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Fix Waagen

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This commit is contained in:
Lorenz Stechauner
2023-08-11 18:46:58 +02:00
parent c65ffaf161
commit 041e674af9
3 changed files with 87 additions and 25 deletions
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44
Elwig/Helpers/Weighing/SystecScale.cs
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@ -4,7 +4,6 @@ using System.IO.Ports;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
namespace Elwig.Helpers.Weighing {
public class SystecScale : IScale {
@ -76,12 +75,12 @@ namespace Elwig.Helpers.Weighing {
throw new ArgumentException("Invalid value for argument empty");
}
public async Task SendCommand(string command) {
protected async Task SendCommand(string command) {
byte[] bytes = Encoding.ASCII.GetBytes($"<{command}>");
await Stream.WriteAsync(bytes);
}
public async Task<string> ReceiveResponse() {
protected async Task<string> ReceiveResponse() {
string? line = null;
using (var reader = new StreamReader(Stream, Encoding.ASCII, false, -1, true)) {
line = await reader.ReadLineAsync();
@ -93,7 +92,7 @@ namespace Elwig.Helpers.Weighing {
var error = line[1..3];
if (error[0] == '0') {
if (error[1] != '0') {
throw new IOException($"Invalid response from scale (error code {error}");
throw new IOException($"Invalid response from scale (error code {error})");
}
} else if (error[0] == '1') {
string msg = $"Unbekannter Fehler (Fehler code {error})";
@ -118,32 +117,41 @@ namespace Elwig.Helpers.Weighing {
throw new IOException($"Invalid response from scale (error code {error})");
}
return line[3..(line.Length - 1)];
return line[1..(line.Length - 1)];
}
protected async Task<WeighingResult> Weigh(bool incIdentNr) {
await SendCommand(incIdentNr ? $"RM{InternalScaleNr}" : $"RN{InternalScaleNr}");
string line = await ReceiveResponse();
await SendCommand(incIdentNr ? $"RN{InternalScaleNr}" : $"RM{InternalScaleNr}");
string record = await ReceiveResponse();
if (record.Length != 62)
throw new IOException("Invalid response from scale: Received record has invalid size");
var line = record[2..];
var status = line[ 0.. 2];
var date = line[ 2..10];
var time = line[10..15];
var identNr = line[15..19];
var identNr = line[15..19].Trim();
var scaleNr = line[19..20];
var brutto = line[20..28];
var tara = line[28..36];
var netto = line[36..44];
var brutto = line[20..28].Trim();
var tara = line[28..36].Trim();
var netto = line[36..44].Trim();
var unit = line[44..46];
var taraCode = line[46..48];
var zone = line[48..49];
var terminalNr = line[49..52];
var crc16 = line[52..60];
var zone = line[48..49].Trim();
var terminalNr = line[49..52].Trim();
var crc16 = line[52..60].Trim();
if (Utils.CalcCrc16Modbus(record[..54]).ToString() != crc16) {
throw new IOException($"Invalid response from scale: Invalid CRC16 checksum ({crc16} != {Utils.CalcCrc16Modbus(record[..54]).ToString()})");
} else if (unit != "kg") {
throw new IOException($"Unsupported unit in weighing response: '{unit}'");
}
return new() {
Weight = int.TryParse(netto.Trim(), out int w) ? w : null,
WeighingId = identNr.Trim().Length > 0 ? identNr.Trim() : null,
Date = date,
Time = time,
Weight = int.TryParse(netto, out int w) ? w : null,
WeighingId = identNr.Length > 0 && identNr != "0" ? identNr : null,
Date = DateOnly.Parse(date),
Time = TimeOnly.Parse(time),
};
}