private async Task <Pack> DetermineGeometry()
{
// Read all cell voltages in the whole chain
await this.Connection.ExecuteCommand(CommandId.StartCellConversion(ConversionMode.Normal, false, 0)).ConfigureAwait(false);
await Task.Delay(3).ConfigureAwait(false);
// Read voltages
var cellVoltageA = (await this.Connection.ReadRegister(CommandId.ReadCellRegisterA, 6).ConfigureAwait(false)).ToArray();
var cellVoltageB = (await this.Connection.ReadRegister(CommandId.ReadCellRegisterB, 6).ConfigureAwait(false)).ToArray();
var cellVoltageC = (await this.Connection.ReadRegister(CommandId.ReadCellRegisterC, 6).ConfigureAwait(false)).ToArray();
var cellVoltageD = (await this.Connection.ReadRegister(CommandId.ReadCellRegisterD, 6).ConfigureAwait(false)).ToArray();
this.CheckChainLength("determining pack geometry", cellVoltageA, cellVoltageB, cellVoltageC, cellVoltageD);
// Build a series pack for each IC in chain
var chainPacks = new List <ChipPack>();
for (int chainIndex = 0; chainIndex < this.ChainLength; chainIndex++)
{
// Decode cell voltages
var voltageRegister = CellVoltageRegister.FromGroups(cellVoltageA[chainIndex], cellVoltageB[chainIndex], cellVoltageC[chainIndex], cellVoltageD[chainIndex]);
var cellVoltages = Enumerable.Range(1, 12)
.Select(x => Tuple.Create(x, voltageRegister.GetCellVoltage(x)));
// Detect connected cells
var packCells = cellVoltages
.Where(x => x.Item2 > MinConnectedCellVoltage)
.ToDictionary(x => x.Item1,
x =>
{
var cell = new SingleCell();
cell.Actuals().Voltage = x.Item2;
return(cell);
});
var chipPack = new ChipPack(chainIndex, packCells);
chainPacks.Add(chipPack);
}
this.logger.LogDebug(new TraceBuilder()
.AppendLine("A LTC6804 daisy chain with {0} chips recognized with following geometry:", this.ChainLength)
.Indent()
.ForEach(chainPacks, (tb, p) => tb
.AppendLine("Chain index {0} with {1} connected cells:", p.ChainIndex, p.ConnectedCells.Count)
.Indent()
.AppendLineForEach(p.ConnectedCells, "Channel {0} => {1} V", x => x.Key, x => x.Value.Actuals().Voltage)
.Unindent()
.AppendLine())
.Trace());
// Connect all chip packs into a series stack
Pack pack = chainPacks.Count > 1 ? new SeriesPack(chainPacks) : chainPacks[0];
return(pack);
}
private async Task <CellVoltageRegister[]> ReadCellVoltages()
{
var cellVoltageA = (await this.Connection.ReadRegister(CommandId.ReadCellRegisterA, 6).ConfigureAwait(false)).ToArray();
var cellVoltageB = (await this.Connection.ReadRegister(CommandId.ReadCellRegisterB, 6).ConfigureAwait(false)).ToArray();
var cellVoltageC = (await this.Connection.ReadRegister(CommandId.ReadCellRegisterC, 6).ConfigureAwait(false)).ToArray();
var cellVoltageD = (await this.Connection.ReadRegister(CommandId.ReadCellRegisterD, 6).ConfigureAwait(false)).ToArray();
this.CheckChainLength("reading cell voltages", cellVoltageA, cellVoltageB, cellVoltageC, cellVoltageD);
var voltageRegisters = Enumerable.Range(0, this.ChainLength)
.Select(x => CellVoltageRegister.FromGroups(cellVoltageA[x], cellVoltageB[x], cellVoltageC[x], cellVoltageD[x]))
.ToArray();
return(voltageRegisters);
}
