Problem with RFM69.mpy file Moderators: adafruit_support_bill, adafruit

[dsheeran]

I just bought 2 RFM69 Feather Wings to use with 2 Feather M0 Express boards. I have everything wire up as per the tutorial and created code using the examples.

I have the RFM69.mpy file in the lib folder of the boards and am using version 5 of circuit python for the boards' UF2 files and for my CircuitPython library.

When I save my script and go to the Serial Console in Mu, I get the following...

_________________________________________________________________
Press any key to enter the REPL. Use CTRL-D to reload.soft reboot

Auto-reload is on. Simply save files over USB to run them or enter REPL to disable.
code.py output:
Traceback (most recent call last):
File "code.py", line 7, in <module>
File "adafruit_rfm69.py", line 72, in <module>
MpyError: Incompatible .mpy file. Please update all .mpy files. See http://adafru.it/mpy-update for more info.
_________________________________________________________________

What should I do? Is there a newer file? Do I need to move back to an older version and library of CircuitPython? If so, what version?

Please help. Thanks.

[siddacious]

That error occours when you have a mismatch between the version of CircuitPython on the board you are using and the version of CircuitPython that the mpy file was built for.

You can find more information at the URL that is in the error message:
https://circuitpython.readthedocs.io/en ... oting.html (this is the expanded URL which is shortened in the error message)

[dsheeran]

Thanks. Yes, I read that. Unfortunately the board and the file are both version 5. How can I get more information on when the file was created?

[tannewt]

Make sure *all* .mpy files on the drive are for version 5. RFM69.py must be importing something itself that is older.

[dsheeran]

Everything on the board came from the adafruit-circuitpython-bundle-5.x-mpy-20200508 bundle. So I don't know how to tell what file may be causing the problem. Is it possible for you to create a new RFM69.mpy file for this version?

[jerryn]

Have you tried just reloading the .mpy files to the board. It is possible it got corrupted. Make sure you leave time to the file system to completely withe the files after copying them before trying to execute them.

[dsheeran]

I did as you suggested and the file seems Ok now. But I'm having a different problem with it. I stripped my program down to simply test the RFM69 Wing. And now I'm getting the following error from the included code. Please let me know what you think...

Error:
___________________________________________________________________________________________

code.py output:
Traceback (most recent call last):
File "code.py", line 15, in <module>
File "adafruit_rfm69.py", line 278, in __init__
File "adafruit_bus_device/spi_device.py", line 87, in __init__
AttributeError: 'int' object has no attribute 'switch_to_output'

Code:
_____________________________________________________________________________________________
import board
import busio
import digitalio
import adafruit_rfm69

debug = True

RFM69_CS = 10 # "B"
RFM69_RST = 11 # "A"
RFM69_IRQ = 6 # "D"

spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
cs = digitalio.DigitalInOut(board.D5)
reset = digitalio.DigitalInOut(board.D6)
rfm69 = adafruit_rfm69.RFM69(spi, RFM69_CS, RFM69_RST, 915.0)
rfm69.encryption_key = (
b"\x01\x02\x03\x04\x05\x06\x07\x08\x01\x02\x03\x04\x05\x06\x07\x08"
)

if debug:
print("Radio Setup Ok")

while True:
packet = rfm69.receive()
if packet is not None:
command = str(packet, 'ascii')
if debug:
print('Received: ', command)

[dsheeran]

By the way. the error seems to be coming from this line...


rfm69 = adafruit_rfm69.RFM69(spi, RFM69_CS, RFM69_RST, 915.0)

[jerryn]

Glad you got beyond the .mpy issue

For CircuitPython set the pins like this.

Code: Select all | TOGGLE FULL SIZE

cs = digitalio.DigitalInOut(board.D5)
reset = digitalio.DigitalInOut(board.D6)
rfm69 = adafruit_rfm69.RFM69(spi, cs reset, 915.0)


but make sure the Pins are correct for your setup


remove the lines

Code: Select all | TOGGLE FULL SIZE

RFM69_CS = 10 # "B"
RFM69_RST = 11 # "A"
RFM69_IRQ = 6 # "D"


they are not used.

[dsheeran]

Please disregard. I figured it out. If anyone else is interested you have to look a little closer at the tutorial. This code will work...

import board
import busio
import digitalio
import adafruit_rfm69

debug = True

spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
cs = digitalio.DigitalInOut(board.10)
reset = digitalio.DigitalInOut(board.D11)
rfm69 = adafruit_rfm69.RFM69(spi, cs, reset, 915.0)
rfm69.encryption_key = (
b"\x01\x02\x03\x04\x05\x06\x07\x08\x01\x02\x03\x04\x05\x06\x07\x08"
)

if debug:
print("Radio Setup Ok")

while True:
packet = rfm69.receive()
if packet is not None:
command = str(packet, 'ascii')
if debug:
print('Received: ', command)