fixes

virtual_portal.c

@@ -407,8 +407,8 @@ int virtual_portal_send_status(VirtualPortal* virtual_portal, uint8_t* response)
 
 // 4d01ff0000d0077d6c2a77a400000000
 int virtual_portal_m(VirtualPortal* virtual_portal, uint8_t* message, uint8_t* response) {
-    virtual_portal->speaker = (message[1] == 1);
-
+    // Activate speaker for any non-zero value in the range 01-FF
+    virtual_portal->speaker = (message[1] != 0);
     /*
     char display[33] = {0};
     for(size_t i = 0; i < BLOCK_SIZE; i++) {
@@ -419,7 +419,8 @@ int virtual_portal_m(VirtualPortal* virtual_portal, uint8_t* message, uint8_t* r
 
     size_t index = 0;
     response[index++] = 'M';
-    response[index++] = message[1];
+    // Always respond with 01 if active, 00 if not
+    response[index++] = virtual_portal->speaker ? 0x01 : 0x00;
     response[index++] = 0x00;
     response[index++] = 0x19;
     g72x_init_state(&virtual_portal->state);
@@ -656,14 +657,23 @@ int virtual_portal_process_message(
         case 'M':
             return virtual_portal_m(virtual_portal, message, response);
         case 'Q':  // Query
+            if (!virtual_portal->active) {
+                return 0; // No response if portal is not active
+            }
             return virtual_portal_query(virtual_portal, message, response);
         case 'R':
             return virtual_portal_reset(virtual_portal, message, response);
         case 'S':  // Status
+            if (!virtual_portal->active) {
+                return 0; // No response if portal is not active
+            }
             return virtual_portal_status(virtual_portal, response);
         case 'V':
             return 0;
         case 'W':  // Write
+            if (!virtual_portal->active) {
+                return 0; // No response if portal is not active
+            }
             return virtual_portal_write(virtual_portal, message, response);
         case 'Z':
             return 0;
@@ -673,4 +683,4 @@ int virtual_portal_process_message(
     }
 
     return 0;
-}
+}

virtual_portal.h

@@ -9,7 +9,7 @@
 #define SAMPLE_RATE 8000
 #define POF_TOKEN_LIMIT 16
 #define SAMPLES_COUNT 2048
-#define SAMPLES_COUNT_BUFFERED SAMPLES_COUNT * 32
+#define SAMPLES_COUNT_BUFFERED SAMPLES_COUNT * 4
 
 typedef enum {
     PoFHid,