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+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
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+// SPDX-License-Identifier: GPL-2.0-or-later
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+
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+#include <thread>
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+#include "common/logging/log.h"
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+#include "input_common/helpers/joycon_protocol/irs.h"
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+
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+namespace InputCommon::Joycon {
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+
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+IrsProtocol::IrsProtocol(std::shared_ptr<JoyconHandle> handle)
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+ : JoyconCommonProtocol(std::move(handle)) {}
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+
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+DriverResult IrsProtocol::EnableIrs() {
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+ LOG_INFO(Input, "Enable IRS");
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+ DriverResult result{DriverResult::Success};
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+ SetBlocking();
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+
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+ if (result == DriverResult::Success) {
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+ result = SetReportMode(ReportMode::NFC_IR_MODE_60HZ);
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+ }
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+ if (result == DriverResult::Success) {
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+ result = EnableMCU(true);
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+ }
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+ if (result == DriverResult::Success) {
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+ result = WaitSetMCUMode(ReportMode::NFC_IR_MODE_60HZ, MCUMode::Standby);
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+ }
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+ if (result == DriverResult::Success) {
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+ const MCUConfig config{
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+ .command = MCUCommand::ConfigureMCU,
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+ .sub_command = MCUSubCommand::SetMCUMode,
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+ .mode = MCUMode::IR,
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+ .crc = {},
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+ };
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+
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+ result = ConfigureMCU(config);
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+ }
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+ if (result == DriverResult::Success) {
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+ result = WaitSetMCUMode(ReportMode::NFC_IR_MODE_60HZ, MCUMode::IR);
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+ }
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+ if (result == DriverResult::Success) {
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+ result = ConfigureIrs();
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+ }
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+ if (result == DriverResult::Success) {
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+ result = WriteRegistersStep1();
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+ }
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+ if (result == DriverResult::Success) {
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+ result = WriteRegistersStep2();
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+ }
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+
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+ is_enabled = true;
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+
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+ SetNonBlocking();
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+ return result;
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+}
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+
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+DriverResult IrsProtocol::DisableIrs() {
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+ LOG_DEBUG(Input, "Disable IRS");
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+ DriverResult result{DriverResult::Success};
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+ SetBlocking();
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+
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+ if (result == DriverResult::Success) {
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+ result = EnableMCU(false);
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+ }
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+
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+ is_enabled = false;
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+
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+ SetNonBlocking();
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+ return result;
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+}
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+
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+DriverResult IrsProtocol::SetIrsConfig(IrsMode mode, IrsResolution format) {
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+ irs_mode = mode;
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+ switch (format) {
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+ case IrsResolution::Size320x240:
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+ resolution_code = IrsResolutionCode::Size320x240;
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+ fragments = IrsFragments::Size320x240;
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+ resolution = IrsResolution::Size320x240;
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+ break;
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+ case IrsResolution::Size160x120:
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+ resolution_code = IrsResolutionCode::Size160x120;
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+ fragments = IrsFragments::Size160x120;
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+ resolution = IrsResolution::Size160x120;
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+ break;
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+ case IrsResolution::Size80x60:
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+ resolution_code = IrsResolutionCode::Size80x60;
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+ fragments = IrsFragments::Size80x60;
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+ resolution = IrsResolution::Size80x60;
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+ break;
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+ case IrsResolution::Size20x15:
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+ resolution_code = IrsResolutionCode::Size20x15;
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+ fragments = IrsFragments::Size20x15;
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+ resolution = IrsResolution::Size20x15;
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+ break;
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+ case IrsResolution::Size40x30:
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+ default:
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+ resolution_code = IrsResolutionCode::Size40x30;
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+ fragments = IrsFragments::Size40x30;
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+ resolution = IrsResolution::Size40x30;
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+ break;
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+ }
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+
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+ // Restart feature
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+ if (is_enabled) {
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+ DisableIrs();
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+ return EnableIrs();
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+ }
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+
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+ return DriverResult::Success;
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+}
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+
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+DriverResult IrsProtocol::RequestImage(std::span<u8> buffer) {
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+ const u8 next_packet_fragment =
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+ static_cast<u8>((packet_fragment + 1) % (static_cast<u8>(fragments) + 1));
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+
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+ if (buffer[0] == 0x31 && buffer[49] == 0x03) {
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+ u8 new_packet_fragment = buffer[52];
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+ if (new_packet_fragment == next_packet_fragment) {
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+ packet_fragment = next_packet_fragment;
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+ memcpy(buf_image.data() + (300 * packet_fragment), buffer.data() + 59, 300);
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+
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+ return RequestFrame(packet_fragment);
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+ }
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+
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+ if (new_packet_fragment == packet_fragment) {
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+ return RequestFrame(packet_fragment);
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+ }
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+
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+ return ResendFrame(next_packet_fragment);
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+ }
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+
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+ return RequestFrame(packet_fragment);
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+}
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+
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+DriverResult IrsProtocol::ConfigureIrs() {
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+ LOG_DEBUG(Input, "Configure IRS");
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+ constexpr std::size_t max_tries = 28;
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+ std::vector<u8> output;
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+ std::size_t tries = 0;
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+
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+ const IrsConfigure irs_configuration{
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+ .command = MCUCommand::ConfigureIR,
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+ .sub_command = MCUSubCommand::SetDeviceMode,
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+ .irs_mode = IrsMode::ImageTransfer,
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+ .number_of_fragments = fragments,
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+ .mcu_major_version = 0x0500,
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+ .mcu_minor_version = 0x1800,
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+ .crc = {},
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+ };
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+ buf_image.resize((static_cast<u8>(fragments) + 1) * 300);
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+
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+ std::vector<u8> request_data(sizeof(IrsConfigure));
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+ memcpy(request_data.data(), &irs_configuration, sizeof(IrsConfigure));
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+ request_data[37] = CalculateMCU_CRC8(request_data.data() + 1, 36);
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+ do {
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+ const auto result = SendSubCommand(SubCommand::SET_MCU_CONFIG, request_data, output);
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+
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+ if (result != DriverResult::Success) {
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+ return result;
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+ }
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+ if (tries++ >= max_tries) {
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+ return DriverResult::WrongReply;
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+ }
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+ } while (output[15] != 0x0b);
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+
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+ return DriverResult::Success;
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+}
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+
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+DriverResult IrsProtocol::WriteRegistersStep1() {
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+ LOG_DEBUG(Input, "WriteRegistersStep1");
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+ DriverResult result{DriverResult::Success};
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+ constexpr std::size_t max_tries = 28;
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+ std::vector<u8> output;
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+ std::size_t tries = 0;
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+
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+ const IrsWriteRegisters irs_registers{
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+ .command = MCUCommand::ConfigureIR,
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+ .sub_command = MCUSubCommand::WriteDeviceRegisters,
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+ .number_of_registers = 0x9,
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+ .registers =
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+ {
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+ IrsRegister{IrRegistersAddress::Resolution, static_cast<u8>(resolution_code)},
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+ {IrRegistersAddress::ExposureLSB, static_cast<u8>(exposure & 0xff)},
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+ {IrRegistersAddress::ExposureMSB, static_cast<u8>(exposure >> 8)},
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+ {IrRegistersAddress::ExposureTime, 0x00},
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+ {IrRegistersAddress::Leds, static_cast<u8>(leds)},
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+ {IrRegistersAddress::DigitalGainLSB, static_cast<u8>((digital_gain & 0x0f) << 4)},
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+ {IrRegistersAddress::DigitalGainMSB, static_cast<u8>((digital_gain & 0xf0) >> 4)},
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+ {IrRegistersAddress::LedFilter, static_cast<u8>(led_filter)},
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+ {IrRegistersAddress::WhitePixelThreshold, 0xc8},
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+ },
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+ .crc = {},
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+ };
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+
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+ std::vector<u8> request_data(sizeof(IrsWriteRegisters));
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+ memcpy(request_data.data(), &irs_registers, sizeof(IrsWriteRegisters));
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+ request_data[37] = CalculateMCU_CRC8(request_data.data() + 1, 36);
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+
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+ std::array<u8, 38> mcu_request{0x02};
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+ mcu_request[36] = CalculateMCU_CRC8(mcu_request.data(), 36);
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+ mcu_request[37] = 0xFF;
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+
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+ if (result != DriverResult::Success) {
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+ return result;
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+ }
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+
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+ do {
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+ result = SendSubCommand(SubCommand::SET_MCU_CONFIG, request_data, output);
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+
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+ // First time we need to set the report mode
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+ if (result == DriverResult::Success && tries == 0) {
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+ result = SendMcuCommand(SubCommand::SET_REPORT_MODE, mcu_request);
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+ }
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+ if (result == DriverResult::Success && tries == 0) {
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+ GetSubCommandResponse(SubCommand::SET_MCU_CONFIG, output);
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+ }
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+
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+ if (result != DriverResult::Success) {
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+ return result;
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+ }
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+ if (tries++ >= max_tries) {
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+ return DriverResult::WrongReply;
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+ }
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+ } while (!(output[15] == 0x13 && output[17] == 0x07) && output[15] != 0x23);
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+
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+ return DriverResult::Success;
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+}
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+
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+DriverResult IrsProtocol::WriteRegistersStep2() {
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+ LOG_DEBUG(Input, "WriteRegistersStep2");
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+ constexpr std::size_t max_tries = 28;
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+ std::vector<u8> output;
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+ std::size_t tries = 0;
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+
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+ const IrsWriteRegisters irs_registers{
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+ .command = MCUCommand::ConfigureIR,
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+ .sub_command = MCUSubCommand::WriteDeviceRegisters,
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+ .number_of_registers = 0x8,
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+ .registers =
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+ {
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+ IrsRegister{IrRegistersAddress::LedIntensitiyMSB,
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+ static_cast<u8>(led_intensity >> 8)},
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+ {IrRegistersAddress::LedIntensitiyLSB, static_cast<u8>(led_intensity & 0xff)},
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+ {IrRegistersAddress::ImageFlip, static_cast<u8>(image_flip)},
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+ {IrRegistersAddress::DenoiseSmoothing, static_cast<u8>((denoise >> 16) & 0xff)},
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+ {IrRegistersAddress::DenoiseEdge, static_cast<u8>((denoise >> 8) & 0xff)},
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+ {IrRegistersAddress::DenoiseColor, static_cast<u8>(denoise & 0xff)},
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+ {IrRegistersAddress::UpdateTime, 0x2d},
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+ {IrRegistersAddress::FinalizeConfig, 0x01},
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+ },
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+ .crc = {},
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+ };
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+
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+ std::vector<u8> request_data(sizeof(IrsWriteRegisters));
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+ memcpy(request_data.data(), &irs_registers, sizeof(IrsWriteRegisters));
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+ request_data[37] = CalculateMCU_CRC8(request_data.data() + 1, 36);
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+ do {
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+ const auto result = SendSubCommand(SubCommand::SET_MCU_CONFIG, request_data, output);
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+
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+ if (result != DriverResult::Success) {
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+ return result;
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+ }
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+ if (tries++ >= max_tries) {
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+ return DriverResult::WrongReply;
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+ }
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+ } while (output[15] != 0x13 && output[15] != 0x23);
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+
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+ return DriverResult::Success;
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+}
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+
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+DriverResult IrsProtocol::RequestFrame(u8 frame) {
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+ std::array<u8, 38> mcu_request{};
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+ mcu_request[3] = frame;
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+ mcu_request[36] = CalculateMCU_CRC8(mcu_request.data(), 36);
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+ mcu_request[37] = 0xFF;
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+ return SendMcuCommand(SubCommand::SET_REPORT_MODE, mcu_request);
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+}
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+
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+DriverResult IrsProtocol::ResendFrame(u8 frame) {
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+ std::array<u8, 38> mcu_request{};
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+ mcu_request[1] = 0x1;
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+ mcu_request[2] = frame;
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+ mcu_request[3] = 0x0;
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+ mcu_request[36] = CalculateMCU_CRC8(mcu_request.data(), 36);
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+ mcu_request[37] = 0xFF;
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+ return SendMcuCommand(SubCommand::SET_REPORT_MODE, mcu_request);
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+}
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+
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+std::vector<u8> IrsProtocol::GetImage() const {
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+ return buf_image;
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+}
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+
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+IrsResolution IrsProtocol::GetIrsFormat() const {
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+ return resolution;
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+}
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+
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+bool IrsProtocol::IsEnabled() const {
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+ return is_enabled;
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+}
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+
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+} // namespace InputCommon::Joycon
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Narr the Reg