RockPi-S
Karel Slavicek
Vaclav Oujezsky
2024
Content
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Hardware Overview
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Getting started
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Ovelays
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Libraries
Hardware Overview
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Linux based microcontroller
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USD instead of disk
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Most of common
interfaces
Development board
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UART = UART0
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I2C = I2C1
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SPI = SPI2
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GP1 = GPIO2_A5
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GP2 = GPIO0_C0
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GP3 = GPIO2_B2
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GP4 = GPIO0_C1
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GP5 = GPIO2_B4
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GP6 = GPIO2_B0
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GP7 = GPIO2_B3
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GP8 = GPIO2_A6
Download and Flash Debian Image
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Etcher - flash application
– https://etcher.balena.io/#download-etcher
– balenaEtcher-1.18.11-x64.AppImage
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Debian Image
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https://wiki.radxa.com/RockpiS/downloads
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https://is.muni.cz/auth/el/fi/podzim2023/PV284/um/lab_examples/rock
pi/
Connection to RockPI
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adb shell
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Debian: apt-get install adb
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Windows:
– https://wiki.radxa.com/Rock/windows_adb
– https://www.getdroidtips.com/how-to-install-adb-and-fastboot-
on-windows/
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ip add – get ip address
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Putty / ssh
– Username rock, password rock
RockPi S pinout
Tuning /boot/uEnv.txt
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fdtfile=rockchip/rk3308-rock-pi-s.dtb
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overlays=rk3308-console-on-uart0 rk3308-i2c0
rk3308-i2c1 rk3308-i2c3-m0
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console=ttyS0,9600n8
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rootuuid=37055840-4ec4-444f-979b-9e47ee4bd848
Dealing with GPIO
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Direct work with GPIO possible but uncomfortable:
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cd /sys/class/gpio
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echo X > export
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X = 32*Gpio_num + 8*Gpio_gate + Gpio_pin
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Gpio_gate A=0, B=1, …
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cd gpioX
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echo out > direction
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echo 1 > value
Install libraries
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https://wiki.radxa.com/RockpiS/dev/libmraa
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apt-get update -- fix-missing
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apt-get upgrade
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apt-get install libmraa
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apt-get install -y build-essential
libmraa
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mraa-gpio list
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A test with push-button application:
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mrra-gpio set 12 0
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12 = GP-1 GPIO2_A5 (LED pin
in the hardware description)
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0 = pin’s value
libmraa
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cp -av /usr/local/share/mraa/examples/c
/home/rock/mraa-examples
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cd /home/rock/mraa-examples
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Compiling - example:
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rock@rockpis:~/mraa-examples$ gcc -o test-spi testspi.c
-lmraa
libmraa - examples
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All materials can be found on GIT FI after logging in with your faculty
account.
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https://gitlab.fi.muni.cz/iot-courses/pv284/-/tree/main/Labs/Lab6-rock-pi?
ref_type=headshttps://is.muni.cz/auth/go/acxh39
Now it is the time for
your own experiments!