Production Programming

Programming Adapter

You need a suitable programming adapter, see our programming hardware page.

Download the Espressif Windows software

Download and install "Flash Download Tools (ESP8266 & ESP32)" from: https://www.espressif.com/en/products/hardware/esp32/resources

Programming Instructions

Run the flash download tool "flash_download_tools_v3.6.5.exe"

Select "ESP32 Download Tool"

Select the "SPI Download" tab

Select the 3 files to program with, enter their start addresses and tick the checkboxes next to each

Crystal Freq: (40m for WROOM-32)

SPI Speed: (get from build information)

SPI Mode: (get from build information)

Flash size: (get from build information)

SpiAutoSet = Not set
DoNotChgBin = CHecked

Select the COM port your programming adapter is connected to.

Set the "BAUD" rate: (get from build information, 921600 typically fine)

Press "START". The programming progress bar should complete.

When "FINISH" is displayed press "STOP"

Reset your board and it should run.

How to get the settings to use for your project

Build your project in eclipse and then look for the following sections in the output window:

Chip is ESP32D0WDQ6 (revision 1)

This is the espressif chip you're using

Auto-detected Flash size: 4MB

This is the "Flash sise", x8 for Mbits so 4MB = 32Mbits

python /home/adam/esp/esp-idf/components/esptool_py/esptool/esptool.py –chip esp32 –port "COM63" –baud 921600 –before "default_reset" –after "hard_reset" write_flash -z –flash_mode "dio" –flash_freq "40m" –flash_size detect 0x1000 /home/adam/esp/MyProject/build/bootloader/bootloader.bin 0x10000 /home/adam/esp/MyProject/build/my_project.bin 0x8000 /home/adam/esp/MyProject/build/partitions_singleapp.bin

From this you get the following programming settings:
baud 921600

The "BAUD" you can program at

flash_freq "40m"

The "SPI SPEED" to use

flash_mode "dio"

The "SPI MODE" to use

0x1000 /home/adam/esp/RocketFibreReceiver/build/bootloader/bootloader.bin

The start address and file location of the bootloader file to use

0x10000 /home/adam/esp/RocketFibreReceiver/build/my_project.bin

The start address and file location of the main project file to use (will be named differently for your project)

0x8000 /home/adam/esp/RocketFibreReceiver/build/partitions_singleapp.bin

The start address and file location of the partitions file to use

Programming a WROOM-32 example

USEFUL?

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