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martinayotte

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Posts posted by martinayotte

    Cubieboard 2 - GPIO with DHT22

    in Allwinner sunxi

    Posted

    Well ! you first need to figure out about pyA20 library, don't try the other libraries until you get the fist one done !

    On my OLIMEX board (I don't have any Cubieboard ...) both include coming from the same kernel tree, so they should have the same timestamp. If your are not the same timestamp, you have done ugly kernel updates ... Maybe a fresh images could help ! 

    root@micro:~# ll /usr/include/linux/i2c*
-rw-r--r-- 1 root root 2427 Jun 26 16:14 /usr/include/linux/i2c-dev.h
-rw-r--r-- 1 root root 6772 Jun 26 16:14 /usr/include/linux/i2c.h

     

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    Cubieboard 2 - GPIO with DHT22

    in Allwinner sunxi

    Posted

    CubieBoard2 is based on AllWinner A20 SoC, so it should work, although you maybe need to check/tweak the header pinout accordingly in pyA20/gpio/mapping.h, although the PD25 is already present.

    So, simply grab a ZIP snapshot, unzip it, and install it using "cd pyA20-master ; sudo python setup.py install" ...

     

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    Cubieboard 2 - GPIO with DHT22

    in Allwinner sunxi

    Posted

    Looking more deeply to the library, I found that it is a bit more complex than I thought to make it run on a A20 board.

    Doing a bit more search, I found out something easier :

    https://github.com/AiratNig/DHT22-DHT11_Orange-Pi_Python

    installed on top of the PyA20 library from :

    https://github.com/OLIMEX/OLINUXINO/tree/master/SOFTWARE/Python/pyA20/pyA20

     

    EDIT : I found also that one, again on top of pyA20 : https://github.com/ionutpi/DHT22-Python-library-Orange-PI

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    Cubieboard 2 - GPIO with DHT22

    in Allwinner sunxi

    Posted

    1 hour ago, B3RN0UT said:

    E.g for PD25 this would be ( 4 - 1) * 32 + 25 = 121 + 25 = 146 (since 'd' is the 4th letter).

    Nope ! it should be read as : 

    PD25 this would be ( 4 - 1) * 32 + 25 = 96 + 25 = 121

     

    1 hour ago, B3RN0UT said:

    I'm unsure what exactly is the mentioned Pin

    No, it is not header pin number but GPIO name

    0

    Recipe for enabling SPI on Pine64?

    in Pine A64

    Posted

    In Armbian Mainline, the SPI is enabled using an overlay. For that you need to add "overlays=spi-spidev" in /boot/armbianEnvt.txt and then reboot.

    For longsleep images, I think you need to enable the SPI simply by changing 'status="disalbed"' to 'status="okay"' in its DT.

     

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    OMV on Pine64+

    in Pine A64

    Posted

    The output you've posted earlier : 

     root@pine64:~# fdisk -l /dev/sda

Disk /dev/sda: 28.9 GiB, 31043616768 bytes, 60632064 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

    It seems incomplete since it doesn't show any partition ...

     

    With proper partitioning, it should look like : 

    root@pine64:~# fdisk -l /dev/sda
Disk /dev/sdb: 29.8 GiB, 32026656768 bytes, 62552064 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x000c3d6a

Device     Boot Start      End  Sectors  Size Id Type
/dev/sda1        2048 61926527 61922432 29.5G 83 Linux

     

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    OMV on Pine64+

    in Pine A64

    Posted

    The output of "fdisk -l /dev/sda" doesn't show any partition ...

    But strangely, the previous log mentioned you have /dev/sda1.

    Are you sure you provided the complete output of fdisk ?

     

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