SDTEST.Py - no module named pyb error

[dsssssssss9]

Hi

When i run the sdtest.py example that was supplied on my unit i get the following error...

Traceback (most recent call last):
File "", line 1, in
ImportError: no module named 'pyb'

Please help

[andypiper]

How are you running this example? Are you using main.py?

[andypiper]

Confirmed that I can connect to a brand new StackyPi (it runs MicroPython 1.17 as delivered). It contains a single file (sdcard.py). I'm able to import sdcard in the REPL and then run lines of code to access it, based on the example in GitHub.

I don't see a file called sdtest.py (although, confusingly, the "Getting started" video on YouTube does show one, which does not seem to exist in this repository)

[sbcshop1]

sdtest.py file and main.py file are the same. we change the name so you can run as main file

[andypiper]

So to the point of this issue @dsssssssss9 how are you running the code? I haven’t seen a reference to pyb myself. My StackyPi shipped with just sdcard.py installed on it (although it would have been better if this was frozen into the MicroPython build) so I was able to import it in the REPL and access a card ok.

[dsssssssss9]

Hi

I connect my StackyPi to My PC

Start up Thonny

thonny reports i am running MicroPython v1.15-13-g530c76f6c-dirty on 2021-04-25

Files list shows sdcard.py & sdest.py

i insert a blank, formatted sdcard into the StackyPi

i double click on sdtest.py to load it into thonny
this contains the following code....

`import pyb, sdcard, os
sd = sdcard.SDCard(pyb.SPI(1), pyb.Pin.board.X5)
pyb.mount(sd, '/sd2')
os.listdir('/')``

when i click on run i get the error message shown below...

%Run -c $EDITOR_CONTENT
Traceback (most recent call last):
File "", line 1, in
ImportError: no module named 'pyb'

[sbcshop1]

We comment this part of the code, if you use pyboard then you need to uncomment this part of code. in stackypi we don,t need this part that's why we comment these lines

[dsssssssss9]

I have not commented/uncommented anything !

this is the full sdtest.py as supplied on my StackyPi

no other files or changes have been made to it in anyway - i just took it out of the box, plugged it in & ran the sdtest.py

I have no pyboard

from #2 it appears others have MicroPython 1.17 installed from the factory?

However according to Thonny mine shipped with MicroPython v1.15-13-g530c76f6c-dirty on 2021-04-25

Could this be part of my problem?

[sbcshop1]

Still you get the same problem? can you send me the screen shot of the that part of code to our mail id

[dsssssssss9]

this is the ENTIRETY of the code
it is the sdtest.py file that came supplied on my StackyPi from the factory

Again i have added / removed NOTHING - this is my out of the box experience!!!

[whab]

I guess the most basic test that should have been provided for accessing the SD card would be the following one (successfully tested on a StackyPi with MicroPython v1.15-13-g530c76f6c-dirty):

from machine import Pin, SPI
import sdcard
import os

spi=SPI(1,sck=Pin(10),mosi=Pin(11),miso=Pin(12))
sd=sdcard.SDCard(spi,Pin(9))
vfs = os.VfsFat(sd)
os.mount(vfs, "/fc")
print("List directory:")
print(os.listdir("/fc"))
os.umount("/fc")

[andypiper]

Super strange, I just followed the same steps as you on my Mac (with a StackyPi that arrived yesterday) and it reports MicroPython v1.17 on 2021-09-02; Raspberry Pi Pico with RP2040 and only has sdcard.py pre-loaded, so I guess they are different batches.

Per #2 it would be helpful to have a board definition so those of us interested could build our own firmware with an up-to-date MicroPython.

I agree that @whab has provided a nice basic test example there. It might be a good idea for us to set up a community project for StackyPi examples to complement the stuff that SBC has provided. FWIW, it looks like the code in this repo is basically just (unattributed) adjusted copies of the Pyboard samples from the main MicroPython repository.

[andypiper]

Actually, that example only works if you already have a filesystem on the card, so it probably needs something more in case you have an uninitialised card or something not in vfat format.

[andypiper]

Started a repo to collect known information and examples. Discussions are available if you want to learn along with me!

[ckuehnel]

I get the following error for the marked line:

from machine import Pin, SPI
import sdcard
import os

print("StackyPi SD Card Test")

spi=SPI(1,sck=Pin(10),mosi=Pin(11),miso=Pin(12))
sd=sdcard.SDCard(spi,Pin(9))
vfs = os.VfsFat(sd)
os.mount(vfs, "/fc")
print("List directory:")
print(os.listdir("/fc"))
os.umount("/fc")

%Run -c $EDITOR_CONTENT
StackyPi SD Card Test
Traceback (most recent call last):
File "", line 15, in
File "sdcard.py", line 54, in init
File "sdcard.py", line 87, in init_card
File "sdcard.py", line 135, in init_card_v2
OSError: timeout waiting for v2 card

Any idea?

[andypiper]

I’ll check mine in the morning, but what version of MicroPython do you have on the board @ckuehnel ?

[sbcshop1]

this is the ENTIRETY of the code it is the sdtest.py file that came supplied on my StackyPi from the factory

Again i have added / removed NOTHING - this is my out of the box experience!!!

delete all the files inside stackypi, and newly save sdcard.py from the sd_card folder, then run main.py from sd_card folder which is inside the stackypi directory. may be in some stackypi mistakenly the "sdtest.py" file save, we apologize for this

[ckuehnel]

This program will show some information about the StackyPi board and the usage of some on-board resources of Raspberry Pi Pico Board The external led blinks ones per second This is a Raspberry Pi Pico with RP2040 Installed firmware version is v1.18 on 2022-01-17 (GNU 11.2.0 MinSizeRel) Platform is rp2 Micropython version is 3.4.0 CPU frequency is 125 MHz On-Chip temperature is 4.6 °C Another problem is the chip temperature as you can see. The used program is # StackyPi_Internals.py #  # This sample program shows some information  # and uses some on-board resources to illustrate their query # (c) 2021-02-04 Claus Kuehnel ***@***.***) import machine, time, sys, uos from machine import Timer, Pin, ADC led = Pin(25, Pin.OUT)   # external LED on Pi Pico t   = Timer() temp   = ADC(4) # use channel 4 for measuring temperature conversion_factor = 3.3 / (65536) def blink(Timer): led(1) time.sleep_ms(20)      # LED on for 20 milliseconds led(0) t.init(period=1000, mode=Timer.PERIODIC, callback = blink) print('\nThis program will show some information about the StackyPi board') print('and the usage of some on-board ressources of Raspberry Pi Pico Board\n') print('The external led blinks ones per second\n') print('This is a {}'.format(uos.uname().machine)) print('Installed firmware version is {}\n'.format(uos.uname().version)) print('Platform is {}'.format(sys.platform)) print('Micropython version is {}'.format(sys.version)) print('CPU frequency is {:3.0f} MHz'.format(machine.freq()/1e6)) # read value, 0-65535 across voltage range 0.0v - 3.3v reading = temp.read_u16() * conversion_factor      # The temperature sensor measures the Vbe voltage of a biased bipolar diode, connected to the fifth ADC channel # Typically, Vbe = 0.706V at 27 degrees C, with a slope of -1.721mV (0.001721) per degree.  intTemp = 27 - (reading - 0.706)/0.001721 print('On-Chip temperature is {:3.1f} °C'.format(intTemp)) Dr. Claus Kühnel - Talstr. 13b - CH-8852 Altendorf Mobile +41-76-3960801 -- Aus dem Rheinwerk-Verlag: Arduino - das umfassende Handbuch ISBN 978-3-8362-7345-9 [https://www.rheinwerk-verlag.de/arduino-das-umfassende-handbuch/] --  Am 03.05.2022 04:10:34 schrieb Andy Piper ***@***.***>: I’ll check mine in the morning, but what version of MicroPython do you have on the board @ckuehnel [https://github.com/ckuehnel] ? — Reply to this email directly, view it on GitHub [#1 (comment)], or unsubscribe [https://github.com/notifications/unsubscribe-auth/AABPZTGOWJ5HJFG44MSCGELVICDJLANCNFSM5S2J273Q]. You are receiving this because you were mentioned.Message ID: ***@***.***> [24d478b1-430a-4452-b4d9-5a0b43eccf51]

[sbcshop1]

I get the following error for the marked line:

from machine import Pin, SPI import sdcard import os

print("StackyPi SD Card Test")

spi=SPI(1,sck=Pin(10),mosi=Pin(11),miso=Pin(12)) sd=sdcard.SDCard(spi,Pin(9)) vfs = os.VfsFat(sd) os.mount(vfs, "/fc") print("List directory:") print(os.listdir("/fc")) os.umount("/fc")

%Run -c $EDITOR_CONTENT
StackyPi SD Card Test
Traceback (most recent call last):
File "", line 15, in
File "sdcard.py", line 54, in init
File "sdcard.py", line 87, in init_card
File "sdcard.py", line 135, in init_card_v2
OSError: timeout waiting for v2 card

Any idea?

Kindly format the SD card with the sd card formatter, and make sure the sd card format is fat32 format

[andypiper]

It would probably be better to have the sample check if the SD card is already initialised (or, have documentation that explains that this is necessary before it is run, since I also discovered this for myself and not from the information from SBC).

The internals test code runs OK here but the temperature measurement seems to be off. I'll take a look. If you're interested, you're welcome to contribute that program to my StackyPi community project rather than having it as a comment inside an issue on this repo 😄

[ckuehnel]

I will do that. But, I have no access for upload. What can I do? Dr. Claus Kühnel - Talstr. 13b - CH-8852 Altendorf Mobile +41-76-3960801 -- Aus dem Rheinwerk-Verlag: Arduino - das umfassende Handbuch ISBN 978-3-8362-7345-9 [https://www.rheinwerk-verlag.de/arduino-das-umfassende-handbuch/] --  Am 03.05.2022 13:29:06 schrieb Andy Piper ***@***.***>: It would probably be better to have the sample check if the SD card is already initialised (or, have documentation that explains that this is necessary before it is run, since I also discovered this for myself and not from the information from SBC). The internals test code runs OK here but the temperature measurement seems to be off. I'll take a look. If you're interested, you're welcome to contribute that program to my StackyPi community project [https://github.com/andypiper/stackypi-style] rather than having it as a comment inside an issue on this repo 😄 — Reply to this email directly, view it on GitHub [#1 (comment)], or unsubscribe [https://github.com/notifications/unsubscribe-auth/AABPZTEAXNSQ2THUYCGVGPLVIEEX5ANCNFSM5S2J273Q]. You are receiving this because you were mentioned.Message ID: ***@***.***> [9114fdce-60ac-4162-b458-b79a345bb644]

[andypiper]

You can just send a pull request on GitHub.