[FL-1505] Add RAW format (#576)

* Add RAW format
* F5 stubs for build to pass
* Fix saving decoded signal error
* Irda: set ISR before starting timer, remove explicit NVIC configuration

Co-authored-by: あく <alleteam@gmail.com>

lib/irda/encoder_decoder/rc6/irda_encoder_rc6.c

@@ -0,0 +1,59 @@
+#include "furi/memmgr.h"
+#include "irda.h"
+#include "irda_common_i.h"
+#include "irda_protocol_defs_i.h"
+#include <stdint.h>
+#include "../irda_i.h"
+
+typedef struct IrdaEncoderRC6 {
+    IrdaCommonEncoder* common_encoder;
+    bool toggle_bit;
+} IrdaEncoderRC6;
+
+void irda_encoder_rc6_reset(void* encoder_ptr, const IrdaMessage* message) {
+    furi_assert(encoder_ptr);
+
+    IrdaEncoderRC6* encoder = encoder_ptr;
+    IrdaCommonEncoder* common_encoder = encoder->common_encoder;
+    irda_common_encoder_reset(common_encoder);
+
+    uint32_t* data = (void*) common_encoder->data;
+    *data |= 0x01;    // start bit
+    (void) *data;     // 3 bits for mode == 0
+    *data |= encoder->toggle_bit ? 0x10 : 0;
+    *data |= reverse(message->address) << 5;
+    *data |= reverse(message->command) << 13;
+
+    encoder->toggle_bit ^= 1;
+}
+
+IrdaStatus irda_encoder_rc6_encode(void* encoder_ptr, uint32_t* duration, bool* level) {
+    IrdaEncoderRC6* encoder = encoder_ptr;
+    return irda_common_encode(encoder->common_encoder, duration, level);
+}
+
+void* irda_encoder_rc6_alloc(void) {
+    IrdaEncoderRC6* encoder = furi_alloc(sizeof(IrdaEncoderRC6));
+    encoder->common_encoder = irda_common_encoder_alloc(&protocol_rc6);
+    encoder->toggle_bit = false;
+    return encoder;
+}
+
+void irda_encoder_rc6_free(void* encoder_ptr) {
+    furi_assert(encoder_ptr);
+
+    IrdaEncoderRC6* encoder = encoder_ptr;
+    free(encoder->common_encoder);
+    free(encoder);
+}
+
+IrdaStatus irda_encoder_rc6_encode_manchester(IrdaCommonEncoder* common_encoder, uint32_t* duration, bool* polarity) {
+    IrdaStatus status = IrdaStatusError;
+
+    bool toggle_bit = (common_encoder->bits_encoded == 4);
+    status = irda_common_encode_manchester(common_encoder, duration, polarity);
+    if (toggle_bit)
+        *duration *= 2;
+    return status;
+}
+