Updates for V5.0

Firmware/LogicAnalyzer/LogicAnalyzer.c

@@ -10,6 +10,7 @@
 #include "pico/multicore.h"
 #include "LogicAnalyzer.pio.h"
 #include "LogicAnalyzer_Structs.h"
+#include "tusb.h"
 
 #ifdef WS2812_LED
     #include "LogicAnalyzer_W2812.h"
@@ -85,6 +86,8 @@ CAPTURE_REQUEST* req;
 
 #ifdef USE_CYGW_WIFI
 
+/// @brief Stores a new WiFi configuration in the flash of the device
+/// @param settings Settings to store
 void storeSettings(WIFI_SETTINGS* settings)
 {
     uint8_t buffer[FLASH_PAGE_SIZE];
@@ -129,6 +132,10 @@ void storeSettings(WIFI_SETTINGS* settings)
 }
 
 #endif
+
+/// @brief Sends a response message to the host application in string mode
+/// @param response The message to be sent (null terminated)
+/// @param toWiFi If true the message is sent to a WiFi endpoint, else to the USB connection through STDIO
 void sendResponse(const char* response, bool toWiFi)
 {
     #ifdef USE_CYGW_WIFI
@@ -146,6 +153,10 @@ void sendResponse(const char* response, bool toWiFi)
         printf(response);
 }
 
+/// @brief Processes data received from the host application
+/// @param data The received data
+/// @param length Length of the data
+/// @param fromWiFi If true the message comes from a WiFi connection
 void processData(uint8_t* data, uint length, bool fromWiFi)
 {
     for(uint pos = 0; pos < length; pos++)
@@ -208,7 +219,7 @@ void processData(uint8_t* data, uint length, bool fromWiFi)
                             else if(req->triggerType == 2) //start fast trigger capture
                                 started = startCaptureFast(req->frequency, req->preSamples, req->postSamples, (uint8_t*)&req->channels, req->channelCount, req->trigger, req->count, req->triggerValue, req->captureMode);
                             else //Start simple trigger capture
-                                started = startCaptureSimple(req->frequency, req->preSamples, req->postSamples, (uint8_t*)&req->channels, req->channelCount, req->trigger, req->inverted, req->captureMode);
+                                started = startCaptureSimple(req->frequency, req->preSamples, req->postSamples, req->loopCount, (uint8_t*)&req->channels, req->channelCount, req->trigger, req->inverted, req->captureMode);
                         
                         #else
 
@@ -301,6 +312,44 @@ void processData(uint8_t* data, uint length, bool fromWiFi)
     //have any data, but the capture request has a CAPTURE_REQUEST struct as data.
 }
 
+/// @brief Transfer a buffer of data through USB using the TinyUSB CDC functions
+/// @param data Buffer of data to transfer
+/// @param len Length of the buffer
+void cdc_transfer(unsigned char* data, int len)
+{
+
+    int left = len;
+    int pos = 0;
+
+    while(left > 0)
+    {
+        int avail = (int) tud_cdc_write_available();
+
+        if(avail > left)
+            avail = left;
+
+        if(avail)
+        {
+            int transferred = (int) tud_cdc_write(data + pos, avail);
+            tud_task();
+            tud_cdc_write_flush();
+            
+            pos += transferred;
+            left -= transferred;
+        }
+        else
+        {
+            tud_task();
+            tud_cdc_write_flush();
+            if (!tud_cdc_connected())
+                break;
+        }
+    }
+}
+
+/// @brief Receive and process USB data from the host application
+/// @param skipProcessing If true the received data is not processed (used for cleanup)
+/// @return True if anything is received, false if not
 bool processUSBInput(bool skipProcessing)
 {
     //Try to get char
@@ -321,11 +370,14 @@ bool processUSBInput(bool skipProcessing)
 
 #ifdef USE_CYGW_WIFI
 
+/// @brief Purges any pending data in the USB input
 void purgeUSBData()
 {
     while(getchar_timeout_us(0) != PICO_ERROR_TIMEOUT);
 }
 
+/// @brief Callback for the WiFi event queue
+/// @param event Received event
 void wifiEvent(void* event)
 {
     EVENT_FROM_WIFI* wEvent = (EVENT_FROM_WIFI*)event;
@@ -353,6 +405,9 @@ void wifiEvent(void* event)
     }
 }
 
+/// @brief Receives and processes input from the host application (when connected through WiFi)
+/// @param skipProcessing /// @param skipProcessing If true the received data is not processed (used for cleanup)
+/// @return True if anything is received, false if not
 bool processWiFiInput(bool skipProcessing)
 {
     bool res = event_has_events(&wifiToFrontend);
@@ -372,6 +427,7 @@ bool processWiFiInput(bool skipProcessing)
 
 #endif
 
+/// @brief Process input data from the host application if it is available
 void processInput()
 {
     #ifdef USE_CYGW_WIFI
@@ -384,6 +440,8 @@ void processInput()
     #endif
 }
 
+/// @brief Processes input data from the host application to check if there is any cancel capture request
+/// @return True if there was input data
 bool processCancel()
 {
     #ifdef USE_CYGW_WIFI
@@ -397,6 +455,8 @@ bool processCancel()
     #endif
 }
 
+/// @brief Main app loop
+/// @return Exit code
 int main()
 {
     //Overclock Powerrrr!
@@ -454,18 +514,10 @@ int main()
                         event_push(&frontendToWifi, &evt);
                     }
                     else
-                    {   
+                        cdc_transfer(lengthPointer, 4);
-                        putchar_raw(lengthPointer[0]);
-                        putchar_raw(lengthPointer[1]);
-                        putchar_raw(lengthPointer[2]);
-                        putchar_raw(lengthPointer[3]);
-                    }
 
                 #else
-                    putchar_raw(lengthPointer[0]);
+                    cdc_transfer(lengthPointer, 4);
-                    putchar_raw(lengthPointer[1]);
-                    putchar_raw(lengthPointer[2]);
-                    putchar_raw(lengthPointer[3]);
                 #endif
 
                 sleep_ms(100);
@@ -513,23 +565,24 @@ int main()
                     }
                     else
                     {
-                        for(int buc = 0; buc < length; buc++)
+                        if(first + length > CAPTURE_BUFFER_SIZE)
                         {
-                            putchar_raw(buffer[first++]);
+                            cdc_transfer(buffer + first, CAPTURE_BUFFER_SIZE - first);
-
+                            cdc_transfer(buffer, (first + length) - CAPTURE_BUFFER_SIZE);
-                            if(first >= 131072)
-                                first = 0;
                         }
+                        else
+                            cdc_transfer(buffer + first, length);
                     }
                 #else
-                    //Send the samples
-                    for(int buc = 0; buc < length; buc++)
-                    {
-                        putchar_raw(buffer[first++]);
 
-                        if(first >= 131072)
+                    if(first + length > CAPTURE_BUFFER_SIZE)
-                            first = 0;
+                    {
+                        cdc_transfer(buffer + first, CAPTURE_BUFFER_SIZE - first);
+                        cdc_transfer(buffer, (first + length) - CAPTURE_BUFFER_SIZE);
                     }
+                    else
+                        cdc_transfer(buffer + first, length);
+
                 #endif
                 //Done!
                 capturing = false;

Firmware/LogicAnalyzer/LogicAnalyzer.pio

@@ -2,7 +2,9 @@
 .program POSITIVE_CAPTURE
 
     pull
-    out x 32    		        ;read capture length
+    out y 32    		        ;read loop count
+    pull
+    mov x, osr                  ;read capture length (use MOV instead of PULL so we can MOV it again on each loop)
 
 .wrap_target
 
@@ -16,19 +18,28 @@ POST_CAPTURE:
     in pins 32			        ;read sample
     jmp x-- POST_CAPTURE		;loop if more samples needed
 
+    jmp y-- LOOP                ;jump to loop control
+
     irq 0                       ;notify to the main program that we have finished capturing
 
 LOCK:
 
     jmp LOCK                    ;block the program
 
+LOOP:
+    mov x, osr                  ;read loop count
+INNER_LOOP:
+
+    jmp pin POST_CAPTURE        ;wait for trigger
+    jmp INNER_LOOP
+
 ;--------------------------------------------------------------------------------------------
 .program NEGATIVE_CAPTURE
 
-.wrap_target
-
     pull
-    out x 32			        ;read capture length
+    out y 32    		        ;read loop count
+    pull
+    mov x, osr                  ;read capture length (use MOV instead of PULL so we can MOV it again on each loop)
 
 PRE_CAPTURE:
 
@@ -37,15 +48,24 @@ PRE_CAPTURE:
 
 POST_CAPTURE:
 
+.wrap_target
+
     in pins 32			        ;read sample
     jmp x-- POST_CAPTURE		;loop if more samples needed
 
+    jmp y-- LOOP                ;jump to loop control
+
     irq 0                       ;notify to the main program that we have finished capturing
 
 LOCK:
 
     jmp LOCK                    ;block the program
 
+LOOP:
+    mov x, osr                  ;read loop count
+INNER_LOOP:
+    jmp pin INNER_LOOP          ;wait for trigger
+
 .wrap
 
 ;--------------------------------------------------------------------------------------------
@@ -131,6 +151,8 @@ LOCK:
 #include "string.h"
 #include "hardware/sync.h"
 
+#define CAPTURE_BUFFER_SIZE (128 * 1024)
+
 typedef enum
 {
     MODE_8_CHANNEL,
@@ -161,6 +183,7 @@ static uint8_t lastCapturePinCount;         //Count of captured pins
 static uint32_t lastTriggerCapture;         //Moment where the trigger happened inside the circular pre buffer
 static uint32_t lastPreSize;                //Pre-trigger buffer size
 static uint32_t lastPostSize;               //Post-trigger buffer size
+static uint32_t lastLoopCount;              //Number of loops
 static bool lastTriggerInverted;            //Inverted?
 static uint8_t lastTriggerPin;
 static uint32_t lastStartPosition;
@@ -187,7 +210,7 @@ static bool captureProcessed;
 #endif
 
 //Main capture buffer, aligned at a 32k boundary, to use the maxixmum ring size supported by DMA channels
-static uint8_t captureBuffer[128 * 1024] __attribute__((aligned(32768)));
+static uint8_t captureBuffer[CAPTURE_BUFFER_SIZE] __attribute__((aligned(32768)));
 
 //-----------------------------------------------------------------------------
 //--------------Complex trigger PIO program------------------------------------
@@ -330,8 +353,8 @@ uint32_t find_capture_tail()
     if(busy_channel == 0xFFFFFFFF) 
         return 0xFFFFFFFF;
     
-    //Ok, now we need to know at which transfer the DMA is. The value equals to MAX_TRANSFERS - TRANSFERS_LEFT.
+    //Ok, now we need to know at which transfer the DMA is. The value equals to MAX_TRANSFERS - TRANSFERS_LEFT - 1 (DMA channel decrements transfer_count when it starts :/).
-    int32_t transfer = transferCount - dma_channel_hw_addr(busy_channel)->transfer_count;
+    int32_t transfer = transferCount - dma_channel_hw_addr(busy_channel)->transfer_count - 1;
 
     //Now compute the last capture position
     transfer = (transfer + busy_offset) - 1;
@@ -636,6 +659,7 @@ bool startCaptureFast(uint32_t freq, uint32_t preLength, uint32_t postLength, co
     //Store info about the capture
     lastPreSize = preLength;
     lastPostSize = postLength;
+    lastLoopCount = 0;
     lastCapturePinCount = capturePinCount;
     lastCaptureComplexFast = true;
     lastCaptureMode = captureMode;
@@ -653,8 +677,8 @@ bool startCaptureFast(uint32_t freq, uint32_t preLength, uint32_t postLength, co
 
     //Store the PIO units and clear program memory
     capturePIO = pio1; //Cannot clear it in PIO1 because the W uses PIO1 to transfer data
-
     triggerPIO = pio0;
+
     pio_clear_instruction_memory(triggerPIO);
 
     //Configure 24 + 2 IO's to be used by the PIO (24 channels + 2 trigger pins)
@@ -802,6 +826,7 @@ bool startCaptureComplex(uint32_t freq, uint32_t preLength, uint32_t postLength,
     //Store info about the capture
     lastPreSize = preLength;
     lastPostSize = postLength;
+    lastLoopCount = 0;
     lastCapturePinCount = capturePinCount;
     lastCaptureComplexFast = true;
     lastCaptureMode = captureMode;
@@ -910,7 +935,7 @@ bool startCaptureComplex(uint32_t freq, uint32_t preLength, uint32_t postLength,
 
 #endif
 
-bool startCaptureSimple(uint32_t freq, uint32_t preLength, uint32_t postLength, const uint8_t* capturePins, uint8_t capturePinCount, uint8_t triggerPin, bool invertTrigger, CHANNEL_MODE captureMode)
+bool startCaptureSimple(uint32_t freq, uint32_t preLength, uint32_t postLength, uint8_t loopCount, const uint8_t* capturePins, uint8_t capturePinCount, uint8_t triggerPin, bool invertTrigger, CHANNEL_MODE captureMode)
 {
 
     int maxSamples;
@@ -950,6 +975,7 @@ bool startCaptureSimple(uint32_t freq, uint32_t preLength, uint32_t postLength,
     //Store info about the capture
     lastPreSize = preLength;
     lastPostSize = postLength;
+    lastLoopCount = loopCount;
     lastCapturePinCount = capturePinCount;
     lastTriggerInverted = invertTrigger;
     lastCaptureComplexFast = false;
@@ -1028,9 +1054,11 @@ bool startCaptureSimple(uint32_t freq, uint32_t preLength, uint32_t postLength,
     //Enable state machine
     pio_sm_set_enabled(capturePIO, sm_Capture, true);
 
-    //Write capture length to post program to start the capture process
+    //Write loop count and capture length to post program to start the capture process
+    pio_sm_put_blocking(capturePIO, sm_Capture, loopCount);
     pio_sm_put_blocking(capturePIO, sm_Capture, postLength - 1);
     
+
     //Finally clear capture status, process flags and capture type
     captureFinished = false;
     captureProcessed = false;
@@ -1048,6 +1076,9 @@ bool IsCapturing()
 
 uint8_t* GetBuffer(uint32_t* bufferSize, uint32_t* firstSample, CHANNEL_MODE* captureMode)
 {
+    //Compute total sample count
+    uint32_t totalSamples = lastPreSize + (lastPostSize * (lastLoopCount + 1));
+
     //If we don't have processed the buffer...
     if(!captureProcessed)
     {
@@ -1066,11 +1097,13 @@ uint8_t* GetBuffer(uint32_t* bufferSize, uint32_t* firstSample, CHANNEL_MODE* ca
                 break;
         }
         //Calculate start position
-        if(lastTail < lastPreSize + lastPostSize - 1)
+        if(lastTail < totalSamples - 1)
-            lastStartPosition = maxSize - ((lastPreSize + lastPostSize) - (lastTail - 1));
+            lastStartPosition = (maxSize - totalSamples) + lastTail + 1;
         else
-            lastStartPosition = lastTail - (lastPreSize + lastPostSize) + 1;
+            lastStartPosition = lastTail - totalSamples + 1;
+
         uint32_t currentPos = lastStartPosition;
+
         switch(lastCaptureMode)
         {
             case MODE_24_CHANNEL:
@@ -1082,7 +1115,7 @@ uint8_t* GetBuffer(uint32_t* bufferSize, uint32_t* firstSample, CHANNEL_MODE* ca
 
                     //Sort channels
                     //(reorder captured bits based on the channels requested)
-                    for(int buc = 0; buc < lastPreSize + lastPostSize; buc++)
+                    for(int buc = 0; buc < totalSamples; buc++)
                     {
                         oldValue = buffer[currentPos]; //Store current value
                         newValue = 0; //New value
@@ -1110,7 +1143,7 @@ uint8_t* GetBuffer(uint32_t* bufferSize, uint32_t* firstSample, CHANNEL_MODE* ca
 
                     //Sort channels
                     //(reorder captured bits based on the channels requested)
-                    for(int buc = 0; buc < lastPreSize + lastPostSize; buc++)
+                    for(int buc = 0; buc < totalSamples; buc++)
                     {
                         oldValue = buffer[currentPos]; //Store current value
                         newValue = 0; //New value
@@ -1138,7 +1171,7 @@ uint8_t* GetBuffer(uint32_t* bufferSize, uint32_t* firstSample, CHANNEL_MODE* ca
 
                     //Sort channels
                     //(reorder captured bits based on the channels requested)
-                    for(int buc = 0; buc < lastPreSize + lastPostSize; buc++)
+                    for(int buc = 0; buc < totalSamples; buc++)
                     {
                         oldValue = buffer[currentPos]; //Store current value
                         newValue = 0; //New value
@@ -1162,7 +1195,7 @@ uint8_t* GetBuffer(uint32_t* bufferSize, uint32_t* firstSample, CHANNEL_MODE* ca
     }
     //Return data
     *captureMode = lastCaptureMode;
-    *bufferSize = lastPreSize + lastPostSize;
+    *bufferSize = totalSamples;
     *firstSample = lastStartPosition;
     return captureBuffer;
 }

Firmware/LogicAnalyzer/LogicAnalyzer_Build_Settings.h

@@ -1,7 +1,7 @@
 #ifndef __BUILD_SETTINGS__
     #define __BUILD_SETTINGS__
 
-    #define FIRMWARE_VERSION "4_5"
+    #define FIRMWARE_VERSION "V5_0"
 
     //Select the board type to build the firmware for
     #define BUILD_PICO

Firmware/LogicAnalyzer/LogicAnalyzer_Structs.h

@@ -33,6 +33,8 @@
         uint32_t preSamples;
         //Number of samples stored after the trigger
         uint32_t postSamples;
+        //Number of capture loops
+        uint8_t loopCount;
         //Capture mode (0 = 8 channel, 1 = 16 channel, 2 = 24 channel)
         uint8_t captureMode;
 

Software/LogicAnalyzer/CLCapture/CLCapture.csproj

@@ -6,7 +6,7 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <ApplicationIcon>window.ico</ApplicationIcon>
-    <Version>4.5.1.0</Version>
+    <Version>5.0.0.0</Version>
   </PropertyGroup>
 
   <ItemGroup>

Software/LogicAnalyzer/CLCapture/CLCaptureOptions.cs

@@ -14,17 +14,25 @@ namespace CLCapture
     {
         [Value(0, Required = true, HelpText = "Device's serial port or IP address and port.")]
         public string? AddressPort { get; set; }
+
         [Value(1, Required = true, HelpText = "Desired sampling frequency.")]
         public int SamplingFrequency { get; set; }
+
         [Value(2, Required = true, HelpText = "List of channels to capture (channels sepparated by comma, can contain a name adding a semicolon after the channel number, no spaces allowed).")]
         public string? Channels { get; set; }
+
         [Value(3, Required = true, HelpText = "Number of samples to capture before the trigger.")]
         public int PreSamples { get; set; }
+
         [Value(4, Required = true, HelpText = "Number of samples to capture after the trigger.")]
         public int PostSamples { get; set; }
-        [Value(5, Required = true, HelpText = "Trigger definition in the form of \"TriggerType:(Edge, Fast or Complex),Channel:(base trigger channel),Value:(string containing 1's and 0's indicating each trigger chanel state)\".")]
+
+        [Value(5, Required = true, HelpText = "Number of bursts to capture (0 or 1 to disable burst mode).")]
+        public int LoopCount { get; set; }
+
+        [Value(6, Required = true, HelpText = "Trigger definition in the form of \"TriggerType:(Edge, Fast or Complex),Channel:(base trigger channel),Value:(string containing 1's and 0's indicating each trigger chanel state)\".")]
         public CLTrigger? Trigger { get; set; }
-        [Value(6, Required = true, HelpText = "Name of the output file.")]
+        [Value(7, Required = true, HelpText = "Name of the output file.")]
         public string? OutputFile { get; set; }
     }
 

Software/LogicAnalyzer/CLCapture/Program.cs

@@ -180,8 +180,7 @@ async Task<int> Capture(CLCaptureOptions opts)
     if (opts.Trigger.TriggerType == CLTriggerType.Edge)
     {
         Console.WriteLine("Starting edge triggered capture...");
-        var resStart = driver.StartCapture(opts.SamplingFrequency, opts.PreSamples, opts.PostSamples,
+        var resStart = driver.StartCapture(opts.SamplingFrequency, opts.PreSamples, opts.PostSamples, opts.LoopCount < 2 ? 0 : opts.LoopCount - 1, nChannels, opts.Trigger.Channel - 1, opts.Trigger.Value == "0", CaptureFinished);
-            nChannels, opts.Trigger.Channel - 1, opts.Trigger.Value == "0", CaptureFinished);
 
         if (resStart != CaptureError.None)
         {

Software/LogicAnalyzer/LogicAnalyzer/Classes/CaptureSettings.cs

@@ -11,12 +11,18 @@ namespace LogicAnalyzer.Classes
         public int Frequency { get; set; }
         public int PreTriggerSamples { get; set; }
         public int PostTriggerSamples { get; set; }
+        public int LoopCount { get; set; }
         public CaptureChannel[] CaptureChannels { get; set; } = new CaptureChannel[0];
         public int TriggerType { get; set; }
         public int TriggerChannel { get; set; }
         public bool TriggerInverted { get; set; }
         public int TriggerBitCount { get; set; }
         public ushort TriggerPattern { get; set; }
+
+        public CaptureSettings Clone()
+        {
+            return (CaptureSettings)MemberwiseClone();
+        }
     }
 
     public class CaptureChannel

Software/LogicAnalyzer/LogicAnalyzer/Controls/ChannelViewer.axaml.cs

@@ -67,7 +67,7 @@ namespace LogicAnalyzer.Controls
 
                 newChannelLabel.Text = channels[buc].TextualChannelNumber;
 
-                newChannelLabel.Foreground = GraphicObjectsCache.GetBrush(AnalyzerColors.FgChannelColors[buc]);
+                newChannelLabel.Foreground = GraphicObjectsCache.GetBrush(AnalyzerColors.FgChannelColors[buc % 24]);
 
                 newChannelGrid.Children.Add(newChannelLabel);
 

Software/LogicAnalyzer/LogicAnalyzer/Controls/SamplePreviewer.axaml

@@ -0,0 +1,7 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:Class="LogicAnalyzer.Controls.SamplePreviewer">
+</UserControl>

Software/LogicAnalyzer/LogicAnalyzer/Controls/SamplePreviewer.axaml.cs

@@ -0,0 +1,102 @@
+using Avalonia.Controls;
+using Avalonia.Media;
+using Avalonia.Media.Imaging;
+using LogicAnalyzer.Classes;
+using MessageBox.Avalonia.DTO;
+using SkiaSharp;
+using System;
+
+namespace LogicAnalyzer.Controls
+{
+    public partial class SamplePreviewer : UserControl
+    {
+        Bitmap? bmp;
+        int sampleCount = 0;
+
+        int viewPosition;
+        public int ViewPosition { get { return viewPosition; } set { viewPosition = value; InvalidateVisual(); } }
+
+        public SamplePreviewer()
+        {
+            InitializeComponent();
+        }
+
+        public void UpdateSamples(UInt128[] Samples, int ChannelCount)
+        {
+            if (ChannelCount > 24)
+                ChannelCount = 24;
+
+            int width = Math.Max(Math.Min(Samples.Length, 4096), 1024);
+
+            float cHeight = 144 / (float)ChannelCount;
+            float sWidth = (float)width / (float)Samples.Length;
+            float high = cHeight / 6;
+            float low = cHeight - high;
+
+            using SKBitmap skb = new SKBitmap(width, 144);
+
+            SKPaint[] colors = new SKPaint[ChannelCount];
+
+            for (int buc = 0; buc < ChannelCount; buc++)
+            {
+                var avColor = AnalyzerColors.FgChannelColors[buc];
+
+                colors[buc] = new SKPaint
+                {
+                    Style = SKPaintStyle.Stroke,
+                    StrokeWidth = 1,
+                    Color = new SKColor(avColor.R, avColor.G, avColor.B)
+                };
+            }
+
+            using (var canvas = new SKCanvas(skb))
+            {
+                for (int x = 0; x < Samples.Length; x++)
+                {
+                    UInt128 sample = Samples[x];
+                    UInt128 prevSample = Samples[x == 0 ? x : x - 1];
+
+                    for (int chan = 0; chan < ChannelCount; chan++)
+                    {
+                        UInt128 curVal = sample & ((UInt128)1 << chan);
+                        UInt128 prevVal = prevSample & ((UInt128)1 << chan);
+
+                        float y = chan * cHeight + (curVal != 0 ? high : low);
+
+                        canvas.DrawLine(x * sWidth, y, (x + 1) * sWidth, y, colors[chan]);
+
+                        if (curVal != prevVal)
+                            canvas.DrawLine(x * sWidth, chan * cHeight + high, x * sWidth, chan * cHeight + low, colors[chan]);
+                    }
+                }
+            }
+
+            using var encoded = skb.Encode(SKEncodedImageFormat.Png, 1);
+            using var stream = encoded.AsStream();
+
+            if (bmp != null)
+                bmp.Dispose();
+
+            bmp = new Bitmap(stream);
+            sampleCount = Samples.Length;
+        }
+
+        public override void Render(DrawingContext context)
+        {
+            //base.Render(context);
+            var bounds = new Avalonia.Rect(0, 0, this.Bounds.Width, this.Bounds.Height);
+
+            context.FillRectangle(GraphicObjectsCache.GetBrush(Color.Parse("#222222")), bounds);
+
+            if (sampleCount == 0 || bmp == null)
+                return;
+
+            (bmp as IImage).Draw(context, new Avalonia.Rect(bmp.Size), bounds, Avalonia.Visuals.Media.Imaging.BitmapInterpolationMode.HighQuality);
+
+            float ratio = (float)bounds.Size.Width / (float)sampleCount;
+            float pos = viewPosition * ratio;
+
+            context.DrawLine(GraphicObjectsCache.GetPen(Colors.White, 1, DashStyle.Dash), new Avalonia.Point(pos, 0), new Avalonia.Point(pos, 143));
+        }
+    }
+}

Software/LogicAnalyzer/LogicAnalyzer/Controls/SampleViewer.axaml.cs

@@ -16,6 +16,7 @@ namespace LogicAnalyzer.Controls
         const int MIN_CHANNEL_HEIGHT = 48;
 
         public int PreSamples { get; set; }
+        public int[]? Bursts { get; set; }
         public UInt128[] Samples { get; set; }
         public int ChannelCount { get; set; }
         public int SamplesInScreen { get; set; }
@@ -32,7 +33,9 @@ namespace LogicAnalyzer.Controls
         Color sampleLineColor = Color.FromRgb(60, 60, 60);
         Color sampleDashColor = Color.FromArgb(60, 60, 60, 60);
         Color triggerLineColor = Colors.White;
+        Color burstLineColor = Colors.Azure;
         Color userLineColor = Colors.Cyan;
+
         public SampleViewer()
         {
             InitializeComponent();
@@ -101,7 +104,7 @@ namespace LogicAnalyzer.Controls
             {
                 //context.FillRectangle(GraphicObjectsCache.GetBrush(AnalyzerColors.BgChannelColors[0]), thisBounds);
 
-                if (PreSamples == 0 || Samples == null || ChannelCount == 0 || SamplesInScreen == 0 || updating)
+                if (Samples == null || ChannelCount == 0 || SamplesInScreen == 0 || updating)
                     return;
 
                 double channelHeight = thisBounds.Height / (double)ChannelCount;
@@ -148,6 +151,14 @@ namespace LogicAnalyzer.Controls
                     if (buc == PreSamples)
                         context.DrawLine(GraphicObjectsCache.GetPen(triggerLineColor, 2), new Point(lineX, 0), new Point(lineX, thisBounds.Height));
 
+                    if (Bursts != null)
+                    {
+                        if (Bursts.Any(b => b == buc))
+                        {
+                            context.DrawLine(GraphicObjectsCache.GetPen(burstLineColor, 2, DashStyle.DashDot), new Point(lineX, 0), new Point(lineX, thisBounds.Height));
+                        }
+                    }
+
                     if(UserMarker != null && UserMarker == buc)
                         context.DrawLine(GraphicObjectsCache.GetPen(userLineColor, 2, DashStyle.DashDot), new Point(lineX, 0), new Point(lineX, thisBounds.Height));
 

Software/LogicAnalyzer/LogicAnalyzer/Dialogs/CaptureDialog.axaml

@@ -158,7 +158,12 @@
               <RadioButton Name="rbTrigger23"></RadioButton>
               <RadioButton Name="rbTrigger24"></RadioButton>
             </StackPanel>
-            <CheckBox Name="ckNegativeTrigger" Margin="10,0,0,10">Negative edge</CheckBox>
+            <StackPanel Orientation="Horizontal">
+              <CheckBox Name="ckNegativeTrigger" Margin="10,0,0,10">Negative edge</CheckBox>
+              <CheckBox Name="ckBurst" Margin="20,0,0,10">Burst mode</CheckBox>
+              <TextBlock Margin="20,10,0,10">Burst count:</TextBlock>
+              <NumericUpDown IsEnabled="{Binding #ckBurst.IsChecked}" Width="135" Margin="10,0,0,10" Height="35" Minimum="2" Maximum="10000" Value="2" Name="nudBurstCount"></NumericUpDown>
+            </StackPanel>
           </StackPanel>
           <RadioButton Margin="15,0,0,0" Name="rbTriggerTypePattern">Pattern trigger</RadioButton>
           <StackPanel Name="pnlPatternTrigger" Orientation="Horizontal" VerticalAlignment="Top" Margin="10,0,10,10" Background="#80303030">

Software/LogicAnalyzer/LogicAnalyzer/Dialogs/CaptureDialog.axaml.cs

@@ -178,6 +178,7 @@ namespace LogicAnalyzer.Dialogs
                                 Frequency = oldset.Frequency,
                                 PostTriggerSamples = oldset.PostTriggerSamples,
                                 PreTriggerSamples = oldset.PreTriggerSamples,
+                                LoopCount = 0,
                                 TriggerBitCount = oldset.TriggerBitCount,
                                 TriggerChannel = oldset.TriggerChannel,
                                 TriggerInverted = oldset.TriggerInverted,
@@ -216,6 +217,8 @@ namespace LogicAnalyzer.Dialogs
 
                             triggerChannels[settings.TriggerChannel].IsChecked = true;
                             ckNegativeTrigger.IsChecked = settings.TriggerInverted;
+                            ckBurst.IsChecked = settings.LoopCount > 0;
+                            nudBurstCount.Value = settings.LoopCount > 0 ? settings.LoopCount : 1;
 
                             rbTriggerTypePattern.IsChecked = false;
                             rbTriggerTypeEdge.IsChecked = true;
@@ -280,7 +283,9 @@ namespace LogicAnalyzer.Dialogs
 
             int max = driver.GetLimits(channelsToCapture.Select(c => c.ChannelNumber).ToArray()).MaxTotalSamples;
 
-            if (nudPreSamples.Value + nudPostSamples.Value > max)
+            int loops = (int)((ckBurst.IsChecked ?? false) ? nudBurstCount.Value - 1 : 0);
+
+            if (nudPreSamples.Value + (nudPostSamples.Value * (loops + 1)) > max)
             {
                 await this.ShowError("Error", $"Total samples cannot exceed {max}.");
                 return;
@@ -385,6 +390,7 @@ namespace LogicAnalyzer.Dialogs
             settings.Frequency = (int)nudFrequency.Value;
             settings.PreTriggerSamples = (int)nudPreSamples.Value;
             settings.PostTriggerSamples = (int)nudPostSamples.Value;
+            settings.LoopCount = loops;
             settings.TriggerInverted = ckNegativeTrigger.IsChecked == true;
             settings.CaptureChannels = channelsToCapture.ToArray();
             

Software/LogicAnalyzer/LogicAnalyzer/LogicAnalyzer.csproj

@@ -8,7 +8,7 @@
     <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
     <ApplicationIcon>Assets\Ico40.ico</ApplicationIcon>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <Version>4.5.1.0</Version>
+    <Version>5.0.0.0</Version>
   </PropertyGroup>
   <ItemGroup>
     <None Remove=".gitignore" />

Software/LogicAnalyzer/LogicAnalyzer/MainWindow.axaml

@@ -47,7 +47,9 @@
       <controls:SampleMarker Grid.Column="1" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Foreground="White" Background="Transparent" Name="sampleMarker"></controls:SampleMarker>
     </Grid>
 
+    
     <ScrollBar VerticalAlignment="Bottom" HorizontalAlignment="Stretch" Orientation="Horizontal" DockPanel.Dock="Bottom" Name="scrSamplePos" AllowAutoHide="False"></ScrollBar>
+    <controls:SamplePreviewer IsVisible="False" VerticalAlignment="Bottom" HorizontalAlignment="Stretch" Height="144" ZIndex="1000" Name="samplePreviewer" DockPanel.Dock="Bottom" Margin="0,-144,0,0"></controls:SamplePreviewer>
     <Grid VerticalAlignment="Stretch" HorizontalAlignment="Stretch" ColumnDefinitions="*,240" DockPanel.Dock="Bottom">
       <ScrollViewer VerticalAlignment="Stretch" HorizontalAlignment="Stretch">
         <Grid ColumnDefinitions="140,*" VerticalAlignment="Stretch" HorizontalAlignment="Stretch">

Software/LogicAnalyzer/LogicAnalyzer/MainWindow.axaml.cs

@@ -1,5 +1,6 @@
 using Avalonia.Controls;
 using Avalonia.Controls.Primitives;
+using Avalonia.Input;
 using Avalonia.Interactivity;
 using Avalonia.Threading;
 using AvaloniaEdit.Utils;
@@ -64,16 +65,115 @@ namespace LogicAnalyzer
 
             tkInScreen.PropertyChanged += tkInScreen_ValueChanged;
             scrSamplePos.Scroll += scrSamplePos_ValueChanged;
+            scrSamplePos.PointerEnter += ScrSamplePos_PointerEnter;
+            scrSamplePos.PointerLeave += ScrSamplePos_PointerLeave;
             mnuNew.Click += MnuNew_Click;
             mnuOpen.Click += mnuOpen_Click;
             mnuSave.Click += mnuSave_Click;
             mnuExit.Click += MnuExit_Click;
             mnuExport.Click += MnuExport_Click;
             mnuNetSettings.Click += MnuNetSettings_Click;
+
+            AddHandler(InputElement.KeyDownEvent, MainWindow_KeyDown, handledEventsToo: true);
+
             LoadAnalyzers();
             RefreshPorts();
         }
 
+        private void MainWindow_KeyDown(object? sender, Avalonia.Input.KeyEventArgs e)
+        {
+            if (e.KeyModifiers == Avalonia.Input.KeyModifiers.Control)
+            {
+                switch (e.Key)
+                {
+                    case Key.Left:
+                        {
+                            var currentVal = scrSamplePos.Value;
+                            var maxVal = sampleViewer.SamplesInScreen;
+                            int newVal = (int)currentVal - (maxVal / 10);
+
+                            if (newVal < 0)
+                                newVal = 0;
+
+                            scrSamplePos.Value = newVal;
+                            scrSamplePos_ValueChanged(scrSamplePos, null);
+                        }
+                        break;
+                    case Key.Right:
+                        {
+                            var currentVal = scrSamplePos.Value;
+                            var maxVal = sampleViewer.SamplesInScreen;
+                            int newVal = (int)currentVal + (maxVal / 10);
+
+                            if (newVal > scrSamplePos.Maximum)
+                                newVal = (int)scrSamplePos.Maximum;
+
+                            scrSamplePos.Value = newVal;
+                            scrSamplePos_ValueChanged(scrSamplePos, null);
+                        }
+                        break;
+                    case Key.Down:
+                        {
+                            var currentVal = scrSamplePos.Value;
+                            var maxVal = sampleViewer.SamplesInScreen;
+                            int newVal = (int)currentVal - maxVal;
+
+                            if (newVal < 0)
+                                newVal = 0;
+
+                            scrSamplePos.Value = newVal;
+                            scrSamplePos_ValueChanged(scrSamplePos, null);
+                        }
+                        break;
+                    case Key.Up:
+                        {
+                            var currentVal = scrSamplePos.Value;
+                            var maxVal = sampleViewer.SamplesInScreen;
+                            int newVal = (int)currentVal + maxVal;
+
+                            if (newVal > scrSamplePos.Maximum)
+                                newVal = (int)scrSamplePos.Maximum;
+
+                            scrSamplePos.Value = newVal;
+                            scrSamplePos_ValueChanged(scrSamplePos, null);
+                        }
+                        break;
+                }
+            }
+            else if (e.KeyModifiers == KeyModifiers.Shift)
+            {
+                switch (e.Key)
+                {
+                    case Key.Left:
+                        {
+                            var currentVal = scrSamplePos.Value;
+                            int newVal = (int)currentVal - 1;
+
+                            if (newVal < 0)
+                                newVal = 0;
+
+                            scrSamplePos.Value = newVal;
+                            scrSamplePos_ValueChanged(scrSamplePos, null);
+                        }
+                        break;
+                    case Key.Right:
+                        {
+                            var currentVal = scrSamplePos.Value;
+                            int newVal = (int)currentVal + 1;
+
+                            if (newVal > scrSamplePos.Maximum)
+                                newVal = (int)scrSamplePos.Maximum;
+
+                            scrSamplePos.Value = newVal;
+                            scrSamplePos_ValueChanged(scrSamplePos, null);
+                        }
+                        break;
+
+                }
+
+            }
+        }
+
         private async void SampleMarker_ShiftSamples(object? sender, EventArgs e)
         {
             var dlg = new ShiftChannelsDialog();
@@ -81,7 +181,7 @@ namespace LogicAnalyzer
 
             if (await dlg.ShowDialog<bool>(this))
             {
-                    var samples = sampleViewer.Samples;
+                var samples = sampleViewer.Samples;
 
                 foreach (var channel in dlg.ShiftedChannels)
                 {
@@ -120,6 +220,8 @@ namespace LogicAnalyzer
                 sampleViewer.BeginUpdate();
                 sampleViewer.Samples = samples;
                 sampleViewer.EndUpdate();
+                samplePreviewer.UpdateSamples(samples, sampleViewer.ChannelCount);
+                samplePreviewer.ViewPosition = sampleViewer.FirstSample;
             }
         }
 
@@ -195,6 +297,9 @@ namespace LogicAnalyzer
 
                 sampleViewer.EndUpdate();
 
+                samplePreviewer.ViewPosition = sampleViewer.FirstSample;
+                samplePreviewer.UpdateSamples(samples, sampleViewer.ChannelCount);
+
                 sampleMarker.VisibleSamples = sampleViewer.SamplesInScreen;
                 sampleMarker.FirstSample = sampleViewer.FirstSample;
                 sampleMarker.ClearRegions();
@@ -331,14 +436,6 @@ namespace LogicAnalyzer
             var lastSample = e.FirstSample + e.SampleCount - 1;
             var triggerSample = sampleViewer.PreSamples - 1;
 
-            var containsTrigger = e.FirstSample <= triggerSample && lastSample >= triggerSample;
-
-            if (containsTrigger)
-            {
-                await this.ShowError("Error", "Cannot delete the trigger sample.");
-                return;
-            }
-
             var preDelete = sampleViewer.Samples.Take(e.FirstSample);
             var postDelete = sampleViewer.Samples.Skip(e.FirstSample + e.SampleCount + 1);
 
@@ -412,7 +509,8 @@ namespace LogicAnalyzer
         {
             sampleViewer.BeginUpdate();
             sampleViewer.Samples = finalSamples;
-            sampleViewer.PreSamples = finalPreSamples;
+            sampleViewer.PreSamples = 0;
+            sampleViewer.Bursts = null;
 
             if (sampleViewer.FirstSample > finalSamples.Length - 1)
                 sampleViewer.FirstSample = finalSamples.Length - 1;
@@ -425,6 +523,9 @@ namespace LogicAnalyzer
 
             sampleViewer.EndUpdate();
 
+            samplePreviewer.UpdateSamples(finalSamples, sampleViewer.ChannelCount);
+            samplePreviewer.ViewPosition = sampleViewer.FirstSample;
+
             sampleMarker.VisibleSamples = sampleViewer.SamplesInScreen;
             sampleMarker.FirstSample = sampleViewer.FirstSample;
             sampleMarker.ClearRegions();
@@ -569,10 +670,30 @@ namespace LogicAnalyzer
                     sampleViewer.SamplesInScreen = Math.Min(100, e.Samples.Length / 10);
 
                 sampleViewer.FirstSample = Math.Max(e.PreSamples - 10, 0);
+
+                if (settings.LoopCount > 0)
+                {
+                    int pos = e.PreSamples;
+                    List<int> bursts = new List<int>();
+
+                    for (int buc = 0; buc < settings.LoopCount; buc++)
+                    {
+                        pos = pos + settings.PostTriggerSamples;
+                        bursts.Add(pos);
+                    }
+
+                    sampleViewer.Bursts = bursts.ToArray();
+                }
+                else
+                    sampleViewer.Bursts = null;
+
                 sampleViewer.ClearRegions();
                 sampleViewer.ClearAnalyzedChannels();
                 sampleViewer.EndUpdate();
 
+                samplePreviewer.UpdateSamples(e.Samples, sampleViewer.ChannelCount);
+                samplePreviewer.ViewPosition = sampleViewer.FirstSample;
+
                 scrSamplePos.Maximum = e.Samples.Length - 1;
                 scrSamplePos.Value = sampleViewer.FirstSample;
                 tkInScreen.Value = sampleViewer.SamplesInScreen;
@@ -844,7 +965,7 @@ namespace LogicAnalyzer
             }
             else
             {
-                var error = driver.StartCapture(settings.Frequency, settings.PreTriggerSamples, settings.PostTriggerSamples, settings.CaptureChannels.Select(c => c.ChannelNumber).ToArray(), settings.TriggerChannel, settings.TriggerInverted);
+                var error = driver.StartCapture(settings.Frequency, settings.PreTriggerSamples, settings.PostTriggerSamples, settings.LoopCount, settings.CaptureChannels.Select(c => c.ChannelNumber).ToArray(), settings.TriggerChannel, settings.TriggerInverted);
 
                 if (error != CaptureError.None)
                 {
@@ -878,7 +999,15 @@ namespace LogicAnalyzer
                     return;
             }
         }
+        private void ScrSamplePos_PointerLeave(object? sender, Avalonia.Input.PointerEventArgs e)
+        {
+            samplePreviewer.IsVisible = false;
+        }
 
+        private void ScrSamplePos_PointerEnter(object? sender, Avalonia.Input.PointerEventArgs e)
+        {
+            samplePreviewer.IsVisible = true;
+        }
         private void scrSamplePos_ValueChanged(object? sender, ScrollEventArgs e)
         {
             if (sampleViewer.Samples != null)
@@ -886,6 +1015,7 @@ namespace LogicAnalyzer
                 sampleViewer.BeginUpdate();
                 sampleViewer.FirstSample = (int)scrSamplePos.Value;
                 sampleViewer.EndUpdate();
+                samplePreviewer.ViewPosition = sampleViewer.FirstSample;
                 sampleMarker.FirstSample = sampleViewer.FirstSample;
             }
         }
@@ -927,7 +1057,11 @@ namespace LogicAnalyzer
                     if (string.IsNullOrWhiteSpace(file))
                         return;
 
-                    ExportedCapture ex = new ExportedCapture { Settings = settings, Samples = sampleViewer.Samples, SelectedRegions = sampleViewer.SelectedRegions };
+                    var sets = settings.Clone();
+                    sets.PreTriggerSamples = sampleViewer.PreSamples;
+                    sets.LoopCount = sampleViewer.Bursts?.Length ?? 0;
+
+                    ExportedCapture ex = new ExportedCapture { Settings = sets, Samples = sampleViewer.Samples, SelectedRegions = sampleViewer.SelectedRegions };
 
                     File.WriteAllText(file, JsonConvert.SerializeObject(ex, new JsonConverter[] { new SampleRegion.SampleRegionConverter() }));
                 }
@@ -980,6 +1114,7 @@ namespace LogicAnalyzer
                                 Frequency = oldset.Frequency,
                                 PostTriggerSamples = oldset.PostTriggerSamples,
                                 PreTriggerSamples = oldset.PreTriggerSamples,
+                                LoopCount = 0,
                                 TriggerBitCount = oldset.TriggerBitCount,
                                 TriggerChannel = oldset.TriggerChannel,
                                 TriggerInverted = oldset.TriggerInverted,
@@ -1015,6 +1150,9 @@ namespace LogicAnalyzer
 
                     sampleViewer.EndUpdate();
 
+                    samplePreviewer.UpdateSamples(ex.Samples, sampleViewer.ChannelCount);
+                    samplePreviewer.ViewPosition = sampleViewer.FirstSample;
+
                     sampleMarker.VisibleSamples = sampleViewer.SamplesInScreen;
                     sampleMarker.FirstSample = sampleViewer.FirstSample;
                     sampleMarker.ClearRegions();

Software/LogicAnalyzer/SharedDriver/EmulatedAnalizerDriver.cs

@@ -62,7 +62,7 @@ namespace SharedDriver
             throw new NotSupportedException();
         }
 
-        public CaptureError StartCapture(int Frequency, int PreSamples, int PostSamples, int[] Channels, int TriggerChannel, bool TriggerInverted, Action<CaptureEventArgs>? CaptureCompletedHandler = null)
+        public CaptureError StartCapture(int Frequency, int PreSamples, int PostSamples, int LoopCount, int[] Channels, int TriggerChannel, bool TriggerInverted, Action<CaptureEventArgs>? CaptureCompletedHandler = null)
         {
             throw new NotSupportedException();
         }

Software/LogicAnalyzer/SharedDriver/IAnalizerDriver.cs

@@ -13,7 +13,7 @@ namespace SharedDriver
         public int Channels { get; }
         public event EventHandler<CaptureEventArgs> CaptureCompleted;
         public bool SendNetworkConfig(string AccesPointName, string Password, string IPAddress, ushort Port);
-        public CaptureError StartCapture(int Frequency, int PreSamples, int PostSamples, int[] Channels, int TriggerChannel, bool TriggerInverted, Action<CaptureEventArgs>? CaptureCompletedHandler = null);
+        public CaptureError StartCapture(int Frequency, int PreSamples, int PostSamples, int LoopCount, int[] Channels, int TriggerChannel, bool TriggerInverted, Action<CaptureEventArgs>? CaptureCompletedHandler = null);
         public CaptureError StartPatternCapture(int Frequency, int PreSamples, int PostSamples, int[] Channels, int TriggerChannel, int TriggerBitCount, UInt16 TriggerPattern, bool Fast, Action<CaptureEventArgs>? CaptureCompletedHandler = null);
         public bool StopCapture();
         public CaptureLimits GetLimits(int[] Channels);

Software/LogicAnalyzer/SharedDriver/LogicAnalyzerDriver.cs

@@ -10,6 +10,7 @@ namespace SharedDriver
 {
     public class LogicAnalyzerDriver : IDisposable, IAnalizerDriver
     {
+        Regex regVersion = new Regex(".*?(V([0-9]+)_([0-9]+))$");
         Regex regAddressPort = new Regex("([0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+)\\:([0-9]+)");
         StreamReader readResponse;
         BinaryReader readData;
@@ -74,7 +75,26 @@ namespace SharedDriver
 
             baseStream.ReadTimeout = 10000;
             DeviceVersion = readResponse.ReadLine();
+
+            var verMatch = regVersion.Match(DeviceVersion ?? "");
+
+            if (verMatch == null || !verMatch.Success || !verMatch.Groups[2].Success)
+            {
+                Dispose();
+                throw new DeviceConnectionException($"Invalid device version V{ (string.IsNullOrWhiteSpace(verMatch?.Value) ? "(unknown)" : verMatch?.Value) }, minimum supported version: V5_0");
+            }
+
+            int majorVer = int.Parse(verMatch.Groups[2].Value);
+
+            if (majorVer < 5)
+            {
+                Dispose();
+                throw new DeviceConnectionException($"Invalid device version V{verMatch.Value}, minimum supported version: V5_0");
+            }
+
             baseStream.ReadTimeout = Timeout.Infinite;
+
+
         }
         private void InitNetwork(string AddressPort)
         {
@@ -138,7 +158,7 @@ namespace SharedDriver
 
             return false;
         }
-        public CaptureError StartCapture(int Frequency, int PreSamples, int PostSamples, int[] Channels, int TriggerChannel, bool TriggerInverted, Action<CaptureEventArgs>? CaptureCompletedHandler = null)
+        public CaptureError StartCapture(int Frequency, int PreSamples, int PostSamples, int LoopCount, int[] Channels, int TriggerChannel, bool TriggerInverted, Action<CaptureEventArgs>? CaptureCompletedHandler = null)
         {
 
             if (capturing)
@@ -159,25 +179,27 @@ namespace SharedDriver
 
             var captureMode = GetCaptureMode(Channels);
 
+            int requestedSamples = PreSamples + (PostSamples * ((byte)LoopCount + 1));
+
             try
             {
                 switch (captureMode)
                 {
                     case 0:
 
-                        if (PreSamples > 98303 || PostSamples > 131069 || PreSamples + PostSamples > 131071)
+                        if (PreSamples > 98303 || PostSamples > 131069 || requestedSamples > 131071)
                             return CaptureError.BadParams;
                         break;
 
                     case 1:
 
-                        if (PreSamples > 49151 || PostSamples > 65533 || PreSamples + PostSamples > 65535)
+                        if (PreSamples > 49151 || PostSamples > 65533 || requestedSamples > 65535)
                             return CaptureError.BadParams;
                         break;
 
                     case 2:
 
-                        if (PreSamples > 24576 || PostSamples > 32765 || PreSamples + PostSamples > 32767)
+                        if (PreSamples > 24576 || PostSamples > 32765 || requestedSamples > 32767)
                             return CaptureError.BadParams;
                         break;
                 }
@@ -197,6 +219,7 @@ namespace SharedDriver
                     frequency = (uint)Frequency,
                     preSamples = (uint)PreSamples,
                     postSamples = (uint)PostSamples,
+                    loopCount = (byte)LoopCount,
                     captureMode = captureMode
                 };
 
@@ -217,7 +240,7 @@ namespace SharedDriver
                 if (result == "CAPTURE_STARTED")
                 {
                     capturing = true;
-                    Task.Run(() => ReadCapture(PreSamples + PostSamples, captureMode));
+                    Task.Run(() => ReadCapture(requestedSamples, captureMode));
                     return CaptureError.None;
                 }
                 return CaptureError.HardwareError;
@@ -547,6 +570,7 @@ namespace SharedDriver
             public UInt32 frequency;
             public UInt32 preSamples;
             public UInt32 postSamples;
+            public byte loopCount;
             public byte captureMode;
         }
 

Software/LogicAnalyzer/SharedDriver/MultiAnalizerDriver.cs

@@ -10,7 +10,7 @@ namespace SharedDriver
 {
     public class MultiAnalizerDriver : IDisposable, IAnalizerDriver
     {
-        Regex regVersion = new Regex(".*?(V[0-9]_[0-9])$");
+        Regex regVersion = new Regex(".*?(V([0-9]+)_([0-9]+))$");
         LogicAnalyzerDriver[] connectedDevices;
 
         UInt128[][]? tempCapture;
@@ -79,7 +79,24 @@ namespace SharedDriver
                 }
 
                 if (ver == null)
+                {
                     ver = mVer.Groups[1].Value;
+
+                    if (mVer == null || !mVer.Success || !mVer.Groups[2].Success)
+                    {
+                        Dispose();
+                        throw new DeviceConnectionException($"Invalid device version V{(string.IsNullOrWhiteSpace(mVer?.Value) ? "(unknown)" : mVer?.Value)}, minimum supported version: V5_0");
+                    }
+
+                    int majorVer = int.Parse(mVer.Groups[2].Value);
+
+                    if (majorVer < 5)
+                    {
+                        Dispose();
+                        throw new DeviceConnectionException($"Invalid device version V{mVer.Value}, minimum supported version: V5_0");
+                    }
+
+                }
                 else
                 {
                     if (ver != mVer.Groups[1].Value)
@@ -96,7 +113,7 @@ namespace SharedDriver
         {
             throw new NotSupportedException();
         }
-        public CaptureError StartCapture(int Frequency, int PreSamples, int PostSamples, int[] Channels, int TriggerChannel, bool TriggerInverted, Action<CaptureEventArgs>? CaptureCompletedHandler = null)
+        public CaptureError StartCapture(int Frequency, int PreSamples, int PostSamples, int LoopCount, int[] Channels, int TriggerChannel, bool TriggerInverted, Action<CaptureEventArgs>? CaptureCompletedHandler = null)
         {
             throw new NotSupportedException();
         }
@@ -163,7 +180,7 @@ namespace SharedDriver
                         continue;
 
                     connectedDevices[buc].Tag = channelsCapturing;
-                    var err = connectedDevices[buc].StartCapture(Frequency, PreSamples + offset, PostSamples - offset, chan, 24, false);
+                    var err = connectedDevices[buc].StartCapture(Frequency, PreSamples + offset, PostSamples - offset, 0, chan, 24, false);
 
                     if (err != CaptureError.None)
                     {