Add badgesdr source and add logging to spectran source

source_modules/badgesdr_source/src/badgesdr.h

@@ -0,0 +1,53 @@
+#pragma once
+#include <string>
+#include <vector>
+#include <memory>
+#include <thread>
+#include <libusb.h>
+#include "r820t.h"
+
+namespace BadgeSDR {
+    struct DeviceInfo {
+        std::string serialNumber;
+        libusb_device* dev;
+        bool operator==(const DeviceInfo& b) const;
+    };
+
+    class Device {
+    public:
+        Device(libusb_device_handle* dev);
+        ~Device();
+
+        void setFrequency(double freq);
+        void setLNAGain(int gain);
+        void setMixerGain(int gain);
+        void setVGAGain(int gain);
+        
+        void start(void (*callback)(const uint8_t* samples, int count, void* ctx), void* ctx = NULL, int minBufferSize = 2500);
+        void stop();
+
+    private:
+        int getI2CStatus();
+        int readI2C(uint8_t addr, uint8_t* data, int len);
+        int writeI2C(uint8_t addr, const uint8_t* data, int len);
+        uint8_t readR820TReg(uint8_t reg);
+        void writeR820TReg(uint8_t reg, uint8_t val);
+        int startADC();
+        int stopADC();
+        void worker();
+
+        libusb_device_handle* dev;
+        std::thread workerThread;
+        bool run = false;
+        int bufferSize = 0; // Must be multiple of 64 for best performance
+        void* ctx = NULL;
+        void (*callback)(const uint8_t* samples, int count, void* ctx);
+
+        static void write_reg(uint8_t reg, uint8_t value, void* ctx);
+        static void read_reg(uint8_t* data, int len, void* ctx);
+        r820t_priv_t r820t;
+    };
+
+    std::vector<DeviceInfo> list();
+    std::shared_ptr<Device> open(const DeviceInfo& dev);
+}