Hello,
I’m developing a device, arduino based, for upload a meteo data to ubidots platform. I have a question about a possibility to upload a bulk file with absolute time stamp. Does it possible to Write many entries to my channel, with a single http request in Ubidots Environment?
I use arduino uno and sim 900 ( Ubidots Arduino GPRS library).
Thank you
Francesco-Italy
Hello @idroino,
Firstly, I would like to clarify something… What do you mean by “Absolute timestamp”?
To upload multiple data with a different timestamp in single HTTP request you should use the following endpoint and payload structure:
http://things.ubidots.com/api/v1.6/devices/{LABEL_DEVICE}/{VARIABLE_LABEL}/values
[{“value”: 10, “timestamp”:1464661369000}, {“value”: 12, “timestamp”:1464661369999}, {“value”:n, “timestamp”:n}]
Please, refer to this link to find all the information needed.
All the best,
Maria C.
Thank you very much.This is exatly that I wondering.
For Absolute timestamp i i mean a value that has a specific time of entry, different of the upload time, in ubidots personal dashboard.
I have another question about the code:
I use a specific library ubidots-arduino-gprs for connect my sim module to Arduino
I try to change this code but the upload don’t works appropiatly:
void loop() {
_ float value = 1;_
_ int timestamp;_
_ sprintf(timestamp, “1525635620”); //Sends latitude and longitude for watching position in a map_
_ client.add(VARIABLE_LABEL, value, timestamp); // Change for your variable name_
_ client.sendAll();_
}
the first part, is the same of Example UbidotsSaveValueWithContext;
Thank you for your help
Francesco P.
Hey Francisco!
I’m glad to read that, we are here to help! 
In the loop of the code I can see that you have assigned the timestamp instead of the context as it’s mentioned in the comments of the code. Based on this, what do you desire to assign a context or timestamp?
Now, based on what you desire to sent you should follow the next points:
Ubidots::add(char *variable_label, double value, char *ctext)
Example:
sprintf(context, "lat=1.2343$lng=132.1233");
client.add(VARIABLE_LABEL, value, context);
Ubidots::add(char *variable_label, double value, char *ctext, long unsigned timestamp_val)
Example:
sprintf(timestamp, "1531143251");
client.add(VARIABLE_LABEL, value, NULL, timestamp); // Change for your variable name
I hope this would help you!
All the best,
Maria C.
Thank you,
yes I’ll send timestamp to ubidots.
I looked at your second example and I wrote the following code (the first part is the same of my last example):
void loop (){
double value = 9999;
long unsigned timestamp;
char context[25];
sprintf(timestamp, “1525635620”); //Sends latitude and longitude for watching position in a map
client.add(VARIABLE_LABEL,value,NULL,timestamp); // Change for your variable name
client.sendAll();
}
Unfortunately the value isn’t loaded on my dashboard.
Maybe something miss in my code, but i don’t now,
Thank you for your help
Francesco P.
Hey @idroino,
Taking a look of the code everything seems to be ok! Anyway, I’m going to make a test by my side and I will let you how everything goes
All the best,
Maria C.
