Hello,
I want to know the sniff mode method that use longer preamble than 30byte with CC1120.
As the RX sniff mode HELP of SmartRF Studio7,
The Preamble length can be changed but a initial value is set when a typical setting is selected. The given value is validated and an error message will be given if invalid. If the transmitter is controlled by SmartRF Studio, the preamble length must be set in the register PREAMBLE_CFG1::num_preamble. In order to achieve no packet loss the preamble length configuration in the sniff mode panel must match number of preamble bytes sent by the transmitter. Maximum preamble that can be set using the packet engine is 30bytes (num_preamble). To generate a longer preamble, one can disable the sync word, use fixed packet length, disable CRC and fill up the FIFO with preamble bytes. This enables another 128 bytes. For even longer preambles one can strobe TX with an empty FIFO. The chip will then send preamble until data is entered into the FIFO.
I don't know exaclty the meaning of 'To generate a longer preamble, one can disable the sync word, use fixed packet length, disable CRC and fill up the FIFO with preamble bytes. This enables another 128 bytes. For even longer preambles one can strobe TX with an empty FIFO. The chip will then send preamble until data is entered into the FIFO.'
Please let me know example resister setting value or method using the longer preamble(>30bytes) .
Thansk.
