Luckfox Pico RV1103【Tutorial on how to use UART】

The LuckFox Pico has three serial ports: UART2, UART3, and UART4. Among them, UART2 is the debug port.

The LuckFox Pico Plus has four serial ports: UART2, UART3, UART4, and UART5. Among them, UART2 is the debug port.

】Performing serial port testing using the GPIO sysfs interface：

(The following operations need to be performed in the terminal of the Pico development board.)

1] View serial port：

root@linaro-alip:/home/linaro# ls /dev/ttyS*

/dev/ttyS3 /dev/ttyS4

##The serial port devices here are UART3 and UART4

2] Use the “stty” tool to query the serial port communication parameters：

linaro@linaro-alip:~$ stty -F /dev/ttyS3

speed 9600 baud; line = 0;

-brkint -imaxbel

##The default baud rate is 9600

3] Modify the baud rate, where ispeed is the input rate and ospeed is the output rate：

stty -F /dev/ttyS3 ispeed 115200 ospeed 115200

4] Disable echo：

stty -F /dev/ttyS3 -echo

## Disabling echo refers to the situation where the characters entered in the terminal or serial communication are no longer displayed on the terminal.

5] Operation process screenshot:

】Communicating with a Windows host：

Connect one end of the serial port module to the computer, and the other end to the physical pins 18 (GND), 19 (UART7_TX), and 20 (UART7_RX) of the LuckFox Pico.

Download and open PuTTY (or any other serial port software), select the serial port, and set the baud rate (default is 9600, please adjust it according to your actual modified value).

Execute the following command on the terminal of the development board to write the strings “Hello” and “world!” to the terminal device file using the echo command:

echo Hello > /dev/ttyS3

echo "world !" > /dev/ttyS3

The serial port debugging assistant on Windows will receive the content:

】Test the built-in sample program of the official SDK：

1] Download SDK&Compiling test example code or download Compiled example code.:

SDK GitHub Download

2] Transfer the test example code file to the development board.

(The following operations need to be performed in the terminal of the Pico development board)

3] Run the test sample program:

chmod 777 ./luckfox_uart_test

## Grant executable permissions to the file

./luckfox_uart_test 3

##The parameter 3 in the example represents UART3.

4] Open the serial communication device to receive data:

TAG： Wiki TTL To CAN Mini SpotPear Milk-V Duo S Usage of USB Type A interface Raspberry Pi AI HAT+ Official Original Hailo-8/8L 13/26Tops For Pi5 PCIe M.2 Gen3 Desktop Ornament Raspberry Pi 8 inch DSI MIPI LCD TouchScreen Display 8inch 800x1280 For Luckfox Lyra RK3506/ESP32-P4/Luckfox Omni3576 ESP32-S3 Industrial 8-CH Relay IOT LAN WiFi /Bluetooth /CAN /RJ45 Ethernet /POE Raspberry Pi 5 8 inch DSI LCD Captive TouchScreen MIPI Display 1280x800 Industrial One-Body Tablet PC With 5MP Front Camera 0.99inch Raspberry Pi 5 Fan Raspberry Pi 10.1 inch DSI LCD TouchScreen Display 800x1280 Also For RK3576/RK3506/ESP32-P4 Raspberry Pi IR Thermal Imaging Camera RV1103 SC3336 HDMI to RGB Raspberry Pi 5 PCIe to USB3.2 Gen1 Hub 5Gbps For Raspberry Pi OS Drive free IO BASE MINI Board Raspberry Pi 5 Argon-NEO-M.2-NVME-PCIE-Expansion-Board Only For Argon NEO 5 Case (Not include) 1.5inch LCD LuckFox

【First-level Agency】LuckFox Pico Linux RV1103 Rockchip AI Board ARM better than Raspberry Pi Pico

TAG： CPU AI Board Raspberry Pi Pico 2 RP2350 RP2350B-Plus-W Development Board WiFi Bluetooth Radio Module 2 ESP32-S3 Raspberry Pi 500+ plus Personal computer Mechanical Keyboard With official SSD and Programmable RGB Radxa-Zero Raspberry Pi 11.9inch LCD Industrial USB TO RS485 RS422 to CAN 5V/3A Regulated Output CVITEK CV1800B SG2000 SG2002 64MB 256MB 512MB RISC-V DRAM-64M Chip Raspberry Pi WatchDog Arducam SpotPear Serial UART Bus Servo ST3020 TTL 25KG.CM Magnetic-Encoder High precision and Large torque Raspberry Pi 5 PoE HAT G Power over Ethernet 802.3af at ESP32-S3 Raspberry Pi 5 Jetson Xavier NX Kit 1.91-Inch AMOLED

Luckfox Pico RV1103【Tutorial on how to use UART﻿】

【First-level Agency】LuckFox Pico Linux RV1103 Rockchip AI Board ARM better than Raspberry Pi Pico

Luckfox Pico RV1103【Tutorial on how to use UART】