Hello,
I am using an Arduino MKR 1400 (https://store.arduino.cc/usa/mkr-gsm-1400).
My main goal is to put my sensor data in a string and send it to the hologram server.
I am trying to send messages to the Hologram server (I followed instructions here: https://help.hologram.io/en/articles/2235031-arduino-mkr-gsm-1400).
I am having issues
I am able to connect and send with this code (setup):
// if you get a connection, report back via serial:
if (client.connect(server, port)) {
//Serial.println("Connected!");
// Send a Message request:
client.println("{\"k\":\"" + HOLOGRAM_DEVICE_KEY +"\",\"d\":\""+ HOLOGRAM_MESSAGE+ "\",\"t\":\""+HOLOGRAM_TOPIC+"\"}");
} else {
// if you didn't get a connection to the server:
//Serial.println("connection failed");
}
I can also send (only does it once) if I place the below code in the loop function.
client.println("{\"k\":\"" + HOLOGRAM_DEVICE_KEY +"\",\"d\":\""+ HOLOGRAM_MESSAGE+ "\",\"t\":\""+HOLOGRAM_TOPIC+"\"}");
My main goal is to put my sensor data in a string and send it to the hologram server.
Here is the output of the variable buf:
Basically its merging all the sensor data into variable “buf” and then setting “HOLOGRAM_MESSAGE” = to “buf” then sending it.
It is not working though. Any ideas why it is not working?
//SEND DATA
//***********************
String buf;
buf += F("OutsideH: ");
buf += String(outsideH, 2);
buf += F("% \nOutsideF: ");
buf += String(outsideF, 2);
buf += F("°F \nOutsideHIF: ");
buf += String(outsideHIF, 2);
buf += F("°F \nSoilM1: ");
buf += String(soilM1, 0);
buf += F("% \nSoilM2: ");
buf += String(soilM2, 0);
buf += F("% \nSoilF1: ");
buf += String(soilF1, 2);
buf += F("°F \nSoilF2: ");
buf += String(soilF2, 2);
buf += F("°F \nEND");
//Serial.println(buf);
//Serial.println();
HOLOGRAM_MESSAGE = buf;
client.println("{\"k\":\"" + HOLOGRAM_DEVICE_KEY +"\",\"d\":\""+ HOLOGRAM_MESSAGE+ "\",\"t\":\""+HOLOGRAM_TOPIC+"\"}");
delay(15000);