dooya_protocol.cpp

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#include "dooya_protocol.h"
#include "esphome/core/log.h"
 
namespace esphome::remote_base {
 
static const char *const TAG = "remote.dooya";
 
static constexpr uint32_t HEADER_HIGH_US = 5000;
static constexpr uint32_t HEADER_LOW_US = 1500;
static constexpr uint32_t BIT_ZERO_HIGH_US = 350;
static constexpr uint32_t BIT_ZERO_LOW_US = 750;
static constexpr uint32_t BIT_ONE_HIGH_US = 750;
static constexpr uint32_t BIT_ONE_LOW_US = 350;
 
void DooyaProtocol::encode(RemoteTransmitData *dst, const DooyaData &data) {
  dst->set_carrier_frequency(0);
  dst->reserve(2 + 40 * 2u);
 
  dst->item(HEADER_HIGH_US, HEADER_LOW_US);
 
  for (uint32_t mask = 1UL << (23); mask != 0; mask >>= 1) {
    if (data.id & mask) {
      dst->item(BIT_ONE_HIGH_US, BIT_ONE_LOW_US);
    } else {
      dst->item(BIT_ZERO_HIGH_US, BIT_ZERO_LOW_US);
    }
  }
 
  for (uint32_t mask = 1UL << (7); mask != 0; mask >>= 1) {
    if (data.channel & mask) {
      dst->item(BIT_ONE_HIGH_US, BIT_ONE_LOW_US);
    } else {
      dst->item(BIT_ZERO_HIGH_US, BIT_ZERO_LOW_US);
    }
  }
 
  for (uint32_t mask = 1UL << (3); mask != 0; mask >>= 1) {
    if (data.button & mask) {
      dst->item(BIT_ONE_HIGH_US, BIT_ONE_LOW_US);
    } else {
      dst->item(BIT_ZERO_HIGH_US, BIT_ZERO_LOW_US);
    }
  }
 
  for (uint32_t mask = 1UL << (3); mask != 0; mask >>= 1) {
    if (data.check & mask) {
      dst->item(BIT_ONE_HIGH_US, BIT_ONE_LOW_US);
    } else {
      dst->item(BIT_ZERO_HIGH_US, BIT_ZERO_LOW_US);
    }
  }
}
optional<DooyaData> DooyaProtocol::decode(RemoteReceiveData src) {
  DooyaData out{
      .id = 0,
      .channel = 0,
      .button = 0,
      .check = 0,
  };
  if (!src.expect_item(HEADER_HIGH_US, HEADER_LOW_US))
    return {};
 
  for (uint8_t i = 0; i < 24; i++) {
    if (src.expect_item(BIT_ONE_HIGH_US, BIT_ONE_LOW_US)) {
      out.id = (out.id << 1) | 1;
    } else if (src.expect_item(BIT_ZERO_HIGH_US, BIT_ZERO_LOW_US)) {
      out.id = (out.id << 1) | 0;
    } else {
      return {};
    }
  }
 
  for (uint8_t i = 0; i < 8; i++) {
    if (src.expect_item(BIT_ONE_HIGH_US, BIT_ONE_LOW_US)) {
      out.channel = (out.channel << 1) | 1;
    } else if (src.expect_item(BIT_ZERO_HIGH_US, BIT_ZERO_LOW_US)) {
      out.channel = (out.channel << 1) | 0;
    } else {
      return {};
    }
  }
 
  for (uint8_t i = 0; i < 4; i++) {
    if (src.expect_item(BIT_ONE_HIGH_US, BIT_ONE_LOW_US)) {
      out.button = (out.button << 1) | 1;
    } else if (src.expect_item(BIT_ZERO_HIGH_US, BIT_ZERO_LOW_US)) {
      out.button = (out.button << 1) | 0;
    } else {
      return {};
    }
  }
 
  for (uint8_t i = 0; i < 3; i++) {
    if (src.expect_item(BIT_ONE_HIGH_US, BIT_ONE_LOW_US)) {
      out.check = (out.check << 1) | 1;
    } else if (src.expect_item(BIT_ZERO_HIGH_US, BIT_ZERO_LOW_US)) {
      out.check = (out.check << 1) | 0;
    } else {
      return {};
    }
  }
  // Last bit is not received properly but can be decoded
  if (src.expect_mark(BIT_ONE_HIGH_US)) {
    out.check = (out.check << 1) | 1;
  } else if (src.expect_mark(BIT_ZERO_HIGH_US)) {
    out.check = (out.check << 1) | 0;
  } else {
    return {};
  }
 
  return out;
}
void DooyaProtocol::dump(const DooyaData &data) {
  ESP_LOGI(TAG, "Received Dooya: id=0x%08" PRIX32 ", channel=%d, button=%d, check=%d", data.id, data.channel,
           data.button, data.check);
}
 
}  // namespace esphome::remote_base