diff --git a/software/firmware/source/SoftRF/src/platform/STM32.cpp b/software/firmware/source/SoftRF/src/platform/STM32.cpp
index 80044c1f6..e359e2e84 100644
--- a/software/firmware/source/SoftRF/src/platform/STM32.cpp
+++ b/software/firmware/source/SoftRF/src/platform/STM32.cpp
@@ -53,7 +53,7 @@ lmic_pinmap lmic_pins = {
     .rst = SOC_GPIO_PIN_RST,
     .dio = {SOC_GPIO_PIN_DIO0, LMIC_UNUSED_PIN, LMIC_UNUSED_PIN},
 #endif
-    .busy = LMIC_UNUSED_PIN,
+    .busy = SOC_GPIO_PIN_BUSY,
     .tcxo = LMIC_UNUSED_PIN,
 };
 
@@ -523,6 +523,10 @@ static void STM32_setup()
     }
 #endif /* ARDUINO_NUCLEO_L073RZ || ARDUINO_GENERIC_WLE5CCUX */
 
+#if defined(USE_RADIOLIB)
+    lmic_pins.dio[0] = SOC_GPIO_PIN_DIO0;
+#endif /* USE_RADIOLIB */
+
     Serial.begin(SERIAL_OUT_BR, SERIAL_OUT_BITS);
 
 #if defined(USBD_USE_CDC) && !defined(DISABLE_GENERIC_SERIALUSB)
diff --git a/software/firmware/source/SoftRF/src/platform/STM32.h b/software/firmware/source/SoftRF/src/platform/STM32.h
index ffbb2ebf6..4febf96b7 100644
--- a/software/firmware/source/SoftRF/src/platform/STM32.h
+++ b/software/firmware/source/SoftRF/src/platform/STM32.h
@@ -44,10 +44,12 @@ extern char *dtostrf_workaround(double, signed char, unsigned char, char *);
 #define uni_Color(r,g,b)        strip.Color(r,g,b)
 #define color_t                 uint32_t
 
-#define yield()                 ({ })
 #define snprintf_P              snprintf
 #define EEPROM_commit()         {}
 
+//#define yield()                 ({ })
+inline  void yield()            { };
+
 #define AN3155_BR               115200
 #define AN3155_BITS             SERIAL_8E1
 
@@ -173,13 +175,16 @@ typedef struct stm32_backup_struct {
 //#define USE_OGN_ENCRYPTION
 #define EXCLUDE_LK8EX1
 #define EXCLUDE_IMU
+//#define USE_RADIOLIB
 
 //#define ENFORCE_S78G
 #define USE_TIME_SLOTS
 
 /* Experimental */
 #define ENABLE_ADSL              //  +  2 kb
+#if !defined(USE_RADIOLIB)
 #define ENABLE_PROL              //  + 18 kb
+#endif /* USE_RADIOLIB */
 
 /* Secondary target ("Blue pill") */
 #elif defined(ARDUINO_BLUEPILL_F103CB)
@@ -287,6 +292,7 @@ typedef struct stm32_backup_struct {
 
 #define USE_BASICMAC             //  +  7 kb
 #define EXCLUDE_SX1276           //  -  3 kb
+//#define USE_RADIOLIB
 
 #define USE_TIME_SLOTS
 #define USE_OGN_ENCRYPTION
@@ -343,6 +349,7 @@ typedef struct stm32_backup_struct {
 
 #define USE_BASICMAC             //  +  7 kb
 #define EXCLUDE_SX1276           //  -  3 kb
+//#define USE_RADIOLIB
 
 #define USE_TIME_SLOTS
 
diff --git a/software/firmware/source/SoftRF/src/platform/iomap/Blue_Pill.h b/software/firmware/source/SoftRF/src/platform/iomap/Blue_Pill.h
index a62c2d719..f825f0973 100644
--- a/software/firmware/source/SoftRF/src/platform/iomap/Blue_Pill.h
+++ b/software/firmware/source/SoftRF/src/platform/iomap/Blue_Pill.h
@@ -32,6 +32,9 @@
 #define SOC_GPIO_PIN_RST      PB5
 #define SOC_GPIO_PIN_DIO0     PB4
 
+/* SX1262 */
+#define SOC_GPIO_PIN_BUSY     LMIC_UNUSED_PIN
+
 /* RF antenna switch */
 #define SOC_GPIO_PIN_ANT_RXTX LMIC_UNUSED_PIN
 
diff --git a/software/firmware/source/SoftRF/src/platform/iomap/LilyGO_TMotion.h b/software/firmware/source/SoftRF/src/platform/iomap/LilyGO_TMotion.h
index 0620a6446..628c52d53 100644
--- a/software/firmware/source/SoftRF/src/platform/iomap/LilyGO_TMotion.h
+++ b/software/firmware/source/SoftRF/src/platform/iomap/LilyGO_TMotion.h
@@ -41,6 +41,9 @@
 #define SOC_GPIO_PIN_DIO4     PB3
 #define SOC_GPIO_PIN_DIO5     PA15
 
+/* SX1262 */
+#define SOC_GPIO_PIN_BUSY     LMIC_UNUSED_PIN
+
 /* RF antenna switch */
 #define SOC_GPIO_PIN_ANT_RXTX PA1 // 1:Rx, 0:Tx
 
diff --git a/software/firmware/source/SoftRF/src/platform/iomap/Olimex_STM32WL.h b/software/firmware/source/SoftRF/src/platform/iomap/Olimex_STM32WL.h
index 0d6533893..761545f2e 100644
--- a/software/firmware/source/SoftRF/src/platform/iomap/Olimex_STM32WL.h
+++ b/software/firmware/source/SoftRF/src/platform/iomap/Olimex_STM32WL.h
@@ -25,6 +25,7 @@
 /* SX1262 */
 #define SOC_GPIO_PIN_RST      LMIC_UNUSED_PIN
 #define SOC_GPIO_PIN_BUSY     LMIC_UNUSED_PIN
+#define SOC_GPIO_PIN_DIO0     LMIC_UNUSED_PIN
 #define SOC_GPIO_PIN_DIO1     LMIC_UNUSED_PIN
 
 /* RF antenna switch */
diff --git a/software/firmware/source/SoftRF/src/platform/iomap/RAK_3172.h b/software/firmware/source/SoftRF/src/platform/iomap/RAK_3172.h
index f4afcd05a..d1536881b 100644
--- a/software/firmware/source/SoftRF/src/platform/iomap/RAK_3172.h
+++ b/software/firmware/source/SoftRF/src/platform/iomap/RAK_3172.h
@@ -26,6 +26,7 @@
 /* SX1262 */
 #define SOC_GPIO_PIN_RST      LMIC_UNUSED_PIN
 #define SOC_GPIO_PIN_BUSY     LMIC_UNUSED_PIN
+#define SOC_GPIO_PIN_DIO0     LMIC_UNUSED_PIN
 #define SOC_GPIO_PIN_DIO1     LMIC_UNUSED_PIN
 
 /* RF antenna switch */