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https://github.com/esphome/esphome.git
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85 lines
2.2 KiB
C++
85 lines
2.2 KiB
C++
#include "haier_protocol.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace remote_base {
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static const char *const TAG = "remote.haier";
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constexpr uint32_t HEADER_LOW_US = 3100;
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constexpr uint32_t HEADER_HIGH_US = 4400;
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constexpr uint32_t BIT_MARK_US = 540;
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constexpr uint32_t BIT_ONE_SPACE_US = 1650;
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constexpr uint32_t BIT_ZERO_SPACE_US = 580;
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constexpr unsigned int HAIER_IR_PACKET_BIT_SIZE = 112;
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void HaierProtocol::encode_byte_(RemoteTransmitData *dst, uint8_t item) {
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for (uint8_t mask = 1 << 7; mask != 0; mask >>= 1) {
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if (item & mask) {
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dst->space(BIT_ONE_SPACE_US);
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} else {
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dst->space(BIT_ZERO_SPACE_US);
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}
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dst->mark(BIT_MARK_US);
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}
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}
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void HaierProtocol::encode(RemoteTransmitData *dst, const HaierData &data) {
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dst->set_carrier_frequency(38000);
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dst->reserve(5 + ((data.data.size() + 1) * 2));
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dst->mark(HEADER_LOW_US);
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dst->space(HEADER_LOW_US);
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dst->mark(HEADER_LOW_US);
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dst->space(HEADER_HIGH_US);
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dst->mark(BIT_MARK_US);
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uint8_t checksum = 0;
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for (uint8_t item : data.data) {
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this->encode_byte_(dst, item);
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checksum += item;
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}
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this->encode_byte_(dst, checksum);
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}
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optional<HaierData> HaierProtocol::decode(RemoteReceiveData src) {
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if (!src.expect_item(HEADER_LOW_US, HEADER_LOW_US) || !src.expect_item(HEADER_LOW_US, HEADER_HIGH_US)) {
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return {};
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}
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if (!src.expect_mark(BIT_MARK_US)) {
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return {};
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}
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size_t size = src.size() - src.get_index() - 1;
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if (size < HAIER_IR_PACKET_BIT_SIZE * 2)
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return {};
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size = HAIER_IR_PACKET_BIT_SIZE * 2;
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uint8_t checksum = 0;
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HaierData out;
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while (size > 0) {
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uint8_t data = 0;
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for (uint8_t mask = 0x80; mask != 0; mask >>= 1) {
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if (src.expect_space(BIT_ONE_SPACE_US)) {
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data |= mask;
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} else if (!src.expect_space(BIT_ZERO_SPACE_US)) {
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return {};
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}
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if (!src.expect_mark(BIT_MARK_US)) {
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return {};
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}
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size -= 2;
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}
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if (size > 0) {
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checksum += data;
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out.data.push_back(data);
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} else if (checksum != data) {
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return {};
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}
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}
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return out;
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}
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void HaierProtocol::dump(const HaierData &data) {
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ESP_LOGI(TAG, "Received Haier: %s", format_hex_pretty(data.data).c_str());
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}
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} // namespace remote_base
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} // namespace esphome
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