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65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
#include "samsung_protocol.h"
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#include "esphome/core/log.h"
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#include <cinttypes>
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namespace esphome {
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namespace remote_base {
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static const char *const TAG = "remote.samsung";
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static const uint32_t HEADER_HIGH_US = 4500;
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static const uint32_t HEADER_LOW_US = 4500;
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static const uint32_t BIT_HIGH_US = 560;
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static const uint32_t BIT_ONE_LOW_US = 1690;
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static const uint32_t BIT_ZERO_LOW_US = 560;
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static const uint32_t FOOTER_HIGH_US = 560;
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static const uint32_t FOOTER_LOW_US = 560;
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void SamsungProtocol::encode(RemoteTransmitData *dst, const SamsungData &data) {
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dst->set_carrier_frequency(38000);
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dst->reserve(4 + data.nbits * 2u);
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dst->item(HEADER_HIGH_US, HEADER_LOW_US);
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for (uint8_t bit = data.nbits; bit > 0; bit--) {
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if ((data.data >> (bit - 1)) & 1) {
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dst->item(BIT_HIGH_US, BIT_ONE_LOW_US);
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} else {
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dst->item(BIT_HIGH_US, BIT_ZERO_LOW_US);
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}
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}
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dst->item(FOOTER_HIGH_US, FOOTER_LOW_US);
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}
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optional<SamsungData> SamsungProtocol::decode(RemoteReceiveData src) {
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SamsungData out{
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.data = 0,
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.nbits = 0,
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};
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if (!src.expect_item(HEADER_HIGH_US, HEADER_LOW_US))
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return {};
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for (out.nbits = 0; out.nbits < 64; out.nbits++) {
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if (src.expect_item(BIT_HIGH_US, BIT_ONE_LOW_US)) {
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out.data = (out.data << 1) | 1;
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} else if (src.expect_item(BIT_HIGH_US, BIT_ZERO_LOW_US)) {
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out.data = (out.data << 1) | 0;
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} else if (out.nbits >= 31) {
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if (!src.expect_mark(FOOTER_HIGH_US))
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return {};
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return out;
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} else {
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return {};
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}
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}
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if (!src.expect_mark(FOOTER_HIGH_US))
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return {};
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return out;
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}
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void SamsungProtocol::dump(const SamsungData &data) {
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ESP_LOGD(TAG, "Received Samsung: data=0x%" PRIX64 ", nbits=%d", data.data, data.nbits);
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}
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} // namespace remote_base
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} // namespace esphome
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