Hi TI
I have a problem understanding if I'm correctly using the FREQOFF_EST register.
I'm developing a small system composed by a central unit (that mounts CC1120) connected with some peripheral units with unknow radio.
I'd like to measure (in the central unit), when any packet is received, the relative offset between the received packet and "my" operative frequency and use this information to tell to the peripheral device which sends the packet to add or decrease its offset to keep the communication range whithin a maximum range of +-2kHz.
My system works in 2FSK, 19.2kbps, 50kHz RX-BW filter.
Is it possible to use the FREQOFF_EST value to perform this measure?
This question is because I've tryed to use a TrxEB+CC1120 as transmitter and changing the Carrier Frequency with 1kHz step and I've observed an absolutely non-linear result in FREQOFF_EST value.
I don't want to use the AFC because i don't want (at now) compensate the central node carrier frequency, just use it to measure the peripheral "deviation" from the central carrier.
Thanks and best regards!
Mat