MicroPython
Using pyboard.py #9484
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I have an ESP32 board connected by USB. python pyboard.py -hI do get the expected output. But if I execute the example to copy from local main.py to the micropython board main.py: python pyboard.py --device /dev/ttyACM0 -f cp main.py :I get the following output: During handling of the above exception, another exception occurred: Traceback (most recent call last): I am a member of the dialout group, so I don't think permissions to /dev/ttyACM0 is the issue. Any other suggestions? Regards |
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Replies: 8 comments 19 replies
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Did you install pyserial.py? I see serial.py in the logs. |
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yes I pyserial installed |
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An ESP32 is very unlikely to be /dev/ttyACM0 and more likely /dev/ttyUSB0 Suggest using mpremote instead, which can auto-detect available ports. |
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ttyACM devices correspond to a CDC ACM class device (typical for when the chip itself implements the USB stack, e.g. stm32, rp2040) and ttyUSB are typically standalone UART to USB adaptors (such as FTDI) used on boards where the primary chip doesn't have USB support, e.g. esp32. |
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Thanks for making me aware of mpremote. I installed an ran mpremote without arguments. Output follows: Connected to MicroPython at /dev/ttyACM0 |
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Some ESP32C3 models appear on /dev/ttyACM0. e.g. Seeed XIAO esp32c3. |
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My board is ESP32-S3-DevKitM-1 v1.0. It has the Espressif logo, so I think the are the manufacturer |
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Again, up to my first question: which serial package did you install? pyboard.py and mpremote require |
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Here is output of 'pip freeze': So pyserial 3.5 appears to be installed correctly. |
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Do you get a REPL prompt when connecting with a terminal emulator like picocom or screen? |
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I have screen installed, but I'm not experienced using it. When I type screen, with no argument, it seems to drop me out of my virtual environment with no other output. It does not appear that the REPL starts |
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Which firmware did you load? |
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GENERIC_S3-20220117-v1.18.bin |
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I see that the ESP32-S3-DevKitM-1 v1.0 has two USB ports. One of them is connected to the USB/UART bridge. That one should show up at /dev/ttyUSB0. Try that one. |
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The module is the esp-s3-mini-1. According to the Espressif website, this module has 8MB |
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Oh actually the datasheet says up to 8MB quad SPI flash. So I suppose I could have less -- I don't see any additional markings on the module to know which one I have. |
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There should be a short string next to the vent opening of the ESP32 module on the board. It should read E1N8 for the 8MB board, and End in N4 for the 4 MB board. But according to the espressif documentation, all boards should have 8MB flash. |
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I was able to establish communication with my S3 board. And it is 8MB, which I found by calling esp.flash_size(). |
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Good. |
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Thanks for the help, Robert. Just adding the conclusion here so I can mark it as 'answered'. |
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Thanks for the help, Robert. Just adding the conclusion here so I can mark it as 'answered'.
I was able to establish communication with my S3 board. And it is 8MB, which I found by calling esp.flash_size().
I think I may not have flashed from memory location 0. The earlier esp boards are flashed starting at location 0x1000, where as the S3 should be flashed from location 0x0.