RFID: add support for Kantech IOProx cards (#1261)

applications/lfrfid/helpers/encoder_ioprox.cpp

@@ -0,0 +1,32 @@
+#include "encoder_ioprox.h"
+#include "protocols/protocol_ioprox.h"
+#include <furi.h>
+
+void EncoderIoProx::init(const uint8_t* data, const uint8_t data_size) {
+    ProtocolIoProx ioprox;
+    ioprox.encode(data, data_size, card_data, sizeof(card_data));
+    card_data_index = 0;
+}
+
+void EncoderIoProx::get_next(bool* polarity, uint16_t* period, uint16_t* pulse) {
+    uint8_t bit = (card_data[card_data_index / 8] >> (7 - (card_data_index % 8))) & 1;
+
+    bool advance = fsk->next(bit, period);
+    if(advance) {
+        card_data_index++;
+        if(card_data_index >= (8 * card_data_max)) {
+            card_data_index = 0;
+        }
+    }
+
+    *polarity = true;
+    *pulse = *period / 2;
+}
+
+EncoderIoProx::EncoderIoProx() {
+    fsk = new OscFSK(8, 10, 64);
+}
+
+EncoderIoProx::~EncoderIoProx() {
+    delete fsk;
+}