POCSAG address filter now ignores alpha messages

Experimenting with FIFOs for replay...

firmware/common/buffer_exchange.cpp

@@ -21,17 +21,32 @@
 
 #include "buffer_exchange.hpp"
 
+// DEBUG:
+#include "hackrf_gpio.hpp"
+using namespace hackrf::one;
+
 BufferExchange* BufferExchange::obj { nullptr };
 
 BufferExchange::BufferExchange(
 	CaptureConfig* const config
-) : config { config }
+)	// : config_capture { config }
 {
 	obj = this;
+	direction = CAPTURE;
 	fifo_buffers_for_baseband = config->fifo_buffers_empty;
 	fifo_buffers_for_application = config->fifo_buffers_full;
 }
 
+BufferExchange::BufferExchange(
+	ReplayConfig* const config
+)	// : config_replay { config }
+{
+	obj = this;
+	direction = REPLAY;
+	fifo_buffers_for_baseband = config->fifo_buffers_full;
+	fifo_buffers_for_application = config->fifo_buffers_empty;
+}
+
 BufferExchange::~BufferExchange() {
 	obj = nullptr;
 	fifo_buffers_for_baseband = nullptr;
@@ -42,6 +57,9 @@ StreamBuffer* BufferExchange::get(FIFO<StreamBuffer*>* fifo) {
 	while(true) {
 		StreamBuffer* p { nullptr };
 		fifo->out(p);
+		
+		led_tx.on();	// DEBUG
+		
 		if( p ) {
 			return p;
 		}

firmware/common/buffer_exchange.hpp

@@ -30,6 +30,7 @@
 class BufferExchange {
 public:
 	BufferExchange(CaptureConfig* const config);
+	BufferExchange(ReplayConfig* const config);
 	~BufferExchange();
 
 	BufferExchange(const BufferExchange&) = delete;
@@ -72,16 +73,25 @@ public:
 	}
 
 private:
-	CaptureConfig* const config;
+	//CaptureConfig* const config_capture;
+	//ReplayConfig* const config_replay;
 	FIFO<StreamBuffer*>* fifo_buffers_for_baseband { nullptr };
 	FIFO<StreamBuffer*>* fifo_buffers_for_application { nullptr };
 	Thread* thread { nullptr };
 	static BufferExchange* obj;
+	
+	enum {
+		CAPTURE,
+		REPLAY
+	} direction { };
 
 	void check_fifo_isr() {
-		if( !empty() ) {
+		//if (!empty() && (direction == CAPTURE)) {
+		if (!empty())
 			wakeup_isr();
-		}
+		//} else if (!empty() && (direction == REPLAY)) {
+		//	wakeup_isr();
+		//}
 	}
 
 	void wakeup_isr() {

firmware/common/message.hpp

@@ -458,10 +458,21 @@ public:
 		used_ += copy_size;
 		return copy_size;
 	}
+	
+	size_t read(void* p, const size_t count) {
+		const auto copy_size = std::min(used_, count);
+		memcpy(p, &data_[used_ - copy_size], copy_size);
+		used_ -= copy_size;
+		return copy_size;
+	}
 
 	bool is_full() const {
 		return used_ >= capacity_;
 	}
+	
+	bool is_empty() const {
+		return used_ == 0;
+	}
 
 	void* data() const {
 		return data_;
@@ -525,7 +536,7 @@ public:
 struct ReplayConfig {
 	const size_t read_size;
 	const size_t buffer_count;
-	uint64_t baseband_bytes_sent;
+	uint64_t baseband_bytes_received;
 	FIFO<StreamBuffer*>* fifo_buffers_empty;
 	FIFO<StreamBuffer*>* fifo_buffers_full;
 
@@ -534,7 +545,7 @@ struct ReplayConfig {
 		const size_t buffer_count
 	) : read_size { read_size },
 		buffer_count { buffer_count },
-		baseband_bytes_sent { 0 },
+		baseband_bytes_received { 0 },
 		fifo_buffers_empty { nullptr },
 		fifo_buffers_full { nullptr }
 	{