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40c474cd83
Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com> Co-authored-by: Otto winter <otto@otto-winter.com>
91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
#include "rc5_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.rc5";
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static const uint32_t BIT_TIME_US = 889;
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static const uint8_t NBITS = 14;
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void RC5Protocol::encode(RemoteTransmitData *dst, const RC5Data &data) {
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static bool toggle = false;
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dst->set_carrier_frequency(36000);
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uint64_t out_data = 0;
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uint8_t command = data.command;
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if (data.command >= 64) {
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out_data |= 0b10 << 12;
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command = command - 64;
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} else {
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out_data |= 0b11 << 12;
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}
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out_data |= toggle << 11;
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out_data |= data.address << 6;
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out_data |= command;
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for (uint64_t mask = 1UL << (NBITS - 1); mask != 0; mask >>= 1) {
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if (out_data & mask) {
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dst->space(BIT_TIME_US);
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dst->mark(BIT_TIME_US);
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} else {
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dst->mark(BIT_TIME_US);
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dst->space(BIT_TIME_US);
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}
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}
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toggle = !toggle;
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}
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optional<RC5Data> RC5Protocol::decode(RemoteReceiveData src) {
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RC5Data out{
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.address = 0,
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.command = 0,
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};
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uint8_t field_bit;
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if (src.expect_space(BIT_TIME_US) && src.expect_mark(BIT_TIME_US)) {
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field_bit = 1;
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} else if (src.expect_space(2 * BIT_TIME_US)) {
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field_bit = 0;
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} else {
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return {};
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}
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if (!(((src.expect_space(BIT_TIME_US) || src.peek_space(2 * BIT_TIME_US)) ||
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(src.expect_mark(BIT_TIME_US) || src.peek_mark(2 * BIT_TIME_US))) &&
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(((src.expect_mark(BIT_TIME_US) || src.expect_mark(2 * BIT_TIME_US)) &&
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(src.expect_space(BIT_TIME_US) || src.peek_space(2 * BIT_TIME_US))) ||
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((src.expect_space(BIT_TIME_US) || src.expect_space(2 * BIT_TIME_US)) &&
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(src.expect_mark(BIT_TIME_US) || src.peek_mark(2 * BIT_TIME_US)))))) {
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return {};
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}
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uint32_t out_data = 0;
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for (int bit = NBITS - 4; bit >= 1; bit--) {
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if ((src.expect_space(BIT_TIME_US) || src.expect_space(2 * BIT_TIME_US)) &&
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(src.expect_mark(BIT_TIME_US) || src.peek_mark(2 * BIT_TIME_US))) {
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out_data |= 0 << bit;
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} else if ((src.expect_mark(BIT_TIME_US) || src.expect_mark(2 * BIT_TIME_US)) &&
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(src.expect_space(BIT_TIME_US) || src.peek_space(2 * BIT_TIME_US))) {
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out_data |= 1 << bit;
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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_space(BIT_TIME_US) || src.expect_space(2 * BIT_TIME_US)) {
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out_data |= 0;
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} else if (src.expect_mark(BIT_TIME_US) || src.expect_mark(2 * BIT_TIME_US)) {
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out_data |= 1;
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}
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out.command = (uint8_t)(out_data & 0x3F) + (1 - field_bit) * 64u;
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out.address = (out_data >> 6) & 0x1F;
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return out;
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}
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void RC5Protocol::dump(const RC5Data &data) {
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ESP_LOGD(TAG, "Received RC5: address=0x%02X, command=0x%02X", 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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