I tried to read the CIR data (rigester 0x25). Tag and anchor are working on SS module, and the software is the ranging demo supplying by official. While the value is always equal 0, and the distance information is right.
Can anyone explain or share any documents related to accumulation of preamble symbols to estimate CIR ?
My TX/RX configuration is as below. the result plot is attached !
5, /* Channel number. /
DWT_PRF_64M, / Pulse repetition frequency. /
DWT_PLEN_128, / Preamble length. Used in TX only. /
DWT_PAC8, / Preamble acquisition chunk size. Used in RX only. /
10, / TX preamble code. Used in TX only. /
10, / RX preamble code. Used in RX only. /
0, / 0 to use standard SFD, 1 to use non-standard SFD. /
DWT_BR_6M8, / Data rate. /
DWT_PHRMODE_STD, / PHY header mode. /
(129 + 8 - 8) / SFD timeout (preamble length + 1 + SFD length - PAC size). Used in RX only. */