ESP32 set instructions give address overlap

[Mike Karliner]

Following instructions leads to address overlap error.

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esptool.py -b 921600 write_flash 0x1000 bootloader_dio_40m.bin 0x8000 partitions.bin 0xe000 boot_app0.bin
usage: esptool write_flash [-h] [--erase-all]
[--flash_freq {keep,40m,26m,20m,80m}]
[--flash_mode {keep,qio,qout,dio,dout}]
[--flash_size FLASH_SIZE]
[--spi-connection SPI_CONNECTION] [--no-progress]
[--verify] [--compress | --no-compress]
<address> <filename> [<address> <filename> ...]
esptool write_flash: error: argument <address> <filename>: Detected overlap at address: 0x8000 for file: partitions.bin

[John Maloney]

Sorry you’re having this problem. Unfortunately, I can’t reproduce it.

Make sure you’ve got the correct files:

boot_app0.bin, 8192 bytes
bootloader_dio_40m.bin, 16848 bytes
partitions.bin, 3072 bytes

Those files can be downloaded from:

https://bitbucket.org/john_maloney/smallvm/src/master/esp32/

What ESP32 board are you using?

What version of esptool.py? You can find out by running:

esptool.py version

I have version 2.7 which might not be the latest.

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[John Maloney]

It turns out that many ESP boards do not work reliably at 921600 baud. My apologies that our install instructions suggested that speed. A fairly reliable speed is 230400 baud or, if that fails, 115200.

However, you may not need to use esptool.py at all.

The latest version of MicroBlocks (0.6.4) has a built-in installer for MicroBlocks firmware on many ESP32 and ESP8266 boards. Just plug in your board and select “update firmware on board” from the MicroBlocks (gear) menu, and select your board from the menu. For example, if you have a generic ESP32 board, select ESP32.

Let me know if you’re still having problems and I’ll look into it.