Kwan Xian

SOLVED： Because PC2 GPIO pins is different. change SPI0 to SPI1 edit /boot/armbianEvn.txt "param_spidev_spi_bus=0" --> "param_spidev_spi_bus=1" save!

HI, guys! I tried to enable spi connect RC522 on OPi_PC(H3). It works! my topic: but now, I make the same way to enable spi with RC522 on OPi_PC2(H5). I can found spi on "/dev/spidev0.0" But when I run "Read.py" script as root. It can't detect & read the cards. How can i use it on OPi_PC2?

Requirements: https://github.com/lthiery/SPI-Py https://github.com/mxgxw/MFRC522-python (for Raspberry Pi) https://github.com/kwanxian/OrangePiPC/tree/master/SPI/RC522 (for Orange Pi PC) sudo armbian-config System --> Hardware --> select "spi-spidev" --> Confirm --> reboot when reboot finish: sudo vim /boot/armbianEnv.txt under "overlays=spi-spidev",add this: "param_spidev_spi_bus=0" save & reboot again. then you can see spi enable in "/dev/spidev0.0". cd ./SPI_Python sudo python3 setup.py install cd ../RC522 sudo python3 Read.py you can test IC card like this: Welcome to the MFRC522 data read example Press Ctrl-C to stop. Card detected Card read UID: 53,101,232,169 Size: 8 Sector 8 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Card detected Card read UID: 53,101,232,169 Size: 8 Sector 8 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]

Yes,You'r right. cp /usr/bin/python3 to /usr/bin/my-python and chmod 4775 /usr/bin/my-python. config "my-python {script-path}" for startup command. Now,my py script can run when device reboot. Thank You!

Hi,guys! when I build a pthon3 script with gui and GPIO contorl.I can run it when I use terminal with sudo command. But when I used "settings->session and startup" to config this script,It can't run when my device reboot (Orange Pi PC). I try to config command like: "echo 'password'|sudo -S python3 /home/kwan/OPi_PC/u_main.py" still the same. And then I tried to edit "/etc/rc.local" file and add: "echo 'password'|sudo -S python3 /home/kwan/OPi_PC/u_main.py &" still the same. The problem is when I run the other script without GPIO config and sudo command. It can run when device reboot. So,It's there anybody can tell me why & how to make it run with sudo. I really have no idea about it. Thx! tried: @reboot sudo python3 /home/kwan/OPI_PCPLUS/Linux_gate.py > /home/kwan/log.log Error: no display name and no $DISPLAY environment variable

solved. with python3 tkinter. Tk().config(cursor='none')

Hi, I have an orange_pi_pc installed Armbian(Debian) and enable desktop. But I want to hide mouse cursor when it start. I find "Mouse and Touchpad" setting,but I can't set mouse Default Theme. Is there someone know how to hide mouse cursor on it?

Thank you sooooo much! That's verrrrrry help for me.

Is't the same way to enable SPI0?

Thank you! It works. I need to check my code between windows & Linux.

Hello guys! I'm beginner of Armbian. The problem is: Install Armbian Stretch mainline kernel 4.14.y on my device(Orange_Pi_PC),But I don't know how to enable UART1 . I tried to select UART1 & UART2 & UART3 on armbian-config,now i can see 'overlays=uart1 uart2 uart3' in /boot/armbianEnv.txt Connect serial device with P40(RX) P39(GND) P38(TX) . when i check serial device on ssh, i can see this info: uname -a Linux orangepipc 4.14.84-sunxi #3 SMP Sat Dec 1 07:18:41 CET 2018 armv7l GNU/Linux ls -l /dev/ttyS* crw--w---- 1 root tty 4, 64 Dec 4 20:24 /dev/ttyS0 crw-rw---- 1 root dialout 4, 65 Dec 4 20:36 /dev/ttyS1 crw-rw---- 1 root dialout 4, 66 Dec 4 21:08 /dev/ttyS2 crw-rw---- 1 root dialout 4, 67 Dec 4 20:33 /dev/ttyS3 crw-rw---- 1 root dialout 4, 68 Dec 4 20:24 /dev/ttyS4 crw-rw---- 1 root dialout 4, 69 Dec 4 20:24 /dev/ttyS5 crw-rw---- 1 root dialout 4, 70 Dec 4 20:24 /dev/ttyS6 crw-rw---- 1 root dialout 4, 71 Dec 4 20:24 /dev/ttyS7 dmesg | grep tty [ 0.000000] Kernel command line: root=UUID=3d863bb3-b616-4229-94e7-8c92ac95501a rootwait rootfstype=ext4 console=tty1 console=ttyS0,115200 hdmi.audio=EDID:0 disp.screen0_output_mode=1920x1080p60 panic=10 consoleblank=0 loglevel=1 ubootpart=c0dd9a77-01 ubootsource=mmc usb-storage.quirks=0x2537:0x1066:u,0x2537:0x1068:u sunxi_ve_mem_reserve=0 sunxi_g2d_mem_reserve=0 sunxi_fb_mem_reserve=16 cgroup_enable=memory swapaccount=1 [ 0.000198] console [tty1] enabled [ 1.796248] console [ttyS0] disabled [ 1.816398] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 42, base_baud = 1500000) is a U6_16550A [ 1.816450] console [ttyS0] enabled [ 1.839525] 1c28400.serial: ttyS1 at MMIO 0x1c28400 (irq = 43, base_baud = 1500000) is a U6_16550A [ 1.862474] 1c28800.serial: ttyS2 at MMIO 0x1c28800 (irq = 44, base_baud = 1500000) is a U6_16550A [ 1.885408] 1c28c00.serial: ttyS3 at MMIO 0x1c28c00 (irq = 45, base_baud = 1500000) is a U6_16550A [ 4.746240] systemd[1]: Created slice system-getty.slice. setserial -g /dev/ttyS* /dev/ttyS0: Permission denied /dev/ttyS1, UART: undefined, Port: 0x0000, IRQ: 43 /dev/ttyS2, UART: undefined, Port: 0x0000, IRQ: 44 /dev/ttyS3, UART: undefined, Port: 0x0000, IRQ: 45 /dev/ttyS4, UART: unknown, Port: 0x0000, IRQ: 0 /dev/ttyS5, UART: unknown, Port: 0x0000, IRQ: 0 /dev/ttyS6, UART: unknown, Port: 0x0000, IRQ: 0 /dev/ttyS7, UART: unknown, Port: 0x0000, IRQ: 0 When I saw this doc: https://docs.armbian.com/Hardware_Allwinner/ but there is no bin file in /boot: ls /boot armbianEnv.txt boot.scr initrd.img-4.14.84-sunxi vmlinuz-4.14.84-sunxi armbian_first_run.txt.template config-4.14.84-sunxi overlay-user zImage boot.bmp dtb System.map-4.14.84-sunxi boot.cmd dtb-4.14.84-sunxi uInitrd boot-desktop.png dtb.old uInitrd-4.14.84-sunxi I tried to use UART1 with Python3: #!/usr/bin/python #-*-coding:utf-8-*- import serial my_printer = serial.Serial('/dev/ttyS1',9600,timeout=1) if my_printer.isOpen(): pass else: my_printer.open() my_printer.write(b'\x1b\x40\x12\x54') but it doesn't work. BTW: serial device can work on Windows.