Hi! I am encountering an issue with sending random data to the Adafruit cloud using the EtherCard library. I am using the ENC28J60 module.
EtherCard library: EtherCard GitHub Repository
The EtherCard library already contains demo code for ThingSpeak, which I have adjusted slightly for Adafruit IO.
Edited Code:
#include <EtherCard.h>
#include <SPI.h>
// change these settings to match your own setup
//#define FEED "000"
#define APIKEY "aio_urqj942oEQKHVvpnePSKgTijOEQy" // put your key here
// ethernet interface mac address, must be unique on the LAN
static byte mymac[] = { 0x74,0x69,0x69,0x2D,0x30,0x31 };
const char website[] PROGMEM = "io.adafruit.com";
const char url[] PROGMEM = "/api/v2/VEGAProcessors/feeds/random/data";
byte Ethernet::buffer[700];
uint32_t timer;
Stash stash;
byte session;
char data[250] = {0,};
//timing variable
int res = 100; // was 0
void initialize_ethernet(void){
for(;;){ // keep trying until you succeed
//Reinitialize ethernet module
//pinMode(5, OUTPUT); // do notknow what this is for, i ve got something elso on pin5
//Serial.println("Reseting Ethernet...");
//digitalWrite(5, LOW);
//delay(1000);
//digitalWrite(5, HIGH);
//delay(500);
// Change 'SS' to your Slave Select pin, if you arn't using the default pin
if (ether.begin(sizeof Ethernet::buffer, mymac, SS) == 0){
Serial.println( "Failed to access Ethernet controller");
continue;
}
if (!ether.dhcpSetup()){
Serial.println("DHCP failed");
continue;
}
ether.printIp("IP: ", ether.myip);
ether.printIp("GW: ", ether.gwip);
ether.printIp("DNS: ", ether.dnsip);
if (!ether.dnsLookup(website))
Serial.println("DNS failed");
ether.printIp("SRV: ", ether.hisip);
//reset init value
res = 180;
break;
}
}
void setup () {
delay(1000);
Serial.begin(115200);
Serial.println("\n[Adafruit example]");
//Initialize Ethernet
initialize_ethernet();
}
void loop () {
//if correct answer is not received then re-initialize ethernet module
if (res > 220){
initialize_ethernet();
}
res = res + 1;
ether.packetLoop(ether.packetReceive());
//200 res = 10 seconds (50ms each res)
if (res == 200) {
/*
// Generate random info
float demo = random(0,500);
//word one = random(0,500);
char* msje;
if (demo < 250){
msje = "low";
}
else{
msje = "high";
}
*/
int demo = random(100);
memset(data,0,250);
sprintf(data,"{\"value\": %d}",demo);
/*
// generate two fake values as payload - by using a separate stash,
// we can determine the size of the generated message ahead of time
// field1=(Field 1 Data)&field2=(Field 2 Data)&field3=(Field 3 Data)&field4=(Field 4 Data)&field5=(Field 5 Data)&field6=(Field 6 Data)&field7=(Field 7 Data)&field8=(Field 8 Data)&lat=(Latitude in Decimal Degrees)&long=(Longitude in Decimal Degrees)&elevation=(Elevation in meters)&status=(140 Character Message)
byte sd = stash.create();
stash.print("field1=");
stash.print(demo);
//stash.print("&field2=");
//stash.print(one);
//stash.print("&field3=");
//stash.print(msje);
stash.save();
*/
//Display data to be sent
Serial.println(demo);
// generate the header with payload - note that the stash size is used,
// and that a "stash descriptor" is passed in as argument using "$H"
Stash::prepare(PSTR("POST $F HTTP/1.0" "\r\n"
"Host: $F" "\r\n"
/*"Connection: close" "\r\n"*/
"X-THINGSPEAKAPIKEY: $F" "\r\n"
"Content-Type: application/json" "\r\n"
"Content-Length: $D" "\r\n"
"\r\n"
"$F"),
url, website, PSTR(APIKEY), sizeof(data), data);
// send the packet - this also releases all stash buffers once done
session = ether.tcpSend();
// added from: http://jeelabs.net/boards/7/topics/2241
int freeCount = stash.freeCount();
if (freeCount <= 3) { Stash::initMap(56); }
}
const char* reply = ether.tcpReply(session);
if (reply != 0) {
res = 0;
Serial.println(F(" >>>REPLY recieved...."));
Serial.println(reply);
}
delay(300);
}
You can find the original ThingSpeak code at the following link: ThingSpeak Code on GitHub
Please assist me with this issue. Thank You.
