more experiments

src/keyer.cpp

@@ -44,9 +44,21 @@ void Keyer::run()
     switch (state)
     {
     case State::Wait:
-        if (left_paddle_pressed()) {
+        if (left_paddle_pressed() && right_paddle_pressed())
+        {
+            if (m_lastSymbolWas == Symbol::Dit) {
+                state = State::Dah;
+            } else if (m_lastSymbolWas == Symbol::Dah) {
                 state = State::Dit;
-        } else if (right_paddle_pressed()) {
+            }
+            break;
+        }
+        if (left_paddle_pressed())
+        {
+            state = State::Dit;
+        }
+        else if (right_paddle_pressed())
+        {
             state = State::Dah;
         }
         break;
@@ -56,6 +68,7 @@ void Keyer::run()
             m_currentlyKeying = true;
             m_keying_until = make_timeout_time_us(m_elementDuration);
             gpio_put(LED_PIN, 1);
+            m_lastSymbolWas = Symbol::Dit;
         }
         else
         {
@@ -69,11 +82,15 @@ void Keyer::run()
         }
         break;
     case State::Dah:
-        if(!m_currentlyKeying) {
+        if (!m_currentlyKeying)
+        {
             m_currentlyKeying = true;
             m_keying_until = make_timeout_time_us(m_elementDuration * 3);
             gpio_put(LED_PIN, 1);
-        } else {
+            m_lastSymbolWas = Symbol::Dah;
+        }
+        else
+        {
             if (absolute_time_diff_us(timestamp, m_keying_until) <= 0)
             {
                 m_currentlyKeying = false;
@@ -81,7 +98,6 @@ void Keyer::run()
                 m_previousState = State::Dah;
                 state = State::InterCharSpace;
             }
-
         }
         break;
     case State::InterCharSpace:
@@ -91,7 +107,8 @@ void Keyer::run()
             m_previousState = State::InterCharSpace;
         }
 
-        if(absolute_time_diff_us(timestamp, m_pausing_until) <= 0) {
+        if (absolute_time_diff_us(timestamp, m_pausing_until) <= 0)
+        {
             state = State::Wait;
         }
 

src/keyer.h

@@ -17,6 +17,11 @@ public:
     void run();
 
 private:
+    enum class Symbol
+    {
+        Dit,
+        Dah
+    };
     Keyer(){};
     State state{State::Wait};
     State m_previousState{State::Wait};
@@ -25,7 +30,7 @@ private:
     bool m_currentlyKeying{false};
     absolute_time_t m_keying_until{0};
     absolute_time_t m_pausing_until{0};
+    Symbol m_lastSymbolWas{Symbol::Dit};
 };
 
-
 #endif

src/pico_keyer.cpp

@@ -45,7 +45,7 @@ int main()
     // printf("Element duration (u_sec): %" PRIu64 "\n", element_duration_us(settings.wpm));
     printf("\n");
 
-    Keyer keyer(settings.wpm);
+    Keyer keyer(15);
 
     while (true)
     {

src/settings.h

@@ -16,7 +16,7 @@ struct Settings
 {
     uint16_t magic_number{MAGIC_NUMBER};   // Bytes:  2
     Mode mode{Mode::IAMBIC_B};             // Bytes:  1
-    uint8_t wpm{20};                       // Bytes:  1
+    uint8_t wpm{18};                       // Bytes:  1
     uint8_t dummy[FLASH_PAGE_SIZE - 4]{0}; // Sum  :  4
 };