fix: Missing configurable port code, R9M Access, support FRM303 via mod (#3442)

* Fix configurable external module port

* Added FRM303 support for TX16S via AUX1 mod, i.e. direct connect AUX1 TX/RX to PPM/Heartbeat pins.

---------

Co-authored-by: raphaelcoeffic <raphael.coeffic@frafos.com>

radio/src/hal/module_port.cpp

@@ -31,6 +31,16 @@ extern const uint8_t _n_modules;
 static etx_module_state_t _module_states[MAX_MODULES];
 static uint8_t _module_power;
 
+#if defined(CONFIGURABLE_MODULE_PORT)
+// supplemental configurable port
+static etx_module_port_t _extra_module_port;
+
+void modulePortConfigExtra(const etx_module_port_t* port)
+{
+  memcpy(&_extra_module_port, port, sizeof(_extra_module_port));
+}
+#endif
+
 void modulePortInit()
 {
   memset(_module_states, 0, sizeof(_module_states));
@@ -42,16 +52,6 @@ void modulePortInit()
 #endif
 }
 
-#if defined(CONFIGURABLE_MODULE_PORT)
-// supplemental configurable port
-static etx_module_port_t _extra_module_port;
-
-void modulePortConfigExtra(const etx_module_port_t* port)
-{
-  memcpy(&_extra_module_port, port, sizeof(_extra_module_port));
-}
-#endif
-
 static void modulePortClear(etx_module_state_t* st)
 {
   memset(st, 0, sizeof(etx_module_state_t));

radio/src/pulses/afhds3.cpp

@@ -992,10 +992,18 @@ static void* initModule(uint8_t module)
     module == INTERNAL_MODULE ? ETX_Pol_Normal : ETX_Pol_Inverted;
   mod_st = modulePortInitSerial(module, ETX_MOD_PORT_UART, &params);
 
-  if (module == EXTERNAL_MODULE && !mod_st) {
+#if defined(CONFIGURABLE_MODULE_PORT)
+  if (!mod_st && module == EXTERNAL_MODULE) {
+    // Try Connect using aux serial mod
+    params.polarity = ETX_Pol_Normal;
+    mod_st = modulePortInitSerial(module, ETX_MOD_PORT_UART, &params);
+  }
+#endif
+
+  if (!mod_st && module == EXTERNAL_MODULE) {
     // soft-serial fallback
     params.baudrate = AFHDS3_SOFTSERIAL_BAUDRATE;
-    params.direction = ETX_Dir_RX;
+    params.direction = ETX_Dir_TX;
     period = AFHDS3_SOFTSERIAL_COMMAND_TIMEOUT * 1000 /* us */;
     mod_st = modulePortInitSerial(module, ETX_MOD_PORT_SOFT_INV, &params);
     // TODO: telemetry RX ???

radio/src/pulses/pulses.cpp

@@ -470,7 +470,7 @@ static void pulsesEnableModule(uint8_t module, uint8_t protocol)
       break;
 #endif
 
-#if defined(INTERNAL_MODULE_AFHDS3)
+#if defined(INTERNAL_MODULE_AFHDS3) || defined(AFHDS3)
     case PROTOCOL_CHANNELS_AFHDS3:
       _init_module(module, &afhds3::ProtoDriver);
       break;

radio/src/serial.cpp

@@ -29,6 +29,11 @@
 
 #include "hal/serial_port.h"
 
+#if defined(CONFIGURABLE_MODULE_PORT)
+  #include "hal/module_port.h"
+  #include "tasks/mixer_task.h"
+#endif
+
 #if !defined(BOOT)
   #include "opentx.h"
   #include "lua/lua_api.h"
@@ -257,13 +262,14 @@ static void serialSetCallBacks(int mode, void* ctx, const etx_serial_port_t* por
       etx_module_port_t mod_port;
       memset(&mod_port, 0, sizeof(mod_port));
       auto mod_st = modulePortGetState(EXTERNAL_MODULE);
-      if (mod_st && mod_st->tx.hw_def == port->hw_def) {
+      if (mod_st && mod_st->tx.port &&
+          mod_st->tx.port->hw_def == port->hw_def) {
         // port is in use, let's stop it
         mixerTaskStop();
-        pausePulses();
+        pulsesStop();
         pulsesStopModule(EXTERNAL_MODULE);
         modulePortConfigExtra(&mod_port);
-        resumePulses();
+        pulsesStart();
         mixerTaskStart();
       } else {
         modulePortConfigExtra(&mod_port);
@@ -397,10 +403,12 @@ void serialInit(uint8_t port_nr, int mode)
 #if defined(CONFIGURABLE_MODULE_PORT)
   if (mode == UART_MODE_EXT_MODULE) {
     etx_module_port_t mod_port = {
-      .port = ETX_MOD_PORT_EXTERNAL_UART,
+      .port = ETX_MOD_PORT_UART,
       .type = ETX_MOD_TYPE_SERIAL,
       .dir_flags = ETX_MOD_DIR_TX_RX,
       .drv = { .serial = port->uart },
+      .hw_def = port->hw_def,
+      .set_inverted = nullptr,
     };
     modulePortConfigExtra(&mod_port);
     state->mode = mode;

radio/src/targets/horus/CMakeLists.txt

@@ -193,6 +193,10 @@ if(IMU_LSM6DS33)
   set(AUX_SERIAL OFF)
 endif()
 
+if(AUX_SERIAL)
+  add_definitions(-DCONFIGURABLE_MODULE_PORT)
+endif()
+
 if(NOT INTERNAL_MODULE_PXX1)
   option(ALLOW_TRAINER_MULTI "Allow multimodule to be use as trainer input" OFF)
 endif()