fix: Internal PXX exclusive S.PORT (#3822)

radio/src/targets/simu/module_drivers.cpp

@@ -23,6 +23,7 @@
 #include "hal/serial_driver.h"
 #include "hal/module_port.h"
 #include "dataconstants.h"
+#include "debug.h"
 
 void intmoduleStop() {}
 void intmoduleFifoError() {}
@@ -60,8 +61,32 @@ void stop_trainer_module_sbus() {}
 void init_intmodule_heartbeat() {}
 void stop_intmodule_heartbeat() {}
 
-static void* init(void*, const etx_serial_init*) { return (void*)1; }
-static void deinit(void*) {}
+static bool _sport_used = false;
+
+static void* init(void* ctx, const etx_serial_init*)
+{
+  if (ctx == nullptr) {
+    return (void*)1;
+  }
+
+  if (ctx == (void*)&_sport_used) {
+    if (_sport_used) {
+      return nullptr;
+    }
+
+    _sport_used = true;
+    return &_sport_used;
+  }
+
+  return nullptr;
+}
+
+static void deinit(void* ctx)
+{
+  if (ctx != (void*)&_sport_used) return;
+  _sport_used = false;
+}
+
 static void sendByte(void*, uint8_t) {}
 static void sendBuffer(void*, const uint8_t*, uint32_t) {}
 static void waitForTxCompleted(void*) {}
@@ -127,7 +152,7 @@ const etx_module_port_t _internal_ports[] = {
     .type = ETX_MOD_TYPE_SERIAL,
     .dir_flags = ETX_MOD_DIR_TX | ETX_MOD_DIR_RX,
     .drv = { .serial = &_fakeSerialDriver },
-    .hw_def = nullptr,
+    .hw_def = &_sport_used,
   },
 #endif
 };
@@ -170,7 +195,7 @@ const etx_module_port_t _external_ports[] = {
     .drv = { .timer = &_fakeTimerDriver },
     .hw_def = nullptr,
   },
-  // TX inverted DMA pulse train on S.PORT
+  // TX inverted DMA pulse train on PPM
   {
     .port = ETX_MOD_PORT_SOFT_INV,
     .type = ETX_MOD_TYPE_SERIAL,
@@ -184,7 +209,7 @@ const etx_module_port_t _external_ports[] = {
     .type = ETX_MOD_TYPE_SERIAL,
     .dir_flags = ETX_MOD_DIR_TX | ETX_MOD_DIR_RX,
     .drv = { .serial = &_fakeSerialDriver },
-    .hw_def = nullptr,
+    .hw_def = &_sport_used,
   },
 #if defined(TELEMETRY_TIMER)
   // RX soft-serial sampled bit-by-bit via timer IRQ on S.PORT