mirror of https://github.com/esphome/esphome.git
104 lines
2.6 KiB
C++
104 lines
2.6 KiB
C++
#include "samsung36_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.samsung36";
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static const uint8_t NBITS = 78;
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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 = 500;
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static const uint32_t BIT_ONE_LOW_US = 1500;
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static const uint32_t BIT_ZERO_LOW_US = 500;
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static const uint32_t MIDDLE_HIGH_US = 500;
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static const uint32_t MIDDLE_LOW_US = 4500;
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static const uint32_t FOOTER_HIGH_US = 500;
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static const uint32_t FOOTER_LOW_US = 59000;
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void Samsung36Protocol::encode(RemoteTransmitData *dst, const Samsung36Data &data) {
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dst->set_carrier_frequency(38000);
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dst->reserve(NBITS);
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// send header
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dst->item(HEADER_HIGH_US, HEADER_LOW_US);
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// send first 16 bits
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for (uint32_t mask = 1UL << 15; mask != 0; mask >>= 1) {
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if (data.address & mask) {
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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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// send middle header
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dst->item(MIDDLE_HIGH_US, MIDDLE_LOW_US);
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// send last 20 bits
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for (uint32_t mask = 1UL << 19; mask != 0; mask >>= 1) {
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if (data.command & mask) {
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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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// footer
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dst->item(FOOTER_HIGH_US, FOOTER_LOW_US);
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}
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optional<Samsung36Data> Samsung36Protocol::decode(RemoteReceiveData src) {
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Samsung36Data out{
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.address = 0,
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.command = 0,
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};
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// check if header matches
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if (!src.expect_item(HEADER_HIGH_US, HEADER_LOW_US))
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return {};
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// check if we have enough bits
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if (src.size() != NBITS)
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return {};
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// get the first 16 bits
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for (uint8_t i = 0; i < 16; i++) {
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out.address <<= 1UL;
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if (src.expect_item(BIT_HIGH_US, BIT_ONE_LOW_US)) {
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out.address |= 1UL;
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} else if (src.expect_item(BIT_HIGH_US, BIT_ZERO_LOW_US)) {
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out.address |= 0UL;
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} else {
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return {};
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}
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}
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// check if the middle mark matches
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if (!src.expect_item(MIDDLE_HIGH_US, MIDDLE_LOW_US)) {
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return {};
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}
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// get the last 20 bits
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for (uint8_t i = 0; i < 20; i++) {
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out.command <<= 1UL;
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if (src.expect_item(BIT_HIGH_US, BIT_ONE_LOW_US)) {
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out.command |= 1UL;
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} else if (src.expect_item(BIT_HIGH_US, BIT_ZERO_LOW_US)) {
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out.command |= 0UL;
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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 Samsung36Protocol::dump(const Samsung36Data &data) {
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ESP_LOGI(TAG, "Received Samsung36: address=0x%04X, command=0x%08X", data.address, data.command);
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}
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} // namespace remote_base
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} // namespace esphome
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