Support for Raspberry Pi Zero W

[jjorosa]

Hi,

I'm afraid that maybe the Model/Revision for the rpi zero w isn't being handled correctly. I get this when I run sudo rpio --sysinfo:

Traceback (most recent call last): File "/usr/local/bin/rpio", line 4, in import('pkg_resources').run_script('RPIO==2.0.0-beta1', 'rpio') File "build/bdist.linux-armv7l/egg/pkg_resources.py", line 534, in run_script self.require(requires)[0].run_script(script_name, ns) File "build/bdist.linux-armv7l/egg/pkg_resources.py", line 1445, in run_script exec(script_code, namespace, namespace) File "/usr/local/lib/python2.7/dist-packages/RPIO-2.0.0_beta1-py2.7-linux-armv6l.egg/EGG-INFO/scripts/rpio", line 353, in

File "/usr/local/lib/python2.7/dist-packages/RPIO-2.0.0_beta1-py2.7-linux-armv6l.egg/EGG-INFO/scripts/rpio", line 346, in main

File "build/bdist.linux-armv6l/egg/RPIO/init.py", line 186, in sysinfo KeyError: '9000c1'

Indeed, the 9000c1 is the revision number for the raspberry pi zero w.

I guess it's easy to fix it, but I just can't figure what to move without opening the gates of hell.

Thanks in advance.

[JamesGKent]

because of this issue i ended up forking and patching so i could use on my own pi zero w my fork was taken from a v2 branch which had some other changes, not sure which version you were working with, but you could give it a try and see if it works for you (and let me know anything that doesn't) the fork is here: https://github.com/JamesGKent/RPIO/tree/v2

[Damel91]

@JamesGKent it work on my raspberry pi 0 w but, the installation was exiting with -1 because you have to add #include to cpuinfo.c. Anyway, thank you very much for creating your version, that actually maybe is the most updated version of the RPIO

[SrLeon]

Hi, I'm having problems with my raspberry zero w and RPIO too, I tried James RPIO and I made the Dave modification. Thanks to both, I'm little more close.

RPIO --version now works, but when i try to import RPIO i get this message:

`>>> import RPIO Traceback (most recent call last): File "<pyshell#1>", line 1, in import RPIO File "/usr/local/lib/python3.4/dist-packages/RPIO-0.10.1-py3.4-linux-armv6l.egg/RPIO/init.py", line 115, in import RPIO._GPIO as _GPIO ImportError: No module named 'RPIO._GPIO'

`

[Damel91]

Did you installed it using "sudo python3 setup.py install"? Or just for say, do you have gpio into your groups? Type "groups" in your raspberry, if you don't find gpio then you should add it. Or try this "sudo apt-get -y install python-rpi.gpio". Actually, I didn't wrote this library so I can't be very helpfull

[SrLeon]

Did you installed it using "sudo python3 setup.py install"?

Yes

Type "groups" in your raspberry, if you don't find gpio then you should add it

It is

Or try this "sudo apt-get -y install python-rpi.gpio"

Was already installed with the newest version

I opened the IDE thorny with sudo, and now it seems to read "import RPIO" but the execution stops in the first intruction "servo.set_servo(pin, pos)", I mean:

from RPIO import PWM
import time

start=1.3 #ms
inc=0.004
end=1.7
servo_pin=14

servo1=PWM.Servo()
servo1.set_servo(servo_pin, start*100)
print('Start')

for i in range(start,end,inc): #range((end-start)/inc):
    servo1.set_servo(servo_pin, i*inc+start)
    time.sleep(0.01)
    read_ultrasonic(trigger, echo)
    print ('cycle = ', i)

When I run this test, servo move to the start position, but i never see "Start" in console, seems the execution freeze in "set_servo"

Thanks for help me

[Damel91]

When I use the print command I put the words into double quotes, anyway analizing your code, you have a frequency of 50Hz as default, and you are giving him gpio 14 with a pulse of 130. Actually this is strange because the standard pulse range of servos is from 1000 to 2000, you haven't to worry about that, in my program for strange reason this range has changed two times. Another issue that I found was the problem that because the servo was requiring a certain current that caused a dangerous voltage drop that made my raspberry reboot, so then what happen to your rasperry when it doesn't run your program properly?

[SrLeon]

Thanks I forget a 0 and *1000 below and another punch of things... wow that was a big noob misstakes hahaha, thanks a lot. I was blinded with the problems with RPIO. Now all seems to work well. Although I keep having to run RPIO with sudo.

PD: My raspberry it's fine I was using a led to test the pwm before use a servo :D

[jjorosa]

Thanks to @JamesGKent, @Dave4675 and @VanBlood. Now is working like a charm!

[blueslevin]

Hi Everybody!

Thank you very much for this version of RPIO, it seems to be the only one working with Raspberry PI Zero W. However, I am experiencing a critical issue with DMA and PWM. My raspberry completely freeze after a random amount of second that I execute the following script from thonny (runned as sudo):

`from RPIO import PWM

PWM.setup() PWM.init_channel(0) PWM.add_channel_pulse(0, 17, 0, 50)`

With "freeze" I mean completely, I am not able to move the cursor. Still, the PWM continues to run on the selected pin even after the freeze.

Do you have any idea about what could create such a problem?

[DEvil0000]

As far as I remember there are some channels used by the OS and this may conflict. Not sure if this actually is true or the case here. Try using a different one.

Von meinem Samsung Gerät gesendet.

-------- Ursprüngliche Nachricht -------- Von: blueslevin notifications@github.com Datum: 03.11.2017 08:41 (GMT+01:00) An: metachris/RPIO RPIO@noreply.github.com Cc: Subscribed subscribed@noreply.github.com Betreff: Re: [metachris/RPIO] Support for Raspberry Pi Zero W (#96)

Hi Everybody! Thank you very much for this version of RPIO, it seems to be the only one working with Raspberry PI Zero W. However, I am experiencing a critical issue with DMA and PWM. My raspberry completely freeze after a random amount of second that I execute the following script from thonny (runned as sudo): `from RPIO import PWM PWM.setup()

PWM.init_channel(0)

PWM.add_channel_pulse(0, 17, 0, 50)` With "freeze" I mean completely, I am not able to move the cursor. Still, the PWM continues to run on the selected pin even after the freeze. Do you have any idea about what could create such a problem?

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[JamesGKent]

i found a similar issue using channel zero, i switched to channel 1 and it works flawlessly, never figured out the reason but as using channel 1 worked i never got around to investigating too deeply.

[blueslevin]

Thank you very much guys! I was using channel 0 as well. I'll give it a try with other channels. Thanks again!