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Troubleshooting usage

Boris Kröger edited this page 2023-10-22 21:33:01 +02:00

Table of Contents

• Troubleshooting Usage
• Display Content of Tag not updating
• Situation
• Solution
• Accidentally flashing AP Firmware onto Tag
• Situation
• Solution
• Tag is not working after Battery Change
• Situation
• Solution
• Custom Access Point Name for Wifi
• Situation
• Solution

Troubleshooting Usage

Display Content of Tag not updating

Situation

• The image gets updated at the AP, but doesn't show on the tag display
  • Image in AP is different from what is shown on tag display
• The tag is still connected to the AP and checks in
• The AP log shows the following lines

14:56:11 < 00000218C9073B10 reports xfer complete
14:56:10 new image: /current/00000218C9073B10.pending
14:56:10 Updating 00000218C9073B10
14:56:09 Ok, done

• Usually, there would be multiple such lines between new image and xfer complete:

15:10:20 < Block Request received for file /current/00000218A8743B13.pending block 1, len 640 checksum 33468
15:10:19 < Block Request received for file /current/00000218A8743B13.pending block 0, len 4096 checksum 49644

Solution

Try the following steps.

1. Reboot the tag via the AP
   • right click tag and choose Reboot tag
2. Configure the tag to show something different to get it going
   • example: current date
3. Perform an OTA firmware update of the tag from the AP
   • see Firmware Updates

Accidentally flashing AP Firmware onto Tag

Situation

• Accidentally the AP firmware (AP_FW_xx.yy.bin) was flashed onto a tag via OTA
• The tag display shows AP Mode

Solution

• Unfortunately, the only way to get a tag firmware (Tag_FW_xx.yy.bin) onto the tag is flashing via the tag contacts
  • The required jig depends on the tag
  • More information on Tag Flasher

Tag is not working after Battery Change

Situation

• Batteries of a tag were replaced, but tag is not starting (e.g. showing the previous display content)
• Even shorting the battery contacts won't help

Solution

• Try to insert the batteries all in one
  • see Getting started - Battery insert
  • at 12:25 min of ESP32 controlled E-Paper price tags The OpenEPaperLink startup guide

Custom Access Point Name for Wifi

Situation

• OpenEPaperLink AP lists itself on the wifi as "OpenEPaperLink-xyz".
• Plan is to have a custom name for it.

Solution

• Navigate to the AP settings (gear icon)
• Change Alias unter Access Point config to desired name e.g., epaperap (shorter)
• Reboot AP