- Book mode https://hackmd.io/@ncnu-opensource/book

[TOC]

# raspberry pi
### 與 Pi 溝通 / 透過 UART
> 支援 UART 傳輸的驅動程式
> [Windows Driver](https://drive.google.com/uc?id=1NNhZ7LnnhPWTIAEpqjt8Gkd5QkTqtFsE&export=download)
### 開機時自動發送 IP 到自己的信箱

#!/usr/bin/python
import subprocess
import smtplib
import socket
from email.mime.text import MIMEText
import datetime

# Which email address want to send
# 明文的帳密
to = ''

# Using specific mail account
user = ''
password = ''
# SMTP command
smtpserver = smtplib.SMTP_SSL('smtp.gmail.com', 465)
smtpserver.login(user, password)
today = datetime.date.today()

# Linux Specific shell command
arg='hostname -I'
p=subprocess.Popen(arg,shell=True,stdout=subprocess.PIPE)
data = p.communicate()
split_data = data[0].split()
ipaddr = split_data[0].decode("utf-8")
my_ip = 'Your ip is %s' %  ipaddr
msg = MIMEText(my_ip)
msg['Subject'] = 'IP For RaspberryPi on %s' % today.strftime('%b %d %Y')
msg['From'] = user
msg['To'] = to
smtpserver.sendmail(user, [to], msg.as_string())
smtpserver.quit()

1. 在家目錄建一個寄 email 的程式
- `vim mail.py`
2. 複製貼上上面的程式碼，儲存之後執行看看
- `python mail.py`
3. 成功執行的話，增加該檔案的執行權限
- `chmod +x ./mail.py`
4. 在( `/etc`下 ) `rc.local` 裡增加執行該檔案
- 結尾的 `&` :　在背景執行