Hi,
I Have T2-oLinuXino-LIME-e8Gs16M-IND board. I need to install Debian Jessie on it. How can I download the image? I have downloaded Torrent of official Debian Jessie release #9, as explained on https://www.olimex.com/wiki/A20-OLinuXino-LIME#Linux_images but I'm not able to download it. There is another method to got it?
Thank you
You can find older images for direct download at our FTP:
ftp://staging.olimex.com/Allwinner_Images/A20-OLinuXino-LIME/Debian/sd/
But why do you need that specific image? There are newer images recommended images, Olimage images here:
http://images.olimex.com/release/a20/
and information about Olimage here:
https://olimex.wordpress.com/2020/04/21/olimage-mainline-linux-images-building-script-for-all-of-our-olinuxino-and-som-boards/
Thank you. I downloaded image and installed it on emmc.
I have another question. How can I export gpio pi16 and pi17. This is what I exported:
ls /sys/class/gpio/
export gpio1_pg0 gpio2_pg1 gpio3_pg2 gpio4_pg3 gpio5_pg4
gpio10_pg9 gpio20_ph11 gpio30_ph23 gpio40_pb10 gpio50_pi2 gpio60_pi14
gpio11_pc7 gpio21_ph14 gpio31_ph24 gpio41_pb11 gpio51_pi3 gpio61_pi15
gpio12_pc17 gpio22_ph15 gpio32_ph25 gpio42_pb12 gpio52_pi4 gpio6_pg5
gpio13_pc18 gpio23_ph16 gpio33_ph26 gpio43_pb13 gpio53_pi5 gpio7_pg6
gpio14_pc23 gpio24_ph17 gpio34_ph27 gpio44_pb14 gpio54_pi6 gpio8_pg7
gpio15_pc24 gpio25_ph18 gpio35_pb3 gpio45_pb15 gpio55_pi7 gpio9_pg8
gpio16_ph0 gpio26_ph19 gpio36_pb4 gpio46_pb16 gpio56_pi8 gpiochip1
gpio17_ph2 gpio27_ph20 gpio37_pb5 gpio47_pb17 gpio57_pi9 unexport
gpio18_ph9 gpio28_ph21 gpio38_pb6 gpio48_pi0 gpio58_pi10
gpio19_ph10 gpio29_ph22 gpio39_pb7 gpio49_pi1 gpio59_pi11
I can't exoprt pi16 and pi17:
echo 62 > /sys/class/gpio/export
bash: echo: write error: Invalid argument
Your calculations are incorrect. Read chapter "Accessing the GPIO pins through sysfs with mainline kernel" to find how to calculate GPIO number here:
https://linux-sunxi.org/GPIO#Accessing_the_GPIO_pins_through_sysfs_with_mainline_kernel
(position of letter in alphabet - 1) * 32 + pin number
PI16 is 272 and PI17 is 273.
There is something wrong because if I export that number it still gives me an error. The calculation of the GPIO number does not coincide with the exported numbers and with the pin number. Why, for example the pi15 is exported with the number 61?
P.S. I am using kernel 3.4.103
PI16 and PI17 are routed to the SD card at the back, maybe they are defined in the fex for that function and unavailable as GPIO. This is the excerpt:
(https://i.imgur.com/gAO9kmg.jpg)
In older sunxi images (as 3.4.103) you should first edit pins as GPIO pins in the script fex bin before being able to export them. Make sure they are cleared of other functions. You also need to pay attention to hte schematic so you don't accidentally disable important peripherals.
Refer to to these:
https://www.olimex.com/wiki/How_to_edit_board_configurations_and_definitions_in_the_official_Debian_Linux
https://linux-sunxi.org/Fex_Guide
Thank you. I solved as you suggested :D