Using Mac to connect Raspberry Pi 4

1. Edit the config

• using the usb to write the TF card
• open /boot/wpa_supplicant.conf

• insert the data

  country=CN
  update_config=1
  ctrl_interface=/var/run/wpa_supplicant
  
  network={
     ssid="<wifi 名称>"
     psk="<wifi 密码>"
  }

• click here to format the data.

2. TTL to connect

Edit the config

# edit TF card `/boot/config.txt` 

# add the content

enable_uart=1

Install the device drive in mac

1. ch340g Drive
2. PL2303 Drive

Check for success

> ls /dev | grep tty.usb

# if appear tty.usbserial  , it was scucuessful

Connection

GND->Groud
RXD->GPIO 14(TXD)
TXD->GPIO 15(RXD)

if you have power supply, please remove the 5v red line

Install Screen to ssh

> brew install screen
> screen /dev/tty.usbserial 115200

Uninstall the drive

> rm -rf /System/Library/Extensions/XXXX.kext
> rm -rf /System/Library/Extensions.kextcache
> rm -rf /System/Library/Extensions.mkext
> kextcache -k /System/Library/Extensions