/// <summary>
/// A simple SRAM test.
/// </summary>
/// <param name="shouter">Public shouter instance.</param>
/// <param name="sram">The SRAM type.</param>
/// <param name="progressBar">The progress bar.</param>
/// <param name="passName">The name of the pass.</param>
/// <param name="totalNumberOfAdresses">The total number of adresses.</param>
/// <param name="dataGenerator">A device the generates values for addresses.</param>
/// <returns>Tuples of non-working addresses: (address, read_byte, expected_byte).</returns>
public List <Tuple <int, string, string> > SRamTestPass(IShouter shouter, SRam sram, ProgressBar progressBar, string passName, int totalNumberOfAdresses, IDataGenerator dataGenerator)
{
progressBar.Shout(passName);
var translator = sram.GetPinTranslator(ZIFType);
SetVccLevel(sram.VccLevel);
ApplyGnd(translator.ToZIF, sram.GndPins);
ApplyVcc(translator.ToZIF, sram.VccPins);
PullUpsEnable(true);
var badCells = new List <Tuple <int, string, string> >();
var writerZif = new ZIFSocket(40);
for (var address = 0; address < totalNumberOfAdresses; address++)
{
writerZif.SetAll(true);
writerZif.Disable(sram.GndPins, translator.ToZIF);
writerZif.Enable(sram.Constants, translator.ToZIF);
writerZif.Enable(sram.ChipEnable, translator.ToZIF);
sram.SetAddress(writerZif, address);
sram.SetData(writerZif, dataGenerator.GetData(address));
WriteZIF(writerZif, "");
writerZif.Enable(sram.WriteEnable, translator.ToZIF);
WriteZIF(writerZif, "");
writerZif.Disable(sram.WriteEnable, translator.ToZIF);
WriteZIF(writerZif, "");
progressBar.Progress();
}
for (var address = 0; address < totalNumberOfAdresses; address++)
{
writerZif.SetAll(true);
writerZif.Disable(sram.GndPins, translator.ToZIF);
writerZif.Enable(sram.Constants, translator.ToZIF);
writerZif.Enable(sram.ChipEnable, translator.ToZIF);
writerZif.Enable(sram.OutputEnable, translator.ToZIF);
writerZif.Disable(sram.WriteEnable, translator.ToZIF);
sram.SetAddress(writerZif, address);
WriteZIF(writerZif, "Writing SRam address.");
var readerZif = ReadZIF("Reading SRam data.")[0];
var dataOutPins = sram.DataOutPins.Length != 0 ? sram.DataOutPins : sram.DataPins;
var expectedData = dataGenerator.GetData(address);
var addressBitCounter = 0;
foreach (var i in dataOutPins.Select(translator.ToZIF))
{
if (readerZif[i] != expectedData[addressBitCounter++])
{
addressBitCounter = 0;
var expected = "";
var read = "";
foreach (var j in dataOutPins.Select(translator.ToZIF))
{
expected = expected + (expectedData[addressBitCounter++] ? "1" : "0");
read = read + (readerZif[j] ? "1" : "0");
}
badCells.Add(Tuple.Create(address, read, expected));
progressBar.Shout("{0}: Bad cell at address {1}", passName, address.ToString("X4"));
break;
}
}
progressBar.Progress();
}
return(badCells);
}
/// <summary>
/// A simple SRAM test.
/// </summary>
/// <param name="shouter">Public shouter instance.</param>
/// <param name="sram">The SRAM type.</param>
/// <param name="progressBar">The progress bar.</param>
/// <param name="totalNumberOfAdresses">The total number of adresses.</param>
/// <param name="firstBit">The value of the first bit to write to the SRAM.</param>
/// <returns>Tuples of non-working addresses: (address, read_byte, expected_byte).</returns>
public List <Tuple <int, string, string> > OldSRamTest(IShouter shouter, SRam sram, ProgressBar progressBar, int totalNumberOfAdresses, bool firstBit)
{
var translator = sram.GetPinTranslator(ZIFType);
SetVccLevel(sram.VccLevel);
ApplyGnd(translator.ToZIF, sram.GndPins);
ApplyVcc(translator.ToZIF, sram.VccPins);
PullUpsEnable(true);
var badCells = new List <Tuple <int, string, string> >();
var writerZif = new ZIFSocket(40);
var startBit = firstBit;
for (var address = 0; address < totalNumberOfAdresses; address++)
{
var bit = startBit;
writerZif.SetAll(true);
writerZif.Disable(sram.GndPins, translator.ToZIF);
writerZif.Enable(sram.Constants, translator.ToZIF);
writerZif.Enable(sram.ChipEnable, translator.ToZIF);
sram.SetAddress(writerZif, address);
foreach (var i in sram.DataPins.Select(translator.ToZIF))
{
writerZif[i] = bit;
bit = !bit;
}
startBit = !startBit;
WriteZIF(writerZif, "");
writerZif.Enable(sram.WriteEnable, translator.ToZIF);
WriteZIF(writerZif, "");
writerZif.Disable(sram.WriteEnable, translator.ToZIF);
WriteZIF(writerZif, "");
progressBar.Progress();
}
startBit = firstBit;
for (var address = 0; address < totalNumberOfAdresses; address++)
{
var bit = startBit;
writerZif.SetAll(true);
writerZif.Disable(sram.GndPins, translator.ToZIF);
writerZif.Enable(sram.Constants, translator.ToZIF);
writerZif.Enable(sram.ChipEnable, translator.ToZIF);
writerZif.Enable(sram.OutputEnable, translator.ToZIF);
writerZif.Disable(sram.WriteEnable, translator.ToZIF);
sram.SetAddress(writerZif, address);
WriteZIF(writerZif, "Writing SRam address.");
var readerZif = ReadZIF("Reading SRam data.")[0];
var dataOutPins = sram.DataOutPins.Length != 0 ? sram.DataOutPins : sram.DataPins;
foreach (var i in dataOutPins.Select(translator.ToZIF))
{
if (readerZif[i] != bit)
{
var expected = "";
var read = "";
bit = startBit;
foreach (var j in dataOutPins.Select(translator.ToZIF))
{
expected = expected + (bit ? "1" : "0");
read = read + (readerZif[j] ? "1" : "0");
bit = !bit;
}
badCells.Add(Tuple.Create(address, read, expected));
progressBar.Shout("Bad cell at address {0}", address.ToString("X4"));
break;
}
bit = !bit;
}
startBit = !startBit;
progressBar.Progress();
}
return(badCells);
}
