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// -*- verilog -*-
//
// USRP - Universal Software Radio Peripheral
//
// Copyright (C) 2006 Martin Dudok van Heel
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Boston, MA 02110-1301 USA
//
`include "config.vh"
`include "../../common/fpga_regs_common.v"
`include "../../common/fpga_regs_standard.v"
// Clock, enable, and reset controls for whole system
// Modified version to enable multi_usrp synchronisation
module master_control_multi
( input master_clk, input usbclk,
input wire [6:0] serial_addr, input wire [31:0] serial_data, input wire serial_strobe,
input wire rx_slave_sync,
output tx_bus_reset, output rx_bus_reset,
output wire tx_dsp_reset, output wire rx_dsp_reset,
output wire enable_tx, output wire enable_rx,
output wire sync_rx,
output wire [7:0] interp_rate, output wire [7:0] decim_rate,
output tx_sample_strobe, output strobe_interp,
output rx_sample_strobe, output strobe_decim,
input tx_empty,
input wire [15:0] debug_0,input wire [15:0] debug_1,input wire [15:0] debug_2,input wire [15:0] debug_3,
output wire [15:0] reg_0, output wire [15:0] reg_1, output wire [15:0] reg_2, output wire [15:0] reg_3
);
wire [15:0] reg_1_std;
master_control master_control_standard
( .master_clk(master_clk),.usbclk(usbclk),
.serial_addr(serial_addr),.serial_data(serial_data),.serial_strobe(serial_strobe),
.tx_bus_reset(tx_bus_reset),.rx_bus_reset(rx_bus_reset),
.tx_dsp_reset(tx_dsp_reset),.rx_dsp_reset(rx_dsp_reset),
.enable_tx(enable_tx),.enable_rx(enable_rx),
.interp_rate(interp_rate),.decim_rate(decim_rate),
.tx_sample_strobe(tx_sample_strobe),.strobe_interp(strobe_interp),
.rx_sample_strobe(rx_sample_strobe),.strobe_decim(strobe_decim),
.tx_empty(tx_empty),
.debug_0(debug_0),.debug_1(debug_1),
.debug_2(debug_2),.debug_3(debug_3),
.reg_0(reg_0),.reg_1(reg_1_std),.reg_2(reg_2),.reg_3(reg_3) );
// FIXME need a separate reset for all control settings
// Master/slave Controls assignments
wire [7:0] rx_master_slave_controls;
setting_reg_masked #(`FR_RX_MASTER_SLAVE) sr_rx_mstr_slv_ctrl(.clock(master_clk),.reset(1'b0),.strobe(serial_strobe),.addr(serial_addr),.in(serial_data),.out(rx_master_slave_controls));
assign sync_rx = rx_master_slave_controls[`bitnoFR_RX_SYNC] | (rx_master_slave_controls[`bitnoFR_RX_SYNC_SLAVE] & rx_slave_sync);
//sync if we are told by master_control or if we get a hardware slave sync
//TODO There can be a one sample difference between master and slave sync.
// Maybe use a register for sync_rx which uses the (neg or pos) edge of master_clock and/or rx_slave_sync to trigger
// Or even use a seperate sync_rx_out and sync_rx_internal (which lags behind)
//TODO make output pin not hardwired
assign reg_1 ={(rx_master_slave_controls[`bitnoFR_RX_SYNC_MASTER])? sync_rx:reg_1_std[15],reg_1_std[14:0]};
endmodule // master_control
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