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69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
#include "sony_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.sony";
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static const uint32_t HEADER_HIGH_US = 2400;
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static const uint32_t HEADER_LOW_US = 600;
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static const uint32_t BIT_ONE_HIGH_US = 1200;
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static const uint32_t BIT_ZERO_HIGH_US = 600;
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static const uint32_t BIT_LOW_US = 600;
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void SonyProtocol::encode(RemoteTransmitData *dst, const SonyData &data) {
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dst->set_carrier_frequency(40000);
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dst->reserve(2 + data.nbits * 2u);
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dst->item(HEADER_HIGH_US, HEADER_LOW_US);
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for (uint32_t mask = 1UL << (data.nbits - 1); mask != 0; mask >>= 1) {
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if (data.data & mask) {
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dst->item(BIT_ONE_HIGH_US, BIT_LOW_US);
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} else {
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dst->item(BIT_ZERO_HIGH_US, BIT_LOW_US);
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}
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}
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}
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optional<SonyData> SonyProtocol::decode(RemoteReceiveData src) {
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SonyData 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 < 20; out.nbits++) {
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uint32_t bit;
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if (src.expect_mark(BIT_ONE_HIGH_US)) {
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bit = 1;
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} else if (src.expect_mark(BIT_ZERO_HIGH_US)) {
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bit = 0;
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} else if (out.nbits == 12 || out.nbits == 15) {
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return out;
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} else {
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return {};
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}
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out.data = (out.data << 1UL) | bit;
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if (src.expect_space(BIT_LOW_US)) {
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// nothing needs to be done
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} else if (src.peek_space_at_least(BIT_LOW_US)) {
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out.nbits += 1;
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if (out.nbits == 12 || out.nbits == 15 || out.nbits == 20)
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return out;
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return {};
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} else {
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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 SonyProtocol::dump(const SonyData &data) {
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ESP_LOGD(TAG, "Received Sony: data=0x%08X, 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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