Over the air (OTA) firmware update (LoPy4)
Asb last edited by Asb
I am trying to do a OTA firmware update using this guide, where I ran into some issues.
From the docs:
Firmware: These files should be named in the format firmware_VERSION.bin, where VERSION is a a version number compatible with the python LooseVersion versioning scheme (http://epydoc.sourceforge.net/stdlib/distutils.version.LooseVersion-class.html).
This file should be in the format of the appimg.bin created by the Pycm firmware build scripts.
I downloaded 1.18.1.r1 firmware from here and got the following files after unpackaging:
appimg.bin, bootloader.bin, lopy.bin, partitions.bin and script.file
Do I simply rename the appimg.bin to firmware_1.18.1.r1.bin and place it in the directory specified in the docs?
Milan last edited by
This post is deleted!
I am able to do an OTA update, i.e. changing from green to blue light as in the script/guide previously linked. However, its when I add the firmware.bin files to the directory I get errors, like the one shown in the post before this one.
@iwahdan @rskoniec thanks.
I am however still having problems.
I just renamed all the 1.16.0.b1 files to 1.0.0 and 1.18.1.r1 to 1.0.1 to avoid this as stated in the OTA_server.py (because I dont know how to):
# In order for the URL's to be properly formatted you are required to send a # "host" header along with your HTTP get request e.g: # GET /manifest.json?current_ver=1.0.0 HTTP/1.0\r\nHost: 192.168.1.144:8000\r\n\
In my IDE where I am running the OTA_server.py I get the following error message when requesting:
Got query for: /manifest.json?current_ver=1.0.0 192.xxx.xx.xx - - [26/Oct/2018 11:12:31] "GET /manifest.json?current_ver=1.0.0 HTTP/1.0" 200 - Generating a manifest from version: 1.0.0 ---------------------------------------- Exception happened during processing of request from ('192.xx.xx.xx', 53954) Traceback (most recent call last): File "C:\Python37\lib\socketserver.py", line 313, in _handle_request_noblock self.process_request(request, client_address) File "C:\Python37\lib\socketserver.py", line 344, in process_request self.finish_request(request, client_address) File "C:\Python37\lib\socketserver.py", line 357, in finish_request self.RequestHandlerClass(request, client_address, self) File "C:\Python37\lib\socketserver.py", line 717, in __init__ self.handle() File "C:\Python37\lib\http\server.py", line 426, in handle self.handle_one_request() File "C:\Python37\lib\http\server.py", line 414, in handle_one_request method() File "C:\Users\user\Desktop\OTA\OTA_server.py", line 156, in do_GET manifest = generate_manifest(current_ver, host) File "C:\Users\user\Desktop\OTA\OTA_server.py", line 278, in generate_manifest latest = get_latest_version() File "C:\Users\user\Desktop\OTA\OTA_server.py", line 184, in get_latest_version if latest is None or LooseVersion(latest) < LooseVersion(d): File "C:\Python37\lib\distutils\version.py", line 52, in __lt__ c = self._cmp(other) File "C:\Python37\lib\distutils\version.py", line 337, in _cmp if self.version < other.version: TypeError: '<' not supported between instances of 'str' and 'int' ----------------------------------------
I placed some x's in my IP adress to hide it, and replaced my username with "user" in the code block above, fyi.
@asb yes, Also make sure your Lopy4 is on the same network as your OTA server.
rskoniec last edited by rskoniec
@asb I thing that version folder names should correspond with the fw file names (
firmware_VERSION.bin= folder name
firmware_1.16.0.b1.binyour version folder name should be
firmware_1.18.1.r1.binyour version folder name should be
I tried again today, but got the same error, this time my SERVER_IP was the one I found after writing ipconfig in cmd (IPv4 address).
Is this the correct address to use?
@Asb I think you are putting the wrong Server IP,
127.0.0.1.is the local host and you are running this code from LoPy4 so you must enter correct Server IP.
Asb last edited by Asb
I renamed the lopy4.bin to firmware_1.18.1.r1.bin, similar for the 1.16.0.b1 firmware and have the following directory:
- server directory |- OTA_server.py |- 1.0.0 | |- flash | | |- lib | | | |- OTA.py | | |- main.py | | |- boot.py | | |- config.py |- 1.0.1 | |- flash | | |- lib | | | |- OTA.py | | |- main.py | | |- boot.py | | |- config.py |- firmware_1.16.0.b1.bin |- firmware_1.18.1.r1.bin
Inside config.py (in both 1.0.0 and 1.0.1 folder) I have the following:
WIFI_SSID = "not show here" WIFI_PW = "not shown here" SERVER_IP = "127.0.0.1"
My main.py is the same as the one shown in the docs, only thing I've changed is removing the need to send a downlink message from the things network to initiate the OTA update, therefore my main loop looks like this:
while True: print("Performing OTA") # Perform OTA ota.connect() ota.update() sleep(5)
When I try to initiate the OTA update:
I run the OTA_server.py script using Python 3.7.1 and get no errors. Then I upload the project folder to the lopy like this (folder 1.0.0):
Then I get this following error:
@robert-hh yes sure, but using OTA update via the HTTP server, only require firmware to be named
VERSIONshould be following python LooseVersion versioning scheme, so it is the same weather to rename
As for ftp updater, considering removing
appimg.binfrom FW packages, will require update to ftp server for sure.
robert-hh last edited by robert-hh
@iwahdan The ftp.updater expects the target name to be:
So you are not free to give the image any name when uploading. Of coures you can do that on your PC, but it should include the target platform. And when uploading, the file name for storing must also be pre-defined.
Hi @Asb , actually
lopy4.bin, are identical (redundant) binarys, I recommend you rename the
firmware_1.18.1.r1.binbecause we are planning to remove the
appimg.binfrom the firmware package eventually.