+
+	char buffer[100];
+
+	id = tos_at_channel_alloc(ip, port);
+    if (id == -1) {
+        return -1;
+    }
+
+	sprintf(buffer,"%d,CONNECT OK\r\n",id);
+	
+	tos_at_echo_create(&echo, NULL, 0, buffer);
+	#if defined(M5313_USE_MUX)
+	tos_at_cmd_exec_until(&echo, 10000, "AT+IPSTART=%d,\"%s\",\"%s\",%s\r\n",id,
+						proto == TOS_SAL_PROTO_UDP ? "UDP" : "TCP",
+						ip,port);
+	#else
+	tos_at_cmd_exec_until(&echo, 10000, "AT+IPSTART=\"%s\",\"%s\",%s\r\n",
+						proto == TOS_SAL_PROTO_UDP ? "UDP" : "TCP",
+						ip,port);
+	#endif
+	if (echo.status == AT_ECHO_STATUS_EXPECT) {
+		return id;
+	}
+	tos_at_channel_free(id);
+	return -1;
+}
+
+
+static int m5313_send(int id, 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, ">");
+	#if defined(M5313_USE_MUX)
+	tos_at_cmd_exec_until(&echo, 3000, "AT+IPSEND=%d,%d\r\n",id,len);
+	#else
+	tos_at_cmd_exec_until(&echo, 3000, "AT+IPSEND=%d\r\n",len);
+	#endif
+	if (echo.status == AT_ECHO_STATUS_EXPECT) 
+	{
+		printf(buf);
+		tos_at_echo_create(&echo, NULL, 0, "SEND OK");
+		tos_at_raw_data_send_until(&echo, 10000, buf,len);
+		if (echo.status == AT_ECHO_STATUS_EXPECT)
+		{
+			tos_at_global_lock_post();
+			return len;
+		}
+	}
+	tos_at_global_lock_post();
+	return -1;
+}
+
+
+static int m5313_close(int id)
+{
+#if defined(M5313_USE_MUX)
+
+    tos_at_cmd_exec(NULL, 1000, "AT+IPCLOSE=%d\r\n",id);
+
+    tos_at_channel_free(id);
+
+	printf("close %d called\n", id);
+#else
+	tos_at_cmd_exec(NULL, 1000, "AT+IPCLOSE\r\n");
+
+    tos_at_channel_free(0);
+
+	printf("close %d called\n", 0);
+#endif
+
+    return 0;
+}
+
+//多路链接
+static int m5313_set_cmmux(void)
+{
+    tos_at_cmd_exec(NULL, 1000, "AT+CMMUX=1\r\n");
+
+    return 0;
+}
+
+//单路链接
+static int m5313_reset_cmmux(void)
+{
+    tos_at_cmd_exec(NULL, 1000, "AT+CMMUX=0\r\n");
+
+    return 0;
+}
+
+static int m5313_parse_domain(const char *host_name, char *host_ip, size_t host_ip_len) {
+    char *str;
+    at_echo_t echo;
+    char echo_buffer[100];
+
+    tos_at_echo_create(&echo, echo_buffer, sizeof(echo_buffer), "+CMDNSGIP:");
+    tos_at_cmd_exec_until(&echo, 10000, "AT+CMDNSGIP=\"%s\"\r\n", host_name);
+    if (echo.status != AT_ECHO_STATUS_EXPECT) {
+        return -1;
+    }
+//	printf(echo.buffer);
+    /* +CMDNSGIP:"name","1.2.3.4"\r\n */
+    str = strstr((const char *)echo.buffer, "+CMDNSGIP:");
+    if (!str) {
+        return -1;
+    }
+    sscanf(str, "+CMDNSGIP:\"%*[^\"]\",\"%[^\"]",host_ip);
+    host_ip[host_ip_len - 1] = '\0';
+
+    int iplen = strlen(host_ip);
+    if (iplen > 1 && host_ip[iplen-1] == '"') {
+        host_ip[iplen-1] = 0;
+    }
+
+    printf("GOT IP: %s\n", host_ip);
+    return 0;
+}
+
+static int m5313_reset(void)
+{
+    at_echo_t echo;
+
+	HAL_GPIO_WritePin(NB_RST_GPIO_Port, NB_RST_Pin, GPIO_PIN_RESET);
+	tos_task_delay(200);
+	HAL_GPIO_WritePin(NB_RST_GPIO_Port, NB_RST_Pin, GPIO_PIN_SET);
+	tos_task_delay(200);
+
+    tos_at_echo_create(&echo, NULL, 0, "+CTZV:");
+    tos_at_cmd_exec_until(&echo, 60000, "AT+TRB\r\n");
+	if (echo.status != AT_ECHO_STATUS_EXPECT) {
+        return -1;
+    }
+
+    return 0;
+}
+
+static int m5313_echo_close(void)
+{
+    at_echo_t echo;
+
+    tos_at_echo_create(&echo, NULL, 0, NULL);
+    tos_at_cmd_exec(&echo, 1000, "ATE0\r\n");
+    if (echo.status == AT_ECHO_STATUS_OK) {
+        return 0;
+    }
+
+    return -1;
+}
+
+static int m5313_pin_ready(void)
+{
+    at_echo_t echo;
+
+    tos_at_echo_create(&echo, NULL, 0, "+CPIN:READY");
+    tos_at_cmd_exec_until(&echo, 5000, "AT+CPIN?\r\n");
+    if (echo.status == AT_ECHO_STATUS_EXPECT) {
+        return 0;
+    }
+
+    return -1;
+}
+
+
+static int m5313_signal_quality_check(void)
+{
+    int rssi, ber;
+    at_echo_t echo;
+    char echo_buffer[32], *str;
+
+    tos_at_echo_create(&echo, echo_buffer, sizeof(echo_buffer), "+CSQ:");
+    tos_at_cmd_exec_until(&echo, 5000, "AT+CSQ\r\n");
+    if (echo.status != AT_ECHO_STATUS_EXPECT) {
+        return -1;
+    }
+	printf(echo.buffer);
+    str = strstr(echo.buffer, "+CSQ:");
+    sscanf(str, "+CSQ:%d,%d", &rssi, &ber);
+    if (rssi == 99) {
+        return -1;
+    }
+
+    return 0;
+}
+
+
+//Network switching mode ---Automatic mode
+static int m5313_Net_switch_mode(void)
+{
+	at_echo_t echo;
+	tos_at_echo_create(&echo, NULL, 0, "+CFGDUALMODE: 1,0\r\n");
+	tos_at_cmd_exec_until(&echo, 5000,  "AT+CFGDUALMODE?\r\n");				
+	if (echo.status == AT_ECHO_STATUS_EXPECT){	
+		return 0;		
+	}else{
+		tos_at_echo_create(&echo, NULL, 0, NULL);
+		tos_at_cmd_exec(&echo, 2000,  "AT+CFGDUALMODE=1,0\r\n");				
+		if(echo.status == AT_ECHO_STATUS_OK)
+		{	
+			if (m5313_reset() != 0) {
+		        return -1;
+		    }
+			return 0;
+		}		
+	}
+	return -1;
+}
+//
+static int m5313_Check_net_type(void)
+{
+    at_echo_t echo;
+
+    tos_at_echo_create(&echo, NULL, 0, "+COPS: 0,2,\"46000\", 0");
+    tos_at_cmd_exec_until(&echo, 8000,  "AT+COPS?\r\n");				
+	if (echo.status != AT_ECHO_STATUS_EXPECT)
+	{	
+		tos_at_echo_create(&echo, NULL, 0, "+CTZV:");
+		tos_at_cmd_exec_until(&echo, 25000,  "AT+CFGRATPRIO=2\r\n");				
+		if (echo.status == AT_ECHO_STATUS_EXPECT)
+		{					
+			return 0;										
+		}		
+	}else{
+		return 0;
+	}
+    return -1;
+}
+//
+static int m5313_Check_sim_numb(void)
+{
+	at_echo_t echo;
+	tos_at_echo_create(&echo, NULL, 0, NULL);
+	tos_at_cmd_exec_until(&echo, 2000,  "AT+CIMI\r\n");				
+	if (echo.status == AT_ECHO_STATUS_OK)
+	{					
+		return 0;													
+	}	
+	return -1;
+}
+
+static int m5313_cm_head(void)
+{
+	at_echo_t echo;
+	tos_at_echo_create(&echo, NULL, 0, NULL);
+	tos_at_cmd_exec(&echo, 1000,  "AT+CMHEAD=1\r\n");				
+	if (echo.status == AT_ECHO_STATUS_OK)
+	{					
+		return 0;
+	}
+	return -1;
+}
+
+static int m5313_cm_showpt(void)
+{
+	at_echo_t echo;
+	tos_at_echo_create(&echo, NULL, 0, NULL);
+	tos_at_cmd_exec(&echo, 1000,  "AT+CMSHOWPT=1\r\n");				
+	if (echo.status == AT_ECHO_STATUS_OK)
+	{					
+		return 0;												
+	}	
+	return -1;
+}
+
+static int m5313_cm_showra0(void)
+{
+	at_echo_t echo;
+	tos_at_echo_create(&echo, NULL, 0, NULL);
+	tos_at_cmd_exec(&echo, 1000,  "AT+CMSHOWRA=0\r\n");				
+	if (echo.status == AT_ECHO_STATUS_OK)
+	{					
+		return 0;												
+	}	
+	return -1;
+}
+
+
+static int m5313_activate(void) {
+    int try = 0;
+    at_echo_t echo;
+
+    tos_at_echo_create(&echo, NULL, 0, NULL);
+    while (try++ < 5) {
+        tos_at_cmd_exec(&echo, 3000, "AT+CGACT=1,1\r\n");
+        if (echo.status == AT_ECHO_STATUS_OK || echo.status == AT_ECHO_STATUS_EXPECT) {
+            return 0;
+        }
+    }
+
+    return -1;
+}
+
+
+//
+static int m5313_Activate_pdp(void)
+{
+	at_echo_t echo;
+
+	tos_at_echo_create(&echo, NULL, 0, "+CGACT: 1, 1\r\n");
+	tos_at_cmd_exec_until(&echo, 2000,  "AT+CGACT?\r\n");				
+	if (echo.status == AT_ECHO_STATUS_EXPECT)
+	{			
+		return 0;												
+	}
+	else
+	{
+		tos_at_echo_create(&echo, NULL, 0, NULL);
+		tos_at_cmd_exec_until(&echo, 20000,  "AT+CGACT=1,1\r\n");				
+		if (echo.status == AT_ECHO_STATUS_OK)
+		{			
+			return 0;												
+		}
+		
+	}
+	return -1;
+}
+
+static int m5313_init(void)
+{
+    printf("Init M5313 ...\n" );
+
+ 	if (m5313_reset() != 0) {
+        printf("m5313 reset FAILED\n");
+        return -1;
+    }
+
+    if (m5313_echo_close() != 0) {
+        printf("m5313 echo close FAILED\n");
+        return -1;
+    }
+
+	if (m5313_pin_ready() != 0) {
+        printf("m5313 pin not ready\n");
+        return -1;
+    }
+
+	if (m5313_Net_switch_mode() != 0) {
+        printf("nb Netswitch mode err!\n");
+//        return -1;
+	}
+	
+	if (m5313_Check_net_type() != 0) {
+        printf("nb net type err!\n");
+	}
+	
+	if (m5313_signal_quality_check() != 0) {
+        printf("nb signal err!\n");
+	}
+	
+	if (m5313_activate() != 0) {
+        printf("nb pdp err!\n");
+	}
+
+	
+	if (m5313_cm_head() != 0) {
+        printf("cm head err!\n");
+	}
+
+
+	if (m5313_cm_showpt() != 0) {
+        printf("cm showpt err!\n");
+	}
+	
+#if defined(M5313_USE_MUX)
+	if (m5313_set_cmmux() != 0) {
+        printf("cm showpt err!\n");
+	}
+#endif
+	return 0;
+}
+
+#define M5313_INCOMING_DATA_LEN 2048
+__STATIC__ uint8_t incoming_data_buffer[M5313_INCOMING_DATA_LEN];
+
+__STATIC__ void m5313_server_ip_port(void)
+{
+	
+}
+#if defined(M5313_USE_MUX)
+__STATIC__ void m5313_incoming_data(void)
+{
+	uint8_t data=0;
+	int id = 0;
+	int data_len = 0;
+	int discard_suffix = 1;
+	if (tos_at_uart_read(&data, 1) != 1) {
+            return;
+    }
+	if(data >= '0' && data <= '9') {
+		id = data - '0';
+    }
+
+	if (tos_at_uart_read(&data, 1) != 1) {
+        return;
+    }
+
+	while (1) {
+        if (tos_at_uart_read(&data, 1) != 1) {
+            return;
+        }
+
+        if(data >= '0' && data <= '9') {
+            data_len = data_len * 10 + (data - '0');
+		}else if(data == ':'){
+			break;
+		}else{
+			return;
+		}
+    }
+
+	if (data_len > sizeof(incoming_data_buffer)) {
+        discard_suffix = 0;
+        data_len = sizeof(incoming_data_buffer);
+    }
+
+    if (tos_at_uart_read(incoming_data_buffer, data_len) != data_len) {
+        return;
+    }
+
+    tos_at_channel_write(id, incoming_data_buffer, data_len);
+
+//	printf(incoming_data_buffer);
+	
+}
+
+#else
+__STATIC__ void m5313_incoming_data(void)
+{
+	uint8_t data=0;
+	int data_len = 0;
+	int discard_suffix = 1;
+
+	while (data != ':') {
+        if (tos_at_uart_read(&data, 1) != 1) {
+            return;
+        }
+
+        if(data >= '0' && data <= '9') {
+            data_len = data_len * 10 + (data - '0');
+        }
+    }
+
+	if (data_len > sizeof(incoming_data_buffer)) {
+        discard_suffix = 0;
+        data_len = sizeof(incoming_data_buffer);
+    }
+
+    if (tos_at_uart_read(incoming_data_buffer, data_len) != data_len) {
+        return;
+    }
+
+    tos_at_channel_write(0, incoming_data_buffer, data_len);
+
+//	printf(incoming_data_buffer);
+
+}
+#endif
+
+at_event_t m5313_at_event[] = {
+    {"+RECV FROM:",    m5313_server_ip_port},
+#if defined(M5313_USE_MUX)
+	{"+RECEIVE,",    m5313_incoming_data },
+#else
+	{"+IPD,",    m5313_incoming_data },
+#endif
+
+};
+
+sal_module_t sal_module_m5313 = {
+    .init           = m5313_init,
+    .connect        = m5313_connect,
+    .send           = m5313_send,
+    .recv_timeout   = m5313_recv_timeout,
+    .recv           = m5313_recv,
+    .close          = m5313_close,
+    .parse_domain   = m5313_parse_domain,
+};
+
+int m5313_sal_init(hal_uart_port_t uart_port)
+{
+    if (tos_at_init(uart_port, m5313_at_event,
+                        sizeof(m5313_at_event) / sizeof(m5313_at_event[0])) != 0) {
+        return -1;
+    }
+
+    if (tos_sal_module_register(&sal_module_m5313) != 0) {
+        return -1;
+    }
+
+    if (tos_sal_module_init() != 0) {
+        return -1;
+    }
+
+    return 0;
+}
+
diff --git a/devices/m5313/m5313.h b/devices/m5313/m5313.h
new file mode 100644
index 00000000..9498fb53
--- /dev/null
+++ b/devices/m5313/m5313.h
@@ -0,0 +1,26 @@
+/*----------------------------------------------------------------------------
+ * 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 __M5313_H__
+#define __M5313_H__
+
+#include "tos_at.h"
+
+int m5313_sal_init(hal_uart_port_t uart_port);
+
+#endif /* __M5310A_H__ */
+