My code in esp8266/scrips/main.py is not working..

[Vasili]

Hi guys,
I have added simpe lines of code from tutorial but it's not working on boot.
Can somebody explain me why ?

Here is the code:
[code]
import pyb
import time

pin = pyb.Pin(2, pyb.Pin.OUT)
for i in range(4):
pin.value(0)
time.sleep(1)
pin.value(1)
time.sleep(1)
[/code]

However this works in python shell.

Thanks !

[wendlers]

Hi guys,
I have added simpe lines of code from tutorial but it's not working on boot.
Can somebody explain me why ?

Here is the code:
<

import pyb
import time

pin = pyb.Pin(2, pyb.Pin.OUT)
for i in range(4):
pin.value(0)
time.sleep(1)
pin.value(1)
time.sleep(1)


However this works in python shell.

Thanks !

Hi Vasili,

on boot, the script "boot.py" is executed (this changed a while ago, and in the "scripts" directory, there is still only "main.py"). Thus, try the following:

add "boot.py" to the "scripts" directory with this in it:

Code: Select all

import main

now compile+flash:

Code: Select all

make clean
make
make PORT=/dev/ttyUSB0 deploy

This should then run your "main" script.

[Vasili]

Thanks ! boot.py worked !

[MikaelNissen]

I have some sort of the same problem, but can't solve it with boot.py file in esp8266/scripts folder.

Get this massage at startup of eps8266 module:

��could not open file 'boot.py' for reading
could not open file 'main.py' for reading

#4 ets_task(401002a8, 3, 3fff4658, 4)
MicroPython v1.7-150-g0d10e53 on 2016-04-23; ESP module with ESP8266
Type "help()" for more information.


I have placed a boot.py file with "import main" and a main.py in the scripts folder before building.

[wendlers]

I have some sort of the same problem, but can't solve it with boot.py file in esp8266/scripts folder.

Get this massage at startup of eps8266 module:

could not open file 'boot.py' for reading
could not open file 'main.py' for reading

...

I have placed a boot.py file with "import main" and a main.py in the scripts folder before building.

Hi Mikael,

the boot sequence on the ESP changed lately. See this commit:

https://github.com/micropython/micropyt ... 8254a35b79

From the commit:

Upon start-up, _boot module is executed from frozen files to do early
initialization, e.g. create and mount the flash filesystem. Then
"boot.py" is executed if it exists in the filesystem. Finally, "main.py"
is executed if exists to allow start-on-boot user applications.

This allows a user to make a custom boot file or startup application
without recompiling the firmware, while letting to do early initialization
in Python code.

So to sum it up and come back to your problem:

1) You don't need to "import main.py" in you "boot.py" any more. The "main.py" and "boot.py" are started both by MP if present
2) Both, "main.py" and "boot.py" are expected to be in the flash-file-system, NOT in frozen (means not in "scripts" when compiling)

At the moment, there is no official support for uploading files to the flash FS (but it is on the way I think). To make life a little easier, I use a script I wrote. If you like to have a look at it, it could be found here:

https://github.com/wendlers/mpfshell

Regards,
Stefan

[MikaelNissen]

Thanks Stefan for the reply.

The mpfshell is very usefull to upload the files.

Regards

Mikael

[patvdleer]

Is there any update on this? I have a similar issue with main.py.

Code: Select all

#��${$�$ܟ|��{oc��d�s��pp�c䌜���c�lclsdǃr$���#$�#;|�c�㓛ǜ�l��n�og�l$���d��$����d$`�g����c��#���cl�c�l{$s�'����cp��������bd�cd�|b�b��o���b8cĜ�����#l�#d�|#d`�d��|��{r'c��d�p{�#�c서��Ǐ<�cllcl��do�$`Ãl'�p;l�l��|���could not open file 'main.py' for reading

#5 ets_task(40100350, 3, 3fff6350, 4)
MicroPython v1.8.1-37-g236838a on 2016-06-13; ESP module with ESP8266
Type "help()" for more information.
>>> scandone
state: 0 -> 2 (b0)
state: 2 -> 3 (0)
state: 3 -> 5 (10)
add 0
aid 3
cnt 

connected with 0x43.2, channel 1
dhcp client start...
ip:192.168.178.12,mask:255.255.255.0,gw:192.168.178.1

>>> import main
WebREPL daemon started on ws://192.168.4.1:8266
WebREPL daemon started on ws://192.168.178.12:8266
Started webrepl in normal mode
>>> 

My main.py files contains nothing more than:

Code: Select all

import webrepl
webrepl.start()

This only happens when I compile it with the image, not when I transfer the files via mpfshell.