Subversion Repositories iso7816_3_master

/*

Author: Sebastien Riou (acapola)

Creation date: 22:22:43 01/10/2011

$LastChangedDate: 2011-04-17 23:31:29 +0200 (Sun, 17 Apr 2011) $

$LastChangedBy: acapola $

$LastChangedRevision: 19 $

$HeadURL: file:///svn/iso7816_3_master/iso7816_3_master/trunk/test/DummyCard.v $

This file is under the BSD licence:

Copyright (c) 2011, Sebastien Riou

All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

The names of contributors may not be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR

CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

`default_nettype none

module DummyCard(

        input wire isoReset,

        input wire isoClk,

        input wire isoVdd,

        inout wire isoSio

        );

        // Inputs

        wire [0:0] clkPerCycle=0;

        reg [7:0] dataIn;

        reg nWeDataIn;

        reg nCsDataOut;

        reg nCsStatusOut;

        // Outputs

        wire [7:0] uart_dataOut;

        wire [7:0] statusOut;

        wire serialOut;

        reg [12:0] cyclesPerEtu;

        wire cardIsoClk;//card use its own generated clock (like true UARTs)

reg useIndirectConventionConfig;//can be changed by commands

reg useIndirectConvention;

wire stopBit2=1'b1;//0: 1 stop bit, 1: 2 stop bits 

wire msbFirst = useIndirectConvention;//if 1, bits order is: startBit, b7, b6, b5...b0, parity

wire oddParity = 1'b0;//if 1, parity bit is such that data+parity have an odd number of 1

wire sioHighValue = ~useIndirectConvention;//apply only to data bits

wire [7:0] uart_dataIn = sioHighValue ? dataIn : ~dataIn;

wire [7:0] dataOut = sioHighValue ? uart_dataOut : ~uart_dataOut;

        HalfDuplexUartIf uartIf (

                .nReset(isoReset),

                .clk(isoClk),

                .clkPerCycle(clkPerCycle),

                .dataIn(uart_dataIn),

                .nWeDataIn(nWeDataIn),

                .clocksPerBit(cyclesPerEtu),

                .stopBit2(stopBit2),

                .oddParity(oddParity),

      .msbFirst(msbFirst),

           .dataOut(uart_dataOut),

                .nCsDataOut(nCsDataOut),

                .statusOut(statusOut),

                .nCsStatusOut(nCsStatusOut),

                .serialIn(isoSio),

                .serialOut(serialOut),

                .comClk(cardIsoClk)

        );

reg sendAtr;

reg [8:0] tsCnt;//counter to start ATR 400 cycles after reset release

reg [7:0] buffer[256+5:0];

localparam CLA_I= 8*4;

localparam INS_I= 8*3;

localparam P1_I = 8*2;

localparam P2_I = 8*1;

localparam P3_I = 0;

reg [CLA_I+7:0] tpduHeader;

wire COM_statusOut=statusOut;

wire COM_clk=isoClk;

integer COM_errorCnt;

wire txRun,txPending, rxRun, rxStartBit, isTx, overrunErrorFlag, frameErrorFlag, bufferFull;

assign {txRun, txPending, rxRun, rxStartBit, isTx, overrunErrorFlag, frameErrorFlag, bufferFull} = statusOut;

`include "ComDriverTasks.v"

assign isoSio = isTx ? serialOut : 1'bz;

/*T=0 card model

ATR:

        3B/3F 90 97 40 20

        3B/3F 94 97 80 1F 42 BA BE BA BE

        3B 9E 96 80 1F C7 80 31 E0 73 FE 21 1B 66 D0 00 28 24 01 00 0D

Implemented commands:

        write buffer:

                tpdu: 00 0C 00 00 LC data

                sw:   90 00

        read buffer:

                tpdu: 00 0A 00 00 LE

                response: data

                sw:   90 00

        toggle communication convention (take effect at next reset):

                tpdu 00 FC 00 00 00

                sw:     90 00

        any other:

                sw:   69 86

*/

task sendAckByte;

        sendByte(tpduHeader[INS_I+7:INS_I]);

endtask

task writeBufferCmd;

integer i;

begin

        sendAckByte;

        for(i=0;i<tpduHeader[P3_I+7:P3_I];i=i+1) begin

                receiveByte(buffer[i]);

        end

        sendHexBytes("9000");//sendWord(16'h9000);

end

endtask

task readBufferCmd;

integer i;

integer le;

begin

        sendAckByte;

        le=tpduHeader[P3_I+7:P3_I];

        if(0==le) le=256;

        for(i=0;i<le;i=i+1) begin

                sendByte(buffer[i]);

        end

        sendHexBytes("9000");//sendWord(16'h9000);

end

endtask

task toggleConventionCmd;

integer i;

begin

        useIndirectConventionConfig=~useIndirectConventionConfig;

        sendHexBytes("9000");//sendWord(16'h9000);

end

endtask

//stuff which can be changed by command and affect ATR

always @(posedge isoVdd) begin

        useIndirectConventionConfig<=1'b0;

end

integer i;

always @(posedge isoClk, negedge isoReset) begin

        if(~isoReset) begin

                nWeDataIn<=1'b1;

                nCsDataOut<=1'b1;

                nCsStatusOut<=1'b1;

                tsCnt<=9'b0;

                sendAtr<=1'b1;

                cyclesPerEtu <= 13'd372-1'b1;

                useIndirectConvention<=useIndirectConventionConfig;

        end else if(tsCnt!=9'd400) begin

                tsCnt <= tsCnt + 1'b1;

        end else if(sendAtr) begin

                sendAtr<=1'b0;

                //sendHexBytes("3B00");

                if(useIndirectConvention)

                        sendHexBytes("3F");

                else

                        sendHexBytes("3B");

                        sendHexBytes("90974020");

                //sendHexBytes("9497801F42BABEBABE");

                //sendHexBytes("9E 97 80 1F C7 80 31 E0 73 FE 21 1B 66 D0 00 28 24 01 00 0D");

                //sendHexBytes("9E 97 80 1F C7 80 31 E0 73 FE 21 1B 66 D0 00 28 24 01 00 ");

                waitEndOfTx;

        end else begin

                //get CLA

                receiveByte(tpduHeader[CLA_I+:8]);

                //get INS~P2 or PPS

                for(i=1;i<4;i=i+1)

                        receiveByte(tpduHeader[(CLA_I-(i*8))+:8]);

                if(8'hFF==tpduHeader[CLA_I+:8]) begin

                        //support only PPS8 for the time being

                        if(32'hFF109778==tpduHeader[7+CLA_I:P2_I]) begin

                                sendHexBytes("FF109778");

                                waitEndOfTx;

                                cyclesPerEtu <= 13'd8-1'b1;

                        end

                end else begin

                        //tpdu: get P3

                        receiveByte(tpduHeader[P3_I+:8]);

                        //dispatch

                        case(tpduHeader[7+CLA_I:P2_I])

                                        32'h000C0000: writeBufferCmd;

                                        32'h000A0000: readBufferCmd;

                                        32'h00FC0000: toggleConventionCmd;

                                        default: sendHexBytes("6986");

                        endcase

                end

        end

end

endmodule

`default_nettype wire