mirror of
git://projects.qi-hardware.com/nn-usb-fpga.git
synced 2025-01-08 15:20:15 +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
144 lines
2.9 KiB
C++
144 lines
2.9 KiB
C++
/* Xilinx .bit file parser
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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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#include "bitfile.h"
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using namespace std;
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BitFile::BitFile()
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{
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Error=false;
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logfile=stderr;
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initFlip();
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buffer=0;
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length=0;
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}
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unsigned long BitFile::load(const char *fname)
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{
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FILE *fp=fopen(fname,"rb");
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if(fp==0){
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string err="Cannot open file '";
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err+=fname;
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err+="'";
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error(err);
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return 0;
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}
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filename=fname;
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// Parse the header
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char hdr[13];
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fread(hdr,1,13,fp); // 13 byte header
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char key;
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do{
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fread(&key,1,1,fp);
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if(key=='a')readField(ncdFilename,fp);
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if(key=='b')readField(partName,fp);
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if(key=='c')readField(date,fp);
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if(key=='d')readField(time,fp);
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}while(key!='e'&&!feof(fp));
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if(key=='e')processData(fp); // This is the data
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else{
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error("Unexpected end of file");
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fclose(fp);
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return 0;
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}
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fclose(fp);
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return getLength();
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}
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void BitFile::processData(FILE *fp)
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{
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byte t[4];
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fread(t,1,4,fp);
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length=(t[0]<<24)+(t[1]<<16)+(t[2]<<8)+t[3];
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if(buffer) delete [] buffer;
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buffer=new byte[length];
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for(int i=0; i<length&&!feof(fp); i++){
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byte b;
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fread(&b,1,1,fp);
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buffer[i]=bitRevTable[b]; // Reverse the bit order.
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}
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if(feof(fp)){
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error("Unexpected end of file");
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length=0;
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}
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fread(t,1,1,fp);
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if(!feof(fp))error("Ignoring extra data at end of file");
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}
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unsigned long BitFile::saveAsBin(const char *fname)
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{
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if(length<=0)return length;
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FILE *fptr=fopen(fname,"wb");
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if(fptr==0){
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string err="Cannot open file'";
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err+=fname;
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err+="'";
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error(err);
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return 0;
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}
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for(int i=0; i<length; i++){
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byte b=bitRevTable[buffer[i]]; // Reverse bit order
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fwrite(&b,1,1,fptr);
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}
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fclose(fptr);
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return length;
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}
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void BitFile::error(const string &str)
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{
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errorStr=str;
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Error=true;
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fprintf(logfile,"%s\n",str.c_str());
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}
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void BitFile::readField(string &field, FILE *fp)
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{
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byte t[2];
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fread(t,1,2,fp);
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unsigned short len=(t[0]<<8)+t[1];
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for(int i=0; i<len; i++){
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byte b;
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fread(&b,1,1,fp);
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field+=(char)b;
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}
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}
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void BitFile::initFlip()
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{
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for(int i=0; i<256; i++){
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int num=i;
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int fnum=0;
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for(int k=0; k<8; k++){
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int bit=num&1;
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num=num>>1;
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fnum=(fnum<<1)+bit;
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}
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bitRevTable[i]=fnum;
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}
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}
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BitFile::~BitFile()
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{
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if(buffer) delete [] buffer;
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}
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