New firmware release v1.17.0.b1 (Completely new LTE class)

[daniel]

Hello,

The highlight is that the LTE class has been completely re-written, the functionality is complete and it also allows to send AT commands directly to the cellular radio. The API has changed a bit, so make sure to check the docs here: https://docs.pycom.io/chapter/firmwareapi/pycom/network/lte/cat-m1.html

Here's the complete change log:

• esp32: New LTE class with comprehensive methods and an option to send AT commands directly. Fix high power consumption issues on the FiPy, GPy and G01 when entering deepsleep.

• esp32: Fix power output problems for the FiPy and LoPy4 on Sigfox.

• esp32: Correct LoRaWAN version number to 1.0.2.

• esp32: Fix antenna selection API for the second generation modules.

  Also add antenna selection option for Bluetooth. See: https://docs.pycom.io/chapter/firmwareapi/pycom/network/bluetooth/#bluetoothinitid0-modebluetoothble-antennanone

• esp32: Fix LoRaWAN ADR behaviour. Enhance lora.stats(). See: https://docs.pycom.io/chapter/firmwareapi/pycom/network/lora.html#lorastats

• esp32: Fix Sigfox lock-up on the SiPy.

• esp32: Erase LoRA NVS area if the LoRaWAN region is different than before.

• esp32: Adding RMT class to machine module

• esp32: Raise specific exception if region in config block is 0xff.

• esp32: Do not return a default region if value in flash is not set (0xff)

• esp32: Take the LoRa region from the config block if not specified.

IMPORTANT: This release requires a a mandatory upgrade of the updater tool.

Cheers,
Daniel

[Xykon]

A few notes about the new updater tool:

It now supports re-setting the default LoRa region stored in flash memory. This is only supported when upgrading the firmware via the online software server.

It now supports flashing from a local file.

It also now supports offline mode that allows flashing from a local file when no online connection is available or the software server is unavailable. It is now also possible to "retry" to connect to the software server if the connection has failed. The initial timeout is 5 seconds and will be increased by 5 seconds on every attempt up to a maximum of 60 seconds.

@seb is working on the documentation for the CLI tool. It has a few new features which you might find helpful.

First off there are now some helpful messages being displayed by default. For scripting purposes, there is a new global option -q / --quiet to disable the messages.

One of the new messages being shown is the mode in which the updater is operating. If it shows PIC mode, it is trying to use the Pytrack / Pysense to automatically switch into firmware update mode. If it shows FTDI mode, this indicates an Expansion Board 2.0 (or 3rd party adapter). There are some rare cases where this detection could fail, and you can now force either mode by using the global --ftdi / --pic options. [Update:] These options can now also be used with the update command for the Linux dialog based updater.
Other notable changes are the sigfox command now functioning correctly and a new option in the lpwan command --erase_region which allows erasing the default LoRa region in flash memory. The other new commands lpwan --lora_region and write_remote are specifically to support the dialog based cli updater for Linux and especially write_remote is not intended for general use.

As Daniel mentioned this is a mandatory update and you might see various types of error messages in earlier version.

If you have any issues with this new version please don't hesitate to contact me and I will try to help / fix it as quickly as possible.

[danielm]

@Xykon
It's great to see option to flash from local file implemented.

Does it perform full flash erase prior to upgrading? If not, would it be possible to add such option?

[Xykon]

@danielm May I ask what would be the purpose of that? Is it just to erase the flash file system or do you have any reason to erase the config, nvs and ota partitions?

[robert-hh]

@daniel I'm a little bit sad that you did not add a fix to deactivate Ctrl-F if wanted.

[danielm]

@Xykon
I currently use esptool.py to perform flash erase mainly because my application checks for a flag in the NVS when booting. If this flag is not present initialization routine is launched during first boot after the upgrade. Secondly I would like to be sure that no data from previous versions will stay in the file system. My application creates config file (during first boot) which may differ between versions of the firmware.

[Xykon]

@danielm I would not allow this in a general release.

Since you are using custom firmware, you can define the erase yourself in the script file. See below example from the LoPy archive:

[
    ["e", "0x1000",      "0x40000"],
    ["e", "0x41000",     "0x40000"],
    ["e", "0x81000",     "0x40000"],
    ["e", "0xC1000",     "0x40000"],
    ["e", "0x101000",    "0x40000"],
    ["e", "0x141000",    "0x40000"],
    ["e", "0x181000",    "0x40000"],
    ["e", "0x1C1000",    "0x40000"],
    ["w", "0x1000", "bootloader.bin"],
    ["w", "0x8000", "partitions.bin"],
    ["w", "0x10000", "lopy.bin"]
]

All lines starting with "e" are erase commands. Then you have the start block and the erase size (which is limited to 0x40000).

Please keep in mind that if you use a LoRa or Sigfox device then the LoRa MAC address and Sigfox credentials are stored in the config block (0x3FF000) and if you don't have an online connection while flashing, these details would not be restored. If a device is erased before being flashed for the first time with the online updater, the LoRa MAC address will be permanently lost.

P.S. Could you please send us an email at support@pycom.io with a reference to this discussion. I have a few ideas that might work really well for you and allow us to get some feedback at the same time.

[Neuromystix]

@daniel using lora.stat() in lorawan mode is always getting 0 value in tx_power and tx_frequency. It's supposed to be like that??? All the other fields appear to be fine.

[jcaron]

@neuromystix tx_frequency is incorrect and always returns 0.

tx_power should show correct values. Note that it represents the power setting as specified in the regions spec, so for instance in EU868 0 is max, 1 is 2 dBm below max, etc.

[Neuromystix]

@jcaron Iep, for tx_power it make sense, following the specification. Only now i read your last post that say the frequency problem.

Not that i need this values, however since i'm testing ADR (and checking if in this release it works better) i added a print of stats and found that 0 values strange. At least for the frequency.

[jcaron]

@neuromystix It should work better, with the data rate no longer stuck at the default value forever.

I'm not 100% convinced by the approach chosen which is to ignore completely data rate set requests if ADR is enabled (I would still allow them and use them as a starting point until either the network says something or there are enough losses to change), let us know what you think.

Note that there are still at least 2 issues I'm aware of when using LoRaWAN with deep sleep:

• the channels mask is not saved/restored, so after deep sleep you go back to the default channel numbers.
• buffered MAC commands are not properly restored, so MAC command ACKs will never be sent and the network will continue to send the request again and again (if you sleep after each frame).

[Neuromystix]

@jcaron Confirmed: If i manually change DR in Lorawan Server (with ADR disabled or enable on device), Lopy also change it. In old versions it wasn't working.

I'm not using deep sleep right now (don't have any shield yet) however i'm using lora_save/restore and after the first restart i loose all the additional 5 channels, being stuck at the default 3 (868.1, 868,.3, 868,5). In my project i need the devices to be restart tolerant, even if i don't use deep sleeps. I workaround it, re-initiating all the 8 channels after call nvram_restore(), when restarting and when already activated. If i don't do it, restore() get the three default channels. Maybe it's not the correct way to do it but worked here.
Not really sure what is being stored by lora.nvram_save(), it should be clarified in documentation. I know that FCnt and keys are stored but what else?

@jcaron Is there any simple way to check what's going on at Lopy MAC layer? At server side i can check the log's, but in the devices i don't know how?

[jcaron]

@neuromystix The issues with deep sleep would be the same if you use nvram_save/restore around a restart/power down.

The channels issue is due to the channels mask not being saved/restored, I suppose @daniel should be able to fix it soon along with the MAC command buffer issue.

nvram_save saves a lot of things (this has grown significantly over the various firmware releases), but there's always one additional bit missing :-( The Semtech LoRaWAN stack has a tendency to have the state spread out over lots of different places which makes it a bit difficult at times.

To know what's happening at the MAC layer, at the moment the only way I know of is to rebuild the firmware yourself and add traces. I have dozens of printfs all over there right now :-) I agree that it would be really, really helpful if there was a way to activate some kind of debug/monitor mode which would show all the data being sent/received along with the different settings (frequency, data rate, power...), though given how the Semtech LoRa stack is structured, it's not necessarily easy.

[Neuromystix]

@jcaron Iep that was the MAC layer solution i was thinking about. Right now i don't have time to try it. But i'm following your feedback ;)

This evening i will continue my tests with ADR.

[losi]

Can someone point me towards the URL of the new updater tool (OSX) and download link for v1.17.0.b1? I am having lots of problems with SigFox locking up, so I'd love to test this.

[seb]

@losi
The links at the top of this page should always point to the latest version:
https://docs.pycom.io/chapter/gettingstarted/installation/firmwaretool.html

[Neuromystix]

@jcaron simple question: what is the default DR/power you get when starting a device with ADR enabled?

Yesterday i tried ADR, which appear to be working but always started at DR0. After the server send the LinkADRReq command Lopy change DR, so in a simple way it appears to be working. However server is configured to start with DR5, Lopy the same, but always start with DR0. Same code, with ADR disabled and Lopy start with DR5 without problem.

[jcaron]

@neuromystix as I understand the changes as @daniel made them in this version:

• if ADR is enabled then it will start at DR0 (SF12), and change if the network says otherwise (LinkADRReq) or there's enough packet loss to increment the DR
• if ADR is not enabled, then each single frame will be sent with the data rate configured via setsockopt, or DR5 (SF7) if nothing has been specifically set. Not sure if LinkADRReq requests are denied or accepted, but they will have no effect.

[Colateral]

Board: L01

CRASH with flash erase. This is happening often after sending multiple Lora messages as request and receiving a Lora message as response in a simple Lora - Lora connection.

Can someone explain why ESP32 is flashed? - my scripts are erased and also main.py and boot.py are restored to default.
I checked also with uos.listdir() and there are a lot of junks (see below after crash uput)

            Guru Meditation Error: Core  1 panic'ed (Cache disabled but cached memory region accessed)
            Register dump:
            PC      : 0x400dbec8  PS      : 0x00060034  A0      : 0x80084c68  A1      : 0x3ffc1390
            A2      : 0x3ffc784c  A3      : 0x00000001  A4      : 0x8008bf73  A5      : 0x3ffc13a0
            A6      : 0x00000020  A7      : 0x00000020  A8      : 0x80084a58  A9      : 0x3ffc1370
            A10     : 0x00000012  A11     : 0x3ffc1391  A12     : 0x3ffc1391  A13     : 0x3ffc7864
            A14     : 0x3ffc7854  A15     : 0x00000402  SAR     : 0x0000000e  EXCCAUSE: 0x00000007
            EXCVADDR: 0x00000000  LBEG    : 0x4009a73c  LEND    : 0x4009a76a  LCOUNT  : 0x00000000

            Backtrace: 0x400dbec8:0x3ffc1390 0x40084c65:0x3ffc13c0 0x40083f0b:0x3ffc13f0 0x40083585:0x3ffc1410 0x400621f9:0x00000000

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            sDH9PwAAAAD/////9FH8PwAAAAAEGfw/IAAGAAAAAAAAAAAAAAAAADynCUBqpwlA
            /////y01CEAAAAAASM0IQMjg+D8AAAAAAAAAAAAAAAD//z+zAAAAAAAAAAAAAAAA
            AAAAAAAAAAAAAAAAAAAAAPRR/D8AAAAABBn8PyAABgAAAAAAEDL9P4RO/D+MTvw/
            AAAAAAoJAAAJAAAAIAAGAP////8QMv0/yFj7P4xO/D8kaf0/AAAAANho/T8AAAAA
            AAAAADAy/T8AAAAAAAAAAAAAAAAAAAAAjE78PwAAAAAAAAAAAAAAAAAAAAAAAAAA
            AAAAAAAAAAA8Mv0/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
            AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
            AAAAAAAAAAAAAAAA
            LMn9P4Dg/T+Y4v0/
            gOD9PzDi/T9dOJVYzD39P4RP/D8syf0/fE/8Pw4AAABcw/0/XMP9PyzJ/T9Uw/0/
            CwAAAJzK/T9JUlFzAEp92baI7hUgPNgAAQAAAJji/T8AAAAAIQAGAAsAAAAAAAAA
            AAAAAMzh/T8AAAAAAAAAAAAAAAA0Z/0/nGf9PwRo/T8AAAAAAAAAAAEAAAAAAAAA
            ullAPwAAAAAcrwlAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
            AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
            AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
            AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
            AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAg3VOA==
            NDMIQAixCEAwAQYAI4MOgEDh/T8ww/0/4OH9P3zD/T8AAAAAhMP9PwAAAAAIsQiA
            IOH9PwEAAAD/////+FH8PwEAAAAEGfw/AAAAAAAAAADIkPk/AAAAAAAAAAAAAAAA
            AAAAAC01CEABAAAASM0IQMiQ+T8AAAAAAAAAAAAAAAD//z+zAAAAAAAAAAAAAAAA
            AAAAAAAAAAAAAAAAAAAAAAAAAABjAAAApaWlpaWlpaXI0w2AgOH9P9hd/D/g4f0/
            AAAAAGsAAAClpaWlpaWlpf////+A4f0/tGD8P+Dh/T8AAAAAAQAAAMxd/D+AM/w/
            AAAAABDi/T/MXfw/AAAAADDi/T8AAAAAAAAAAAAAAAAAAAAAzF38PwAAAAAAAAAA
            AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABQX/w/
            UF/8PwAAAADg4f0/ABQAAMiQ+T8AAAAAAAAAAAAAAABQX/w/AAAAAAoAAAD///9/
            AAAAADDi/T8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
            AAAAAAAAAAA84v0/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
            AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
            AAAAAAAAAAA=
            ================= CORE DUMP END =================
            E (10277) esp_core_dump: Skipped 1 tasks with bad TCB!
            E (10282) esp_core_dump: Crashed task has been skipped!
            Rebooting...
            ets Jun  8 2016 00:22:57

            rst:0x3 (SW_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
            configsip: 0, SPIWP:0xee
            clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
            mode:DIO, clock div:1
            load:0x3fff9028,len:8
            load:0x3fff9030,len:1060
            load:0x4009fa00,len:0
            ho 12 tail 0 room 4
            load:0x4009fa00,len:14096
            entry 0x400a05e0
            MicroPython d0dc708-dirty on 2018-03-01; LoPy with ESP32


            >>> uos.listdir()
            ['\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', 
            '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x 00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00',
            '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x0 0.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', 
            '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x0 0\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00',
            '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x0 0\x00\x00\x00\x00.\x00\x00\x00', 
            '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', 
            '\x00\x0 0\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00',
            '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00',  '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', 
            '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x0 0\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', 
            '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00 .\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00',
            '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00 \x00\x00.\x00\x00\x00',
            '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', 
            '\x00\x00\x00\x00 \x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', 
            '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00 \x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', 
            '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', ' \x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', 
            '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', '\x00\x00\x00\x00\x00\x00\x00\x00.\x00\x00\x00', 'main.py', 'sys', 'lib', 'cert', 'boot.py']

[robert-hh]

@daniel @Xykon @seb Thanks for the Linux software updater. I ignored that since a while, and I am still not using it for software updates, but it has a lot of other management options, which are very useful.