David Ross / Mbed 2 deprecated Ethernet_K64F_minimal

This is minimal code that will send a stream to data.sparkfun.com using the FRDM-K64 ethernet port

Dependencies:   EthernetInterface mbed-rtos mbed

Fork of Ethernet_K64F by Janhavi Kulkarni

main.cpp@1:8c684ad7d00e, 2016-10-30 (annotated)

Committer:
DavidElmoRoss
Date:
Sun Oct 30 16:00:06 2016 +0000
Revision:
1:8c684ad7d00e
Parent:
0:9eca947a9efa 
Minimal code to send data from the Ethernet Port of a FRDM-K64 as a stream to data.sparkfun.com

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DavidElmoRoss 1:8c684ad7d00e 1 /*
DavidElmoRoss 1:8c684ad7d00e 2 Title: Program to send DATA to Sparkfun Stream
DavidElmoRoss 1:8c684ad7d00e 3 Author: David Elmo Ross, 123-456-789, AED_701AA
DavidElmoRoss 1:8c684ad7d00e 4 Date: Oct 5th, 2016
DavidElmoRoss 1:8c684ad7d00e 5 Desription: This program simulates Celsius and Fahrenheit values. This can
DavidElmoRoss 1:8c684ad7d00e 6 be changed to get these values from a Temperature sensor.
DavidElmoRoss 1:8c684ad7d00e 7 This program will set up the necessary parameters to communicate
DavidElmoRoss 1:8c684ad7d00e 8 through the Ethernet Port on the FRDM-K64 that will then connect
DavidElmoRoss 1:8c684ad7d00e 9 to the SPARKFUN Server. The data provided by this program is formatted
DavidElmoRoss 1:8c684ad7d00e 10 to fit a STREAM on the Sparkfun Server that was set up before time with
DavidElmoRoss 1:8c684ad7d00e 11 Fahrenheit and Celsius.
DavidElmoRoss 1:8c684ad7d00e 12 When data is sent to the stream, it will include a PUBLIC and PRIVATE
DavidElmoRoss 1:8c684ad7d00e 13 key or it will be rejected. These keys are given to the user through
DavidElmoRoss 1:8c684ad7d00e 14 the site data.sparkfun.com
DavidElmoRoss 1:8c684ad7d00e 15 The key values you receive must replace the ones in this program.
DavidElmoRoss 1:8c684ad7d00e 16
DavidElmoRoss 1:8c684ad7d00e 17 */
DavidElmoRoss 1:8c684ad7d00e 18
janhavi 0:9eca947a9efa 19 #include "mbed.h"
janhavi 0:9eca947a9efa 20 #include "EthernetInterface.h"
janhavi 0:9eca947a9efa 21
DavidElmoRoss 1:8c684ad7d00e 22 char* Public_Key = "PublicKeyGoesHere"; // Public Key is used to access data that has been sent
DavidElmoRoss 1:8c684ad7d00e 23 char* Private_Key = "PrivateKeyGoesHere"; // Private Key is sent with Public Key with every data xfer
DavidElmoRoss 1:8c684ad7d00e 24 char* ServerIP = "data.sparkfun.com"; // Server IP is data.sparkfun.com
janhavi 0:9eca947a9efa 25
DavidElmoRoss 1:8c684ad7d00e 26 EthernetInterface ethernet; // define ethernet to be of type EthernetInterface
janhavi 0:9eca947a9efa 27
janhavi 0:9eca947a9efa 28 int main()
janhavi 0:9eca947a9efa 29 {
DavidElmoRoss 1:8c684ad7d00e 30 int counter; // used as a counter to send a fixed number of values
DavidElmoRoss 1:8c684ad7d00e 31 putchar(0x1b); // clears the PC screen
DavidElmoRoss 1:8c684ad7d00e 32 printf("[2J");
DavidElmoRoss 1:8c684ad7d00e 33
DavidElmoRoss 1:8c684ad7d00e 34 printf("Start\r\n"); // send START message to PC screen
DavidElmoRoss 1:8c684ad7d00e 35 float fahrenheit; // set up fahrenhiet as a float
DavidElmoRoss 1:8c684ad7d00e 36 float celsius=5.0; // set celcius to 5.0
DavidElmoRoss 1:8c684ad7d00e 37
janhavi 0:9eca947a9efa 38 while(1)
janhavi 0:9eca947a9efa 39 {
DavidElmoRoss 1:8c684ad7d00e 40 int ret = ethernet.init(); // ret gets result of ethernet.init()
DavidElmoRoss 1:8c684ad7d00e 41 // 0 means that initialization was successful
DavidElmoRoss 1:8c684ad7d00e 42 if (!ret) // if initialization WAS successful
DavidElmoRoss 1:8c684ad7d00e 43 { // output the MAC address
DavidElmoRoss 1:8c684ad7d00e 44 printf("Initialized, MAC: %s\r\n", ethernet.getMACAddress());
DavidElmoRoss 1:8c684ad7d00e 45 ret = ethernet.connect(); // ret gets result of ethernet.connect()
DavidElmoRoss 1:8c684ad7d00e 46 if (!ret) // 0 means that connection was successufl
DavidElmoRoss 1:8c684ad7d00e 47 { // if connection print out IP MASK and GATEWAY
DavidElmoRoss 1:8c684ad7d00e 48 printf("IP: %s, MASK: %s, GW: %s\r\n",
janhavi 0:9eca947a9efa 49 ethernet.getIPAddress(), ethernet.getNetworkMask(), ethernet.getGateway());
janhavi 0:9eca947a9efa 50 }
DavidElmoRoss 1:8c684ad7d00e 51 else // if no connection then Print error and terminate
janhavi 0:9eca947a9efa 52 {
DavidElmoRoss 1:8c684ad7d00e 53 printf("Error ethernet.connect() - ret = %d\r\n", ret);
janhavi 0:9eca947a9efa 54 exit(0);
janhavi 0:9eca947a9efa 55 }
janhavi 0:9eca947a9efa 56 }
DavidElmoRoss 1:8c684ad7d00e 57 else // if ethernet would NOT initialize, print error and terminate
janhavi 0:9eca947a9efa 58 {
DavidElmoRoss 1:8c684ad7d00e 59 printf("Error ethernet.init() - ret = %d\r\n", ret);
janhavi 0:9eca947a9efa 60 exit(0);
janhavi 0:9eca947a9efa 61 }
DavidElmoRoss 1:8c684ad7d00e 62 TCPSocketConnection sock; // define sock to be of type TCPSocketConnection
DavidElmoRoss 1:8c684ad7d00e 63
janhavi 0:9eca947a9efa 64 int ret_t;
DavidElmoRoss 1:8c684ad7d00e 65 char http_cmd[256]; // set up 256 byte buffer for http commands sent to Sparkfun
DavidElmoRoss 1:8c684ad7d00e 66 for(counter=1;counter<=10;++counter)
janhavi 0:9eca947a9efa 67 {
DavidElmoRoss 1:8c684ad7d00e 68 sock.connect(ServerIP, 80); // connect to SPARFUN on PORT 80 and print server IP
DavidElmoRoss 1:8c684ad7d00e 69 printf("Server IP: %s", ServerIP);
DavidElmoRoss 1:8c684ad7d00e 70 if(sock.is_connected()) // if connection is made say Socket Connected
janhavi 0:9eca947a9efa 71 printf("Socket Connected\n\r");
janhavi 0:9eca947a9efa 72 else
DavidElmoRoss 1:8c684ad7d00e 73 { // else print Socket NOT connected
DavidElmoRoss 1:8c684ad7d00e 74 printf("Socket NoT Connected\n\r");
DavidElmoRoss 1:8c684ad7d00e 75 printf("\r\n Program has halted");
DavidElmoRoss 1:8c684ad7d00e 76 exit(0);
DavidElmoRoss 1:8c684ad7d00e 77 }
DavidElmoRoss 1:8c684ad7d00e 78 // format string http_cmd
DavidElmoRoss 1:8c684ad7d00e 79 fahrenheit= ((9.0/5.0)*celsius + 32);
DavidElmoRoss 1:8c684ad7d00e 80 sprintf(http_cmd,"GET /input/%s?private_key=%s&fahrenheit=%0.1f&celsius=%.1f HTTP/1.0\n\n",Public_Key,Private_Key,fahrenheit, celsius);
DavidElmoRoss 1:8c684ad7d00e 81 // send formatted string
janhavi 0:9eca947a9efa 82 sock.send_all(http_cmd, sizeof(http_cmd)-1);
DavidElmoRoss 1:8c684ad7d00e 83 printf("\tcelsius =%.1f\tfahrenheit=%.1f\r\n",celsius,fahrenheit);
janhavi 0:9eca947a9efa 84
DavidElmoRoss 1:8c684ad7d00e 85 sock.close(); // close the socket
DavidElmoRoss 1:8c684ad7d00e 86 // station++;
DavidElmoRoss 1:8c684ad7d00e 87 celsius+=1.1;
janhavi 0:9eca947a9efa 88 wait(5);
janhavi 0:9eca947a9efa 89 }
DavidElmoRoss 1:8c684ad7d00e 90 printf("\r\n\r\nProgram has halted - all data sent.");
DavidElmoRoss 1:8c684ad7d00e 91 exit(0);
janhavi 0:9eca947a9efa 92 }
janhavi 0:9eca947a9efa 93
janhavi 0:9eca947a9efa 94
janhavi 0:9eca947a9efa 95 }