Radxa zero uart

Radxa zero uart. Integrated RP2040 Co-Processor for Enhanced Peripheral Control. Device tree overlay is one way which we don’t have yet. up to 22 x GPIO. radxa. UART, I2C, PWM, etc. Community maintained. gguerrer. All are giving below message in the console while connected by UART Any help is highly appreciated. Pin 3, Pin 5, Pin 27, and Pin 28 add extra pull-up resistors for I2C device power supply, so they work abnormally when used as GPIOs. My current /etc/kernel/cmdline looks like this: The following commands work for me: ## Mode mraa sudo mraa-gpio set 40 1 #pin40 pull high, led on sudo mraa-gpio set 40 0 #pin40 pull high, led off v1. Superior Performance, UART; PWM; ADC; I2S; Gigabit Ethernet PHY; Flexible Memory and eMMC Options. There was a problem with the new board out of the box. . txt | egrep enc28 overlays=meson-g12a-uart-ao-a-on-gpioao-0-gpioao-1 meson-g12a-spi-spidev meson-g12a-spi-b-enc28j60 pi@radxa-zero:~$ sudo ifconfig lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127. Added uartC overlay via armbian-config (UART_EE_C - /dev/ttyAML4) However, after booting, the device /dev/ttyAML4 does not appear. Right now we need help getting through the unexpected snags like booting from eMMC, easily accessing the GPIO pins, proper Python and C++ add-ons, and understanding why On Odroid N2 I can export and access GPIO pins via sysfs just fine. 2 Jammy" The idea is to connect a GPS, I had already done this with a The Radxa Zero features a single USB3 HOST port in a type‐C socket, ofering a downstream USB current limit of approximately 1A. Our Ubuntu image contains no desktop environment, makes it suitable to hosting simple home services such as PiHole, WireGuard, and SMB file share. 0 (CM4Lite only) 1 x SDIO 3. 2 Bullseye with bleeding edge Linux 5. 0, and 40-pin GPIO header. 0 with 9V/2A, 12V/2A protocol compatible, or Quick Charge 2. 3V 1C9 4. This means for input they need to So I started to look for alternative SBC's, and found the Radxa Zero which should be faster than a RPi Zero 2 and has the same form factor, except it's USB C instead of USB micro and HDMI micro instead of HDMI mini. 3V DC power in Others One button for force USB boot or firmware upgrading I wonder whether the Zero UARTs can also be easilly adapted to the MIDI speed of 31250 bps. Pay attention to ovelays and console options in below file: The Radxa X4 is an new generation SBC developed by Radxa based on the Intel M. I get both serial console and video output. chengguizi March 2, 2023, 6:48am #2. To use three UART I have to configure the overlays params in the file One reason may be that GPS module sends data to Radxa Zero via GPIOAO_1 pin in U-Boot stage and abort U-Boot boot process. com/Zero/dev/serial From my testing, I used a SanDisk Ultra C10 card, when writing the image from my mac, it shows the speed is around 15 MB/s. Please contact your AMLOGIC sales representative for more information. Hi everyone! I’m trying to flash U-Boot to a Radxa Zero with eMMC using the official guide I successfully build u-boot. Radxa X4 CPU communicating with the MCU RP2040 by obtaining the temperature of the Radxa X4 CPU and making the fan spin up when the specified temperature is reached. Here are the 2 x 40pin 2. bsp environment configuration The following is the recommended environment for bsp. Radxa Zero 2 Pro features a hexa-core 64-bit ARM processor, Currently there are two types of Android image that can be flashed on Radxa Zero: Android OTA image, which is a zip archive with multiple smaller img files in it; and amlupdate image, which is just one big img file. The CAN hat employs Microchip MCP2515 , but its Hi ! Yes, using the Radxa kernel, I compiled the DT overlay source above (with the added status = "okay"; line in &spicc1) and had it to load with the extlinux config at the top of this thread. 0 Type C host; GPIO: 40Pin GPIO, ADC/UART/SPI/PWM; Others: Crypto Engine, support external antenna, one button; 18 Likes. Headless Mode. img, but not work still not work UART_AO_B and UART_EE_C not find in /dev/tty*. IMPORTANT!I noted on the video that radxa did reinforce the "usb boot" button, even then, I would extremely recommend this uart cable for serious tinkering w For Radxa products based on Rockchip chips, the default UART configuration is 1500000n8 without flow control. UART: x3; UART_AO_A (/dev/ttyAML0), UART_AO_B (/dev/ttyAML1), UART_EE_C (/dev/ttyAML4) Pin#22 (GPIOC_7) and Pin#36 (GPIOH_8) are open drain pins. The only UART interfaces visible are ttyS1 and ttyFIQ0 , but neither works for my setup. I confirm that I have problems with 921600 baud rate using UART. 2 or other? and Quectel EG915 by USB and UART. 40-Pin GPIO Header. I’m using the newest OS image (Debian XFCE B6). First, disable console and enable uart0 for uart test. Make sure the information shown is GX-CHIP, the USB ID is 1B8E:C003, select libusb-win32, and click Install Driver to install the driver. March 4, 2022 November 19, 2023 Armbian. Actually, even the default console at UART_AO_A does not seem to work. Processor. There’s probably libraries for that too. 6x. Access to the terminal via the serial software like putty or minicom. GPIO number Function5 Function4 UART Serial Console. The Radxa X2L integrates an Intel J4125 CPU and a RP2040 MCU, which communicate with each other via USB and UART. 3v signalling and peripheral options: - Up to 5 × UART - Up to 5 × I2C - Up to 5 × SPI - 1 × SDIO interface - 1 × DPI (Parallel RGB Display) - 1 × PCM Up to - 2× PWM channels - Up to 3× GPCLK outputs With outstanding processing speed and excellent energy efficiency, the Radxa ZERO 2 Pro aims to provide a more powerful and user-friendly platform for enthusiasts, developers, and geeks alike. mv meson-g12a-radxa-zero. 2021-07-11: IOhub is even more affordable with ROCK PI X hardware; 2021-06-16: Radxa Zero is released; 2021-04-15: ROCK PI S Based GPS NTP appliance is launched Radxa Zero is an ultra thin SBC in small form factor with powerful performance based on Amlogic S905Y2. Because now I see I have to buy a UART to USB connector cable for me to be able to erase the emmc. System Configuration. UART 串口控制台. 0 so I would need two cables, one to connect it to the host and one to power it? Update: Basically to do what I can do with this: PopStick™ - a USB Computer with the Zero 2 1 × SDIO 2. 3V power in; Crypto Engine; One button; Size: 66 x 30 mm; Build Quality. I have the same issue with Armbian 23. Hi, i have radxa zero and i want to use uart port to connect with 3D printer, i have followed the process to enable UART . GPIO. We are using the following GPIO pins for LED control: 490, GPIOA_14 491, GPIOA_15 412, GPIOAO_0 The problem is that in the first bootloader stage (pre U-Boot, SPL) is causing this LEDs to blink. 2 x ADC. Can you help to fix this behavior? Many Thanks. 0 x1/SDIO/UART, support WiFi 6 cards; 1x MIPI DSI, 1x MIPI CSI, compatible with ROCK Pi 4; 40P GPIO mostly compatible with ROCK Pi 4 I purchased a Radxa Zero 512mb specifically to test what the import tax would be as was thinking the great price on those SBC is absolutely killed by delivery cost and Connect the Radxa ZERO to your computer in Maskrom Mode. Get them from https://github. First of all thanks for the samples! I have made available the first EmuELEC test image for the Radxa Zero. Main; Getting Started; Radxa APT is the Debian package repository maintained by Radxa to provide ROCK Pi and Rockchip vendor specific package. Please note that the actual component layout and specifications may differ based on the selected Stock Keeping Unit (SKU). 3V DC power in: Others: One button for force USB boot or firmware upgrading: We are happy to announce the Radxa Zero, a new member of our SBC family. Not everything has been ported to it. The board is a radxa zero 1. com/Zero/dev/serial P. There are four uarts on radxa, and the position of them like the follow picture . In rsetup, I set the Enable UART2-M0 option to *. 1. I'm having trouble enabling UART_B on my Radxa Zero Ver 1. orig -o meson-g12a-radxa-zero. img. If you can boot to android, try "adb reboot fastboot" or (uart console) "reboot fastboot" If you can visit U-Boot console UART mraa-uart list: Lists UARTs on the system; mraa-uart dev dev_num baud customized_baud send str: send str to port dev_num; mraa-uart dev dev_num baud customized_baud recv 1000: receive 1000 bytes from port dev_num; mraa-uart usage example. 2: New USB device found, idVendor=0403, idProduct=6015, 1 x UART; 2 x SPI bus; 2 x I2C bus; 1 x PCM/I2S; 1 x SPDIF; 1 x PWM; 1 x ADC; 6 x GPIO; 2 x 5V DC power in; 2 x 3. Radxa X4's VCC, and the fan GND to Radxa pi@radxa-zero:~$ sudo lsmod | egrep ‘enc’ enc28j60 45056 0 pi@radxa-zero:~$ cat /boot/uEnv. dtb. 8v or 3. So that is not We will be reviewing the Zero 3W and plan to publish a project with your help. The ARM G31 MP2 GPU makes the S905Y2 fully Introduction to Radxa Zero Ubuntu. A dummy 9V or 12V power adapter with USB C tail will also work. Modifying the memory mapped hardware registers for a UART is simple to do from the command line, but the changes are overwritten when a program accesses said Radxa Zero 512MB/1GB Radxa Zero 2GB/4GB Radxa Zero2 Pro 4GB Processor 64bits quad core processor Amlogic S905Y2 2 x UART 2 x SPI bus 3 x I2C bus 1 x PCM/I2S 1 x SPDIF 2 x PWM 1 x ADC 6 x GPIO 2 x 5V DC power in 2 x 3. H. If you can boot to android, try "adb reboot fastboot" or (uart console) "reboot fastboot" If you can visit U-Boot console HOST), one USB3. The Radxa ZERO 2 PRO is a small form factor single board computer designed to be used in conjunction with other peripherals. What Does Community Support Mean? Community maintained So I’m brand new to the world of SBC. RKDevTool is a USB flashing UART Serial Console. Please refer to the UART Serial Console. 02. Notes: the Radxa Zero 2 > Hardware > GPIO General purpose input-output (GPIO) connector. Radxa ZERO as an example. Precision Interface overview. I was trying to do from the USB port used to power Radxa Zero. Application deployment. As to SPI and PWM I do not know. 412587] fiq_debugger fiq_debugger. Copy link Owner. As such this page will no longer be maintained and could contain out-of-date info, and its content should not be followed anymore. 0 loop txqueuelen 1000 (Local Loopback) RX packets 1442 bytes 161504 (157. orig. In Radxa Zero features a quad core 64-bit ARM processor, up to 4GB 32bit LPDDR4 memory, HDMI output at 4K@60, WiFi and BT connectivity, USB 3. ZERO. The download log contains the following information: Using the kernel-provided DT meson-uartC. The serial console guide https://wiki. Radxa First Boot Configuration, it will be copied into the correct location in the Linux root file system, the machine will use those settings to start up wireless networking. Select Serial at the bottom of the left column and configure The Radxa ZERO 2 PRO has a micro HDMI video output port on board, which requires a micro HDMI to standard HDMI cable to connect to the monitor. Linux kernel source tree. The CPU is a quad-core ARM Cortex-A53 processor. jack March 5, 2022, inet 127. Is there any way to swap this pin so that the In this guide, you can learn about the basic of Radxa Zero as well as how to prepare the board for basic use. **Tips: Actual compatibility is based on usage ** tip. On the booted system still no spidev file in /dev. 0 There are four uarts on radxa, and the position of them like the follow picture . 0 Type C OTG, one USB 3. 0 offers power but the actual host connection is through USB 3. UART LOG attached here, U-Boot 2021. Support OpenGL ES 1. Sample Code GPIO OUTDATED. @jack @RadxaYuntian @RadxaNaoki. 瑞莎的绝大多数产品将 GPIO 引脚上的第 8 (TX)、第 10 (RX) 引脚定义为 UART 串口通信接口，以方便排查系统早期启动阶段的问题。. However, on Odroid N2 the GPIO and PIN numbers are stirred and do not match docs. 0 with onboard or external antenna USB USB 3. GPIO number UART_AO_A_TX 412 GND 9 10 GPIOAO_1 UART_AO_A_RX 413 430 TDMC_DIN1 TDMC_D1 TSIN_B_SOP GPIOZ_3 11 12 GPIOA_1 TDMB_SCLK TDMB_SLV_SCLK 477 431 TDMC_DIN2 Hello, people! Where can I find a picture with the Radxa zero pinout? I am struggling to understand this official image, for me to find out which pins are that (which one is TX, RX and 5v/GND). I have changed /boot/uEnv. Radxa. This guide describes how to install Android to Radxa Zero eMMC. As such, Better energy efficiency. , would be appreciated. Login System The default UserName: radxa Password: radxa. Up to 8GB. 0 OTG port to connect more peripheral. Write radxa-zero in the Saved Sessions column and click Save. GPIO number Function4 Function3 Function2 Function1 Pin# Pin# Function1 Function2 Function3 Function4 GPIO number +3. 1_Radxa-zero_jammy_current_6. To have access to SPI_A, replace spicc1 with spicc0 in the overlay source file. Radxa Zero Ubuntu is an easy to use system. 0 port USB x 2 USB OTG USB HOST BOOT eMMC Nand Flash SPI Nor SPI Nand SDIO WIFI & BT LPDDR3/LPDDR4/DDR3/DDR4 Nand flash(8Bit) Radxa ZERO 2 Pro A2 Friday, May 17, 2024 4 13 1. Most of radxa's products define pins 8 (TX) and 10 (RX) on the GPIO pins as UART serial communication interfaces to make it easier to troubleshoot problems in the I think you need to use the latest Ubuntu/Debian image. I was My Zero 2GB would sometimes fails to boot up into kernel, but enters uboot. 042771] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: __cpufreq_driver_target+0x650/0x6b0 Radxa Zero is an ultra thin SBC in small form factor with powerful performance based on Amlogic S905Y2. BIOS Features. dtsi to rk3566-radxa-zero-3. Application upgrade_tool; Other System. C o n fi d e n t i a l f o r R a d x a 5 x UART, 1 x SPI, 2 x I2C, 1 x PCM/I2S, 6 x PWM, 28 x Digital IO: Power: and for radxa zero there is wifi 5 but for this new thing there is no such option even for the $46 one. Check the Radxa Zero Downloads. 0 Type-C OTG & Power combo port 1 x USB 3. I’m a software developer, worked on all the OS’s but I like code not all this technical stuff. How do I enable the /dev/tty* serial devices? I found documentation for the Radxa Zero but the UART section of the Rock5 Debian guide is empty. S: I’m using latest released ubuntu and usart test using rock@rockpis:~$ sudo mraa-uart dev 0 baud 1500000 send radxa and rock@rockpis:~$ sudo mraa-uart dev 0 baud 1500000 recv 1000 radxa works fine. 412684] fiq_debugger_probe: could not install nmi Radxa Zero > Installation > Boot troubleshooting. 441406Mhz, eg. Pictures: 40-PIN Usage Introduction to Intel N100 and RP2040 and 40-PIN GPIO Relationships . I suggest you don't use this uart. 0 Type-C HOST. The RP2040 exists as a USB memory device in the system, and the program can be burned by dragging and dropping the files to the USB device. The original content is kept for historical purpose. Sample Code GPIO Currently there are two types of Android image that can be flashed on Radxa Zero: Android OTA image, which is a zip archive with multiple smaller img files in it; and amlupdate image, which is just one big img file. if you want to use it ,you should unselect the FIQ DEBUG in kernel and remove the ttyFIQ in parameter. Stricted December 29, 2021, 8:43am #22 Radxa Zero 3W/3E. 5: October 23, 2024 Low frame rate ( Zero 3w and 8m 219) Zero Series. Can you tell me how I can disable the u-boot interrupt? theophile July 3, 2023, 2:10pm #4. 0: IRQ fiq not found [ 11. Check the ROCK 3 Downloads. M. bin to eMMC with following steps: Flash U-Boot to eMMC (ONLY FOR BRANCH 2021. 5mil and 115200 the console (pl2303 clone) works just fine on another board (rpi cm4) any hints ? Radxa Zero 3E Technical Specifications; SoC: Rockchip RK3566. Zipdox July 13, 2023, 11:23pm #2. edit the dts file, scroll down to led section and change the following. Thanks a 2021-10-11: Radxa Zero Debian/Ubuntu system images are released. Home; Products; News; Services; Documentation; Support . Radxa Zero comes in different configurations and hardware revisions. com/radxa/radxa-zero-images-released/releases/tag/radxa-zero-v20211027. Empower your projects with exceptional versatility and innovation as you discover both Radxa and third-party supported OS choices here. On this page. UART test. Description. Additionally, the power port can also be used as a USB 2. I have connected the device to the UART_AO_A pins (pins 8 and 10). If you want to use uart with Kernel > 5. from: gpios = <0x4f 0x08 0x00>; to : gpios = <0x4f 0x0a 0x00>; compile and reboot @kwisatz Hi , firstly I think you have done some excellent research in this thread , and it has inspired and equipped to implement the overlay for the Waveshare CAN hat onto the Radxa Zero . I do not know how to tell the system which GPIO pin on the 40-pin header should be used as IRQ line. @kwisatz Hi , firstly I think you have done some excellent research in this thread , and it has inspired and equipped to implement the overlay for the Waveshare CAN hat onto the Radxa Zero . 0 HOST X1, dedicated USB 3. Armbian 24. 1K 1L1 1uH_6A Using the System Without a Keyboard or Display. 51 I have a zero with no EMMC - I managed to flash a SDcard with the Ubuntu version from the official list. 5 Armbian_23. I guess the USB 2. Radxa X4 CPU communicating with the MCU RP2040 by obtaining the "pico/stdlib. Waldmeister. ZERO's SoC is the Amlogic S905Y2. decompile: dtc -I dtb -O dts meson-g12a-radxa-zero. My first try to boot new Radxa zero 512mB V1. SPI. I managed to get PWM from PWM_C (pin18) by exporting 0 on pwmchip4. img bs=100M count=1 oflag=dsync), the speed is only 10 MB/s. txt Radxa Zero 2 Pro features a hexa-core 64-bit ARM processor, 4GB 32bit LPDDR4 memory, HDMI output up to 4K60p, onboard Wi-Fi and BT connectivity, USB 3. img from radxa_zero_android_9_20211020-fastboot: does not flash at all I will resort to the USB UART to grab the log. 0 4-lane. Just show the code. WARNING! Flash bootloader incorrectly could result in 40-PIN Usage Introduction to Intel N100 and RP2040 and 40-PIN GPIO Relationships . Hi all! I am trying to make SPI devices work with my Radxa Zero using Ubuntu Focal. 7inch square Does Radxa Zero support connecting an external LTE Module via USB? For example, SIMCOM SIM8200EA-M2 5G with USB adapter Usb dongle SIMCOM SIM7600G-H EM06-E 4G LTE Cat6 M. The CAN hat employs Microchip MCP2515 , but its I2C_AO_S0_SDA UART_AO_B_RX I2C_AO_M0_SDA GPIOAO_3 7 8 GPIOAO_0 UART_AO_A_TXD GND 9 10 GPIOAO_1 UART_AO_A_RXD Radxa ZERO 2 Pro Product Brief Author: Radxa Computer (Shenzhen) Co. I enabled “overlays=meson-g12a-uart-ao-a-on-gpioao I'm having trouble enabling UART_B on my Radxa Zero Ver 1. 7 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 pi@radxa-zero:~$ uname -a If the resulting software would be something that could support both RPi, Radxa Zero and perhaps other S905-based SoC's, there's several possibilities on a SW architecture. img radxa-zero-ubuntu-focal-server-arm64-20221031-1222-mbr. I tried every UART pin available (8-9 ttyAML0, 7-11 ttyAML1, 23-24 Work with Radxa Zero Debian Introduction to Radxa Zero Debian. 4 S905Y2 Quick Reference Manual - The SoC datasheet of Radxa Zero S905Y2 TRM I2C/UART/IR/PWM/ADC part; Models and SKU; GPIO; Device Tree Overlays; Display; Audio; Camera module; Hardware revisions; Compliance CE RED - EU FCC ID - US IMPORTANT!I noted on the video that radxa did reinforce the "usb boot" button, even then, I would extremely recommend this uart cable for serious tinkering w For Radxa products based on Rockchip chips, the default UART configuration is 1500000n8 without flow control. Alternatively, you can install fastboot using nexus-tools by running the following command in PowerShell: AP mode(RR acts as wireless router) Below is how to manually configure wifi as AP mode on RR. 4 schematic pdf - Download Schematic of Radxa Zero v1. jack June 16, 2021, 8:48am #2. Radxa Zero 2. I realise the new image seems broken. Step 1:Set serial port configuration sudo su vim /boot/config. 10. I am using the 4GB version for this video but the 2GB should also work the same, 1GB might work but you may run Radxa Zero is an ultra thin SBC in small form factor with powerful performance based on Amlogic S905Y2. However, only UART2 M2, UART3 M1 and UART7 M1 seem to be working properly. com/Zero/dev/serial UART mraa-uart list: Lists UARTs on the system; mraa-uart dev dev_num baud customized_baud send str: send str to port dev_num; mraa-uart dev dev_num baud customized_baud recv 1000: receive 1000 bytes from port dev_num; mraa-uart usage example. 1. Radxa Zero 3W is relatively a new board and a different board from Zero. 1 netmask 255. 0 combo interface and multiple SDIO/SD card controllers, UART, I2C, high-speed SPI and PWMs. usbserial-2130 FAQs 1. ML improvements. Preparation Radxa product with GPIO, compatible power supply; PC; USB to TTL Serial Cable Radxa ZERO 3 provides a 40-pin GPIO header, which is compatible with most SBC accessories on the market. 3V 1R35 360K R2219 100K1% R329 0R C113 22uF_10V 1C21 1uF_6. April 26, 2024 May 9, 2024 Armbian. Quad-core Arm Cortex A55 CPU running at 1. Same question here! Is there a list of supported baud rate, for both UARTs on the GPIO? Joseph March 28, 2023, 4:31pm #3. Tried using “AS-IS” to keep the “get” command (GPIOD) from resetting my pin but to no avail. 7 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 1442 bytes 161504 (157. Supports Auto Power-On at Startup The processor has rich advanced network and peripheral interfaces, including, dual USB 2. Work with Radxa Zero Ubuntu Introduction to Radxa Zero Ubuntu. It currently just sets up the MMU and gets me to a main() I’m planing to attach a “Hat” board on-top the Zero, which needs the UART pins to communicate. The old image seems to work radxa-zero-ubuntu-focal-server Radxa Zero > Install > Install Android9 to eMMC (deprecated). UART AO Domain: UARTAO_A | UARTAO_B EE Domain: UART_A | UART_B | UART_C; GPIO Chips GPIO Names Basics Offsets Formulas; First: GPIOAO_x: 412: 0-11: Base + Offset: First: GPIOE_x: 424: 0-2: Base + Offset: Second: The Radxa ZERO has a micro HDMI video output port on board, which requires a micro HDMI to standard HDMI cable to connect to the I’m using Radxa Zero v1. com/Zero/dev/serial For driver we have sc16is7xx built as a module, and you can load with modprobe sc16is7xx. There are numbers which shouldn't exist at all and others exist which do not exist in docs: #5644 This seems to be correct on Radxa Zero? About the Radxa Zero, there is no problem with the pin Hello Friends! We are developing with a Radxa Zero v1. 2, OpenCL 2. 0 HOST JTAG I2C/SPI_B DDC/HPD/CEC UART_C ISO7816 UART_AO JTAG_A/TDMB CEC/I2C_AO PWM SDIO/PDM/TSIN_A PCM/TSIN_B/SPI_A UART_A I2C PWM SPDIF in/out Size Page Name: REV Date: Sheet of Radxa Zero C Block 1. Community Forum Wiki Github. SPECIFICATIONS CPU: Amlogic S905Y2 64bit quad core processor Quad Cortex-A53, 1. Installation of RKDevTool % brew install --build-from-source radxa/picocom/picocom Start picocom % picocom -b 1500000 -d 8 /dev/tty. Radxa Zero features a quad core 64-bit ARM processor, up to 4GB 32bit LPDDR4 memory, HDMI output at 4K@60, WiFi and Bluetooth connectivity, USB 3. In default, the uart2 is used as ttyFIQ0 for debug. 0 Type-C OTG x1 Key maskrom x1 reset x1 Ethernet 100MB ethernet, optional PoE(additional HAT requried) IO 26-pin expansion header I2C x4 PWM x3 SPI x2 UART x3 I2S0 x1 5V DC power in x2 3. dtsi - Rebase on latest mmind/for-next tree Changes in v5: - Rename regulator-fixed nodes - Add keep-power-in-suspend to sdmmc1 node I followed the instructions provided in the Radxa documentation. I have tried radxa-zero-ubuntu-focal-server-arm64-20220924-1144-mbr. radxa recommends using the Radxa Power PD30W. The problem is that it doesn’t want to boot unless I connect a USB<->UART converter. radxa-zero login: _ Shows me I’ve set it up according to UART Serial Console | Radxa Docs - tried both on win10 and ubuntu 22. bin and was able to sideload the binary and access the u-boot shell via ttyUSB/UART. PWM. However, after a reboot, the Radxa device fails to boot. But I still can’t get any signal from PWMAO_A (pin40) on pwmchip0 or 2? All right, that settles a few things, thank you ! I was able to load successfully the dtbo object made from the dts file you mention. It has quad-core power with up to 4GB LPDDR4 RAM that has similar dimensions to a USB stick. Without it, the green light just stays on forever. 0: IRQ wakeup not found [ 11. Zero - Introduction of the Radxa Zero hardware. There are numbers which shouldn't exist at all and others exist which do not exist in docs: #5644 This seems to be correct on Radxa Zero? About the Radxa Zero, there is no problem with the pin When the Zero is powered off, the UART_AO_A_TXD stays at v3. Select Serial at the bottom of the left column and configure it as follows: Hi, I have been using Radxa zero boards for a while. 19. Reference Documentation Install OS image to eMMC from USB OTG port mv meson-g12a-radxa-zero. 2 x UART 2 x SPI bus 3 x I2C bus 1 x PCM/I2S 1 x SPDIF 2 x PWM 1 x ADC 6 x GPIO 2 x 5V DC power in 2 x 3. ; Turn on the product and wait for login prompt. Radxa Zero 2 Pro comes with various configurations to suit your need. 16-meson64 With armbian-config under overlays= uartC is entered. 165-1-stable #179624a57 SMP PREEMPT Tue Jan 31 03:53:59 UTC 2023 aarch64 GNU/Linux pin #8 - UART_A0_A_TXD pin #10 - UART_A0_A_RXD I ran into an issue with the UART 921600 baud rate, transmitting and receiving data is corrupted. I’m running the latest Ubuntu server image from radxa. It doesn’t do anything else. 8 TOPs@INT8 performance. 265 decoder up to 4K@60fps. 51 to boot was not sucessful. txt like this: overlays=meson-g12a-uart-ao-a-on-gpioao-0-gpioao-1 meson-g12a-spi-spidev param_spidev_spi_bus=0 param_spidev_max_freq=10000000 But after reboot I cannot detect any SPI device both when using WaveShare E-Ink Display or rk3328-console-on-uart. One uart port cannot be used as common serial communication and serial console at the same time. While using debug console, there is system startup information on the screen, but the keyboard cannot be used to input text? Hi. Something seems How to install Android to Radxa Zero eMMC. 143-27-rockchip update bluetooth uart driver for ROCK Pi S board Connect both and boot with HDMI or UART connected. 0(rtl8723DS) external antenna USB USB2. Armbian. Radxa Zero 3W/3E. UART Serial Console. USB: One USB 2. Check out Network Settings for more useful information. 2 4 13 1C31 22uF_6. Hardware: x86_64 PC recommended inet 127. 6 GHz: 5 x UART, 1 x SPI, 2 x I2C, 1 x PCM/I2S, 6 x PWM, 28 x Digital IO: Power: FAN . But when I connect the converter, everything works fine. RKDevTool. August 23, 2020, 4:26am #9. Additionally, the power port can also be used for Radxa ZERO is an SBC developed by Radxa based on Amlogic S905Y2 with a form fator of 65mm x 30mm. next page → Zero/radxa-apt < Zero. 10 in ROCK Pi 4. Radxa CM3 is a Radxa Compute Module based on the RK3566 with a rich set of interfaces. 2 x UART Not Working on Radxa Zero 3E with Armbian OS. from: gpios = <0x4f 0x08 0x00>; to : gpios = <0x4f 0x0a 0x00>; compile and reboot Ok, to follow up. We have concentrated everything into this new place. 1 Like. 4. img Both of them keeps rebooting after successful image flash. bin Is it possible to configure the UART Control, Misc, and Reg5 registers in such a way that the changes will persist between uses of a given UART? I understand that power cycling will reset the registers. Radxa Zero provides 3 UART devices: uart0, uart1, and uart4. This guide describes how to build U-Boot and flash it on Radxa Zero. Radxa Zero Debian is an easy to use desktop system. 3 schematic pdf - My custom cirtuit has the uart connected to ST3232. 1 Compile hostapd wget http://dl. Sample Code GPIO UART Serial Console. 2 x 5V DC power pin. radxa-zero login: _ Shows me On the serial connection, when the board died I got this line (and this line only): [ 3558. v1. 0V 490 I2C_EE_M3_SDA RADXA Zero is an Amlogic S905Y2 64bit quad-core based Mini SBC in the same form factor as the Raspberry Pi Zero, but with much, much more power. 8G. I need it to be LOW when the Zero is powered off. bin and once the 'starting fastboot' message appears use 'fastboot reboot' and then use maskrom to push rz-udisk-loader. Dieser dürfte sich für unterschiedliche Projekte eignen - insbesondere dann, wenn es auf einen geringen Platzbedarf ankommt. The failure rate is like 1/20times. It is very easy to build your own U-Boot and Kernel using bsp. I plugged in a HDMI and I can see that’s booted and waiting for me to login. I even plugged the usb and the gpio pins to power it. Hi, I cannot get the UART_AO_B serial port appearing in /dev with the latest image radxa-zero-ubuntu-focal-server-arm64-20220801-0346-mbr. It seems that the RX pin has a pull-down resistor on it as the voltage is 0. Zero Series. I believe I already mentioned this - to use UART use pyserial, to use I2C use smbus2. 51 - UART 921,600 baud rate failed. I used around 9 images listed on the getting started page and 3 from dietpi . txt there’s “overlay_prefix=meson”, not sure what that With outstanding processing speed and excellent energy efficiency, the Radxa ZERO 2 Pro aims to provide a more powerful and user-friendly platform for enthusiasts, developers, and geeks alike. General purpose. h" #include "hardware/uart. 264/H. 51 board using "Armbian 23. However, I can’t seem to find the ttyAML0 interface. However, I boot the operating system from it and run the speed test (using if=/dev/zero of=/tmp/test1. 54mm header for gpio, i2c, uart, spi *For square base board, 3. Radxa Zero is an ultra thin SBC in small form factor with powerful performance based on Amlogic S905Y2. It's the same for radxa rock, radxa rock pro and radxa rock lite. It can run Android and selected Linux distributions. I’m planing to attach a “Hat” board on-top the Zero, which needs the UART pins to communicate. I’ve used a couple cases while tinkering with the Zero. Activates debug console on UART1 console pins (RXD, TXD): GPIO3_A6, GPIO3_A4 (Radxa Zero) meson-g12a-i2c-ao-m0-gpioao-2-gpioao-3 meson-g12a-i2c-ee-m1-gpioh-6-gpioh-7 meson-g12a-i2c-ee-m1-gpiox-10-gpiox-11 meson-g12a-i2c-ee-m3-gpioa-14-gpioa-15 Build U-Boot and flash it on Radxa Zero. Radxa OS. Connection . tip. Please check if your USB to TTL serial cable supports 1. for gmac1 - Add cap-mmc-highspeed prop to sdhci - Add sdmmc1 and uart1 nodes used for wifi/bt on 3W - Rename rk3566-radxa-zero3. Radxa Zero 2 has a 40-pin expansion header. 51 D2EH-T. Powered by Amlogic A311D SoC, it can run Android and selected Linux distributions. I2C. 11: October 22, 2024 I2S Microphone on Radxa Zero 3W. Skip to main content. I’ve just tried on windows as well so its not like I’m being a snowflake. 0 and PCIE 2. 3V DC power in: Others: One button for force USB boot or firmware upgrading: Radxa Zero 2. 🙂 Also - gpiod is purely for GPIO (binary read/write to/from lines) functionality. UART mraa-uart list: Lists UARTs on the system; mraa-uart dev dev_num baud customized_baud send str: send str to port dev_num; mraa-uart dev dev_num baud customized_baud recv 1000: receive 1000 bytes from port dev_num; mraa-uart usage example. Warning: 9V/12V USB C dummy power adapter is If you have a Radxa Zero with eMMC (any model with 2GB or 4GB of RAM), you'll need to erase the eMMC before you can boot it from a microSD card and use Armbian. I think they realised the uart might be handy and AO10 is PWMAO_D being PWM and maybe lesser to taking the uart pin. We will be reviewing the Zero 3W and plan to publish a project with your help. 3 x I2C bus. The ZERO 2 PRO power supply supports 5V, recommended to use a power adapter with a rated maximum current greater than 2A. After this, Radxa boots. Sample Code GPIO For Radxa products based on Rockchip chips, the default UART configuration is 1500000n8 without flow control. 3V DC power in x2 Others --- Power USB Type-C DC 5V Size 1. How fix that? UART_AO_B not working on armbian 系统必须官方github上的ubuntu或debian别的压根没有spi设备树插件没法用，懂? 好，现在跟着我烧录这个ubuntu系统就好了 20220701-0214版本的就行 20220701-0214 为什么不用官方推荐的最新20220801-0213版本？ 你可以试试，必定莫名奇妙死机，非睡眠省电问题，无法 Hello everyone, I’m using a Radxa Zero 3E with Armbian 24. The resolution of the HDMI output depends on the monitor, and the Radxa ZERO 2 PRO will adjust to the optimal display resolution according to the monitor. peteblank July 13, 2023, 10:17am #2. Take a look at the top view of Radxa ZERO 2 Pro is an SBC developed by Radxa based on Amlogic A311D with a form fator of 65 mm × 36 mm. 0/3. 7uF_6. 3. Additionally, the Radxa Zero is equipped I am struggling to get UART working on the Radxa Zero. 瑞莎的绝大多数产品将 GPIO 引脚上的第 8 (TX)、第 10 (RX) 引脚定义为 UART 串口通信接口，以方便排查系统早期启动阶段的问题。 在 Saved Sessions 列中写入 radxa-zero ，然后按 Save。 The images presented depict a particular configuration of the Radxa Zero. One uart port cannot be used as common serial communication and serial console at the Hi all. For Radxa products based on Rockchip chips, the default UART configuration is 1500000n8 without flow control. How can I configure Radxa Zero for using these ports? Javier_Vela June 2, 2022, 8:42am #2. This shows that using the card slot may have the limit with the write speed to UART mraa-uart list: Lists UARTs on the system; mraa-uart dev dev_num baud customized_baud send str: send str to port dev_num; mraa-uart dev dev_num baud customized_baud recv 1000: receive 1000 bytes from port dev_num; mraa-uart usage example. dts). It is equipped with the powerful Amlogic A311D processor as a development platform, providing users with excellent computing performance. Currently there are two types of Android image that can be flashed on Radxa Zero: Android OTA image, which is a zip archive with multiple smaller img files in it; and amlupdate image, which is just one big img file. On RaspberryPi this is achieved by setting the standard speed of 38400 together with “underclocking” the UART from 3MHz down to 2. 2021-08-25: ROCK 3A Debian/Ubuntu system images are released. Check also this Latest Ubuntu server image doesnt boot Hi trying to replace rpi3 with radxa zero sbc for logging power usage. 0 N/A Audio Codec 28 × GPIO supporting either 1. Sample Code GPIO So I started to look for alternative SBC's, and found the Radxa Zero which should be faster than a RPi Zero 2 and has the same form factor, except it's USB C instead of USB micro and HDMI micro instead of HDMI mini. com (namely radxa-zero-ubuntu-focal-server-arm64-20221001-0438-mbr. Hi all. Standard development environment utilizing GNU/GCC Android tool chain is supported. Preparation Radxa product with GPIO, compatible power supply; PC; USB to TTL Serial Cable 1 x UART; 2 x SPI bus; 2 x I2C bus; 1 x PCM/I2S; 1 x SPDIF; 1 x PWM; 1 x ADC; 6 x GPIO; 2 x 5V DC power in; 2 x 3. 0. 7 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 pi@radxa-zero:~$ uname -a I'm having trouble enabling UART_B on my Radxa Zero Ver 1. I’d like Hi all! I am trying to make SPI devices work with my Radxa Zero using Ubuntu Focal. 1 MB, Release date: Aug 26, 2024 Radxa Zero 2 Pro is a low profile single board computer with a small form factor. using the boot parameter init_uart_clock = 2441406 or an equivalent DTB overlay (midi-uart0. This article is not about rkdeveloptool (for Linux / macOS). UART. Each pin is distinguished by color. 412650] fiq_debugger fiq_debugger. Obviously, this requires a porting effort both for the software and for the PCB too, as it's not pin-compatible. 1/2. Sample Code GPIO bootloader. I’d like Radxa OS. Our Ubuntu image contains no desktop environment, makes it suitable to hosting simple home services How do one goes about interfacing with the GPIOs and the various serial pins on the Radxa Zero from a C/C++ program that is written and compiled on it? Hi Stephen, I finally UART Serial Console. dtb meson-g12a-radxa-zero. ZERO 3. Below is an example of how to build a U-Boot with bsp, using the . I followed the tutorial to get adb to recognize radxa zero on linux. My solution was to put a 10K pulldown resistor in RX, pin 10. bsp is a set of tools provided by Radxa to quickly build U-Boot Kernels. 1GB version is not supported. Using IR/optical coupler connected at usb port accessable by /dev/ttyUSB0 on OS. 3 x UART. STOP! This guide is quite messy with a lot of information duplicated from other guides. 3 x PWM. However, what you were talking about is to have device detected in the system. a Radxa ZERO 3W/E; UART mraa-uart list: Lists UARTs on the system; mraa-uart dev dev_num baud customized_baud send str: send str to port dev_num; mraa-uart dev dev_num baud customized_baud recv 1000: receive 1000 bytes from port dev_num; mraa-uart usage example. 2 M Key Connector with PCIe 3. :::. For anyone reading this, you can use the rsetup utility to disable the UART overlays. Prepare works. com/rock/source ROCK 3 > Development > Use the debug serial port as a normal serial port. 412684] fiq_debugger_probe: could not install nmi ZERO 2 PRO. - Connect BT 5. Fix bluetooth uart driver issue 4. txt file, hoping it would be picked up. ** For full base board, one 1000M ethernet via USB bridge, max speed 480Mbit/s Hi there, Could someone point me to the datasheet? The quick reference document is interesting, but barely usable to use the full power of the board (DMA PWM, anyone ?). UART Serial Console. 3. 7: October 21, 2024 Atheros AR9271 not working with zero 3w - diferent OS UART mraa-uart list: Lists UARTs on the system; mraa-uart dev dev_num baud customized_baud send str: send str to port dev_num; mraa-uart dev dev_num baud customized_baud recv 1000: receive 1000 bytes from port dev_num; mraa-uart usage example. 1 Bookworm Minimal / IOT Kernel: 6. User should use rsetup to enable UART overlay instead. Standard support. 5" hard drive is also supported with external power, both sata via USB bridge, max speed 480Mbit/s. Connect the fan's pwm pin to PIN_3, the fan VCC to . Support for Storage HOST Type-A Port; 10Gbps Data Transfer. They can be used to test SPI, UART, I2C, GPIO, and so on. 0 high-speed ports (one OTG and one HOST), one USB3. 265 encoder up to 1080P@60fps. 2: new full-speed USB device number 4 using dwc_otg usb 1-1. Sample Code GPIO bsp is a set of tools provided by Radxa to quickly build U-Boot Kernels. 3V 1 2 +5. 0 Type-A HOST x1 USB3. Take a look at the top view of ghost changed the title Radxa Zero | Fix I2C naming assignation & add missing overlay for alt I2C/UART interfaces Radxa Zero | Fix I2C bus assignation & add missing overlay for alt I2C/UART interfaces Apr 30, 2023. 0 9V/2A, 12V/2A compatible. Using the “Getting Started” info from Radxa, using a terminal program like Putty, a COM port, and USB breakout cable for Zero3W GPIO pins 6 (black GND), 8 (white UART TXD) & 10 (green UART RXD) and reboot It will have to become much less painful to steal a reasonable market share of the “Zero” business Hi, I have a need to hook up an external MAX3108 to SPI1 on the Radxa-Zero 40-pin header. The purpose of this paragraph is to provide the user with an example of the . 2 E key for connectivity with PCIe 2. August 2, 2022, 7:36pm #5. 3V 1R42 22. Radxa ZERO 2 PRO as an example. Powerful Multimedia Processing Capability. I’m having a weird issue. 04 but all I get is gibberish on all boot stages - tried both baudrates of 1. It won’t work. Get IP Address . Right now we need help getting through the unexpected snags like booting from eMMC, easily accessing the GPIO pins, proper Python and C++ add-ons, and understanding why I need a UART in my work. It seems like I need to modify the Linux boot parameters. Most of radxa's products define pins 8 (TX) and 10 (RX) on the GPIO pins as UART serial communication interfaces to make it easier to troubleshoot problems in the Technical specifications about the Radxa Zero hardware, including components datasheet, schematic, etc. 51 with Debian Linux pi@radxa-zero:$ uname -a Linux radxa-zero 5. Low level Development. Hardware: x86_64 PC recommended I’m planing to attach a “Hat” board on-top the Zero, which needs the UART pins to communicate. Instruction of how to fix 2 seconds delay at boot and not working reboot Zero Series. ; Ltd. h" #define UART_ID uart0 #define BAUD_RATE 115200 #define UART_TX_PIN 0 #define UART_RX_PIN 1 #define BLINK_PIN 29 int main Hi，the uart 2(pin 8,10) is enabled by default and only needs to be connected using a serial port with a baud rate of 1500000. I found the device tree binding file for the MAX3108 so I have an idea of what additions are needed for the MAX3108 but I don’t know how to deal with the interrupt routing in mv meson-g12a-radxa-zero. Its working for rpi3 but not for radxa zero 😦 rpi3 detects FT230X Basic UART usb 1-1. NPU: 0. 1 Bookworm OS and trying to connect a device to Radxa via UART. When Radxa is already running, everything works fine. Radxa didn’t boot. The board is actually pretty dense and has a little bit of weight to it. Contribute to torvalds/linux development by creating an account on GitHub. Download and install the Zagdig USB driver. Probably the output via UART is causing them to blink. 8. 0 HOST X2 Ethernet GbE LAN with Power over Ethernet (PoE) support additional HAT is required for powering from PoE IO 40-pin expansion header 2 x UART 2 x SPI bus 3 x I2C bus 1 Most of radxa's products define pins 8 (TX) and 10 (RX) on the GPIO pins as UART serial communication interfaces to make it easier to troubleshoot problems in the early startup phase of the system. You can try to set CONFIG_BOOTDELAY After set correct dtbo to use, reboot Radxa Zero for change to take effect. When I’m trying to flash u-boot. img), to make sure I have something people know of. Can you tell how to configure I2C for DS1307 on radxa zero things till now done 1> DS1307 is connected to I2C_EE_M3 port on Zero Using for work with Radxa Zero v1. You can now try some examples supplied by libmraa. The Radxa Zero is absolutely packed with components. 1/3. 0 channel, lower one USB 2. On Odroid N2 I can export and access GPIO pins via sysfs just fine. Documentation Technical support Hardware details SD writing tool Buy board Reporting bugs FAQs Armbian Team. 5M baud rate: Based on CP210X and PL2303x some products have baud rate limitations. 3 Friday, July 02, 2021 1 9 It seems so. 75, Size: 230. Most of radxa's products define pins 8 (TX) and 10 (RX) on the GPIO pins as UART serial communication interfaces to make it easier to troubleshoot problems in the early startup phase of the system. 2 Jammy" The idea is to connect a GPS, I had already done this with a Raspberry Pi Zero and it worked fine but I need more CPU capacity and that's why I switched to this board. You should see a file at /dev/spidev1,0 on the booted RZ, linking to SPI_B GPIO. 07-24129-g105a2deb65 (Dec 14 2021 - 14:20:39 +0800) radxa-zero Model: Radxa Zero SoC: Amlogic Meson G12A (S905Y2) Revision 28:c (30:2) DRAM: 2 GiB MMC: Install system on Radxa zero and Octoprint; Enable UART port to communicate with 3D printer; Solder Pin, plug onto 3D printer; Configure serial port settings in Octoprint; Done; I will cover each step in the following section, but I will first describe the issue that I solved with a hack mentioned at beginning. The content below is out of date. I even tried to prefix it with “meson-” to see if it made a difference (in uEnv. 0 1 x SDIO 3. 1，Vulkan 1. It will be simple when you can connect the SBC to your personal computer by serial port tool: Please refer to the UART Serial Console. 10: October 23, 2024 Radxa Zero 3 news. (UART or HDMI): Couldn't find partition mmc 2 A: Use maskrom to load u-boot. Full instructions are available on the Radxa wiki, but here are some quick notes. Sample Code GPIO BT 4. Additionally, when I go UART_AO PDM(8ch) SPI_A eMMC NAND flash SPI Nor SPI NAND USB OTG USB2. 2 x SPI bus. U-Boot image can be flashed on eMMC or microSD, and it can be sideload from USB as well. After power is applied, the process stops with the following messages (in UART Console): Starting kernel [ 11. Would something like I have problems to enable another UART, the truth is that with Radxa it is not as versatile as I expected. PinnedProblem May 3, 2023, 9:36am #2. ZERO 2 PRO. With preloaded xfce4 desktop environment, you will find it do well on playing music, browsing Internet, editing documents and so on. 1 x USB 2. txt overlays=meson-g12a-uart-ao-a-on-gpioao-0-gpioao-1 radxa-zero-i2s In the above I copy it to the same location as the uart dtb that is already stated in the uEnv. dtbo overlay fdt_overlay_apply() error: FDT_ERR_BADMAGIC base fdt has no node /__symbols__ Hi, I am trying to use secondary UART on the 5B. I have a Zero 3W, 2GB/16GB version. I have done this with the RPi and I have a little bit of experience working with ATmega MCUs (only dma-names and pinctrl-0) to: serial@feba0000 { compatible = "rockchip,rk3588-uart","snps,dw-apb-uart"; reg = <0x00 0xfeba0000 0x00 0x100>; The power adapter can be USB Type-C PD 2. 14. 01, DOES NOT WORK WITH ABOVE BUILD) <- Radxa Zero v1. This guide describes how to use the debug serial port as a normal serial port. Documentation Technical support Hardware details SD writing tool Sven Hirschauer. Minimal. Like I2C, you can turn them on separately. I had done something similiar for RockPi S , but AMlogic resources and examples are in short supply on the internet. This one fits reasonably well and has a little pop-out window for the GPIO headers, but the slot for the microSD card is located a little to high to accomodate the protruding microSD on the Radxa Zero (since it’s on the ‘bottom’ of the board and not the ‘top’), so you’ll either have to file it down a little or use the Der Radxa Zero 3E ist ein neuer und kompakter Einplatinenrechner. Seems fails to find mmc partitions. I found the datasheet of the S905 but I guess there In addition to Radxa's backing, we actively collaborate with third-party OS organizations, providing you with an extensive selection of options. ignore broadcom stuff in the 2nd link since zero uses different overlay; I have edited file and it look like this but I don’t know if it work I still have confusion /dts-v1/; /plugin/; / {compatible = “radxa,zero”, “amlogic,g12a”; So I’m brand new to the world of SBC. txt like this: overlays=meson-g12a-uart-ao-a-on-gpioao-0-gpioao-1 meson-g12a-spi-spidev param_spidev_spi_bus=0 param_spidev_max_freq=10000000 But after reboot I cannot detect any SPI device both when using WaveShare E-Ink Display or ROCK 3 > Development > Use the debug serial port as a normal serial port. Here are the key hardware specifications of the Radxa ZERO 2 Pro: up to 5 x UART; 1 x SPI bus; up to 2 x I2C bus; 1 x PCM/I2S; up to 6 x PWM; Aw man. Right now we need help getting through the unexpected snags like booting from eMMC, easily accessing the GPIO pins, proper Python and C++ add-ons, and understanding why PCM/UART_A Option Micro usb port USB 3. dts. Subject: Radxa ZERO 2 Pro Keywords: Amlogic, A311D, Radxa Created Date: 10/27/2023 4:51:32 PM UART mraa-uart list: Lists UARTs on the system; mraa-uart dev dev_num baud customized_baud send str: send str to port dev_num; mraa-uart dev dev_num baud customized_baud recv 1000: receive 1000 bytes from port dev_num; mraa-uart usage example. Accessories. 0 OTG X1, hardware switch for host/device switch, upper one USB 3. cser kck nsufvr kclc jml aajop arjwd wdqfz grolkh uauvcem