Acasă Explorează Ajutor
Autentificare
patb
/
i96
1
0
Bifurcare 0
Fisiere Probleme 0 Trageți solicitările 0 Wiki
Pagina: Appendix
Appendix
GPIO
Home
I2C_Speed
OPIO
Operating_System
Useful_Info
Appendix
Pat Beirne a editat această pagină 3 ani în urmă

Appendix: Linux driver numbering

Special function mode:

RDA device name i96 Bus Name Linux device name
uart1 UART0 /dev/ttyS1
uart2 UART1 /dev/ttyS2
uart3 n/a /dev/ttyS0 (debug terminal; not on i96 bus)
i2c1 n/a /sys/class/i2c/i2c-0 (link to modem chip; not on i96 bus)
i2c2 I2C0 /sys/class/i2c/i2c-1
i2c3 I2C1 /sys/class/i2c/i2c-2
spi2 SPI0 /sys/class/spi_master TODO: verify
i2s2 PCM /sys/class/pcm/pcm-1 TODO: verify
Appendix: GPIO misc info:
RDA gpio driver group IOMUX address Linux gpio device numbers
Group C 0x11a0.9008 gpio96-gpio127
Group A 0x11a0.900c gpio0-gpio31
Group B 0x11a0.9010 gpio32-gpio63
Group D 0x11a0.9014 gpio64-gpio68 (there are only 5 pins)

Write a '1' into the IOMUX register to set a bit to GPIO mode. Write a '0' to set the same bit to 'special function' See this

The actual gpio direction and value registers are at 0x2093.0000(group a), 0x2093.1000(group b), 0x2093.2000(group d) and 0x11a08000(group c) address + 0 = "data direction register 0=output"

+ 4 set for "dir = out"  
+ 8 set for "dir = in"  
+ c for "value read/write"  
+ 10 set for "write 1"  
+ 14 set for "write 0"  
+ 18 gpio interrupt control reg

Resources on the net:

Problems not addressed in this doc

  • 2G modem

  • camera interface

  • LCD interface

  • booting from NAND

  • changing the WiFi into an AP (access point)

  • some people had problems with specific makes of sdcards (trans-flash)

    • (personally, I've never had a problem)

Things to do on a fresh install

  • login orangepi/orangepi

  • sudo -i

  • edit /etc/update-motd.d/100-fs-warning (change last escape sequence to \033[0m)

  • dpkg -r alsa-utils libasound2 or simply rm /usr/sbin/alsactl

  • run orangepi-config

    • set up wifi device
    • give your device a new hostname

  • reboot

  • set your timezone :

    • rm /etc/localtime
    • ln -s /usr/share/zoneinfo/America/Toronto /etc/localtime

  • optional

    • add new user: adduser <username>
      • give that user sudo powers: usermod -a -G sudo <username>
    • replace the wifi driver so that your MAC address doesn't change
      • replace rdawfmac.ko in /lib/modules/3.10.62-rel5.0.2+/kernel/drivers/net/wireless/rdaw80211/rdawlan/

  • update your system: apt update && apt upgrade

NOTE there are some wifi hotspots that refuse to DHCP/DHCLIENT but others are fine.....why?

NOTE if you go to compile the source for uboot & kernel, you'll need to load the 32bit versions of the libstdc++6 libraries

OrangePi 2G-IOT

The 2G-IOT version of this board includes a GSM tranceiver and an audio subsystem. Otherwise it is very similar to the i96 board and most of the above notes apply.

The 2G-IOT board does not have the 3 green LEDS, but it does have a single red LED which can be controlled by

  cd /sys/class/leds/red-flash
  echo 0 > brightness
  echo 255 > brightness

NOTE: The i2c-0 device is connected to pins 3/5 (I2C1_SDA/I2C1_SCL) on the 2Giot pin connector. It is NOT recommended to use this bus, because it is also connected to the modem chip, and is used for chip-to-chip communication. For the same reason, do not use opio to modify the operation of these pins.

Șterge pagina

Aceasta va șterge pagina "Appendix". Vă rugăm să fiți sigur.

Nu
Da