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Adding edge specific pulse generators

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Andreas Olofsson 2016-03-10 11:05:36 -05:00
parent f60f3515e6
commit d129b93040
2 changed files with 120 additions and 0 deletions
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60
common/hdl/oh_fall2pulse.v Normal file
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//#############################################################################
//# Function: Converts a falling edge to a single cycle pulse #
//#############################################################################
//# Author: Andreas Olofsson #
//# License: MIT (see below) #
//#############################################################################
module oh_fall2pulse(/*AUTOARG*/
// Outputs
out,
// Inputs
clk, in
);
//########################################
//# INTERFACE
//########################################
parameter DW = 1; // width of data inputs
input clk; // clock
input [DW-1:0] in; // edge input
output [DW-1:0] out; // one cycle pulse
//########################################
//# BODY
//########################################
reg [DW-1:0] in_reg;
always @ (posedge clk)
in_reg[DW-1:0] <= in[DW-1:0] ;
assign out[DW-1:0] = ~in[DW-1:0] & in_reg[DW-1:0] ;
endmodule // oh_edge2pulse
//////////////////////////////////////////////////////////////////////////////
// The MIT License (MIT) //
// //
// Copyright (c) 2015-2016, Adapteva, Inc. //
// //
// Permission is hereby granted, free of charge, to any person obtaining a //
// copy of this software and associated documentation files (the "Software")//
// to deal in the Software without restriction, including without limitation//
// the rights to use, copy, modify, merge, publish, distribute, sublicense, //
// and/or sell copies of the Software, and to permit persons to whom the //
// Software is furnished to do so, subject to the following conditions: //
// //
// The above copyright notice and this permission notice shall be included //
// in all copies or substantial portions of the Software. //
// //
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS //
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF //
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. //
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY //
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT//
// OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR //
// THE USE OR OTHER DEALINGS IN THE SOFTWARE. //
// //
//////////////////////////////////////////////////////////////////////////////

60
common/hdl/oh_rise2pulse.v Normal file
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//#############################################################################
//# Function: Converts a rising edge to a single cycle pulse #
//#############################################################################
//# Author: Andreas Olofsson #
//# License: MIT (see below) #
//#############################################################################
module oh_rise2pulse(/*AUTOARG*/
// Outputs
out,
// Inputs
clk, in
);
//########################################
//# INTERFACE
//########################################
parameter DW = 1; // width of data inputs
input clk; // clock
input [DW-1:0] in; // edge input
output [DW-1:0] out; // one cycle pulse
//########################################
//# BODY
//########################################
reg [DW-1:0] in_reg;
always @ (posedge clk)
in_reg[DW-1:0] <= in[DW-1:0] ;
assign out[DW-1:0] = in[DW-1:0] & ~in_reg[DW-1:0] ;
endmodule // oh_edge2pulse
//////////////////////////////////////////////////////////////////////////////
// The MIT License (MIT) //
// //
// Copyright (c) 2015-2016, Adapteva, Inc. //
// //
// Permission is hereby granted, free of charge, to any person obtaining a //
// copy of this software and associated documentation files (the "Software")//
// to deal in the Software without restriction, including without limitation//
// the rights to use, copy, modify, merge, publish, distribute, sublicense, //
// and/or sell copies of the Software, and to permit persons to whom the //
// Software is furnished to do so, subject to the following conditions: //
// //
// The above copyright notice and this permission notice shall be included //
// in all copies or substantial portions of the Software. //
// //
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS //
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF //
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. //
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY //
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT//
// OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR //
// THE USE OR OTHER DEALINGS IN THE SOFTWARE. //
// //
//////////////////////////////////////////////////////////////////////////////