Diff: ES_CW2_Starter_STARFISH/SerialCommunication.h

Revision:

11:038d3ba0d720

Child:

13:f6e37c21d31d

diff -r 3669e3d832ed -r 038d3ba0d720 ES_CW2_Starter_STARFISH/SerialCommunication.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ES_CW2_Starter_STARFISH/SerialCommunication.h	Fri Mar 06 14:27:16 2020 +0000
@@ -0,0 +1,87 @@
+
+// Serial port variables
+std::string buffer_serial = ""; 
+RawSerial pc(USBTX, USBRX);
+char command_category;
+Mail<uint8_t, 8> inCharQ;
+float NewRotation; 
+float NewSpeed; 
+uint64_t NewKey;
+
+// Serial port methods
+
+// Decode characters in the serial buffer
+void decode_serial_buffer(std::string serial_buffer); 
+// Thread that receives character one by one until \r is received
+void thread_processor_callback(); 
+// ISR -  Interrupt service routine for the Serial communication
+void serialISR(); 
+
+
+void decode_serial_buffer(std::string serial_buffer)
+{   
+    command_category = serial_buffer[0]; 
+    switch (command_category)
+    {
+    case 'R':
+        // Rotation command - R-?\d{1,s4}(\.\d)?
+        Rotation_mutex.lock(); 
+        sscanf(serial_buffer.c_str(), "%c %f", &command_category, &NewRotation); 
+        pc.printf("You have a new rotation: %f \r\n", NewRotation);
+        Rotation_mutex.unlock(); 
+
+        break;
+    case 'V':
+        // Speed command - V\d{1,3}(\.\d)?
+        Speed_mutex.lock();
+        sscanf(serial_buffer.c_str(), "%c %f", &command_category, &NewSpeed); 
+        pc.printf("You have a new speed: %f \r\n", NewSpeed);
+        Speed_mutex.unlock(); 
+        // to implement !
+        break;
+
+    case 'K':
+        // Bitcoin key command - K[0-9a-fA-F]{16}
+        NewKey_mutex.lock();
+        sscanf(serial_buffer.c_str(), "%c %llx", &command_category, &NewKey); 
+        pc.printf("You have entered a new bitcoin key: %llu \r\n",(long long) NewKey);
+        NewKey_mutex.unlock();
+        break;
+
+    case 'T':
+        // Melody command - T([A-G][#^]?[1-8]){1,16}
+        Music_mutex.lock();
+        pc.printf("You have entered a new melody: --> TO IMPLEMENT <--- \r\n");
+        Music_mutex.unlock(); 
+        // to implement !
+
+    default:
+        printf("Input value out of format - please try again! \r\n");
+    }
+}
+
+// Thread processor raw serial inputs:
+void thread_processor_callback()
+{
+    while (true)
+    {
+        osEvent evt = inCharQ.get();
+        uint8_t *newChar = (uint8_t *)evt.value.p;
+        buffer_serial += (*newChar); 
+        //Store the new character
+        if (buffer_serial.back() == '\r')
+          {
+            buffer_serial += '\0';
+            decode_serial_buffer(buffer_serial);
+            buffer_serial = ""; 
+            }
+        inCharQ.free(newChar);
+    }
+}
+
+void serialISR()
+{   
+    uint8_t *newChar = inCharQ.alloc();
+    *newChar = pc.getc();
+    inCharQ.put(newChar);
+}
\ No newline at end of file