Raspberry Pi RP5-UART serial port download and debugging mod

Date:2024-11-01 Views:

a) About

The LC Raspberry Pi RP5-UART serial port download and debugging module uses the CH340E chip, which supports half duplex signal transmission between USB and TTL, with a transmission distance of up to 1200 meters (tested at 9600bps). It comes with a signal transmission and reception indicator light, including USB Type-A interface input, 6PIN bent pin interface+3PIN horizontal seat interface output, and supports 5V-3.3V voltage conversion function. It has the advantages of long-distance transmission, low signal transmission delay, low power consumption, stable and safe communication.

b) View

①Front view

②Side view

③Reverse image

c) Functional Features

Dual voltage switching, long-distance transmission
Low latency, low power consumption
Supports half duplex transmission and reception between USB and TTL
Support 5V to 3.3V voltage conversion function (jumper cap must be jumped between VCC/3V3)
Onboard USB Type-A input interface, 6PIN bent pin interface+3PIN serial port horizontal seat interface
Supports multiple devices such as Mac, Linux, Android, Windows 7/8/8.1/10/11, etc

d) Introduction and Explanation

Board size：34mm * 20mm/5g

Interface Introduction

1. USB: USB Type-A input interface
2. LED power indicator light
3. LED transceiver indicator light
4. ME6211C33M: 5V to 3.3V
5. Bending pin interface: CTS ->RTS ->TXD ->RXD ->GND ->5V from top to bottom
6. Serial port horizontal terminal: TXD - GND - RXD
7. Voltage conversion pins: Use jumper caps to select voltage
8. MCU: CH340E chip

e) CH340E driver installation and usage instructions

CH340E driver installation process

Official download website：https://www.wch.cn/downloads/CH343SER_EXE.html

1. Go to the official website to download the Windows VCP serial port driver CH343SER EXE 。

2. Insert this communication module into the USB port of the computer, double-click to open the program, click the installation button, and wait for the installation to complete.

3. The pop-up window displays "Driver installation successful". Go to the device manager to check the port status. If CH340 is displayed normally, it means that the driver installation is successful.

f) RP5 serial port debugging

Suitable for Raspberry Pi5, supports multiple wiring methods, can be connected to PI5 Debug interface through 3PIN serial port horizontal terminal, as shown in the figure:

Connect the Raspberry Pi 5_40PIN UART interface through the 6PIN bent pin interface, as shown in the figure:

As shown in the above figure, the 40PIN pin allocation diagram of PI5 can be connected to pins 4-6-8-10 respectively.

g) Module testing

1. Mode testing - single module
(1) Insert the module into the USB port of the computer;
(2) Open the serial debugging software SSCOM and select the corresponding COM port;
(3) Short circuit RXD and TXD. Connect the RXD and TXD pins using DuPont wires or jumper caps;
(4) Select a baud rate of 115200, open the serial port, and send data as shown in the following figure:

Display S: 1056-R: 1056, information transmission is normal and error free, with no packet loss.

2. Mode testing - dual module
(1) Connect the two modules to the computer;
(2) Open two serial port debugging software XCOM and select the corresponding COM port, paying attention to the serial port parameters on the upper computer
Consistency must be maintained;
(3) Connect the TXD and RXD of the two modules one by one, note that TXD is connected to RXD, and RXD is connected to TXD.
(4) Select a consistent baud rate, open the serial port, and exchange data, as shown in the following figure: