MicroPython
Replies: 20 comments 25 replies
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So when you connect to the device directly with Putty and then hit the reset button on the ESP and do you see any information coming through at all? |
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Also maybe try decreasing the file system size yourself as a test: |
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I faced the same problem，and I use the command what you said， but also can't solve the problem. This is Putty‘s reply. |
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This could be a baudrate mismatch. On your terminal app, set the baud rate to 115200. |
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Can you show a picture of the board? |
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I had the same problem as stated initially and this solution worked! Thank you! |
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oh，I meet the same problem，have any solution？ |
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I think I find the solution，just change the flash size when you burning firmware，just like this |
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thanks a lot ,i use the nodeMCU ,met the same problem, now it can work . |
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Hello
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The previous tests has been made with Thonny The esptool command is 👍esptool.py --port COM27 write_flash --flash_size=detect -fm dio 0x00000 esp8266-20220618-v1.19.1.bin Leaving... |
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The usual lesson: If it fails with Thonny, try without Thonny. |
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I looked in detail at the esptool command that works and I noted the parameter -fm dio In fact in Thonny you have to select Dual I/O (dio) as flash mode : It works |
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robert-hh did you try Dual I/O (dio) to flash firmware with Thonny ? |
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I never use Thonny. Too much "magic" under the hood. |
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DIO is the default mode of esptool.py. If uploaded firmware using edptool.py fails, either one has to select a different flash mode, like DOUT, or specify the flash size instead of using detect for the flash size. |
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which tool are you using to develop micropython code ? |
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Just simple ones: Code editor either on the PC, like VSC or Sublime text, or on the board, the self written pye editor. For script transfer I use what's available, like recently mpremote, earlier ampy or rshell, or ftp if feasible. Firmware upload is done by esptool.py, either by directly calling it or as part of the ESP8266 Makefile. And obviously as the most primitive tools head & hand. |
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I have been having similar issues with several ESP8266 NodeMCU dev boards. They flash fine but then they constantly reset. I have tried several cables, firmware versions, flash command variations and even different laptops. I have some ESP32 boards that are working great, just the ESP8266 flavors having trouble. ets Jan 8 2013,rst cause:4, boot mode:(3,6) wdt reset |
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I have the same problem with 2 cards. Try to esptool, finally ok： esptool.py --port COM27 write_flash --flash_size=detect -fm dio 0x00000 esp8266-20220618-v1.19.1.bin |
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Did you try the various Besides that, you could use a more recent firmware version. But that is not related to the problem you see. |
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Hello. I have flashed uPython on my ESP-01 with 1MBytes flash. My board is home made, with RS232C interface (for the other projects I work with) and I use FTDI USB to RS232C interface board. All hardware is confirmed working because I have used this to flash lua.init, AT commands and more and they all work. There is no REPL boot prompt. This is my erase flash command: And the command to flash on ESP-01: Leaving... When connected to Thonny, the message is that the device is busy....the standard error. After going through many web sites and web pages over the last one week, I have nt been able to resolve this issue. I am keen to get uPy working on my ESP. but am stuck with this problem. |
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Hello. After much trials, the following commands offered the solution: I specified flash mode DOUT, flash freq 26m (because the ESP-01 is clocked at 26MHz), and size 1MB. I got the response properly. The on a terminal with 74480 baud, i saw the following: load 0x40100000, len 30720, room 16 SDK ver: 2.2.0-dev(9422289) compiled @ Nov 3 2017 19:40:08 And on the terminal at 115200 baud, on bootup: REPL prompt received. I tried print("hello"). it worked. |
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I am having the same issue with 3 Espressif ESP8266-01 boards: I can flash microPython to the boards but in none of the methods of downloading microPython code modules (Thonny, picocom,ampy and repl) was I able to download even a small boot.py module. The errors range from error 1 in Thonny to ampy.pyboard. The port_diag command I ran at the microPython prompt gave: Networking: So this begs the question: does the 8266-01 have enough flash memory to run microPython code. BTW, if I typed in a few commands, like
|
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Oh, and ESPHome just hangs. |
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Most ESP-01 modules have 1 MB of Flash or less. There are cut-down MicroPython installations for those boards: MicroPython - Python for microcontrollers |
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Hello Kevin.
I had a similar problem. After some searching on the Web, this is what I
did:
*ESP-07 – 4MiB -- this is my ESP module*
Erase flash (GPIO grounded, baud 115200, COM3, cmd terminal) - first erase
flash
C:\Users\User>esptool.py --chip esp8266 erase_flash (Enter)
esptool.py v4.5.1
Found 1 serial ports
Serial port COM3
Connecting....
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: 18:fe:34:a2:73:66
Uploading stub...
Running stub...
Stub running...
Erasing flash (this may take a while)...
Chip erase completed successfully in 10.9s
Hard resetting via RTS pin...
Flashing version v1.20.0 with 2+ MiB firmware (620KB)
After erasing flash use this command to flash micropython. Use <flash_mode
dout>, <specify flash_freq, flash_size>, give full path of your firmware. I
used the firmware <esp8266-20230426-v1.20.0.bin>
C:\Users\User>esptool.py --chip esp8266 --port COM3 --baud 115200
write_flash --flash_mode dout --flash_freq 26m --flash_size 4MB 0x0
F:\Applications_Software\Python-Micro\esp8266-20230426-v1.20.0.bin
esptool.py v4.5.1
Serial port COM3
Connecting...
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: 18:fe:34:a2:73:66
Stub is already running. No upload is necessary.
Configuring flash size...
Flash will be erased from 0x00000000 to 0x0009afff...
Flash params set to 0x0341
Compressed 634016 bytes to 420365...
Wrote 634016 bytes (420365 compressed) at 0x00000000 in 37.5 seconds
(effective 135.3 kbit/s)...
Hash of data verified.
Leaving...
Hard resetting via RTS pin...
Checking flash memory:
C:\Users\User>esptool.py flash_id
esptool.py v4.5.1
Found 1 serial ports
Serial port COM4
Connecting....
Detecting chip type... Unsupported detection protocol, switching and trying
again...
Connecting...
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: 18:fe:34:a2:73:66
Uploading stub...
Running stub...
Stub running...
Manufacturer: ef
Device: 4016
Detected flash size: 4MB
Hard resetting via RTS pin...
On Thonny IDE, REPL prompt after message (remove GPIO0 short to ground):
*MicroPython v1.20.0 on 2023-04-26; ESP module with ESP8266*
*Type "help()" for more information.*
Hope this helps.
…On Sat, Sep 30, 2023 at 7:56 AM Kevin ***@***.***> wrote:
Model : ESP8266 NodeMcu V3 Auto-detected Flash size: 4MB
Hello, I'm starting to play with microphyton on esp8266, I install
everything from different guides but always the same effect. I used
different versions of microphytin and different ways of uploading the
firmware. The microphyton upload is successful, but Thony, uPyCraft_V1.1,
or PuTTY detect the device on the COM port but behave as if microhyton is
not installed.
Maybe someone faced this problem?
C:\Users\fudit>esptool.py --port COM4 erase_flash
esptool.py v4.5.1
Serial port COM4
Connecting....
Detecting chip type... Unsupported detection protocol, switching and trying again...
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: b4:e6:2d:55:2c:76
Uploading stub...
Running stub...
Stub running...
Erasing flash (this may take a while)...
Chip erase completed successfully in 12.5s
Hard resetting via RTS pin...
C:\Users\fudit>esptool.py --port COM4 write_flash --flash_size=detect -fm dio 0x00000 E:\esp8266-512k-20220618-v1.19.1.b
in
esptool.py v4.5.1
Serial port COM4
Connecting....
Detecting chip type... Unsupported detection protocol, switching and trying again...
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: b4:e6:2d:55:2c:76
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Flash will be erased from 0x00000000 to 0x00078fff...
Flash params set to 0x0240
Compressed 495084 bytes to 331639...
Wrote 495084 bytes (331639 compressed) at 0x00000000 in 29.2 seconds (effective 135.5 kbit/s)...
Hash of data verified.
Leaving...
Hard resetting via RTS pin...
C:\Users\fudit>
Afther that Thonny
Device is busy or does not respond. Your options:
- wait until it completes current work;
- use Ctrl+C to interrupt current work;
- reset the device and try again;
- check connection properties;
- make sure the device has suitable MicroPython / CircuitPython / firmware;
- make sure the device is not in bootloader mode.
I am having the same issue with 3 Espressif ESP8266-01 boards: I can flash
microPython to the boards but in none of the methods of downloading
microPython code modules (Thonny, picocom,ampy and repl) was I able to
download even a small boot.py module. The errors range from error 1 in
Thonny to ampy.pyboard.
PyboardError: ('exception', b'', b'Traceback (most recent call last):\r\n
File "", line 1, in \r\nOSError: [Errno 19] ENODEV\r\n')
The port_diag command I ran at the microPython prompt gave:
import port_diag
FlashROM:
Flash ID: 1460c4 (Vendor: c4 Device: 6014)
Flash bootloader data:
Byte @2 <https://github.com/2>: 00
Byte @3 <https://github.com/3>: 20 (Flash size: 1MB Flash freq: 40MHZ)
Firmware checksum:
size: 634000
md5: 4796b17c5b672462934dd33d0e4a1ce7
True
Networking:
STA ifconfig: ('192.168.1.26', '255.255.255.0', '192.168.1.1',
'192.168.1.1')
AP ifconfig: ('192.168.4.1', '255.255.255.0', '192.168.4.1', '192.168.1.1')
Free WiFi driver buffers of type:
0: 8 (1,2 TX)
1: 0 (4 Mngmt TX(len: 0x41-0x100))
2: 8 (5 Mngmt TX (len: 0-0x40))
3: 4 (7)
4: 7 (8 RX)
lwIP PCBs:
Active PCB states:
Listen PCB states:
TIME-WAIT PCB states:
So this begs the question: does the 8266-01 have enough flash memory to
run microPython code. BTW, if I typed in a few commands, like
from machine import Pin
Pin(2, Pin.OUT).value(1)
Pin(2, Pin.OUT).value(0)
Pin(2, Pin.OUT).value(1)
it worked. Also copying and pasting the contents of my boot.py also worked
but I could not download the file over the serial adapter from my desktop.
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Thanks for all the help. All the preceding worked (but one 8266 seemed to be bad (?), until I got to Thonny and all I can get there is : Process ended with exit code 1. I can execute Python commands at the prompt and even copy, paste and run code but cannot save the modules. Could it be I don't have enough memory on that device? It's only an 8266-01. I am trying to load all the Python code I am currently running on 5 ESP32s but cannot progress beyond this point. I am also trying ampy, ESPHome and Arduino and will try those again. |
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ampy and ESPHome just hang. WIth Arduino, after uploading a simple sketch (WiFi scan) and resetting I get: MicroPython v1.20.0 on 2023-04-26; ESP module with ESP8266 So I will now erase the flash memory and redo that. I successfully created configured ESPHome and uploaded it to the 8266. |
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Hi Kevin.
ESP-01, by default has less than 1MiB flash. We need 1MiB or more to load
Python. I have 2 units of ESP-01 and replaced the flash with 1 MiB. That
works well.
You can buy the flash memory and replace the original ones.
Regards
…On Sun, 1 Oct, 2023, 8:32 pm Kevin, ***@***.***> wrote:
Thanks for all the help. All the preceding worked (but one 8266 seemed to
be bad (?), until I got to Thonny and all I can get there is : Process
ended with exit code 1. I can execute Python commands at the prompt and
even copy, paste and run code but cannot save the modules. Could it be I
don't have enough memory on that device? It's only an 8266-01.
I am trying to load all the Python code I am currently running on 5 ESP32s
but cannot progress beyond this point. I am also trying ampy, ESPHome and
Arduino and will try those again.
—
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or unsubscribe
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As you can see from this, I indeed have 1 Mb flash and is that enough for microPython, which I load with Thonny, and 50k of Python code? It seems strange that I have enough to download 634 kb of microPython and it croaks when I try to store even boot.py, which is under 1 kb. |
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The device now shows up on Home Assistant as an ESPHome device via WiFi. I have not configured any pins or actions yet so I will attack that now, though the 8266 is a much more primitive experience than the ESP32. It would be very convenient to have a breakout board rather than jumpers and a breadboard, but that's an issue for a separate topic. Thanks for your help. |
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The 1M devices should have a file system of about 400k size. I suggest to use mpremote or s simple terminal emulator like Putty for REPL or when trying to run devices. Thonny does quite a few things under the hood, which may fail, and then you do not know whether it is a problem of the device or of Thonny. |
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Robert, thanks. I will proceed with using ESPHome since that is the first and only way I have been able to get more than a microPython prompt. Neither Thonny, REPL nor ampy nor picocom worked for me. |
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Latest update using Thonny: For CH340 NodeMCU v3 ESP8266
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Thank you for the message. Works for me too. |
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Same pain of garbled mess in the Thonny's console, surprising resolution: this GPIO0 pin used to flash the device: in my case, I grounded it for flashing and kept during flashing (used DIO in thonny's esptool flash options). Then physically disconnected. Then connected IO0 to 3.3V via 10k resistor and booted. Got flood of mess in the Thonny's console. I kind of suspect some loop in my case: I have a tiny board, connected UART over one USB>UART board (to ESP, I connect TX,RX and GND from this); also, on another USB port, I have RPi pico and get 3.3V+GND from that. That means 2 USB ports possibly interfering.. |
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Thanks for your information. I gave up on 8266s completely - too much hassle for the small difference in price compared with ESP32s. |
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I need it for its u.FL connector. I use PiPicos normally, but this allows me to connect a higher gain external wifi antenna, that's why: however it is such a pain, indeed... with pico, I just connect usb connector and it works, but this tiny ESP hasn't it. |
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Let me update, how I am able to write firmware to ESP with ease now - for record for anyone interested, hopefully it may prove useful... Either ESP8266 with the onboard wifi antenna, or the one with uFL connector.
Have prolific USB>UART convertor with 5/3.3V support (hopefully all have this), set 3.3V voltage there with a jumper. Connect its gnd, 3.3v and both uarts to ESP's pins Thonny - menu run, config interpreter dialog, select ESP8266 and select COM port. Bottom right in the dialog, button Install micropy over esptool. Next dialog opens. Select COM port, uPy family is ESP8266, variant local file, target address 0x0, install speed 115200, flash mode dio, flash size detect. Checkbox disable stub loader not checked. Bottom right of this dialog - select local file, point to downloaded .bin file. Press install. In my experience - ALL pins must be pulled high and low as described above or else ESP will boot into the messy state in which the console is full of the erratic output, however if wires are correctly set up, it's fine. At this moment, I am able to use ESP as easily and reliably as RP2 that has USB connector onboard and again, I use ESP for wifi and its uFL connector to connect a higher gain wifi antenna, or where physical space is a limitation. Its about 80k of available RAM after uPy boots is a dramatic limitation, indeed. |
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I have written 8266 micropython interpreter with esptool in a Wemos D1 mini It's working with well with esp8266_GENERIC-20220618-v1.19.1.bin But with last version ESP32_GENERIC-20241129-v1.24.1.bin seems not working esp8266 is busy and i got these 3 esptool messages Is it a bug for this version ESP32_GENERIC-20241129-v1.24.1. ? |
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I cannot replicate that behavior with a Wemos D1. Try to start over:
If that still fails, there may be a hardware problem or a problem clean downloading the file. For verification: |
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I have checked md5sum and get also cbb56a027a4892507faae602669c850c |
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The size difference is too large for the version change 1.19.1 to 1.24.1. I'm surprised about the file sizes you mention. Here I have: Did you really get the download images from https://micropython.org/download/ESP8266_GENERIC/ |
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You are right , i had mixed inadvertently 8266 and ESP32 firmware ( ESP32_GENERIC-20241129-v1.24.1.bin) |
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Model : ESP8266 NodeMcu V3
Auto-detected Flash size: 4MB
Hello, I'm starting to play with microphyton on esp8266, I install everything from different guides but always the same effect. I used different versions of microphytin and different ways of uploading the firmware. The microphyton upload is successful, but Thony, uPyCraft_V1.1, or PuTTY detect the device on the COM port but behave as if microhyton is not installed.
Maybe someone faced this problem?
Afther that
Thonny
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