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DirkH
Associate II
May 12, 2026
Solved

Non standard preamble on STM32WL33

  • May 12, 2026
  • 1 reply
  • 92 views

I need to implement a protocol using 11110000 as preamble. The protocol is 2-FSK 868.1 MHz, +/-35kHz, 25kbps. According to RM0511 STM32WL33 only supports 01010101 or 10101010 as preamble for 2-FSK. Is it feasible to use the STM32WL33? I am planning to use direct buffer mode.

Best answer by Filippo_Malleo

Hi DirkH, 

yes, you can use the Direct through buffer mode, so you can implement your protocol bypassing any packet handler constraint.

BR,
Filippo

1 reply

F
Filippo_MalleoAnswer
Technical Moderator
May 12, 2026

Hi DirkH, 

yes, you can use the Direct through buffer mode, so you can implement your protocol bypassing any packet handler constraint.

BR,
Filippo

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