ESP8266 / Mbed 2 deprecated ESP8266_HTTP_HelloWorld

HTTP Client with ESP8266 working example

Dependencies:   ESP8266Interface HTTPClient-SSL WebSocketClient mbed-rtos mbed

Fork of ESP8266_WebSockets_HelloWorld by ESP8266

This repository has been superceded

This project has moved to https://developer.mbed.org/teams/ESP8266/code/mbed-os-example-esp8266/

Introduction

This is a basic Hello World program for interfacing the ESP8266 chip with HTTP. It will execute a GET on httpbin.org/get, and a POST to httpbin.org/post.

ESP8266_HTTP_HelloWorld

  1. change ssid and passphrase to match your wifi connection
  2. Initialize ESP8266 with DHCP enabled
  3. Get mbed.org
    1. Print the information retrieved
  4. Post to httbin.org
    1. Print the information retrieved

You can view the information retrieved through a serial terminal set to 9600 baud.

Successful Execution

you should see something like the following on the terminal if the program successfully executes. /media/uploads/mbedAustin/httpclient.png

main.cpp@0:6a891da014a3, 2014-12-24 (annotated)

Committer:
michaeljkoster
Date:
Wed Dec 24 19:02:13 2014 +0000
Revision:
0:6a891da014a3
Child:
1:f61c1001ee60
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
michaeljkoster 0:6a891da014a3 1 #include "mbed.h"
michaeljkoster 0:6a891da014a3 2 #include "ESP8266Interface.h"
michaeljkoster 0:6a891da014a3 3 #include "nsdl_support.h"
michaeljkoster 0:6a891da014a3 4 #include "dbg.h"
michaeljkoster 0:6a891da014a3 5 #include "UDPSocket.h"
michaeljkoster 0:6a891da014a3 6 #include "Endpoint.h"
michaeljkoster 0:6a891da014a3 7
michaeljkoster 0:6a891da014a3 8 // Include resources
michaeljkoster 0:6a891da014a3 9 #include "light.h"
michaeljkoster 0:6a891da014a3 10
michaeljkoster 0:6a891da014a3 11 Serial pc(USBTX, USBRX); // tx, rx
michaeljkoster 0:6a891da014a3 12
michaeljkoster 0:6a891da014a3 13 // ****************************************************************************
michaeljkoster 0:6a891da014a3 14 // Configuration section
michaeljkoster 0:6a891da014a3 15
michaeljkoster 0:6a891da014a3 16
michaeljkoster 0:6a891da014a3 17 // Ethernet configuration
michaeljkoster 0:6a891da014a3 18 /* Define this to enable DHCP, otherwise manual address configuration is used */
michaeljkoster 0:6a891da014a3 19 #define DHCP
michaeljkoster 0:6a891da014a3 20
michaeljkoster 0:6a891da014a3 21 /* Manual IP configurations, if DHCP not defined */
michaeljkoster 0:6a891da014a3 22 #define IP "10.0.0.199"
michaeljkoster 0:6a891da014a3 23 #define MASK "255.255.255.0"
michaeljkoster 0:6a891da014a3 24 #define GW "10.0.0.1"
michaeljkoster 0:6a891da014a3 25
michaeljkoster 0:6a891da014a3 26
michaeljkoster 0:6a891da014a3 27 // NSP configuration
michaeljkoster 0:6a891da014a3 28 /* Change this IP address to that of your NanoService Platform installation */
michaeljkoster 0:6a891da014a3 29 //static const char* NSP_ADDRESS = "191.239.5.150"; // barista2.cloudapp.net
michaeljkoster 0:6a891da014a3 30 static const char* NSP_ADDRESS = "108.201.184.41"; // smartobjectservice.com
michaeljkoster 0:6a891da014a3 31 //static const char* NSP_ADDRESS = "192.168.1.200"; // local mDS server
michaeljkoster 0:6a891da014a3 32 static const int NSP_PORT = 5683;
michaeljkoster 0:6a891da014a3 33 char endpoint_name[24] = "mbedDEMO-";
michaeljkoster 0:6a891da014a3 34 uint8_t ep_type[] = {"DEMO"};
michaeljkoster 0:6a891da014a3 35 uint8_t lifetime_ptr[] = {"60"};
michaeljkoster 0:6a891da014a3 36
michaeljkoster 0:6a891da014a3 37 // ****************************************************************************
michaeljkoster 0:6a891da014a3 38 // Ethernet initialization
michaeljkoster 0:6a891da014a3 39
michaeljkoster 0:6a891da014a3 40
michaeljkoster 0:6a891da014a3 41 ESP8266Interface wifi(PA_15,PB_7,PA_14,"demo","ARMDEMO1");
michaeljkoster 0:6a891da014a3 42
michaeljkoster 0:6a891da014a3 43
michaeljkoster 0:6a891da014a3 44 static void ethernet_init()
michaeljkoster 0:6a891da014a3 45 {
michaeljkoster 0:6a891da014a3 46 pc.printf("init\r\n");
michaeljkoster 0:6a891da014a3 47 wifi.init(); // initialize the interface, reset the module
michaeljkoster 0:6a891da014a3 48
michaeljkoster 0:6a891da014a3 49 pc.printf("join\r\n");
michaeljkoster 0:6a891da014a3 50 wifi.join(); // join AP and get DHCP settings
michaeljkoster 0:6a891da014a3 51 }
michaeljkoster 0:6a891da014a3 52
michaeljkoster 0:6a891da014a3 53 // ****************************************************************************
michaeljkoster 0:6a891da014a3 54 // NSP initialization
michaeljkoster 0:6a891da014a3 55
michaeljkoster 0:6a891da014a3 56 UDPSocket server;
michaeljkoster 0:6a891da014a3 57 Endpoint nsp;
michaeljkoster 0:6a891da014a3 58 bool UDP_blocking = false;
michaeljkoster 0:6a891da014a3 59 unsigned int UDP_timeout = 100;
michaeljkoster 0:6a891da014a3 60
michaeljkoster 0:6a891da014a3 61 uint8_t macbytes[6] = {0};
michaeljkoster 0:6a891da014a3 62 char MAC[20] = "776655443322";
michaeljkoster 0:6a891da014a3 63
michaeljkoster 0:6a891da014a3 64 static void nsp_init()
michaeljkoster 0:6a891da014a3 65 {
michaeljkoster 0:6a891da014a3 66 //pc.printf("socket init\r\n");
michaeljkoster 0:6a891da014a3 67 server.init();
michaeljkoster 0:6a891da014a3 68 //pc.printf("socket bind\r\n");
michaeljkoster 0:6a891da014a3 69 server.bind(0);
michaeljkoster 0:6a891da014a3 70 pc.printf("set blocking option\r\n");
michaeljkoster 0:6a891da014a3 71 server.set_blocking(UDP_blocking, UDP_timeout);
michaeljkoster 0:6a891da014a3 72
michaeljkoster 0:6a891da014a3 73 pc.printf("set ep address\r\n");
michaeljkoster 0:6a891da014a3 74 nsp.set_address(NSP_ADDRESS, NSP_PORT);
michaeljkoster 0:6a891da014a3 75
michaeljkoster 0:6a891da014a3 76 strncat(endpoint_name, MAC, 12);
michaeljkoster 0:6a891da014a3 77
michaeljkoster 0:6a891da014a3 78 NSDL_DEBUG("name: %s", endpoint_name);
michaeljkoster 0:6a891da014a3 79 NSDL_DEBUG("NSP=%s - port %d\n", NSP_ADDRESS, NSP_PORT);
michaeljkoster 0:6a891da014a3 80
michaeljkoster 0:6a891da014a3 81 }
michaeljkoster 0:6a891da014a3 82
michaeljkoster 0:6a891da014a3 83 // ****************************************************************************
michaeljkoster 0:6a891da014a3 84 // Resource creation
michaeljkoster 0:6a891da014a3 85
michaeljkoster 0:6a891da014a3 86 static int create_resources()
michaeljkoster 0:6a891da014a3 87 {
michaeljkoster 0:6a891da014a3 88 sn_nsdl_resource_info_s *resource_ptr = NULL;
michaeljkoster 0:6a891da014a3 89 sn_nsdl_ep_parameters_s *endpoint_ptr = NULL;
michaeljkoster 0:6a891da014a3 90
michaeljkoster 0:6a891da014a3 91 NSDL_DEBUG("Creating resources");
michaeljkoster 0:6a891da014a3 92
michaeljkoster 0:6a891da014a3 93 /* Create resources */
michaeljkoster 0:6a891da014a3 94 resource_ptr = (sn_nsdl_resource_info_s*)nsdl_alloc(sizeof(sn_nsdl_resource_info_s));
michaeljkoster 0:6a891da014a3 95 if(!resource_ptr)
michaeljkoster 0:6a891da014a3 96 return 0;
michaeljkoster 0:6a891da014a3 97 memset(resource_ptr, 0, sizeof(sn_nsdl_resource_info_s));
michaeljkoster 0:6a891da014a3 98
michaeljkoster 0:6a891da014a3 99 resource_ptr->resource_parameters_ptr = (sn_nsdl_resource_parameters_s*)nsdl_alloc(sizeof(sn_nsdl_resource_parameters_s));
michaeljkoster 0:6a891da014a3 100 if(!resource_ptr->resource_parameters_ptr)
michaeljkoster 0:6a891da014a3 101 {
michaeljkoster 0:6a891da014a3 102 nsdl_free(resource_ptr);
michaeljkoster 0:6a891da014a3 103 return 0;
michaeljkoster 0:6a891da014a3 104 }
michaeljkoster 0:6a891da014a3 105 memset(resource_ptr->resource_parameters_ptr, 0, sizeof(sn_nsdl_resource_parameters_s));
michaeljkoster 0:6a891da014a3 106
michaeljkoster 0:6a891da014a3 107 // Static resources
michaeljkoster 0:6a891da014a3 108 nsdl_create_static_resource(resource_ptr, sizeof("3/0/0")-1, (uint8_t*) "3/0/0", 0, 0, (uint8_t*) "mbedDEMO", sizeof("mbedDEMO")-1);
michaeljkoster 0:6a891da014a3 109 nsdl_create_static_resource(resource_ptr, sizeof("3/0/1")-1, (uint8_t*) "3/0/1", 0, 0, (uint8_t*) "DEMO", sizeof("DEMO")-1);
michaeljkoster 0:6a891da014a3 110
michaeljkoster 0:6a891da014a3 111 // Dynamic resources
michaeljkoster 0:6a891da014a3 112 create_light_resource(resource_ptr);
michaeljkoster 0:6a891da014a3 113
michaeljkoster 0:6a891da014a3 114 /* Register with NSP */
michaeljkoster 0:6a891da014a3 115 endpoint_ptr = nsdl_init_register_endpoint(endpoint_ptr, (uint8_t*)endpoint_name, ep_type, lifetime_ptr);
michaeljkoster 0:6a891da014a3 116 if(sn_nsdl_register_endpoint(endpoint_ptr) != 0)
michaeljkoster 0:6a891da014a3 117 pc.printf("NSP registering failed\r\n");
michaeljkoster 0:6a891da014a3 118 else
michaeljkoster 0:6a891da014a3 119 pc.printf("NSP registering OK\r\n");
michaeljkoster 0:6a891da014a3 120 nsdl_clean_register_endpoint(&endpoint_ptr);
michaeljkoster 0:6a891da014a3 121
michaeljkoster 0:6a891da014a3 122 nsdl_free(resource_ptr->resource_parameters_ptr);
michaeljkoster 0:6a891da014a3 123 nsdl_free(resource_ptr);
michaeljkoster 0:6a891da014a3 124 return 1;
michaeljkoster 0:6a891da014a3 125 }
michaeljkoster 0:6a891da014a3 126
michaeljkoster 0:6a891da014a3 127 // ****************************************************************************
michaeljkoster 0:6a891da014a3 128 // Program entry point
michaeljkoster 0:6a891da014a3 129
michaeljkoster 0:6a891da014a3 130 int main()
michaeljkoster 0:6a891da014a3 131 {
michaeljkoster 0:6a891da014a3 132 pc.printf("SystemCoreClock=: %d\r\n", SystemCoreClock / 1000000) ;
michaeljkoster 0:6a891da014a3 133 NSDL_DEBUG("Hello mDS Demo Endpoint Application\n");
michaeljkoster 0:6a891da014a3 134
michaeljkoster 0:6a891da014a3 135 // Initialize Ethernet interface first
michaeljkoster 0:6a891da014a3 136 ethernet_init();
michaeljkoster 0:6a891da014a3 137
michaeljkoster 0:6a891da014a3 138 // Initialize NSP node
michaeljkoster 0:6a891da014a3 139 nsp_init();
michaeljkoster 0:6a891da014a3 140
michaeljkoster 0:6a891da014a3 141 // Initialize NSDL stack
michaeljkoster 0:6a891da014a3 142 nsdl_init();
michaeljkoster 0:6a891da014a3 143
michaeljkoster 0:6a891da014a3 144 // Create NSDL resources
michaeljkoster 0:6a891da014a3 145 create_resources();
michaeljkoster 0:6a891da014a3 146
michaeljkoster 0:6a891da014a3 147 // Run the NSDL event loop (never returns)
michaeljkoster 0:6a891da014a3 148 nsdl_event_loop();
michaeljkoster 0:6a891da014a3 149 }