mirror of https://github.com/akuker/RASCSI.git
148 lines
6.0 KiB
C++
148 lines
6.0 KiB
C++
//---------------------------------------------------------------------------
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//
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// SCSI Target Emulator PiSCSI
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// for Raspberry Pi
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//
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// Copyright (C) 2020-2021 akuker
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//
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// [ SCSI Bus Monitor ]
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//
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//---------------------------------------------------------------------------
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#include "hal/data_sample.h"
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#include "hal/gpiobus.h"
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#include "shared/log.h"
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#include "sm_core.h"
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#include "sm_reports.h"
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#include <fstream>
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#include <iostream>
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#include <sstream>
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using namespace std;
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//---------------------------------------------------------------------------
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//
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// Constant declarations
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//
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//---------------------------------------------------------------------------
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// Symbol definition for the VCD file
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// These are just arbitrary symbols. They can be anything allowed by the VCD file format,
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// as long as they're consistently used.
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const char SYMBOL_PIN_DAT = '#';
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const char SYMBOL_PIN_ATN = '+';
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const char SYMBOL_PIN_RST = '$';
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const char SYMBOL_PIN_ACK = '%';
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const char SYMBOL_PIN_REQ = '^';
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const char SYMBOL_PIN_MSG = '&';
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const char SYMBOL_PIN_CD = '*';
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const char SYMBOL_PIN_IO = '(';
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const char SYMBOL_PIN_BSY = ')';
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const char SYMBOL_PIN_SEL = '-';
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const char SYMBOL_PIN_PHASE = '=';
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// We'll use position 0 in the prev_value array to store the previous phase
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const int PIN_PHASE = 0;
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//---------------------------------------------------------------------------
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//
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// Variable declarations
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//
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//---------------------------------------------------------------------------
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static array<uint8_t,32> prev_value = {0xFF};
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static void vcd_output_if_changed_phase(ofstream &fp, phase_t data, int pin, char symbol)
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{
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if (prev_value[pin] != static_cast<uint8_t>(data)) {
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prev_value[pin] = static_cast<uint8_t>(data);
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fp << "s" << BUS::GetPhaseStrRaw(data) << " " << symbol << endl;
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}
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}
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static void vcd_output_if_changed_bool(ofstream &fp, bool data, int pin, char symbol)
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{
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if (prev_value[pin] != data) {
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prev_value[pin] = data;
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fp << data << symbol << endl;
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}
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}
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static void vcd_output_if_changed_byte(ofstream &fp, uint8_t data, int pin, char symbol)
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{
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if (prev_value[pin] != data) {
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prev_value[pin] = data;
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fp << "b" << fmt::format("{0:8b}", data) << " " << symbol << endl;
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}
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}
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void scsimon_generate_value_change_dump(const string &filename, const vector<shared_ptr<DataSample>> &data_capture_array)
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{
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LOGTRACE("Creating Value Change Dump file (%s)", filename.c_str())
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ofstream vcd_ofstream;
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vcd_ofstream.open(filename.c_str(), ios::out);
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// Get the current time
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time_t rawtime;
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time(&rawtime);
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struct tm timeinfo;
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localtime_r(&rawtime, &timeinfo);
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string timestamp;
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timestamp.resize(256);
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strftime(×tamp[0], timestamp.size(), "%d-%m-%Y %H-%M-%S", &timeinfo);
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vcd_ofstream << "$date" << endl
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<< timestamp << endl
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<< "$end" << endl
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<< "$version" << endl
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<< " VCD generator tool version info text." << endl
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<< "$end" << endl
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<< "$comment" << endl
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<< " Tool build date:" << __TIMESTAMP__ << endl
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<< "$end" << endl
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<< "$timescale 1 ns $end" << endl
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<< "$scope module logic $end" << endl
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<< "$var wire 1 " << SYMBOL_PIN_BSY << " BSY $end" << endl
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<< "$var wire 1 " << SYMBOL_PIN_SEL << " SEL $end" << endl
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<< "$var wire 1 " << SYMBOL_PIN_CD << " CD $end" << endl
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<< "$var wire 1 " << SYMBOL_PIN_IO << " IO $end" << endl
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<< "$var wire 1 " << SYMBOL_PIN_MSG << " MSG $end" << endl
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<< "$var wire 1 " << SYMBOL_PIN_REQ << " REQ $end" << endl
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<< "$var wire 1 " << SYMBOL_PIN_ACK << " ACK $end" << endl
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<< "$var wire 1 " << SYMBOL_PIN_ATN << " ATN $end" << endl
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<< "$var wire 1 " << SYMBOL_PIN_RST << " RST $end" << endl
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<< "$var wire 8 " << SYMBOL_PIN_DAT << " data $end" << endl
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<< "$var string 1 " << SYMBOL_PIN_PHASE << " phase $end" << endl
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<< "$upscope $end" << endl
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<< "$enddefinitions $end" << endl;
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// Initial values - default to zeros
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vcd_ofstream << "$dumpvars" << endl
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<< "0" << SYMBOL_PIN_BSY << endl
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<< "0" << SYMBOL_PIN_SEL << endl
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<< "0" << SYMBOL_PIN_CD << endl
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<< "0" << SYMBOL_PIN_IO << endl
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<< "0" << SYMBOL_PIN_MSG << endl
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<< "0" << SYMBOL_PIN_REQ << endl
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<< "0" << SYMBOL_PIN_ACK << endl
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<< "0" << SYMBOL_PIN_ATN << endl
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<< "0" << SYMBOL_PIN_RST << endl
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<< "b00000000 " << SYMBOL_PIN_DAT << endl
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<< "$end" << endl;
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for (shared_ptr<DataSample> cur_sample : data_capture_array) {
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vcd_ofstream << "#" << (double)cur_sample->GetTimestamp() * ScsiMon::ns_per_loop << endl;
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vcd_output_if_changed_bool(vcd_ofstream, cur_sample->GetBSY(), PIN_BSY, SYMBOL_PIN_BSY);
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vcd_output_if_changed_bool(vcd_ofstream, cur_sample->GetSEL(), PIN_SEL, SYMBOL_PIN_SEL);
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vcd_output_if_changed_bool(vcd_ofstream, cur_sample->GetCD(), PIN_CD, SYMBOL_PIN_CD);
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vcd_output_if_changed_bool(vcd_ofstream, cur_sample->GetIO(), PIN_IO, SYMBOL_PIN_IO);
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vcd_output_if_changed_bool(vcd_ofstream, cur_sample->GetMSG(), PIN_MSG, SYMBOL_PIN_MSG);
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vcd_output_if_changed_bool(vcd_ofstream, cur_sample->GetREQ(), PIN_REQ, SYMBOL_PIN_REQ);
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vcd_output_if_changed_bool(vcd_ofstream, cur_sample->GetACK(), PIN_ACK, SYMBOL_PIN_ACK);
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vcd_output_if_changed_bool(vcd_ofstream, cur_sample->GetATN(), PIN_ATN, SYMBOL_PIN_ATN);
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vcd_output_if_changed_bool(vcd_ofstream, cur_sample->GetRST(), PIN_RST, SYMBOL_PIN_RST);
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vcd_output_if_changed_byte(vcd_ofstream, cur_sample->GetDAT(), PIN_DT0, SYMBOL_PIN_DAT);
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vcd_output_if_changed_phase(vcd_ofstream, cur_sample->GetPhase(), PIN_PHASE, SYMBOL_PIN_PHASE);
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}
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vcd_ofstream.close();
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}
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