JPep

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• Maximum length of BT service characteristic value

  @JPep started

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  @JPep replied
• Maximum length of BT service characteristic value

  in ESP32 • 5 years, 11 months

  

  Ah, that explains it. That's a pity... Thanks for the info!

• Maximum length of BT service characteristic value

  in ESP32 • 5 years, 11 months

  

  I'm trying to put more than 22 characters into a bluetooth service characteristic value. I can see from targets/esp32/BLE/esp32_gatts_func.h that the maximum value is defined as 22 however this value is never referred to again in code (at least I can't see where it is). When I try to fit a string of more than 22 characters it repeats 22 characters of the longer value.

  Anyone had any luck presenting a value longer than 22 characters?

  I'm using the Device Name org.bluetooth.characteristic.gap.device_name 0x2A00 characteristic with code something like:

  -- snip
  
  0x2A00 : {	
  	value: "123456789abcdefghijklmnopqrstuvwxyz",
  	maxLen : 127,  //this has no effect
  	readable : true, 
  	description: "123456789abcdefghijklmnopqrstuvwxyz"
  }
  
  -- snip
  

  p.s. Loving Espruino, it's fantastic. Keep up the excellent work.