simple http request (temperature data) from mbed lpc1768 with application board to thingsboard device/dashboard
Fork of http-example by
Diff: source/main.cpp
- Revision:
- 30:6b0698841e48
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/source/main.cpp Fri Jun 29 03:19:37 2018 +0000 @@ -0,0 +1,104 @@ +#include "select-demo.h" + +#if DEMO == MAIN + +#include "mbed.h" +#include "easy-connect.h" +#include "http_request.h" + +#include "LM75B.h" + +LM75B tmp(p28,p27); + + + +void dump_response(HttpResponse* res) { + printf("Status: %d - %s\n", res->get_status_code(), res->get_status_message().c_str()); + + printf("Headers:\n"); + for (size_t ix = 0; ix < res->get_headers_length(); ix++) { + printf("\t%s: %s\n", res->get_headers_fields()[ix]->c_str(), res->get_headers_values()[ix]->c_str()); + } + printf("\nBody (%d bytes):\n\n%s\n", res->get_body_length(), res->get_body_as_string().c_str()); +} + +int main() { + + // Connect to the network (see mbed_app.json for the connectivity method used) + NetworkInterface* network = easy_connect(true); + if (!network) { + printf("Cannot connect to the network, see serial output"); + return 1; + } + + // Create a TCP socket + printf("\n----- Setting up TCP connection -----\n"); + while(tmp.read()<=30){ + TCPSocket* socket = new TCPSocket(); + nsapi_error_t open_result = socket->open(network); + if (open_result != 0) { + printf("Opening TCPSocket failed... %d\n", open_result); + return 1; + } + + nsapi_error_t connect_result = socket->connect("demo.thingsboard.io", 80); + if (connect_result != 0) { + printf("Connecting over TCPSocket failed... %d\n", connect_result); + return 1; + } + + printf("Connected over TCP to demo.thingsboard.io:80\n"); + + /*/ Do a GET request to httpbin.org + { + HttpRequest* get_req = new HttpRequest(socket, HTTP_GET, "http://httpbin.org/status/418"); + + // By default the body is automatically parsed and stored in a string, this is memory heavy. + // To receive chunked response, pass in a callback as third parameter to 'send'. + HttpResponse* get_res = get_req->send(); + if (!get_res) { + printf("HttpRequest failed (error code %d)\n", get_req->get_error()); + return 1; + } + + printf("\n----- HTTP GET response -----\n"); + dump_response(get_res); + + delete get_req; + } + + *//// POST request to httpbin.org + + { + HttpRequest* post_req = new HttpRequest(socket, HTTP_POST, "http://demo.thingsboard.io/api/v1/aq8Xr1qkEzo1ANb4VQHa/telemetry"); + post_req->set_header("Content-Type", "application/json"); + + + char body[256]; + //body[0] = 0; + sprintf(body,"{\"temperature\":%2f, \"active\": false}",tmp.read()); + //printf(buffer); + //const char body[] = "{\"hello\":\"world\"}"; + + HttpResponse* post_res = post_req->send(body, strlen(body)); + + if (!post_res) { + printf("HttpRequest failed (error code %d)\n", post_req->get_error()); + return 1; + } + + + printf("\n----- HTTP POST response -----\n"); + + dump_response(post_res); + + delete post_req; + } + + delete socket; + + wait(5); + } +} + +#endif \ No newline at end of file