Flipper fsk tx support (#2964)

firmware/application/baseband_api.cpp

@@ -383,6 +383,11 @@ void set_morsetx_key(bool key_down) {
     send_message(&message);
 }
 
+void set_bitstream_config(uint32_t deviation, uint8_t mode) {
+    const StreamTXConfigurationMessage message{deviation, mode};
+    send_message(&message);
+}
+
 static bool baseband_image_running = false;
 
 void run_image(const spi_flash::image_tag_t image_tag) {

firmware/application/baseband_api.hpp

@@ -108,6 +108,7 @@ void set_morsetx_key(bool key_down);
 void set_wefax_config(uint8_t lpm, uint8_t ioc);
 void set_noaaapt_config();
 void set_flex_config();
+void set_bitstream_config(uint32_t deviation, uint8_t mode);  // mode 0 for am, 1 for 2fsk
 
 void request_roger_beep();
 void request_rssi_beep();

firmware/application/external/flippertx/ui_flippertx.cpp

@@ -80,7 +80,7 @@ bool FlipperTxView::on_file_changed(std::filesystem::path new_file_path) {
         return false;
     }
     preset = submeta.value().preset;
-    if (preset != FLIPPER_PRESET_OOK) {
+    if (preset != FLIPPER_PRESET_OOK && preset != FLIPPER_PRESET_2FSK) {
         field_filename.set_text("File: err, not supp. preset");
         return false;
     }
@@ -108,8 +108,13 @@ void FlipperTxView::stop() {
 bool FlipperTxView::start() {
     if (filename.empty()) return false;
     baseband::run_prepared_image(portapack::memory::map::m4_code.base());
+    transmitter_model.set_sampling_rate(OOK_SAMPLERATE);
     transmitter_model.enable();
     button_startstop.set_text(LanguageHelper::currentMessages[LANG_STOP]);
+    uint8_t mode = 0;
+    if (preset == FLIPPER_PRESET_2FSK)
+        mode = 1;
+    baseband::set_bitstream_config(FM_DEVIATION, mode);
     // start thread
     replay_thread = std::make_unique<FlipperPlayThread>(
         filename,

firmware/application/external/flippertx/ui_flippertx.hpp

@@ -28,6 +28,8 @@ using namespace ui;
 namespace ui::external_app::flippertx {
 
 #define OOK_SAMPLERATE 2280000U
+#define FM_DEVIATION 60000U
+
 class FlipperPlayThread;
 class FlipperTxView : public View {
    public:

firmware/baseband/CMakeLists.txt

@@ -618,12 +618,12 @@ set(MODE_CPPSRC
 )
 DeclareTargets(PADT adsbtx)
 
-### OOKStream
+### Binary Timed stream TX
 
 set(MODE_CPPSRC
-	proc_ook_stream_tx.cpp
+	proc_bint_stream_tx.cpp
 )
-DeclareTargets(POSK ookstream)
+DeclareTargets(POSK bintstream)
 
 
 ### Signal generator

firmware/baseband/proc_bint_stream_tx.cpp

@@ -19,7 +19,7 @@
  * Boston, MA 02110-1301, USA.
  */
 
-#include "proc_ook_stream_tx.hpp"
+#include "proc_bint_stream_tx.hpp"
 #include "sine_table_int8.hpp"
 #include "portapack_shared_memory.hpp"
 
@@ -27,27 +27,35 @@
 
 #include "utility.hpp"
 
-OOKProcessorStreamed::OOKProcessorStreamed() {
+BinaryTimedProcessorStreamed::BinaryTimedProcessorStreamed() {
     configured = false;
     baseband_thread.start();
 }
 
-inline void OOKProcessorStreamed::write_sample(const buffer_c8_t& buffer, bool bit_value, size_t i) {
-    int8_t re, im;
-
-    if (bit_value) {
-        phase = (phase + 200);  // What ?
+inline void BinaryTimedProcessorStreamed::write_sample(const buffer_c8_t& buffer, bool bit_value, size_t i) {
+    int8_t re = 0, im = 0;
+    if (mode == 0) {
+        if (bit_value) {
+            phase = (phase + 200);
+            sphase = phase + (64 << 18);
+            re = (sine_table_i8[(sphase & 0x03FC0000) >> 18]);
+            im = (sine_table_i8[(phase & 0x03FC0000) >> 18]);
+        }
+    } else if (mode == 1) {
+        // calculate the re, im based on the deviation uint32_t variable to get the re, im, to send out 2fsk signal. based on the bit_value
+        if (bit_value) {
+            phase += deviation_delta;
+        } else {
+            phase -= deviation_delta;
+        }
         sphase = phase + (64 << 18);
         re = (sine_table_i8[(sphase & 0x03FC0000) >> 18]);
         im = (sine_table_i8[(phase & 0x03FC0000) >> 18]);
-    } else {
-        re = 0;
-        im = 0;
     }
     buffer.p[i] = {re, im};
 }
 
-void OOKProcessorStreamed::execute(const buffer_c8_t& buffer) {
+void BinaryTimedProcessorStreamed::execute(const buffer_c8_t& buffer) {
     if (!configured || !stream) return;
 
     for (size_t i = 0; i < buffer.count; i++) {
@@ -87,7 +95,7 @@ void OOKProcessorStreamed::execute(const buffer_c8_t& buffer) {
     }
 }
 
-void OOKProcessorStreamed::on_message(const Message* const message) {
+void BinaryTimedProcessorStreamed::on_message(const Message* const message) {
     switch (message->id) {
         case Message::ID::ReplayConfig:
             configured = false;
@@ -100,12 +108,23 @@ void OOKProcessorStreamed::on_message(const Message* const message) {
             shared_memory.application_queue.push(txprogress_message);
             break;
 
+        case Message::ID::StreamTXConfiguration:
+            streamtx_config(*reinterpret_cast<const StreamTXConfigurationMessage*>(message));
+            break;
+
         default:
             break;
     }
 }
 
-void OOKProcessorStreamed::replay_config(const ReplayConfigMessage& message) {
+void BinaryTimedProcessorStreamed::streamtx_config(const StreamTXConfigurationMessage& message) {
+    mode = message.mode;
+    deviation = message.deviation;
+    uint64_t big_calc = (uint64_t)message.deviation << 26;
+    deviation_delta = (uint32_t)(big_calc / OOK_SAMPLERATE);
+}
+
+void BinaryTimedProcessorStreamed::replay_config(const ReplayConfigMessage& message) {
     if (message.config) {
         txprogress_message.progress = -2;
         shared_memory.application_queue.push(txprogress_message);
@@ -121,7 +140,7 @@ void OOKProcessorStreamed::replay_config(const ReplayConfigMessage& message) {
 }
 
 int main() {
-    EventDispatcher event_dispatcher{std::make_unique<OOKProcessorStreamed>()};
+    EventDispatcher event_dispatcher{std::make_unique<BinaryTimedProcessorStreamed>()};
     event_dispatcher.run();
     return 0;
 }

firmware/baseband/proc_bint_stream_tx.hpp

@@ -34,10 +34,11 @@
 #include <memory>
 
 #define OOK_SAMPLERATE 2280000U
+#define FM_DEVIATION 60000U
 
-class OOKProcessorStreamed : public BasebandProcessor {
+class BinaryTimedProcessorStreamed : public BasebandProcessor {
    public:
-    OOKProcessorStreamed();
+    BinaryTimedProcessorStreamed();
 
     void execute(const buffer_c8_t& buffer) override;
     void on_message(const Message* const message) override;
@@ -53,6 +54,11 @@ class OOKProcessorStreamed : public BasebandProcessor {
     std::unique_ptr<StreamOutput> stream{};
     bool configured{false};
     void replay_config(const ReplayConfigMessage& message);
+    void streamtx_config(const StreamTXConfigurationMessage& message);
+
+    uint8_t mode = 0;                   // am = 0, 2fsk = 1
+    uint32_t deviation = FM_DEVIATION;  // used in 2fsk
+    uint32_t deviation_delta = (FM_DEVIATION * 4294967296ULL) / OOK_SAMPLERATE;
 
     int32_t endsignals[3] = {0, 42069, 613379};  // 0 is skipped, count from 1, don't ask...
     uint8_t readerrs = 0;                        // to count in the array

firmware/common/message.hpp

@@ -152,6 +152,7 @@ class Message {
         TXDisabled = 94,
         MorseTXConfigure = 95,
         MorseTXkey = 96,
+        StreamTXConfiguration = 97,
         MAX
     };
 
@@ -1758,4 +1759,15 @@ class MorseTXkeyMessage : public Message {
     bool key_down = false;
 };
 
+class StreamTXConfigurationMessage : public Message {
+   public:
+    constexpr StreamTXConfigurationMessage(uint32_t deviation, uint8_t mode)
+        : Message{ID::StreamTXConfiguration},
+          deviation{deviation},
+          mode{mode} {}
+
+    uint32_t deviation = 60000;  // used in 2fsk
+    uint8_t mode = 0;            // am = 0, 2fsk = 1
+};
+
 #endif /*__MESSAGE_H__*/