Mirage remote receiver & transmitter (#6479)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
2026-05-25 15:18:29 +02:00 · 2024-05-16 03:35:17 +04:00
parent ebfccc64c7
commit 08509f7755
6 changed files with 174 additions and 0 deletions
@@ -0,0 +1,84 @@
+#include "mirage_protocol.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace remote_base {
+
+static const char *const TAG = "remote.mirage";
+
+constexpr uint32_t HEADER_MARK_US = 8360;
+constexpr uint32_t HEADER_SPACE_US = 4248;
+constexpr uint32_t BIT_MARK_US = 554;
+constexpr uint32_t BIT_ONE_SPACE_US = 1592;
+constexpr uint32_t BIT_ZERO_SPACE_US = 545;
+
+constexpr unsigned int MIRAGE_IR_PACKET_BIT_SIZE = 120;
+
+void MirageProtocol::encode(RemoteTransmitData *dst, const MirageData &data) {
+  ESP_LOGI(TAG, "Transive Mirage: %s", format_hex_pretty(data.data).c_str());
+  dst->set_carrier_frequency(38000);
+  dst->reserve(5 + ((data.data.size() + 1) * 2));
+  dst->mark(HEADER_MARK_US);
+  dst->space(HEADER_SPACE_US);
+  dst->mark(BIT_MARK_US);
+  uint8_t checksum = 0;
+  for (uint8_t item : data.data) {
+    this->encode_byte_(dst, item);
+    checksum += (item >> 4) + (item & 0xF);
+  }
+  this->encode_byte_(dst, checksum);
+}
+
+void MirageProtocol::encode_byte_(RemoteTransmitData *dst, uint8_t item) {
+  for (uint8_t b = 0; b < 8; b++) {
+    if (item & (1UL << b)) {
+      dst->space(BIT_ONE_SPACE_US);
+    } else {
+      dst->space(BIT_ZERO_SPACE_US);
+    }
+    dst->mark(BIT_MARK_US);
+  }
+}
+
+optional<MirageData> MirageProtocol::decode(RemoteReceiveData src) {
+  if (!src.expect_item(HEADER_MARK_US, HEADER_SPACE_US)) {
+    return {};
+  }
+  if (!src.expect_mark(BIT_MARK_US)) {
+    return {};
+  }
+  size_t size = src.size() - src.get_index() - 1;
+  if (size < MIRAGE_IR_PACKET_BIT_SIZE * 2)
+    return {};
+  size = MIRAGE_IR_PACKET_BIT_SIZE * 2;
+  uint8_t checksum = 0;
+  MirageData out;
+  while (size > 0) {
+    uint8_t data = 0;
+    for (uint8_t b = 0; b < 8; b++) {
+      if (src.expect_space(BIT_ONE_SPACE_US)) {
+        data |= (1UL << b);
+      } else if (!src.expect_space(BIT_ZERO_SPACE_US)) {
+        return {};
+      }
+      if (!src.expect_mark(BIT_MARK_US)) {
+        return {};
+      }
+      size -= 2;
+    }
+    if (size > 0) {
+      checksum += (data >> 4) + (data & 0xF);
+      out.data.push_back(data);
+    } else if (checksum != data) {
+      return {};
+    }
+  }
+  return out;
+}
+
+void MirageProtocol::dump(const MirageData &data) {
+  ESP_LOGI(TAG, "Received Mirage: %s", format_hex_pretty(data.data).c_str());
+}
+
+}  // namespace remote_base
+}  // namespace esphome