rtds2gpu: make dump return true if cannot access status register

include/villas/fpga/ips/gpu2rtds.hpp

@@ -19,7 +19,7 @@ public:
 
 	bool init();
 
-	void dump(spdlog::level::level_enum logLevel = spdlog::level::info);
+	bool dump(spdlog::level::level_enum logLevel = spdlog::level::info);
 	bool startOnce(size_t frameSize);
 
 	size_t getMaxFrameSize();

include/villas/fpga/ips/rtds2gpu.hpp

@@ -32,7 +32,7 @@ public:
 
 	bool init();
 
-	void dump(spdlog::level::level_enum logLevel = spdlog::level::info);
+	bool dump(spdlog::level::level_enum logLevel = spdlog::level::info);
 
 	bool startOnce(const MemoryBlock& mem, size_t frameSize, size_t dataOffset, size_t doorbellOffset);
 

lib/ips/rtds2gpu/gpu2rtds.cpp

@@ -39,7 +39,7 @@ Gpu2Rtds::startOnce(size_t frameSize)
 	return true;
 }
 
-void Gpu2Rtds::dump(spdlog::level::level_enum logLevel)
+bool Gpu2Rtds::dump(spdlog::level::level_enum logLevel)
 {
 	const auto frame_size = *registerFrameSize;
 	auto status = *registerStatus;
@@ -54,6 +54,8 @@ void Gpu2Rtds::dump(spdlog::level::level_enum logLevel)
 	logger->log(logLevel, "    Last count:         {}", getStatusLastCount(status));
 	logger->log(logLevel, "    Last seq. number:   {}", status.last_seq_nr);
 	logger->log(logLevel, "    Max. frame size:    {}", getStatusMaxFrameSize(status));
+
+	return true;
 }
 
 //bool Gpu2Rtds::startOnce(const MemoryBlock& mem, size_t frameSize, size_t dataOffset, size_t doorbellOffset)

lib/ips/rtds2gpu/rtds2gpu.cpp

@@ -31,7 +31,7 @@ bool Rtds2Gpu::init()
 
 
 
-void Rtds2Gpu::dump(spdlog::level::level_enum logLevel)
+bool Rtds2Gpu::dump(spdlog::level::level_enum logLevel)
 {
 	const auto baseaddr = XRtds2gpu_Get_baseaddr(&xInstance);
 	const auto data_offset = XRtds2gpu_Get_data_offset(&xInstance);
@@ -40,6 +40,7 @@ void Rtds2Gpu::dump(spdlog::level::level_enum logLevel)
 
 	if(not updateStatus()) {
 		logger->warn("Couldn't read status register (not ready), values may be wrong");
+		return false;
 	}
 
 	logger->log(logLevel, "Rtds2Gpu registers (IP base {:#x}):", xInstance.Ctrl_BaseAddress);
@@ -55,6 +56,8 @@ void Rtds2Gpu::dump(spdlog::level::level_enum logLevel)
 	logger->log(logLevel, "    Last count:         {}", getStatusLastCount(status));
 	logger->log(logLevel, "    Last seq. number:   {}", status.last_seq_nr);
 	logger->log(logLevel, "    Max. frame size:    {}", getStatusMaxFrameSize(status));
+
+	return true;
 }
 
 bool Rtds2Gpu::startOnce(const MemoryBlock& mem, size_t frameSize, size_t dataOffset, size_t doorbellOffset)