SIM 7000X NB-loT HAT 樹莓派PPP撥號上網教程
阿新 • • 發佈：2021-01-07
一．準備
硬體準備
- 樹莓派 一套
- SIM7000C NB-IoT HAT 一套
軟體準備
- 安裝minicom
apt-get install minicom
- 檢視dev下面有沒有ttyS0,如果沒有需要配置下串列埠
ls /dev/ttyUSB*
二．AT指令除錯（可選）
- 進入minicom
sudo minicom -D /dev/ttyS0
- 檢查sim卡是否接觸良好：
AT+CPIN?
- 檢查網路模式設定是否正確：
AT+CNMP?
- 檢查當前環境的訊號質量：
AT+CSQ
- 檢查運營商接入情況：
AT+COPS?
- 檢查聯網情況：
AT+CPSI?
- 檢查是否成功註冊到網路：
AT+CREG?
三．PPP撥號
- 切換到root賬號
sudo su
- 安裝ppp
sudo apt-get install ppp
- 進入/etc/ppp/peers目錄,
cd /etc/ppp/peers
- 建立gprs檔案
sudo nano gprs
- 將下面文字複製到 gprs
（如果需要USB撥號，把ttyS0改位ttyUSB2）內容如下：
# example configuration for a dialup connection authenticated with PAP or CHAP # This is the default configuration used by pon(1) and poff(1). # See the manual page pppd(8) for information on all the options. # MUST CHANGE: replace[email protected] with the PPP login name given to # your by your provider. # There should be a matching entry with the password in /etc/ppp/pap-secrets # and/or /etc/ppp/chap-secrets. user "[email protected]" # MUST CHANGE: replace ******** with the phone number of your provider. # The /etc/chatscripts/pap chat script may be modified to change the # modem initialization string. #connect "/usr/sbin/chat -v -f /etc/chatscripts/pap -T ********" connect "/usr/sbin/chat -v -f /etc/chatscripts/gprs" # Serial device to which the modem is connected. #/dev/modem /dev/ttyUSB2 # Speed of the serial line. 115200 nocrtscts debug nodetach ipcp-accept-local ipcp-accept-remote # Assumes that your IP address is allocated dynamically by the ISP. noipdefault # Try to get the name server addresses from the ISP. usepeerdns # Use this connection as the default route. defaultroute # Makes pppd "dial again" when the connection is lost. persist # Do not ask the remote to authenticate. noauth
- PPP撥號
pppd call gprs &
- 檢視ppp0網路
ifconfig
- 測試上網
ping -I ppp0 www.baidu.com
四．開機自啟動PPP撥號（可選）
- 編輯test.sh檔案
sudo nano test.sh
- 複製以下文字到 tesh.sh
sudo su
# sleep 1m
cd /etc/ppp/peers
pppd call gprs &
- 賦予指令碼檔案（例：test.sh，路徑：./home/pi/test.sh）可執行許可權
sudo chmod 777 test.sh
- 開啟/etc/rc.local檔案
sudo nano /etc/rc.local
- 在/etc/rc.local檔案中（語句exit 0 之上一行）新增執行指令碼命令
bash ./home/pi/test.sh
- 然後執行重啟指令碼
./test.sh