support SBUS instead PWM

main/rcsignal.h

@@ -11,6 +11,15 @@
 #include <stdint.h>
 #include <stdbool.h>
 
+// Define to switch between PWM and SBUS mode
+// Comment out to use PWM mode, uncomment to use SBUS mode
+#define USE_SBUS_MODE
+
+#ifdef USE_SBUS_MODE
+#define SBUS_NUM_CHANNELS 16   // SBUS supports 16 proportional channels
+#define SBUS_TRIGGER_CHANNEL 3 // Channel 4 (index 3) for mode trigger
+#endif
+
 /**
  * @brief Callback function type for mode changes
  */
@@ -52,4 +61,18 @@ bool rcsignal_is_active(void);
  */
 uint8_t rcsignal_get_current_mode(void);
 
+#ifdef USE_SBUS_MODE
+/**
+ * @brief Get SBUS channel value
+ * @param channel Channel index (0-15)
+ * @return Channel value (172-1811) or 0 if invalid
+ */
+uint16_t rcsignal_get_sbus_channel(uint8_t channel);
+
+/**
+ * @brief Debug function to print all SBUS channels
+ */
+void rcsignal_debug_print_channels(void);
+#endif
+
 #endif // RCSIGNAL_H