test process_data speed measurement

gui/stmdsp.cpp

@@ -46,6 +46,21 @@ namespace stmdsp
             m_serial.write("R");
     }
 
+    void device::continuous_start_measure() {
+        if (connected())
+            m_serial.write("M");
+    }
+
+    uint32_t device::continuous_start_get_measurement() {
+        uint32_t count = 0;
+        if (connected()) {
+            m_serial.write("m");
+            m_serial.read(reinterpret_cast<uint8_t *>(&count), sizeof(uint32_t));
+        }
+
+        return count;
+    }
+
     std::vector<adcsample_t> device::continuous_read() {
         if (connected()) {
             m_serial.write("s");

gui/stmdsp.hpp

@@ -41,6 +41,8 @@ namespace stmdsp
         std::vector<adcsample_t> sample(unsigned long int count = 1);
 
         void continuous_start();
+        void continuous_start_measure();
+        uint32_t continuous_start_get_measurement();
         std::vector<adcsample_t> continuous_read();
         void continuous_stop();
 

gui/wxmain.cpp

@@ -1,10 +1,15 @@
 #include "wxmain.hpp"
 
 #include <wx/filename.h>
+#include <wx/menu.h>
 #include <wx/sizer.h>
 
 MainFrame::MainFrame() : wxFrame(nullptr, -1, "Hello world", wxPoint(50, 50), wxSize(640, 800))
 {
+    auto menubar = new wxMenuBar;
+    auto menuFile = new wxMenu;
+    menubar->Append(menuFile, "&File");
+    SetMenuBar(menubar);
 
     auto window = new wxBoxSizer(wxVERTICAL);
 
@@ -95,7 +100,7 @@ void MainFrame::onSinglePressed(wxCommandEvent& ce)
 
     if (!m_render_timer->IsRunning()) {
         if (m_device != nullptr && m_device->connected()) {
-            m_device->continuous_start();
+            m_device->continuous_start_measure();
             m_device_samples_future = std::async(std::launch::async,
                                                  []() { return decltype(m_device_samples)(); });
             m_render_timer->Start(1000);
@@ -108,7 +113,8 @@ void MainFrame::onSinglePressed(wxCommandEvent& ce)
         //m_device_samples.clear();
         //this->RefreshRect(m_signal_area->GetRect());
 
-        button->SetLabel("Run");
+        //button->SetLabel("Run");
+        button->SetLabel(wxString::Format(wxT("%u"), m_device->continuous_start_get_measurement()));
     }
 }
 
@@ -199,7 +205,7 @@ all:
                            $0.o
 )make";
 
-static const char *file_header = R"cpp(
+static wxString file_header (R"cpp(
 #include <cstdint>
 
 using adcsample_t = uint16_t;
@@ -213,26 +219,29 @@ extern "C" void process_data_entry()
 
 // End stmdspgui header code
 
-)cpp";
+)cpp");
 
 wxString MainFrame::compileEditorCode()
 {
-    auto file_text = wxString(file_header) + m_text_editor->GetText();
-    auto file_name = wxFileName::CreateTempFileName("stmdspgui");
-    wxFile file (file_name, wxFile::write);
-    file.Write(file_text);
+    static wxString temp_file_name;
+
+    if (temp_file_name.IsEmpty())
+        temp_file_name = wxFileName::CreateTempFileName("stmdspgui");
+
+    wxFile file (temp_file_name, wxFile::write);
+    file.Write(file_header + m_text_editor->GetText());
     file.Close();
 
-    wxFile makefile (file_name + "make", wxFile::write);
+    wxFile makefile (temp_file_name + "make", wxFile::write);
     wxString make_text (makefile_text);
-    make_text.Replace("$0", file_name);
+    make_text.Replace("$0", temp_file_name);
     makefile.Write(make_text);
     makefile.Close();
 
-    wxString make_command = wxString("make -C ") + file_name.BeforeLast('/') +
-                            " -f " + file_name + "make";
+    wxString make_command = wxString("make -C ") + temp_file_name.BeforeLast('/') +
+                            " -f " + temp_file_name + "make";
     if (system(make_command.ToAscii()) == 0)
-        return file_name + ".o";
+        return temp_file_name + ".o";
     else
         return "";
 }

source/adc.cpp

@@ -79,6 +79,11 @@ namespace adc
         adcStartConversion(adcd, &adc_group_config, buffer, count);
         gptStartContinuous(gptd, 5);
     }
+
+    void read_set_operation_func(operation_t operation_func)
+    {
+        adc_operation_func = operation_func;
+    }
     
     void read_stop()
     {

source/adc.hpp

@@ -32,6 +32,7 @@ namespace adc
     void init();
     adcsample_t *read(adcsample_t *buffer, size_t count);
     void read_start(operation_t operation_func, adcsample_t *buffer, size_t count);
+    void read_set_operation_func(operation_t operation_func);
     void read_stop();
     void set_rate(rate r);
 }

source/main.cpp

@@ -29,8 +29,10 @@ enum class RunStatus : char
 };
 static RunStatus run_status = RunStatus::Idle;
 
-#define MSG_CONVFIRST  (1)
-#define MSG_CONVSECOND (2)
+#define MSG_CONVFIRST          (1)
+#define MSG_CONVSECOND         (2)
+#define MSG_CONVFIRST_MEASURE  (3)
+#define MSG_CONVSECOND_MEASURE (4)
 
 static msg_t conversionMBBuffer[8];
 static MAILBOX_DECL(conversionMB, conversionMBBuffer, 8);
@@ -38,6 +40,8 @@ static MAILBOX_DECL(conversionMB, conversionMBBuffer, 8);
 static THD_WORKING_AREA(conversionThreadWA, 1024);
 static THD_FUNCTION(conversionThread, arg);
 
+static time_measurement_t conversion_time_measurement;
+
 static_assert(sizeof(adcsample_t) == sizeof(uint16_t));
 static_assert(sizeof(dacsample_t) == sizeof(uint16_t));
 
@@ -54,6 +58,7 @@ static uint8_t elf_file_store[8192];
 static elf::entry_t elf_entry = nullptr;
 
 static void signal_operate(adcsample_t *buffer, size_t count);
+static void signal_operate_measure(adcsample_t *buffer, size_t count);
 static void main_loop();
 
 int main()
@@ -74,6 +79,7 @@ int main()
     usbserial::init();
 
     // Start the conversion manager thread
+    chTMObjectInit(&conversion_time_measurement);
     chThdCreateStatic(conversionThreadWA, sizeof(conversionThreadWA),
                       NORMALPRIO,
                       conversionThread, nullptr);
@@ -115,6 +121,21 @@ void main_loop()
                     dac::write_start(&dac_samples[0], dac_samples.size());
                     break;
 
+                // 'M' - Begins continuous sampling, but measures the execution time of the first
+                //       sample processing. This duration can be later read through 'm'.
+                case 'M':
+                    run_status = RunStatus::Converting;
+                    dac_samples.fill(0);
+                    adc::read_start(signal_operate_measure, &adc_samples[0], adc_samples.size());
+                    dac::write_start(&dac_samples[0], dac_samples.size());
+                    break;
+
+                // 'm' - Returns the last measured sample processing time, presumably in processor
+                //       ticks.
+                case 'm':
+                    usbserial::write(&conversion_time_measurement.last, sizeof(rtcnt_t));
+                    break;
+
                 // 's' - Sends the current contents of the DAC buffer back over USB.
                 case 's':
                     usbserial::write(dac_samples.data(), 1/*dac_samples.size()*/ * sizeof(dacsample_t));
@@ -216,6 +237,22 @@ THD_FUNCTION(conversionThread, arg)
                 if (!samples)
                     samples = &adc_samples[adc_samples.size() / 2];
                 std::copy(samples, samples + halfsize, &dac_samples[dac_samples.size() / 2]);
+            } else if (message == MSG_CONVFIRST_MEASURE) {
+                chTMStartMeasurementX(&conversion_time_measurement);
+                if (elf_entry)
+                    samples = elf_entry(&adc_samples[adc_samples.size() / 2], halfsize);
+                chTMStopMeasurementX(&conversion_time_measurement);
+                if (!samples)
+                    samples = &adc_samples[adc_samples.size() / 2];
+                std::copy(samples, samples + halfsize, &dac_samples[dac_samples.size() / 2]);
+            } else if (message == MSG_CONVSECOND_MEASURE) {
+                chTMStartMeasurementX(&conversion_time_measurement);
+                if (elf_entry)
+                    samples = elf_entry(&adc_samples[adc_samples.size() / 2], halfsize);
+                chTMStopMeasurementX(&conversion_time_measurement);
+                if (!samples)
+                    samples = &adc_samples[adc_samples.size() / 2];
+                std::copy(samples, samples + halfsize, &dac_samples[dac_samples.size() / 2]);
             }
         }
     }
@@ -229,6 +266,12 @@ void signal_operate(adcsample_t *buffer, [[maybe_unused]] size_t count)
         chMBPostI(&conversionMB, buffer == &adc_samples[0] ? MSG_CONVFIRST : MSG_CONVSECOND);
 }
 
+void signal_operate_measure(adcsample_t *buffer, [[maybe_unused]] size_t count)
+{
+    chMBPostI(&conversionMB, buffer == &adc_samples[0] ? MSG_CONVFIRST_MEASURE : MSG_CONVSECOND_MEASURE);
+    adc::read_set_operation_func(signal_operate);
+}
+
 extern "C" {
 
 __attribute__((naked))