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
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).
nsdl_support.cpp
- Committer:
- bridadan
- Date:
- 2015-07-16
- Revision:
- 15:73e84ac7fb2d
- Parent:
- 13:867a5ab8d474
File content as of revision 15:73e84ac7fb2d:
// NSDL library support functions #include "mbed.h" #include "nsdl_support.h" #include "mbed.h" #include "rtos.h" #include "EthernetInterface.h" extern Serial pc; extern EthernetInterface eth; extern Endpoint nsp; extern UDPSocket server; extern char endpoint_name[]; extern char nsp_domain[]; extern uint8_t ep_type[]; extern uint8_t lifetime_ptr[]; // Registration update variables sn_nsdl_ep_parameters_s *endpoint_ptr = NULL; Ticker registration_updater; bool update_registration = false; // NSDL loop variables sn_nsdl_addr_s received_packet_address; uint8_t received_address[4]; char buffer[1024]; Endpoint from; /* The number of seconds between NSP registration messages */ #define RD_UPDATE_PERIOD 60 void *nsdl_alloc(uint16_t size) { return malloc(size); } void nsdl_free(void* ptr_to_free) { free(ptr_to_free); } /* * Create a static resoure * Only get is allowed */ 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) { resource_structure->access = SN_GRS_GET_ALLOWED; resource_structure->mode = SN_GRS_STATIC; resource_structure->pathlen = pt_len; resource_structure->path = pt; resource_structure->resource_parameters_ptr->resource_type_len = rpp_len; resource_structure->resource_parameters_ptr->resource_type_ptr = rpp_ptr; resource_structure->resource = rsc; resource_structure->resourcelen = rsc_len; sn_nsdl_create_resource(resource_structure); } 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) { resource_structure->access = (sn_grs_resource_acl_e)access_right; resource_structure->resource = 0; resource_structure->resourcelen = 0; resource_structure->sn_grs_dyn_res_callback = callback_ptr; resource_structure->mode = SN_GRS_DYNAMIC; resource_structure->pathlen = pt_len; resource_structure->path = pt; resource_structure->resource_parameters_ptr->resource_type_len = rpp_len; resource_structure->resource_parameters_ptr->resource_type_ptr = rpp_ptr; resource_structure->resource_parameters_ptr->observable = is_observable; sn_nsdl_create_resource(resource_structure); } 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) { printf("NSP_DOMAIN: %s\r\n", nsp_domain); if (NULL == endpoint_structure) { endpoint_structure = (sn_nsdl_ep_parameters_s*)nsdl_alloc(sizeof(sn_nsdl_ep_parameters_s)); } if (endpoint_structure) { memset(endpoint_structure, 0, sizeof(sn_nsdl_ep_parameters_s)); endpoint_structure->endpoint_name_ptr = name; endpoint_structure->endpoint_name_len = strlen((char*)name); endpoint_structure->domain_name_ptr = (uint8_t*)nsp_domain; endpoint_structure->domain_name_len = strlen((char*)nsp_domain); endpoint_structure->type_ptr = typename_ptr; endpoint_structure->type_len = strlen((char*)typename_ptr); endpoint_structure->lifetime_ptr = lifetime_ptr; endpoint_structure->lifetime_len = strlen((char*)lifetime_ptr); } return endpoint_structure; } void nsdl_clean_register_endpoint(sn_nsdl_ep_parameters_s **endpoint_structure) { if (*endpoint_structure) { nsdl_free(*endpoint_structure); *endpoint_structure = NULL; } } static uint8_t tx_cb(sn_nsdl_capab_e protocol, uint8_t *data_ptr, uint16_t data_len, sn_nsdl_addr_s *address_ptr) { pc.printf("TX callback!\n\rSending %d bytes\r\n", data_len); if(server.sendTo(nsp, (char*)data_ptr, data_len) != data_len) pc.printf("sending failed\n\r"); return 1; } static uint8_t rx_cb(sn_coap_hdr_s *coap_packet_ptr, sn_nsdl_addr_s *address_ptr) { pc.printf("RX callback!\r\n"); return 0; } void registration_ticker_func() { update_registration = true; } bool register_endpoint(bool init) { bool endpoint_registered; sn_nsdl_ep_parameters_s *endpoint_ptr = NULL; if (init) { endpoint_ptr = nsdl_init_register_endpoint(endpoint_ptr, (uint8_t*)endpoint_name, ep_type, lifetime_ptr); if(sn_nsdl_register_endpoint(endpoint_ptr) != 0) { pc.printf("NSP initial registration failed\r\n"); endpoint_registered = false; } else { pc.printf("NSP initial registration OK\r\n"); endpoint_registered = true; } } else { endpoint_ptr = nsdl_init_register_endpoint(endpoint_ptr, NULL, NULL, NULL); if(sn_nsdl_update_registration(endpoint_ptr) != 0) { pc.printf("NSP re-registration failed\r\n"); endpoint_registered = false; } else { pc.printf("NSP re-registration OK\r\n"); endpoint_registered = true; } } nsdl_clean_register_endpoint(&endpoint_ptr); return endpoint_registered; } void nsdl_init() { uint8_t nsp_addr[4]; sn_nsdl_mem_s memory_cbs; /* Initialize libNsdl */ memory_cbs.sn_nsdl_alloc = &nsdl_alloc; memory_cbs.sn_nsdl_free = &nsdl_free; if(sn_nsdl_init(&tx_cb, &rx_cb, &memory_cbs) == -1) pc.printf("libNsdl init failed\r\n"); else pc.printf("libNsdl init done\r\n"); /* Set nsp address for library */ set_NSP_address(nsp_addr, 5683, SN_NSDL_ADDRESS_TYPE_IPV4); } void nsdl_event_loop_init() { server.set_blocking(false, 0); memset(&received_packet_address, 0, sizeof(sn_nsdl_addr_s)); received_packet_address.addr_ptr = received_address; registration_updater.attach(®istration_ticker_func, RD_UPDATE_PERIOD); } void nsdl_event_loop_run_once() { if (update_registration) { update_registration = false; if (!register_endpoint(false)) { register_endpoint(true); } } int n = server.receiveFrom(from, buffer, sizeof(buffer)); if (n < 0) { pc.printf("Socket error\n\r"); } else { sn_nsdl_process_coap((uint8_t*)buffer, n, &received_packet_address); } }