This is a full demo that connects to mbed Device Server. It is used with a I2C Grove Color sensor, so it should be compatible on all platforms that support Ethernet.

Dependencies:   ColorDetectorV2 EthernetInterface mbed-rtos mbed nsdl

Fork of nespresso_endpoint by Brian Daniels

mbed Software Configuration

The default mbed Device Server (NSP or mDS) configuration is used by an instance of the web app (Barista) here: http://barista-test.cloudapp.net:4005.

In main.cpp, find the following lines:

// ****************************************************************************
// Configuration section
 
// I2C Settings
#define COLOR_SENSOR_SCL I2C_SCL
#define COLOR_SENSOR_SDA I2C_SDA
 
// Ethernet configuration
/* Define this to enable DHCP, otherwise manual address configuration is used */
#define DHCP
 
/* Manual IP configurations, if DHCP not defined */
#define IP      "0.0.0.0"
#define MASK    "255.255.255.0"
#define GW      "0.0.0.0"
 
// NSP configuration
/* Change this IP address to that of your mbed Device Server installation if you're not using mbed Connector */
static const char* NSP_ADDRESS = "api.connector.mbed.org";
static const int NSP_PORT = 5683;
char endpoint_name[] = "nespresso-machine-ethernet";
uint8_t ep_type[] = {"nespresso-endpoint"};
char nsp_domain[] = "56645321f5e24c49908e42f4d71b9ccb";
uint8_t lifetime_ptr[] = {"1200"};
 
// ****************************************************************************

Edit COLOR_SENSOR_SCL and COLOR_SENSOR_SDA to the appropriate I2C pins on your mbed platform.

You should not edit the DHCP/static IP settings if you are not using a static IP address. If you are using a static IP address, provide the appropriate information and remove the following line:

#define DHCP

Change endpoint_name to uniquely identify your Nespresso endpoint.

If you are using mbed Connector, change the nsp_domain string to your domain.

If you are using your own installation of mDS, you should change NSP_ADDRESS to the url of your mDS installation, NSP_PORT if you're using a non default port on mDS for CoAP, and nsp_domain to a valid domain on your mDS instance ("domain" is the default mDS domain).

Committer:
bridadan
Date:
Thu Jul 16 18:32:49 2015 +0000
Revision:
15:73e84ac7fb2d
Parent:
13:867a5ab8d474
Updating ColorDetectorV2 (default to 3.3v)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bridadan 0:0782597771bc 1 // NSDL library support functions
bridadan 0:0782597771bc 2
bridadan 0:0782597771bc 3 #include "mbed.h"
bridadan 0:0782597771bc 4 #include "nsdl_support.h"
bridadan 0:0782597771bc 5 #include "mbed.h"
bridadan 0:0782597771bc 6 #include "rtos.h"
bridadan 0:0782597771bc 7 #include "EthernetInterface.h"
bridadan 0:0782597771bc 8
bridadan 0:0782597771bc 9 extern Serial pc;
bridadan 0:0782597771bc 10 extern EthernetInterface eth;
bridadan 0:0782597771bc 11 extern Endpoint nsp;
bridadan 0:0782597771bc 12 extern UDPSocket server;
bridadan 12:11577a49e50f 13 extern char endpoint_name[];
bridadan 9:202680169650 14 extern char nsp_domain[];
bridadan 0:0782597771bc 15 extern uint8_t ep_type[];
bridadan 0:0782597771bc 16 extern uint8_t lifetime_ptr[];
bridadan 0:0782597771bc 17
bridadan 0:0782597771bc 18 // Registration update variables
bridadan 0:0782597771bc 19 sn_nsdl_ep_parameters_s *endpoint_ptr = NULL;
bridadan 0:0782597771bc 20 Ticker registration_updater;
bridadan 0:0782597771bc 21 bool update_registration = false;
bridadan 0:0782597771bc 22
bridadan 0:0782597771bc 23 // NSDL loop variables
bridadan 0:0782597771bc 24 sn_nsdl_addr_s received_packet_address;
bridadan 0:0782597771bc 25 uint8_t received_address[4];
bridadan 0:0782597771bc 26 char buffer[1024];
bridadan 0:0782597771bc 27 Endpoint from;
bridadan 0:0782597771bc 28
bridadan 0:0782597771bc 29 /* The number of seconds between NSP registration messages */
bridadan 0:0782597771bc 30 #define RD_UPDATE_PERIOD 60
bridadan 0:0782597771bc 31
bridadan 0:0782597771bc 32 void *nsdl_alloc(uint16_t size)
bridadan 0:0782597771bc 33 {
bridadan 0:0782597771bc 34 return malloc(size);
bridadan 0:0782597771bc 35 }
bridadan 0:0782597771bc 36
bridadan 0:0782597771bc 37 void nsdl_free(void* ptr_to_free)
bridadan 0:0782597771bc 38 {
bridadan 0:0782597771bc 39 free(ptr_to_free);
bridadan 0:0782597771bc 40 }
bridadan 0:0782597771bc 41
bridadan 0:0782597771bc 42 /*
bridadan 0:0782597771bc 43 * Create a static resoure
bridadan 0:0782597771bc 44 * Only get is allowed
bridadan 0:0782597771bc 45 */
bridadan 0:0782597771bc 46 void nsdl_create_static_resource(sn_nsdl_resource_info_s *resource_structure, uint16_t pt_len, uint8_t *pt, uint16_t rpp_len, uint8_t *rpp_ptr, uint8_t *rsc, uint16_t rsc_len)
bridadan 0:0782597771bc 47 {
bridadan 0:0782597771bc 48 resource_structure->access = SN_GRS_GET_ALLOWED;
bridadan 0:0782597771bc 49 resource_structure->mode = SN_GRS_STATIC;
bridadan 0:0782597771bc 50 resource_structure->pathlen = pt_len;
bridadan 0:0782597771bc 51 resource_structure->path = pt;
bridadan 0:0782597771bc 52 resource_structure->resource_parameters_ptr->resource_type_len = rpp_len;
bridadan 0:0782597771bc 53 resource_structure->resource_parameters_ptr->resource_type_ptr = rpp_ptr;
bridadan 0:0782597771bc 54 resource_structure->resource = rsc;
bridadan 0:0782597771bc 55 resource_structure->resourcelen = rsc_len;
bridadan 0:0782597771bc 56 sn_nsdl_create_resource(resource_structure);
bridadan 0:0782597771bc 57 }
bridadan 0:0782597771bc 58
bridadan 0:0782597771bc 59 void nsdl_create_dynamic_resource(sn_nsdl_resource_info_s *resource_structure, uint16_t pt_len, uint8_t *pt, uint16_t rpp_len, uint8_t *rpp_ptr, uint8_t is_observable, sn_grs_dyn_res_callback_t callback_ptr, int access_right)
bridadan 0:0782597771bc 60 {
bridadan 0:0782597771bc 61 resource_structure->access = (sn_grs_resource_acl_e)access_right;
bridadan 0:0782597771bc 62 resource_structure->resource = 0;
bridadan 0:0782597771bc 63 resource_structure->resourcelen = 0;
bridadan 0:0782597771bc 64 resource_structure->sn_grs_dyn_res_callback = callback_ptr;
bridadan 0:0782597771bc 65 resource_structure->mode = SN_GRS_DYNAMIC;
bridadan 0:0782597771bc 66 resource_structure->pathlen = pt_len;
bridadan 0:0782597771bc 67 resource_structure->path = pt;
bridadan 0:0782597771bc 68 resource_structure->resource_parameters_ptr->resource_type_len = rpp_len;
bridadan 0:0782597771bc 69 resource_structure->resource_parameters_ptr->resource_type_ptr = rpp_ptr;
bridadan 0:0782597771bc 70 resource_structure->resource_parameters_ptr->observable = is_observable;
bridadan 0:0782597771bc 71 sn_nsdl_create_resource(resource_structure);
bridadan 0:0782597771bc 72 }
bridadan 0:0782597771bc 73
bridadan 0:0782597771bc 74 sn_nsdl_ep_parameters_s* nsdl_init_register_endpoint(sn_nsdl_ep_parameters_s *endpoint_structure, uint8_t* name, uint8_t* typename_ptr, uint8_t *lifetime_ptr)
bridadan 0:0782597771bc 75 {
bridadan 9:202680169650 76 printf("NSP_DOMAIN: %s\r\n", nsp_domain);
bridadan 0:0782597771bc 77 if (NULL == endpoint_structure)
bridadan 0:0782597771bc 78 {
bridadan 0:0782597771bc 79 endpoint_structure = (sn_nsdl_ep_parameters_s*)nsdl_alloc(sizeof(sn_nsdl_ep_parameters_s));
bridadan 0:0782597771bc 80 }
bridadan 0:0782597771bc 81 if (endpoint_structure)
bridadan 6:9e3f6270fcb0 82 {
bridadan 0:0782597771bc 83 memset(endpoint_structure, 0, sizeof(sn_nsdl_ep_parameters_s));
bridadan 0:0782597771bc 84 endpoint_structure->endpoint_name_ptr = name;
bridadan 0:0782597771bc 85 endpoint_structure->endpoint_name_len = strlen((char*)name);
bridadan 9:202680169650 86 endpoint_structure->domain_name_ptr = (uint8_t*)nsp_domain;
bridadan 9:202680169650 87 endpoint_structure->domain_name_len = strlen((char*)nsp_domain);
bridadan 0:0782597771bc 88 endpoint_structure->type_ptr = typename_ptr;
bridadan 0:0782597771bc 89 endpoint_structure->type_len = strlen((char*)typename_ptr);
bridadan 0:0782597771bc 90 endpoint_structure->lifetime_ptr = lifetime_ptr;
bridadan 0:0782597771bc 91 endpoint_structure->lifetime_len = strlen((char*)lifetime_ptr);
bridadan 0:0782597771bc 92 }
bridadan 0:0782597771bc 93 return endpoint_structure;
bridadan 0:0782597771bc 94 }
bridadan 0:0782597771bc 95
bridadan 0:0782597771bc 96 void nsdl_clean_register_endpoint(sn_nsdl_ep_parameters_s **endpoint_structure)
bridadan 0:0782597771bc 97 {
bridadan 0:0782597771bc 98 if (*endpoint_structure)
bridadan 0:0782597771bc 99 {
bridadan 0:0782597771bc 100 nsdl_free(*endpoint_structure);
bridadan 0:0782597771bc 101 *endpoint_structure = NULL;
bridadan 0:0782597771bc 102 }
bridadan 0:0782597771bc 103 }
bridadan 0:0782597771bc 104
bridadan 0:0782597771bc 105 static uint8_t tx_cb(sn_nsdl_capab_e protocol, uint8_t *data_ptr, uint16_t data_len, sn_nsdl_addr_s *address_ptr)
bridadan 0:0782597771bc 106 {
bridadan 0:0782597771bc 107 pc.printf("TX callback!\n\rSending %d bytes\r\n", data_len);
bridadan 0:0782597771bc 108
bridadan 0:0782597771bc 109 if(server.sendTo(nsp, (char*)data_ptr, data_len) != data_len)
bridadan 0:0782597771bc 110 pc.printf("sending failed\n\r");
bridadan 0:0782597771bc 111
bridadan 0:0782597771bc 112 return 1;
bridadan 0:0782597771bc 113 }
bridadan 0:0782597771bc 114
bridadan 0:0782597771bc 115 static uint8_t rx_cb(sn_coap_hdr_s *coap_packet_ptr, sn_nsdl_addr_s *address_ptr)
bridadan 0:0782597771bc 116 {
bridadan 0:0782597771bc 117 pc.printf("RX callback!\r\n");
bridadan 0:0782597771bc 118 return 0;
bridadan 0:0782597771bc 119 }
bridadan 0:0782597771bc 120
bridadan 0:0782597771bc 121 void registration_ticker_func() {
bridadan 0:0782597771bc 122 update_registration = true;
bridadan 0:0782597771bc 123 }
bridadan 0:0782597771bc 124
bridadan 6:9e3f6270fcb0 125 bool register_endpoint(bool init) {
bridadan 6:9e3f6270fcb0 126 bool endpoint_registered;
bridadan 6:9e3f6270fcb0 127 sn_nsdl_ep_parameters_s *endpoint_ptr = NULL;
bridadan 6:9e3f6270fcb0 128 if (init) {
bridadan 6:9e3f6270fcb0 129 endpoint_ptr = nsdl_init_register_endpoint(endpoint_ptr, (uint8_t*)endpoint_name, ep_type, lifetime_ptr);
bridadan 6:9e3f6270fcb0 130 if(sn_nsdl_register_endpoint(endpoint_ptr) != 0) {
bridadan 6:9e3f6270fcb0 131 pc.printf("NSP initial registration failed\r\n");
bridadan 6:9e3f6270fcb0 132 endpoint_registered = false;
bridadan 6:9e3f6270fcb0 133 }
bridadan 6:9e3f6270fcb0 134 else {
bridadan 6:9e3f6270fcb0 135 pc.printf("NSP initial registration OK\r\n");
bridadan 6:9e3f6270fcb0 136 endpoint_registered = true;
bridadan 6:9e3f6270fcb0 137 }
bridadan 6:9e3f6270fcb0 138 }
bridadan 6:9e3f6270fcb0 139 else {
bridadan 6:9e3f6270fcb0 140 endpoint_ptr = nsdl_init_register_endpoint(endpoint_ptr, NULL, NULL, NULL);
bridadan 6:9e3f6270fcb0 141 if(sn_nsdl_update_registration(endpoint_ptr) != 0) {
bridadan 6:9e3f6270fcb0 142 pc.printf("NSP re-registration failed\r\n");
bridadan 6:9e3f6270fcb0 143 endpoint_registered = false;
bridadan 6:9e3f6270fcb0 144 }
bridadan 6:9e3f6270fcb0 145 else {
bridadan 6:9e3f6270fcb0 146 pc.printf("NSP re-registration OK\r\n");
bridadan 6:9e3f6270fcb0 147 endpoint_registered = true;
bridadan 6:9e3f6270fcb0 148 }
bridadan 6:9e3f6270fcb0 149 }
bridadan 0:0782597771bc 150 nsdl_clean_register_endpoint(&endpoint_ptr);
bridadan 6:9e3f6270fcb0 151
bridadan 6:9e3f6270fcb0 152 return endpoint_registered;
bridadan 0:0782597771bc 153 }
bridadan 0:0782597771bc 154 void nsdl_init()
bridadan 0:0782597771bc 155 {
bridadan 0:0782597771bc 156 uint8_t nsp_addr[4];
bridadan 0:0782597771bc 157 sn_nsdl_mem_s memory_cbs;
bridadan 0:0782597771bc 158
bridadan 0:0782597771bc 159 /* Initialize libNsdl */
bridadan 0:0782597771bc 160 memory_cbs.sn_nsdl_alloc = &nsdl_alloc;
bridadan 0:0782597771bc 161 memory_cbs.sn_nsdl_free = &nsdl_free;
bridadan 0:0782597771bc 162 if(sn_nsdl_init(&tx_cb, &rx_cb, &memory_cbs) == -1)
bridadan 0:0782597771bc 163 pc.printf("libNsdl init failed\r\n");
bridadan 0:0782597771bc 164 else
bridadan 0:0782597771bc 165 pc.printf("libNsdl init done\r\n");
bridadan 0:0782597771bc 166
bridadan 0:0782597771bc 167 /* Set nsp address for library */
bridadan 0:0782597771bc 168 set_NSP_address(nsp_addr, 5683, SN_NSDL_ADDRESS_TYPE_IPV4);
bridadan 0:0782597771bc 169 }
bridadan 0:0782597771bc 170
bridadan 0:0782597771bc 171 void nsdl_event_loop_init() {
bridadan 13:867a5ab8d474 172 server.set_blocking(false, 0);
bridadan 0:0782597771bc 173 memset(&received_packet_address, 0, sizeof(sn_nsdl_addr_s));
bridadan 0:0782597771bc 174 received_packet_address.addr_ptr = received_address;
bridadan 0:0782597771bc 175
bridadan 0:0782597771bc 176 registration_updater.attach(&registration_ticker_func, RD_UPDATE_PERIOD);
bridadan 0:0782597771bc 177 }
bridadan 0:0782597771bc 178
bridadan 0:0782597771bc 179 void nsdl_event_loop_run_once()
bridadan 0:0782597771bc 180 {
bridadan 0:0782597771bc 181 if (update_registration) {
bridadan 0:0782597771bc 182 update_registration = false;
bridadan 6:9e3f6270fcb0 183 if (!register_endpoint(false)) {
bridadan 6:9e3f6270fcb0 184 register_endpoint(true);
bridadan 6:9e3f6270fcb0 185 }
bridadan 0:0782597771bc 186 }
bridadan 0:0782597771bc 187
bridadan 0:0782597771bc 188 int n = server.receiveFrom(from, buffer, sizeof(buffer));
bridadan 0:0782597771bc 189
bridadan 0:0782597771bc 190 if (n < 0)
bridadan 0:0782597771bc 191 {
bridadan 0:0782597771bc 192 pc.printf("Socket error\n\r");
bridadan 0:0782597771bc 193 }
bridadan 0:0782597771bc 194 else
bridadan 0:0782597771bc 195 {
bridadan 0:0782597771bc 196 sn_nsdl_process_coap((uint8_t*)buffer, n, &received_packet_address);
bridadan 0:0782597771bc 197 }
bridadan 12:11577a49e50f 198 }