Low frequency RFID app [Read stage] (#385)

* App Lfrfid: init
* HAL-resources: add external gpios
* HAL-pwm: fix frequency calculation
* App LFRFID: generic manchester decoder
* App LFRFID: em-marine decoder
* App iButton: fix dwt timing acquire
* App LFRFID: rfid reader
* App LFRFID: temporary read keys on read scene
* App LFRFID: remove atomic bool init.
* App LFRFID: add *.c to build
* App LFRFID: unstable HID decoder
* App LFRFID: HID-26 reading
* HAL OS: disable sleep
* App LFRFID: HID-26 reader: remove debug
* App LFRFID: static data decoder-analyzer
* App LFRFID: very raw Indala decoder
* App LFRFID: multiprotocol reader
* App LFRFID: more reliable HID decoder
* App LFRFID: syntax fix
* App LFRFID: simple read scene
* Gui: force redraw on screen stream connect
* HAL-OS: allow sleep
* App LFRFID: notify api, tune view, tune scene
* App LFRFID: simple rfid emulator
* App LFRFID: more scenes, more reliable EM decoder.
* App LFRFID: format fix
* App LFRFID: warning fix
* Api-hal-resources: add rfid pins, rename external pins
* App LFRFID: remove unused emulator
* App LFRFID: use new gpio hal api
* App accessor: use new ext gpio name
* App LFRFID: remove unused emulator
* App LFRFID: remove debug gpio
* Api-hal-resources: alternate functions init
* Api-hal-rfid: new api
* Api-hal-ibutton: new api
* Api-hal: new headers
* App LFRFID: use new api in reader subroutines
* App LFRFID: use new api in emulator subroutines
* App LFRFID: remove old app
* App LFRFID, App iButton: fix memleak
* Api-hal-rfid: comments
* App LFRFID: pulse joiner helper, it combines pulses of different polarity into one pulse suitable for a timer
* App LFRFID: pulse joiner, now can accept only ne pulse
* App LFRFID: pulse joiner, fixes
* App LFRFID: EM encoder and emulation
* App LFRFID: format fixes
* App LFRFID: emmarine encoder cleanup
* App LFRFID: HID Encoder blank
* App LFRFID: Indala Encoder blank

3 files changed, 10 insertions, 4 deletions

diff --git a/applications/ibutton/helpers/key-reader.cpp b/applications/ibutton/helpers/key-reader.cpp
index a22cbb5a..8955c647 100644
--- a/applications/ibutton/helpers/key-reader.cpp
+++ b/applications/ibutton/helpers/key-reader.cpp
@@ -140,11 +140,10 @@ void KeyReader::comparator_trigger_callback(void* hcomp, void* comp_ctx) {
     KeyReader* _this = static_cast<KeyReader*>(comp_ctx);
 
     if(hcomp == &hcomp1) {
-        _this->cyfral_decoder.process_front(
-            hal_gpio_get_rfid_in_level(), DWT->CYCCNT - last_dwt_value);
+        uint32_t current_dwt_value = DWT->CYCCNT;
 
-        _this->metakom_decoder.process_front(
-            hal_gpio_get_rfid_in_level(), DWT->CYCCNT - last_dwt_value);
+        _this->cyfral_decoder.process_front(hal_gpio_get_rfid_in_level(), current_dwt_value);
+        _this->metakom_decoder.process_front(hal_gpio_get_rfid_in_level(), current_dwt_value);
 
         last_dwt_value = DWT->CYCCNT;
     }
diff --git a/applications/ibutton/ibutton-app.cpp b/applications/ibutton/ibutton-app.cpp
index 50a52197..ab90c168 100644
--- a/applications/ibutton/ibutton-app.cpp
+++ b/applications/ibutton/ibutton-app.cpp
@@ -197,6 +197,12 @@ iButtonApp::~iButtonApp() {
     cli_delete_command(cli, "tm");
     furi_record_close("cli");
     osMessageQueueDelete(cli_event_result);
+
+    for(std::map<Scene, iButtonScene*>::iterator it = scenes.begin(); it != scenes.end(); ++it) {
+        delete it->second;
+        scenes.erase(it);
+    }
+
     api_hal_power_insomnia_exit();
 }
 
diff --git a/applications/ibutton/scene/ibutton-scene-generic.h b/applications/ibutton/scene/ibutton-scene-generic.h
index 07a23ff2..1c321142 100644
--- a/applications/ibutton/scene/ibutton-scene-generic.h
+++ b/applications/ibutton/scene/ibutton-scene-generic.h
@@ -8,6 +8,7 @@ public:
     virtual void on_enter(iButtonApp* app) = 0;
     virtual bool on_event(iButtonApp* app, iButtonEvent* event) = 0;
     virtual void on_exit(iButtonApp* app) = 0;
+    virtual ~iButtonScene(){};
 
 private:
 };