Have you checked you've got the correct comm port & that your repl program (eg Atom) is closed?

Solved after a reboot!

Hi, I believe you are experiencing the same issues as discussed here: https://forum.pycom.io/topic/5765/loadprohibited-core-panic-when-initialize-wlan Can you review the discussion? There are of course slight differences between the antennas etc. on the boards (manufacturing tolerances etc) and doing a full erase using the update firmware tool might help in that regard. Let me know!

We've had some reports that using a low voltage (outside of spec, like using an empty battery) might corrupt the filesystem when using littleFS. In that scenario, fatFS is more stable (not sure of the exact workings)

Hey @aidanlok Hope you are doing well. Just curious, were you able to perform speedtest? Also, how did you installed the uiperf3 ? Copy uiperf3.py in the lib folder?

I've had 2 GPYs (out of 10) in the last 2 years where the RF section of the lte modem simply died. These RF dead modems show something bizarre like -1000 or -2000 for the Frequency Hypothesis RF (Hz) line in response to def send_at_cmd_pretty(cmd): response = lte.send_at_cmd(cmd).split('\r\n') for line in response: print(line) send_at_cmd_pretty('at+cfun=1') send_at_cmd_pretty('AT!="showphy"') # get the PHY status run after trying to attach them, whereas an unsuccessfully attached modem with functional RF shows 0 for the frequency hypothesis.

@toughrock Can you explain us why you don't want to save NVRAM? The ACK flag is a LoRaWAN feature that is driven automatically by the LoRaWAN stack. When you receive a (confirmed) downlink, the next uplink will have the ACK flag set, so the network knows the downlink has been received and it can send the next one (otherwise it will send the same downlink again). If the network and/or network API and/or server support it, you could simply set the downlink as UNCONFIRMED and you would not need the ACK to be set. But going to deep sleep without saving the LoRaWAN state will result in a lot more issues than just a missing ACK flag: Frame counters will be reset You would have to re-join each time, which is time-consuming Other MAC commands would have no effect, such as channel list updates, ADR, etc. So, what's your issue with saving the LoRaWAN state?

Having the exact same issue. Multiple notifications with <10ms intervals will cause the same value to be presented in the call backs. :(

@aasodisen Add a second argument, e.g. def char1_cb(chr, arg1=None): print(chr) This should work. Best regards

FIXED: from network import Bluetooth bluetooth = Bluetooth() bluetooth.set_advertisement(name='GPy', service_uuid=0x1815) def conn_cb (bt_o): events = bt_o.events() if events & Bluetooth.CLIENT_CONNECTED: print("Client connected") elif events & Bluetooth.CLIENT_DISCONNECTED: print("Client disconnected") bluetooth.callback(trigger=Bluetooth.CLIENT_CONNECTED | Bluetooth.CLIENT_DISCONNECTED, handler=conn_cb) bluetooth.advertise(True) srv1 = bluetooth.service(uuid=0x1815, isprimary=True) chr1 = srv1.characteristic(uuid=0x2A56, properties=Bluetooth.PROP_READ, value=0x01) def char1_cb_handler(chr, *args): events = chr.events() if events & Bluetooth.CHAR_READ_EVENT: print("Read request on char 1") else: print("invalid chr1 event") char1_cb = chr1.callback(trigger=Bluetooth.CHAR_READ_EVENT, handler=char1_cb_handler)

Hi, Did you check whether your WiPy is connected to wifi? If WiPy is not connected to wifi, you can receive oserror. After being sure that your WiPy connected to wifi, please try your code. Best,

@htrifol If you have setup Wi-Fi, you can use FTP to view files on your device. Note that there are limitations to this, see the documentation for configuration settings.

@AM The "ValueError: Firmware out of date" message comes from the Pysense firmware being too old, not the FiPy's.

@jmarcelino do you already searching for a solution or have found it ???? I have the same problem

Me, too! I actually have a pysense v1.0. Trying to DFU firmware v0.0.8 on MacOS 10.14, and am getting the same error ("dfu-util: Cannot set alt interface zero")