Other Parts Discussed in Thread: CC2564
Hi to all
I use cc2564c for HFP audio application (custom hardware design and modified version of HFPDemo_HF, patch v1.5, Bluetopia 4.2.1.1, ARM cortexM)
audio quality is good (not perfect) for near range (< 1meter) but after moving remote device (smart phone) to more far range, RRSI decreased and AVPR report bad packet (~5%) and audio distorted.
in some case (sharp RSSI decrease) CC2564 send LMP_power_control_req to phone and request increase power but when RSSI decrees slowly cc2564 don't send LMP_power_control_req when RSSI lower than golden range.
cc2564 respond to LMP request from remote device correctly but don't send request properly
at first step, I try to use LMP power control to get maximum power of remote device (smart phone)
according to datasheet, cc2564c's minimum sensitivity is about -90dbm can you please help me resolve bad packet, especially on low RSSI
Logger file attached.
Thanks