add Tencent Cloud explorer lora demo

develop guide, see http://iwiki.oa.com/pages/viewpage.action?pageId=46342556

examples/LoRaWAN/lora_demo.c

@@ -1,30 +1,116 @@
 #include "lora_demo.h"
+#include "HTS221.h"
+#include "RHF76.h"
 
-void lorawan_demo(void)
+/*
+ ==================================================================================
+ data template:
+
+ Type       Name            Token       DataType    RW          Attribute
+ property   temperature     temperature integer     readonly    range: [-100, 155]
+                                                                initial: 0
+                                                                step: 1
+                                                                unit: centigrade
+
+ property   humidity        humidity    integer     readonly    range: [-0, 100]
+                                                                initial: 0
+                                                                step: 1
+                                                                unit: %
+
+ property   report_period   period      integer     read-write  range: [0, 3600]
+                                                                initial: 0
+                                                                step: 1
+                                                                unit: second
+
+ ==================================================================================
+ up-link parser javascript:
+
+ function RawToProtocol(fPort, bytes) {
+  var data = {
+      "method": "report",
+      "clientToken" : new Date(),
+      "params" : {}
+  };
+  data.params.temperature = bytes[0];
+  data.params.humidity = bytes[1];
+  data.params.period = bytes[2] | (bytes[3] << 8);
+  return data;
+ }
+
+ ==================================================================================
+ down-link parser javascript:
+
+ function ProtocolToRaw(obj) {
+     var data = new Array();
+     data[0] = 5;// fport=5
+     data[1] = 0;// unconfirmed mode
+     data[2] = obj.params.period & 0x00FF;
+     data[3] = (obj.params.period >> 8) & 0x00FF;
+     return data;
+ }
+
+ */
+
+uint16_t report_period = 3000;
+
+typedef struct device_data_st {
+    uint8_t     temperature;
+    uint8_t     humidity;
+    uint16_t    period;
+} __PACKED__ dev_data_t;
+
+typedef struct device_data_wrapper_st {
+    union {
+        dev_data_t  dev_data;
+        uint8_t     serialize[sizeof(dev_data_t)];
+    } u;
+} dev_data_wrapper_t;
+
+dev_data_wrapper_t dev_data_wrapper;
+
+void recv_callback(uint8_t *data, uint8_t len)
 {
-    int count = 1;
-    extern int rhf76_lora_init(hal_uart_port_t uart_port);
+    int i = 0;
 
-    rhf76_lora_init(HAL_UART_PORT_1);
-    tos_lora_module_join();
+    printf("len: %d\n", len);
 
-    while (1) {
-        if (count % 20 == 0) {
-            
-            printf("############task1 count is %d \r\n",count++);
-            tos_lora_module_send("test data",sizeof("test data"));
-        }
-        count++;
-        osDelay(500);
+    for (i = 0; i < len; ++i) {
+        printf("data[%d]: %d\n", i, data[i]);
     }
-}
 
+    if (len == 1) {
+        report_period = data[0];
+    } else if (len >= 2) {
+        report_period = data[0] | (data[1] << 8);
+    }
+    printf("report_period: %d\n", report_period);
+}
 
 void application_entry(void *arg)
 {
-    lorawan_demo();
+    int16_t temperature;
+    int16_t humidity;
+
+    HTS221_Init();
+
+    rhf76_lora_init(HAL_UART_PORT_1);
+    tos_lora_module_recvcb_register(recv_callback);
+
+    tos_lora_module_join_otaa("8cf957200000fa57", "8cf957200000fa572059aaaaad204a72");
+
     while (1) {
-        printf("This is a lorawan demo!\r\n");
-        tos_task_delay(1000);
+        HTS221_Get_Temperature(&temperature);
+        HTS221_Get_Humidity(&humidity);
+
+        printf("temperature: %2.1f\n", temperature / 10.0);
+        printf("humidity   : %2.1f\n", humidity / 10.0);
+
+        dev_data_wrapper.u.dev_data.temperature = temperature / 10;
+        dev_data_wrapper.u.dev_data.humidity    = humidity / 10;
+        dev_data_wrapper.u.dev_data.period      = report_period;
+
+        tos_lora_module_send(dev_data_wrapper.u.serialize, sizeof(dev_data_t));
+        tos_task_delay(report_period);
     }
 }
+