🛠 Premier script Python : fiche signalétique de la carte et LED

Objectives

Write your first Python script on the Orange Pi 5 Plus: read the board's identification data (device-tree model, number of cores, CPU temperature) from /sys and /proc, then blink the LED from tutorial 1 using Python via libgpiod. The RK3588 exposes 8 cores (4 Cortex-A76 up to 2.4 GHz + 4 Cortex-A55 up to 1.8 GHz): the script counts them automatically.

Hardware

• Orange Pi 5 Plus running Armbian or Orange Pi OS image (ARM64 Debian/Ubuntu)
• LED + 330 Ω resistor on pin 7 (tutorial opi5p-led-gpio)
• Packages: sudo apt install -y python3 python3-gpiod

Complete code

#!/usr/bin/env python3
"""Fiche signalétique Orange Pi 5 Plus + clignotement LED (broche 7)."""
import pathlib, platform, time
import gpiod  # API v1 (libgpiod 1.x, images Debian 11 / Ubuntu 22.04 / Armbian)

def read(path):
    try:
        return pathlib.Path(path).read_text.strip("\x00").strip
    except OSError:
        return "n/a"

print("Modèle  :", read("/proc/device-tree/model"))
print("Machine :", platform.machine)
print("Cœurs   :", len(list(pathlib.Path("/sys/devices/system/cpu").glob("cpu[0-9]*"))))
for z in sorted(pathlib.Path("/sys/class/thermal").glob("thermal_zone*/temp")):
    print("Temp    :", z.parent.name, int(z.read_text) / 1000.0, "°C")

chip = gpiod.Chip("gpio1")
line = chip.get_line(30)  # broche 7 = GPIO1_D6
line.request(consumer="tuto", type=gpiod.LINE_REQ_DIR_OUT)
for _ in range(3):
    line.set_value(1); time.sleep(0.3)
    line.set_value(0); time.sleep(0.3)
line.release
print("Terminé.")

Expected verification

python3 fiche.py displays "Xunlong Orange Pi 5 Plus", aarch64, 8 cores, one or more temperatures (30 to 50 °C at idle), then the LED blinks 3 times. The mainline device-tree has the compatible string xunlong,orangepi-5-plus.

Common errors

• libgpiod API: the example uses the v1 API (get_line/request) found in shipped distributions; recent images with libgpiod 2.x have a different API (chip.find_line, line-based requests).
• Running without GPIO permissions: run with sudo if the user is not in the gpio/render group.
• Forgetting line.release: the line remains claimed and gpioset subsequently fails with GPIOBUSY.
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