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Forum Index : Microcontroller and PC projects : CMM2 + ESP32 FTP server
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TassyJim Guru  Joined: 07/08/2011 Location: AustraliaPosts: 5880 |
This is a working version of my FTP server experiment. It is missing a lot of commands but should be useful as is. I will add more commands as I need/desire them. I have removed a few of the debug pauses and now have reasonable transfer rates: STOR Receiving: Batman1.wav .......................................................................c Receive concluded, 3051400 bytes in 78.67 secs, 38786 bytes/second. USER PASS SYST FEAT HELP CWD TYPE SIZE TYPE PORT LIST 19 files listed TYPE PORT RETR sending: Batman1.wav ................................................................................ ..................................................................... send concluded. 3051400 bytes in 153.28 secs, 19907 bytes/second. From the comments: ' Server requires ESP32 running latest AT firmware (V2.1.0.0) ' For handshaking, GPIO14 (RTS) needs to be connected to any user defined IO pin (default pin is 36) ' If you are using an ESP32-S2 series chip, this will be different. ' I included a 1k resistor in series to prevent issues if other software uses the RTS pin as an output. ' Don't use pins 37 or 40 ' ' Passive mode not supported ' tested with Total Commander on Windows and Android. ' also tested with gFTP on Linux Mint. ' a file "FTPserver.ini" is written to the current folder on program exit. ' this can be edited to change default values ' you can also change the default values in prefData: ' ' a baudrate of 460800 gives file saving @ 38kB/s and 19.9kB/s sending ' a higher baudrate doesn't result in any improvement due to limitations in the ESP32 firmware. ' Currently, the ESP8266 cannot be used with standard firmware ' ' if the program fails to exit cleanly, the ini file might not get updated. ' If you have changed the baudrate, you may have to manually edit the ini file to regain control PRINT "<ESC> = quit , X = kick connection, D = toggle Debug, V = toggle Verbose, H = show status" PRINT "B = change baudrate, R = reset ESP" The zip contains a single file. The ini file gets created on first run so you could start the program and immediately shut down then edit the FTPserver.ini file The program assumes that you have a working WiFi connection. The ESP doesn't save the NTP data so that has to be reconfigured on every start. There are a few places where I should be able to get some improvement in the sending speeds. FTPserver.zip Jim VK7JH MMedit MMBasic Help |
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| JimDrew Newbie  Joined: 07/10/2020 Location: United StatesPosts: 39 |
That's neat stuff! I *love* TotalCommander. I have been using it for many, many years - long before Microsoft required them to change the name! |
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| JimDrew Newbie Joined: 07/10/2020 Location: United StatesPosts: 39 |
Wow... just looked at your code. That is a TON of work to support the stock ESP firmware! If you were to use modem emulation firmware you can easily increase the speed _A_LOT_! For a modem emulation you would just set the baud rate and connect to the URL and then you are just passing data without any commands required. So, no doing a AT+CIPSEND command, and then having to wait on the response of a > and then sending your data block - you just send the data and that's it. Any response from the server will come through as necessary. I can really see why there is a horrible bottleneck in speed and why you would need flow control going to the ESP using this interface. Kudos to you for making it work at all! :) |
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| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 5880 |
I have made some progress. A few missing commands have been added and file names with spaces in them are now handled correctly. The program will still crash out if you try and do something like delete a directory that is not empty. I am getting reliable speeds of just under 70kB/s sending to the CMM2 and 39kB/s sending from the CMM2. The program also now runs on the ARMite F407 although at slower transfer speeds. I have to do some more tweaking for the F4. The top transfer speeds only appear with large files. 200k or more. As an example of real life, I transferred a program that consists of 136 files in 7 directories totaling 9.5MB. The transfer took 3min 45 secs. I didn't have to create any directories. That all happens complements of Total Commander. There is still a lot more work to do but the program is very usable as is. FTPserver.zip Jim VK7JH MMedit MMBasic Help |
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jirsoft Guru Joined: 18/09/2020 Location: Czech RepublicPosts: 532 |
Hello Jim, may I integrate it (or parts of it) into Napoleon Commander? I'm doing some bigger modifications now (mainly networking), so it could make sense... Jiri Napoleon Commander and SimplEd for CMM2 (GitHub), CMM2.fun |
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| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 5880 |
Use all or as much as you like. I would be very interested if you can come up with firmware for the ESP-01 module that works for FTP. Jim VK7JH MMedit MMBasic Help |
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| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 5880 |
Another small update (mainly tidy up and check against FTP specs) FTPserver.zip Jim VK7JH MMedit MMBasic Help |
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| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 5880 |
This update uses a few fixes that Peter has done for the F4 I have been spoilt by the speed of the CMM2! FTPserver.zip Jim VK7JH MMedit MMBasic Help |
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thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 3830 |
Hi Jim, Is this https://www.ebay.co.uk/itm/ESP32-WROOM-32-38-pins-Development-Board-Dual-Core-2-4-GHz-WLAN-WiFi-Bluetooth/310806001965 the correct ESP32 hardware for this program ? If not then could you please point me at what I should be buying ... even if the one I've specified *might* work then perhaps you should point me at *exactly* the one you are using, it would make troubleshooting easier. Best wishes, Tom Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| lizby Guru Joined: 17/05/2016 Location: United StatesPosts: 3008 |
Don't know what Jim is using, but my favorite ESP32 is the "D1 Mini" version: https://www.ebay.co.uk/itm/MINI-Wemos-D1-ESP32-ESP-32-WIFI-Development-Bluetooth-CP2104-Module-ESP8266-KIT/284117671026 It's less breadboard-friendly than the one you linked to, but it's compatible with the ESP8266 D1 Mini, and I have made a breakout PCB for it. I haven't yet tried the FTP program. Still mostly making do with XMODEM R and the occasional card swap (despite there being other options available). PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed |
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| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 5880 |
The only pins I have used are the serial port ones. I am not using CTS (pin GPIO15) but it is worth having it available for future uses. The layout of the board does not matter. As long as it has the 4 IO pins available - GPIO 14,15,16,16. They are the pins that the current firmware uses but I can not guarantee that the next firmware uses the same pins.  The board you are looking at should be fine. They have the required pins broken out (if the photo is to be believed) The ones I have use this layout:  The GPIOs are in the correct position but the 'purpose' for each pin is not necessarily correct on the diagram. No point referring to the exact purchase I made, it was an Australian supplier and the item has been 'updated' since my purchase. Jim VK7JH MMedit MMBasic Help |
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| thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 3830 |
Thanks Jim, Am I also going to need a firmware programmer for the ESP32 of some sort ? Best wishes, Tom Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| lizby Guru Joined: 17/05/2016 Location: United StatesPosts: 3008 |
Modules with USB onboard should not need additional hardware (unlike the ESP-01). If you need to update the firmware, there are a number of uploaders available, including the one in the zip file in matherp's ESP-01 thread here or from Expressif here . I'm not sure where the latest ESP32 AT firmware is (if that is needed). ~ Edited 2021-03-10 00:04 by lizby PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed |
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| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 5880 |
Latest AT binary (if needed) https://docs.espressif.com/projects/esp-at/en/latest/AT_Binary_Lists/ESP32_AT_binaries.html You will need the first one on the page. espressif also have plenty of documentation available. It can take a bit to sort out which docs you want. Jim VK7JH MMedit MMBasic Help |
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