mirror of
git://projects.qi-hardware.com/nn-usb-fpga.git
synced 2025-01-06 04:40:15 +02:00
a7c692d3f0
Adding FPGA sram hdl code and user space code Fixing some errors: LCD's pinout connector is swapped FPGA TDI SIGNAL must be routed to another pin (C14), right now is DQMH Remove R11 Check JZ4725 symbol's component (PORTD is wrong) Adding PB2 and PB3 wiring ADC's vref to external connector Adding power LED Adding CPU Led
75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
/* JTAG routines
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Copyright (C) 2004 Andrew Rogers
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#ifndef JTAG_H
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#define JTAG_H
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#include <vector>
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#include <stdio.h>
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#include "iobase.h"
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typedef unsigned char byte;
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class Jtag
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{
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private:
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static const int MAXNUMDEVICES=1000;
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protected:
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struct chainParam_t
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{
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unsigned long idcode; // Store IDCODE
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//byte bypass[4]; // The bypass instruction. Most instruction register lengths are a lot less than 32 bits.
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int irlen; // instruction register length.
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};
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std::vector<chainParam_t> devices;
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IOBase *io;
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int numDevices;
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IOBase::tapState_t postDRState;
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IOBase::tapState_t postIRState;
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int deviceIndex;
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FILE *logfile;
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bool shiftDRincomplete;
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public:
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Jtag(IOBase *iob);
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int getChain(); // Shift IDCODEs from devices
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inline void setPostDRState(IOBase::tapState_t s){postDRState=s;}
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inline void setPostIRState(IOBase::tapState_t s){postIRState=s;}
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int setDeviceIRLength(int dev, int len);
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unsigned long getDeviceID(int dev){
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if(dev>=devices.size())return 0;
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return devices[dev].idcode;
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}
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int selectDevice(int dev);
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void shiftDR(const byte *tdi, byte *tdo, int length, int align=0, bool exit=true);// Some devices use TCK for aligning data, for example, Xilinx FPGAs for configuration data.
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void shiftIR(const byte *tdi, byte *tdo=0); // No length argumant required as IR length specified in chainParam_t
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inline void longToByteArray(unsigned long l, byte *b){
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b[0]=(byte)(l&0xff);
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b[1]=(byte)((l>>8)&0xff);
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b[2]=(byte)((l>>16)&0xff);
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b[3]=(byte)((l>>24)&0xff);
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}
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inline unsigned long byteArrayToLong(byte *b){
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return (b[3]<<24)+(b[2]<<16)+(b[1]<<8)+b[0];
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}
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};
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#endif //JTAG_H
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