ftp.put()

ftp.put(addr,user,password,data,mode) → number

FTP File Write / Append

Write to a file on a ftp server.

Mode argument determines whether the file is overwritten or appended to.

Useful for uploading test results, etc to a remote server.

Testing

Run python3 -m pyftpdlib -w -p2121 -u logger -P secret on a local linux workstation to spin up a FTP server instance for testing Requires installing pyftpdlib with pip install pyftpdlib or sudo apt-get install python3-pyftpdlib etc.

Security Considerations

FTP is considered an insecure file transfer protocol, use only on a private or restricted network.

Arguments

Name	Type	Required	Default	Description
address	string	yes	—	e.g. "10.0.0.1:21/log.txt"
user	string	optional	—	anonymous
password	string	optional	—	default = blank
data	string	yes	—	payload
mode	number	optional	0	0 = write, 1 = append

Returns

number 0 = success, >0 = error code

Example

while(run()){

let voltage = 14.5;
let msg = datetime().epoch.toFixed() + "\t" + voltage.toFixed(4) + "V"; // create a string with the epoch timestamp followed by the measurement value

// msg = 141312433142        13.6043V

let res = ftp.put("172.16.220.220:2121/voltage.log","logger","secret",msg,1);  // append to the voltage.log file 
print(res);
waitMS(5000); // log every 5 seconds
}