zx-iot-mi

ZX-Wespi: ESP32-based Wifi-enabled Fileserver for ZX81 with very simple DIY interfacing circuit

Version Info

0.2.0 Initial pre-release

0.2.1 Improvements:

  - Max WLAN password size incremented from 31 to 64 characters

  - MAC Addr of module shown in SYS menu

0.2.2 Improvements:

  - Free space info in file server

Downloading the firmware to the ESP32 Module

Info for the flash files and initial image download for the ZX-Wespi project:

ZX-Wespi is usually able to do over-the-air (OTA) updates via the webserver user interface.

However, for the following cases a regular download of the flash image is required:

• When initially setting up a brand new ESP32 for your Zeddy
• If something went really wrong during OTA
• If you want to reuse an ESP32 that was used in a different project

This short instruction is for using the ESP32 download tool (tested with V3.8.5)

• Connect ESP32 to computer via USB or COM as applicable

• Get the download tool, at time of writing available at https://www.espressif.com/en/support/download/other-tools, choose flash_download_tool_v3.8.5 or higher

• Run the tool, go to "Developer Mode", "ESP32", choose "SPI download" tab

• Set up the following files and positions to flash:

  partition-table.bin @ 0x8000 ota_data_initial.bin @ 0xd000 bootloader.bin @ 0x1000 zx_iot.bin @ 0x10000

• For the rest of parameters, use:

  SPI SPEED 40MHz SPI MODE DIO FLSH SIZE 32MBit (=4MB) COM: (need to find out, look up in your OS' device manager in case of doubt) BAUD: 460800 (may pick a different baud rate)

• Press start to flash. If the ESP32 does not connect automatically, try holding the BOOT knob and/or EN(reset)

Instruction v1.1