Diff: networking.cpp

Revision:

2:a50b794b8ede

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/networking.cpp	Mon Jun 04 15:16:05 2018 +0000
@@ -0,0 +1,165 @@
+#include "mbed.h"
+#include "WIZnetInterface.h"
+#include "MQTTSocket.h"
+#include "MQTTClient.h"
+#include "networking.h"
+
+extern Serial pc;
+ //W5500接线 mosi,miso,sclk,cs,reset
+WIZnetInterface wiz(PB_5,PB_4,PB_3,PC_14,NC);
+//节点名称任取
+#define NODE_NAME "n_12345"
+ //接在同一子网下的设备MAC地址必须不同
+uint8_t mac_addr[6]={0x50,0x51,0x50,0x00,0x00,0x01};
+
+recv_ctl_cb g_recv_cb;
+const char* (*g_actuators)[2];
+static Timer g_timer;
+
+void disable_LSE() //调用此函数将 PC_14, PC_15 用作普通I/O
+{
+    RCC_OscInitTypeDef OscInitStruct;
+    HAL_RCC_GetOscConfig(&OscInitStruct);
+//    pc.printf("%u %u %u %u\r\n",OscInitStruct.HSEState,OscInitStruct.LSEState,OscInitStruct.HSIState,OscInitStruct.LSIState);
+    
+    // Enable access to Backup domain
+    HAL_PWR_EnableBkUpAccess();
+    // Reset Backup domain
+    __HAL_RCC_BACKUPRESET_FORCE();
+    __HAL_RCC_BACKUPRESET_RELEASE();
+    // Disable access to Backup domain
+    HAL_PWR_DisableBkUpAccess();
+    
+    OscInitStruct.LSEState=RCC_LSE_OFF;
+    HAL_RCC_OscConfig(&OscInitStruct);
+    
+    HAL_RCC_GetOscConfig(&OscInitStruct);
+//    pc.printf("%u %u %u %u\r\n",OscInitStruct.HSEState,OscInitStruct.LSEState,OscInitStruct.HSIState,OscInitStruct.LSIState);
+}
+
+
+void meta_report(MClient& client, const char* ns, const char* type, 
+                    const char* payload = NULL, size_t payload_len = 0, 
+                    bool retain = false, MQTT::QoS qos = MQTT::QOS1){
+    char topic[64];
+    sprintf(topic, "/%s/" NODE_NAME "/%s", ns, type);
+    int ret = client.publish(topic, (void*)payload, payload_len, qos, retain);
+    //pc.printf("client.publish()=%d\r\n",ret);
+}
+void messageArrived(MQTT::MessageData& md)
+{
+    MQTT::Message &message = md.message;
+//    pc.printf("messageArrived '%s' %d,%d\r\n", md.topicName.cstring, md.topicName.lenstring.len, message.payloadlen);
+
+//    char buf[64];
+//    int value, len = sizeof(buf)-1;
+//    if(message.payloadlen < len)
+//        len = message.payloadlen;
+//    memcpy(buf, message.payload, len);
+//    buf[len] = '\0';
+//    sscanf(buf, "%d", &value);
+//    pc.printf("received %d\r\n", value);
+
+    char* payload = new char[message.payloadlen+1];
+    if(!payload)
+        return;
+    memcpy(payload, message.payload, message.payloadlen);
+    payload[message.payloadlen]='\0';
+    
+    char* topic = new char[md.topicName.lenstring.len+1];
+    if(!topic){
+        delete[] payload;
+        return;
+    }
+    memcpy(topic, md.topicName.lenstring.data, md.topicName.lenstring.len);
+    topic[md.topicName.lenstring.len]='\0';
+    
+    char *pch = strtok (topic,"/");
+    for (int tok=0; tok<2 && pch != NULL; tok++)
+    {
+//        pc.printf ("%s\r\n",pch);
+        pch = strtok (NULL, "/");
+    }
+    if(pch)
+        g_recv_cb(pch, payload);
+    delete[] topic;
+    delete[] payload;
+}
+
+void publish_value(MClient &client, const char *topic, const char *buf)
+{
+    meta_report(client, "values",topic,buf,strlen(buf),true);
+}
+
+void buildCapability(char *out, const char* infoList[][2])
+{
+    out[0] = '\0';
+    for (int i = 0; infoList[i][0]; ++i)
+    {
+        strcat(out, infoList[i][0]);
+        strcat(out, ",");
+        strcat(out, infoList[i][1]);
+        strcat(out, "\\n");
+    }
+}
+ 
+int networking_init(MQTTSocket &sock, MClient &client, const char *broker,const char* sensors[][2], const char* actuators[][2], recv_ctl_cb cb) {
+    int ret;
+    g_timer.start();
+    disable_LSE(); //free LSE pins
+    wiz.init(mac_addr);
+    pc.printf("DHCP...\r\n");
+    wiz.connect();
+    pc.printf("IP: %s\r\n", wiz.getIPAddress());
+    
+    srand(rand()^g_timer.read_us());
+    
+    ret = sock.connect((char*)broker,1883);
+    if(ret != 0){
+        pc.printf("failed to connect to TCP server\r\n");
+        return 1;
+    }
+    pc.printf("sock.connect()=%d\r\n",ret);
+    
+    srand(rand()^g_timer.read_us());
+    
+    ret = client.connect();
+    if(ret != 0){
+        pc.printf("MQTT connect failed\r\n");
+        return 1;
+    }
+    pc.printf("client.connect()=%d\r\n",ret);
+    
+    
+    ret = client.subscribe("/control/" NODE_NAME "/+", MQTT::QOS1, messageArrived);    
+    pc.printf("sock.subscribe()=%d\r\n", ret);
+
+    g_recv_cb = cb;
+    g_actuators = actuators;
+
+    char * capabilities = new char[128];
+    if(!capabilities){
+        pc.printf("failed to alloc memory\r\n");
+        return 1;
+    }
+    //for (int i = 0; actuators[i][0]; ++i){
+//        sprintf(capabilities,"/control/" NODE_NAME "/+",actuators[i][0]);
+//        ret = client.subscribe(capabilities, MQTT::QOS1, messageArrived);    
+//        pc.printf("sock.subscribe(%s)=%d\r\n", capabilities, ret);
+//    }
+
+    //节点上线消息
+    meta_report(client, "events","online");
+    
+    //报告所有可接受的控制指令
+    buildCapability(capabilities, actuators);
+    meta_report(client, "capability","control", capabilities, strlen(capabilities), true);
+    //报告所有的传感器
+    buildCapability(capabilities, sensors);
+    meta_report(client, "capability","values", capabilities, strlen(capabilities), true);
+    delete[] capabilities;
+
+    pc.printf("Initialization done.\r\n");
+    
+    return 0;
+}