source: ResearchApps/PHY/WARPLAB/WARPLab7/Sysgen_Reference/w2/warplab_agc_v3/w2_warplab_agc_init.m

%xlLoadChipScopeData('../wlan_phy_rx/cs_capt/wlan_cs_capt_5.prn'); cs_interp = 1; cs_start = 1;
%payload_vec = [zeros(25,1); complex(ADC_I(cs_start:cs_interp:end), ADC_Q(cs_start:cs_interp:end));];
payload_vec = 0;
raw_rx_I.time = [];
raw_rx_Q.time = [];

DCO_I = 0.05;
DCO_Q = 0;
G_I = 2;
G_Q = 2;

raw_rx_I.signals.values = DCO_I + G_I*real(payload_vec);
raw_rx_Q.signals.values = DCO_Q + G_Q*imag(payload_vec);


PHY_CONFIG_PKT_DET_CORR_THRESH   = 90;
PHY_CONFIG_PKT_DET_ENERGY_THRESH = 14;
PHY_CONFIG_PKT_DET_MIN_DURR      = 4;

%% Register Init
ACG_OVERRIDE                 = 0;


% Timing registers
AGC_TIMING_CAPT_RSSI_1       = 8;
AGC_TIMING_CAPT_RSSI_2       = 24;
AGC_TIMING_CAPT_V_DB         = 48;
AGC_TIMING_START_DCO         = 60;

AGC_TIMING_EN_IIR_FILT       = 93;
AGC_TIMING_DONE              = 95;

AGC_TIMING_RESET_RXHP        = 0;
AGC_TIMING_RESET_G_RF        = 30;
AGC_TIMING_RESET_G_BB        = 25;

% Config register
AGC_G_RF_THRESH_32           = 256-52;           % Reinterpret Fix8_0 to UFix8_0
AGC_G_RF_THRESH_21           = 256-40;           % Reinterpret Fix8_0 to UFix8_0
AGC_RSSI_AVG_LEN_SEL         = 0;
AGC_V_DB_ADJ                 = 64-13;            % Reinterpret Fix6_0 to UFix6_0
AGC_INIT_G_BB                = 24;

% Reset registers
AGC_RESET_TIMEOUT_INIT       = hex2dec('7FFFFFFF');

% Target register
AGC_TARGET_PWR               = 64-15;            % Reinterpret Fix6_0 to UFix6_0

% IIR filt coefficients
DCO_IIR_Coef_A1              = -0.98751192990731429;
DCO_IIR_Coef_B0              =  0.99375596495365714;

% Rx Power - RSSI calib register (-power values in dBm)
RSSI_MIN_PWR_G_RF_3          = 100;
RSSI_MIN_PWR_G_RF_2          = 85;
RSSI_MIN_PWR_G_RF_1          = 70;

REG_AGC_Timing_AGC = ...
    2^0  * AGC_TIMING_CAPT_RSSI_1 + ...          % UFix8_0
    2^8  * AGC_TIMING_CAPT_RSSI_2 + ...          % UFix8_0
    2^16 * AGC_TIMING_CAPT_V_DB   + ...          % UFix8_0
    2^24 * AGC_TIMING_DONE;                      % UFix8_0

REG_AGC_Timing_DCO = ...
    2^0 * AGC_TIMING_START_DCO   + ...           % UFix8_0
    2^8 * AGC_TIMING_EN_IIR_FILT + ...           % UFix8_0
    0;

REG_AGC_Timing_Reset = ...
    2^0  * AGC_TIMING_RESET_RXHP + ...           % UFix8_0
    2^8  * AGC_TIMING_RESET_G_RF + ...           % UFix8_0
    2^16 * AGC_TIMING_RESET_G_BB + ...           % UFix8_0
    0;

REG_AGC_Config = ...
    2^0  * AGC_G_RF_THRESH_32   + ...            % Fix8_0
    2^8  * AGC_G_RF_THRESH_21   + ...            % Fix8_0
    2^16 * AGC_RSSI_AVG_LEN_SEL + ...            % UFix2_0
    2^18 * AGC_V_DB_ADJ         + ...            % Fix6_0
    2^24 * AGC_INIT_G_BB        + ...            % UFix5_0
    0;

REG_AGC_Target               = AGC_TARGET_PWR;

REG_AGC_IIR_Coef_A1          = DCO_IIR_Coef_A1;
REG_AGC_IIR_Coef_B0          = DCO_IIR_Coef_B0;

REG_AGC_RSSI_RX_PWR_CALIB = ...
    2^0  * RSSI_MIN_PWR_G_RF_3 + ...             % UFix8_0
    2^8  * RSSI_MIN_PWR_G_RF_2 + ...             % UFix8_0
    2^16 * RSSI_MIN_PWR_G_RF_1 + ...             % UFix8_0
    0;