mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-25 06:01:13 +00:00
77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "i2c_types.hpp"
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#include "i2c_command_list.hpp"
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namespace ams::i2c {
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namespace {
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/* Useful definitions. */
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constexpr size_t SendCommandSize = 2;
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constexpr size_t ReceiveCommandSize = 2;
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constexpr size_t SleepCommandSize = 2;
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}
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Result CommandListFormatter::CanEnqueue(size_t size) const {
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R_UNLESS(this->cmd_list_size - this->cur_index >= size, ResultFullCommandList());
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return ResultSuccess();
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}
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Result CommandListFormatter::EnqueueSendCommand(I2cTransactionOption option, const void *src, size_t size) {
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R_TRY(this->CanEnqueue(SendCommandSize + size));
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this->cmd_list[this->cur_index] = static_cast<u8>(Command::Send);
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this->cmd_list[this->cur_index] |= ((option & I2cTransactionOption_Start) != 0) << 6;
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this->cmd_list[this->cur_index] |= ((option & I2cTransactionOption_Stop) != 0) << 7;
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this->cur_index++;
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this->cmd_list[this->cur_index++] = size;
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const u8 *src_u8 = reinterpret_cast<const u8 *>(src);
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for (size_t i = 0; i < size; i++) {
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this->cmd_list[this->cur_index++] = src_u8[i];
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}
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return ResultSuccess();
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}
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Result CommandListFormatter::EnqueueReceiveCommand(I2cTransactionOption option, size_t size) {
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R_TRY(this->CanEnqueue(ReceiveCommandSize));
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this->cmd_list[this->cur_index] = static_cast<u8>(Command::Receive);
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this->cmd_list[this->cur_index] |= ((option & I2cTransactionOption_Start) != 0) << 6;
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this->cmd_list[this->cur_index] |= ((option & I2cTransactionOption_Stop) != 0) << 7;
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this->cur_index++;
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this->cmd_list[this->cur_index++] = size;
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return ResultSuccess();
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}
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Result CommandListFormatter::EnqueueSleepCommand(size_t us) {
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R_TRY(this->CanEnqueue(SleepCommandSize));
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this->cmd_list[this->cur_index] = static_cast<u8>(Command::SubCommand);
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this->cmd_list[this->cur_index] |= static_cast<u8>(SubCommand::Sleep) << 2;
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this->cur_index++;
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this->cmd_list[this->cur_index++] = us;
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return ResultSuccess();
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}
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}
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