Connect Edge 2 DEBUG (TTL) to PC with USB to TTL converter. Developers need to install serial port tools on the PC to obtain debugging information.
Preparing USB to TTL Converter
There are many USB to TTL Converters, divided by chip, there are the following:
- FT232
- CP210X
- PL2303
- CH340
Note: The default baud rate of Edge 2 DEBUG is 1500000bps. Some converter chips baud rate cannot reach 1500000bps. Please confirm whether it meets the requirements of Edge2 baud rate before purchasing.
Hardware Connection
By connecting the PC and Edge 2 DEBUG, developers can obtain the debugging information. The USB to TTL Converter may have multiple pins. Connect Edge 2 DEBUG to the following three pins.
- GND，Ground, connect to GND pin of the board.
- TXD，Transmit，connect to RX pin of the board.
- RXD，Receive, connect to TX pin of the board.
Note: If you encounter the problem that TX and RX cannot input and output when using other serial adapters, you should check if the TX and RX connections are correct or not.
The connection of Edge 2 DEBUG and USB to TTL converter, FT232, is as follows:
Parameter Setting
Edge 2 DEBUG serial parameters:
- Baud rate: 1500000
- Data bit: 8
- Stop bit: 1
- Parity check: none
- Flow control: none
Serial Debug on Windows
Follow the steps below to obtain serial debugging information on Windows.
Hardware Connection
Refer to above Hardware Connection
Install Driver
Download
Install
Unzip the zip file and select the corresponding file (exe) to install according to the PC architecture (32-bit, 64-bit). If only one installation file (exe) can be installed, select the default installation file (exe) to install.
After the USB to TTL converter is plugged into the PC, the Windows system prompts for new hardware, and then you can find the corresponding COM port in the device manager:
Install Serial Debug tool
In order to obtain the serial debugging information, you need to install the serial debug tool on Windows.
Download
Putty or SecureCRT is generally used on Windows. See SecureCRT to download.
Install
Select the corresponding file (exe, msi) to install according to the PC architecture (32-bit, 64-bit).
Configure
- Open SecureCRT
- The first time you use SecureCRT, it will jump out of the Quick Connect configuration directory
- Select protocol to serial
- Select Port as the COM port found in the device manager (COM3 USB Serial Port)
- Manually select the baud rate as 1500000
- Turn off XON/XOFF
- Click Connect
Serial Debug on Ubuntu
To obtain the serial debugging information, you need to install the serial debug tool on Ubuntu. There are a variety of serial debug tools on Ubuntu, such as minicom, picocom and so on.
The following examples illustrate the steps to use picocom under Ubuntu.
Hardware Connection
Refer to above Hardware Connection
Install serial debug tool
sudo apt-get update
sudo apt-get install picocom
View serial device number
After the USB-to-TTL converter is connected to the PC (Ubuntu), the device number of the serial is displayed in the /dev directory as ttyUSB[0, 1, 2....], taking ttyUSB0 as an example:
username@ubuntu:~$ ls /dev/ttyUSB0
/dev/ttyUSB0
Operate serial debug tool
-b is to set the baud rate
sudo picocom -b 1500000 /dev/ttyUSB0
picocom v2.2
port is : /dev/ttyUSB0
flowcontrol : none
baudrate is : 1500000
parity is : none
databits are : 8
stopbits are : 1
escape is : C-a
local echo is : no
noinit is : no
noreset is : no
nolock is : no
send_cmd is : sz -vv
receive_cmd is : rz -vv -E
imap is :
omap is :
emap is : crcrlf,delbs,
Type [C-a] [C-h] to see available commands
Terminal ready
console:/ $
console:/ $
console:/ $
console:/ $
Exit picocom
To exit picocom, you need to follow the steps below.
- Press the key combination CTRL+A
- Don’t release CTRL, release A
- Do not release CTRL, press Q
Serial Debug on macOS
Except for the difference in the installation method, the usage is the same as in the Serial Debug on Ubuntu
Install serial debug tool
$ brew install picocom
Note: You need to install brew first before using above command. There may be a long wait time or no response when installing this software with brew. You may need to may need to manually execute CTRL+C once to continue the installation.