QCA4020
Table Of Contents
- Purpose of the Document
 - Document History
 - 1 Introduction
 - 2 QCA4020 miniPCIe Layout
 - 3 QCA4020 miniPCIe Pin Out
 - 4 How to flash Image to QCA4020 miniPCIe
 - 5 QCA4020 Pin Out
 - 6 Software Tools to be Installed
 - 7 Setting Up the Software Development Environment
 - 8 Importing “Hello World” Application
 - 9 Building “Hello World” Application
 - 10 Flash the Application to the QCA4020 miniPCIe using USB
 - 11 Flash the Application to the QCA4020 miniPCIe using JTAG
 - 12 Connecting QCA4020 to Serial Terminal Through UART
 - 13 Using Serial Terminal
 - 14 QCLI Demo Application
 
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QCA4020 miniPCIe    Copyright © 5GHUB.US 
12 Connecting QCA4020 to Serial Terminal Through UART 
You can use the QCA4020 miniPCIe when mounted on USB adaptor (HAT) with any device that has UART 
(Tx/Rx) interface such as a Raspberry PI board, Arduino board or any other hardware board, with UART 
interface. 
You can also use and connect the 
QCA4020 miniPCIe/USB adaptor (HAT) 
to a USB port in the 
computer through a 
USB-to-UART 
cable. You can use cable such as this one: 
USB TO UART TTL (Wires) Serial Cable (PL2303HX) MCP00102W Programmer Arduino Compatible in 
Elecrow bazaar! 
Such a cable has four wires colored as follow: 
Red: +5V 
White: Tx 
Green: Rx 
Black: GND 
Connect the White cable to UART_TX and Green cable to UART_RX. Also connect the Black cable to the 
GND). 
As in the picture below, connect UART_TX to SJ2 (PIN2) AND UART_RX to SJ1 (PIN2). 










