Pymakr cannot connect after firmware upgrades

[Ralph]

Hi @rogierb
Thanks for all the info. With the right serial port set in the configuration, and the boot.py file setup like you have, Pymakr should be able to connect over serial port. Is there any other code in boot.py or main.py that can potentially crash the WiPy?

About the first point you mention, where Pymakr doesn't perform the update: This feature is not implemented in Pymakr yet. It's planned for the next release. Sorry for this instructions to be incorrect, we are working on improving the getting started pages as we speak.

[rogierb]

I can telnet into the WiPy2.0, so it is not crashing. I can also connect through FTP.
Connecting from Pymakr through USBSerial or wifi is not possible.

So connecting to the WiPy is not the issue, Pymakr has the issue.

[livius]

The bug is confirmed by abilio
We must wait for fix

But in the mentime you can try setting in pymark device as 192.168.4.1 not as COMX

[Frida]

On Linux Mint18 I have updated my Lopy and Wipy2.0 with the update tool.

On my GtkTerm it shows:

>>> os.uname()
(sysname='LoPy', nodename='LoPy', release='0.9.2.b1', version='333b92c on 2016-10-26', machine='LoPy with ESP32')
>>>

and

>>> os.uname()
(sysname='WiPy', nodename='WiPy', release='0.9.2.b1', version='333b92c on 2016-10-26', machine='WiPy with ESP32')
>>> 

With Pymakr version 1.0.0.b5 both are able to communicate via net on 192.168.4.1, but only the Lopy can communicate via /dev/ttyUSB0, the Wipy2.0 shows only

Error while communicating with the Pycom device! (click to attempt to reconnect)
Connecting to a Pycom device...
Error while communicating with the Pycom device! (click to attempt to reconnect)

[jonirons]

Confirm I'm having the same problem with Pymakr and wipy1.
Have set up boot.py to connect to my wlan
Can connect to board using telnet.
Can update using FTP

Can't connect using Pymakr

I get a popup error dialog with the message:
Warning:
QStackedWidget::setCurrentWidget: widget 0x7fe1ccddc0d0 not contained in stack

Behind the error popup is:
Connecting to a Pycom device...
Error while communicating with the Pycom device! (click to attempt to reconnect)

I'm not sure what to click, but if you go to preferences -> Pycom Device -> Ok
I get the Error while communicating message again.

[stevePy]

Hi,

I have successfully installed the 0.9.3.b2 firmware onto my WiPy 2.0 and I can connect via Telnet, FTP (FileZilla) and via Tera Term + REPL using the USB virtual UART. Using FileZilla, I have confirmed that my boot.py contains:-

import os
from machine import UART
uart = UART(0, 115200)
os.dupterm(uart)

and using Tera Term + REPL with:-

import os
os.name()

I have confirmed that the WiPy responds with 0.9.3.b2

I have installed PyMakr version 1.0.0.b6 onto my Windows 10 pc (same as used for the above) and my WiPy is connected both via WiFi and via the USB serial - as tested and proven to work, above.

When I try to connect using either the serial (with the correct COM port, as proven via Tera Term + REPL), or via the IP settings (as proven via Telnet and FTP) and the correct micro/python auth, I get the following error message:-

"Error while communicating with the Pycom device! (click to attempt to reconnect)"

This issue appears to be connected with the appearance of the PyMakr error message shown below.

I also occasionally get a message which looks something like: QStackedWidget::setCurrentWidget: widget 0x???????????? not contained in stack

Regards Steve

---

2016-11-09, 10:30:20

<type 'exceptions.TypeError'>:
'NoneType' object has no attribute 'getitem'

File "C:\Program Files (x86)\Pycom\Pymakr\Pymakr\Plugins\PluginPycomDevice.py", line 90, in __onWindowLoad
self.__ui.showEvent(event)
File "C:\Program Files (x86)\Pycom\Pymakr\Pymakr\Plugins\PluginLiteUI.py", line 75, in __windowLoaded
self.__setupToolbars()
File "C:\Program Files (x86)\Pycom\Pymakr\Pymakr\Plugins\PluginLiteUI.py", line 197, in __setupToolbars
self.__initLiteToolbar(self.__ui, self.__toolbars)
File "C:\Program Files (x86)\Pycom\Pymakr\Pymakr\Plugins\PluginLiteUI.py", line 183, in __initLiteToolbar
for el in self.__ui.getToolbar(bar[0])[1].actions():

---

Version Numbers:
Python 2.7.12
Qt 4.8.7
PyQt 4.11.4
sip 4.16.8
QScintilla 2.9
WebKit 534.34
Pymakr 1.0.0.b6

Platform: win32
2.7.12 (v2.7.12:d33e0cf91556, Jun 27 2016, 15:19:22) [MSC v.1500 32 bit (Intel)]

Plugins Version Numbers:
PluginAbout 6.1.0
PluginAboutPymakr 1.0.0
PluginCodeStyleChecker 6.1.0
PluginCompletionJedi 1.0.3
PluginEricapi 6.1.0
PluginEricdoc 6.1.0
PluginFeedback 1.0.0
PluginFullUI 1.0.0
PluginLiteUI 1.0.0
PluginPycomDevice 1.0.0
PluginPycomStyle 1.0.0
PluginPycomSync 1.0.0
PluginREPL 1.0.0
PluginSyntaxChecker 6.1.0
PluginTabnanny 6.1.0
PluginUpdate 1.0.0
PluginVcsMercurial 6.1.0
PluginVcsPySvn 6.1.0
PluginVcsSubversion 6.1.0
PluginVmListspace 6.1.0
PluginVmTabview 6.1.0
PluginWizardE5MessageBox 6.1.0
PluginWizardPyRegExp 6.1.0
PluginWizardQColorDialog 6.1.0
PluginWizardQFileDialog 6.1.0
PluginWizardQFontDialog 6.1.0
PluginWizardQInputDialog 6.1.0
PluginWizardQMessageBox 6.1.0
PluginWizardQRegExp 6.1.0
PluginWizardQRegularExpression 6.1.0

[livius]

same as you. can not connect to wipy2 by pymakr. I pause my work with wipy for 1 month and back to see if all my problems are gone.
Too much time waisted

[Ralph]

@stevePy Thanks for the stacktrace and other information, I've seen that error once before and will definitely look into that. Same for the QStackedWidget error.

[hugo]

While Rogierb seems to have fixed his problem mine is still there...
Pymakr 1.0.0.b6
Wipy 1.0 with v1.8.2.

Cannot connect using serial connection

EDIT: after I sorted out my permissions to /dev/ttyUSB0
I get the same error as below

QStackedWidget::setCurrentWidget: widget 0x3a38abc not contained in stack

hugo

[Ralph]

@hugo We are working on the QStackedWidget error, which will be solved in the next release.

[dg66]

I can confirm that i'm unable to connect via serial with pymaker. I am able to use screen to connect so it is not a wipy related problem (like code crashing). I'm using pymakr 1.0.0b6 under ubuntu 16.04 on a brand new wipy2 with the latest firmware and no additional code. Connecting with rshell also work fine. Pymakr is configured to connect through the correct serial (/dev/ttyUSB0)

[Ralph]

Hi @dg66, Assuming you do have the REPL code enabled in your boot.py and do not have any other connections open to the board while trying to connect from Pymakr, I suggest you first try the latest firmware release from yesterday evening which has some stability improvements: https://www.pycom.io/support/supportdownloads/.

Let me know if that helps, otherwise we'll go into more detail to debug your issue.

[Ralph]

@jonirons
One thing that could be going wrong, is the wifi code in your boot.py file. Pymakr does a soft reset when connecting, so you need this check just above your wifi code (see example):

if machine.reset_cause() != machine.SOFT_RESET:

This prevents your wifi connection to be reset when you connect using pymakr.

Let me know if that helps with your issue.

[livius]

Pymakr can not connect to WiPy2 with newest firmware also.

i got message

pymakr - Error getting versions information
---------------------------
The versions information could not be downloaded for the last 7 days. Please go online and try again.
---------------------------
OK   
---------------------------

and trying to connect by pymakr

Error while communicating with the Pycom device! (click to attempt to reconnect)
Connecting to a Pycom device...

and strange it now restart my device
tested on Windows 10

[jonirons]

@Ralph Yes - I tried that.
The loop waiting for "not wlan.isconnected() caused a watchdog timeout (took 8 seconds to finish) and watchdog timer HALTED the machine (I've posted this issue on this forum). The only way out was to wipe the flash. I then removed that code from boot.py, and put it in a sample.py file, and discovered that watchdog feeding is not available (also posted somewhere on the forum).

The difference between my code and the example is the use of 'dhcp'. I've also posted somewhere or other that dhcp on WiPy2 takes 10 seconds, whereas on WiPy 1 it takes a bit under 2 seconds.

If 'dhcp' is not yet properly supported this would be useful to know, as would watchdog feeding, no support for RTC etc.

We really do need to know what is working, what isn't, and when it might be fixed.

More particularly those who haven't bought a device yet need to be advised that the software doesn't yet support all features.

if machine.reset_cause() != machine.SOFT_RESET:
wlan.init(WLAN.STA)
# configuration below MUST match your home router settings!!
wlan.ifconfig(config=('192.168.178.107', '255.255.255.0', '192.168.178.1', '8.8.8.8'))

if not wlan.isconnected():
# change the line below to match your network ssid, security and password
wlan.connect('mywifi', auth=(WLAN.WPA2, 'mywifikey'), timeout=5000)
while not wlan.isconnected():
machine.idle() # save power while waiting

[PatSenn]

@jonirons @Ralph
Maybe I am just to new to this system, but I am having problems locating boot.py. I searched the folders that I could and found nothing. How do I view the '/flash' folder?

[Ralph]

@livius thanks for notifying this, l'll check if our update system is causing this version information error.

I'm also still unable to connect Pymakr with the latest firmware version. This issue is probably the cause of this, perhaps somehow also involved in preventing connection over serial. We'll be working on a fix for this very soon.

[Ralph]

@jonirons said in Pymakr cannot connect after firmware upgrades:

We really do need to know what is working, what isn't, and when it might be fixed.

I completely agree with you and we are working on improving this. Step one is making more use of the new repo's on github for tracking issues.

My colleagues will take care of your watchdog questions in those topics, since that's not my field of expertise.

[Ralph]

@PatSenn
You can indeed find the boot.py and main.py files in the /flash folder. Use FTP to download them to a folder on your pc. After this, you can go to Pymakr, create a new project for this folder and start coding and syncing code to the device from there. You can also skip the FTP download part and create new boot and main files from Pymakr.
Let me know if this helps you to get started.

[dg66]

@Ralph thx for the answer. I will give it a try tomorrow.