![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5iZhJGO3ITZzIWNhFjMzETOjlzNwQzYwETOmRzYxUjNk9CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
在startup中设置Stack_Size合适的值,Heap_size同理;
#define FREE(p) myfree((void **)&p)
void myfree(void ** point)
{
if(*point != NULL)
{
free(*point);
*point = NULL;
}
}
char* out;
void create_json()
{
cJSON * root = cJSON_CreateObject();
cJSON * item = cJSON_CreateObject();
cJSON_AddItemToObject(item, "lng", cJSON_CreateNumber(120.000001));
cJSON_AddItemToObject(item, "NS", cJSON_CreateString("N"));
cJSON_AddItemToObject(item, "lat", cJSON_CreateNumber(31.111));
cJSON_AddItemToObject(item, "WE", cJSON_CreateString("E"));
cJSON_AddItemToObject(root, "g",item);
cJSON_AddItemToObject(root, "times", cJSON_CreateNumber(count));
cJSON_AddItemToObject(root, "tem", cJSON_CreateNumber(temp));
cJSON_AddItemToObject(root, "x", cJSON_CreateNumber(x));
cJSON_AddItemToObject(root, "y", cJSON_CreateNumber(y));
cJSON_AddItemToObject(root, "z", cJSON_CreateNumber(z));
cJSON_AddItemToObject(root, "rh", cJSON_CreateNumber(0.1));
cJSON_AddItemToObject(root, "time", cJSON_CreateNumber(timestamp));
out= cJSON_Print(root);cJSON_Delete(root);
printf("%s",out);
if(out)
{
FREE(out);
}
}