Adding simple FSK Rx Processor. Can be used with New Apps. (#2716)

* Work to allow for unique beacon parsing functions.

* Fixing pull.

* Changes.

* Formatting.

* Fix Copyright

* Update firmware/application/apps/ble_rx_app.cpp

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update firmware/baseband/proc_btlerx.cpp

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* PR suggestions.

* Fix String.

* FSK Rx Improvements. Works for my custom protocol.

* Fix buffer size.

* Refactor

* Formatting.

* Formatting.

* Fixing compiling, and BLE Rx UI/Performance.

* More improvements.

* Fixing stuck state.

* More stuck parsing fix.

* Combining PR changes.

* Improvements from previous PR.

* Fix dbM calculation relative to device RSSI.

* Formatting.

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: TJ <tj.baginski@cognosos.com>

firmware/common/dsp_fir_taps.hpp

@@ -1649,4 +1649,36 @@ static constexpr fir_taps_real<24> taps_BTLE_2M_PHY_decim_0 = {
 
     }},
 };
+
+// Tested to be better at capturing both 4.0 and 5.0 device. Better attenuation at channel end.
+static constexpr fir_taps_real<24> taps_BTLE_Dual_PHY = {
+    .low_frequency_normalized = -750000.0f / 4000000.0f,
+    .high_frequency_normalized = 750000.0f / 4000000.0f,
+    .transition_normalized = 250000.0f / 4000000.0f,
+    .taps = {{3,
+              -5,
+              -97,
+              -144,
+              317,
+              1099,
+              396,
+              -2887,
+              -4814,
+              1912,
+              18134,
+              32767,
+              32767,
+              18134,
+              1912,
+              -4814,
+              -2887,
+              396,
+              1099,
+              317,
+              -144,
+              -97,
+              -5,
+              3}},
+};
+
 #endif /*__DSP_FIR_TAPS_H__*/

firmware/common/message.hpp

@@ -134,6 +134,7 @@ class Message {
         NoaaAptRxConfigure = 77,
         NoaaAptRxStatusData = 78,
         NoaaAptRxImageData = 79,
+        FSKPacket = 80,
         MAX
     };
 
@@ -452,6 +453,17 @@ struct BlePacketData {
     uint8_t dataLen;
 };
 
+struct FskPacketData {
+    int8_t real;
+    int8_t imag;
+    int max_dB;
+    uint8_t data[512];
+    uint16_t dataLen;
+    uint64_t syncWord;
+    float power;
+    float frequency_offset_hz;
+};
+
 class BLEPacketMessage : public Message {
    public:
     constexpr BLEPacketMessage(
@@ -463,6 +475,17 @@ class BLEPacketMessage : public Message {
     BlePacketData* packet{nullptr};
 };
 
+class FSKRxPacketMessage : public Message {
+   public:
+    constexpr FSKRxPacketMessage(
+        FskPacketData* packet)
+        : Message{ID::FSKPacket},
+          packet{packet} {
+    }
+
+    FskPacketData* packet{nullptr};
+};
+
 class CodedSquelchMessage : public Message {
    public:
     constexpr CodedSquelchMessage(
@@ -1127,24 +1150,27 @@ class FSKConfigureMessage : public Message {
 class FSKRxConfigureMessage : public Message {
    public:
     constexpr FSKRxConfigureMessage(
-        const fir_taps_real<24> decim_0_filter,
-        const fir_taps_real<32> decim_1_filter,
-        const fir_taps_real<32> channel_filter,
-        const size_t channel_decimation,
-        const size_t deviation)
+        const uint8_t samplesPerSymbol,
+        const uint32_t syncWord,
+        const uint8_t syncWordLength,
+        const uint32_t preamble,
+        const uint8_t preambleLength,
+        const uint16_t numDataBytes)
         : Message{ID::FSKRxConfigure},
-          decim_0_filter(decim_0_filter),
-          decim_1_filter(decim_1_filter),
-          channel_filter(channel_filter),
-          channel_decimation{channel_decimation},
-          deviation{deviation} {
+          samplesPerSymbol(samplesPerSymbol),
+          syncWord(syncWord),
+          syncWordLength(syncWordLength),
+          preamble(preamble),
+          preambleLength(preambleLength),
+          numDataBytes(numDataBytes) {
     }
 
-    const fir_taps_real<24> decim_0_filter;
-    const fir_taps_real<32> decim_1_filter;
-    const fir_taps_real<32> channel_filter;
-    const size_t channel_decimation;
-    const size_t deviation;
+    const uint8_t samplesPerSymbol;
+    const uint32_t syncWord;
+    const uint8_t syncWordLength;
+    const uint32_t preamble;
+    const uint8_t preambleLength;
+    const uint16_t numDataBytes;
 };
 
 class POCSAGConfigureMessage : public Message {