How to Use SMTP Using My Mcu

I'm trying to make smtp protocol using my mcu & ethernet(W5500)

There are 3 steps for sending e-mail

1. Establish TCP session with SMTP server (3way handshaking)
2. Response & Requset SMTP Command
3. Close the session

SMTP link:

• SMTP: http://en.wikipedia.org/wiki/Simple_Mail_Transfer...
• MIME: http://en.wikipedia.org/wiki/MIME#Multipart_.EB.A...

Just used W5500-EVB(Ethernet evaluation board) for sending e-mail.

• mcu: LPC11E36(CM0) included in W5500-EVB
• etc: MAC address
• ethernet: W5500

W5500 wiki page: http://wizwiki.net/wiki/doku.php?id=products:w5500:start

Tools

• software: LPCxpresso
• downloader: Flash magic
• etc: Hercules(Serial terminal) for debug

There are 8 functions for send e-mail but you can use 2 functions for use it.

1. SendMail()

• server = SMTP server address
• from = your full e-mail address (ex: abcd@eee.com)
• pwd = password
• to[] = receiver e-mail address
• cc[] = receiver e-mail address(carbon copy)
• subject = subject
• body = body
• auth = you can choose 2 options between 'SMTP_AUTH_NONE' and 'SMTP_AUTH_PLAIN'
• FileAttached = if you want to send some files, you cans choose a option instead of 'FILE_DISABLE'

2. AttachFile()

• filename = file name (ex: abc.txt)
• filebody = file body
• filetype = ZIP, TXT, JPG, BIN
• Used sntp.h for getting the time.

** I'll upload the entire source code at github and write link after modified a bit

I was able to confirm that the CC and txt File arrives.