mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-12-14 18:24:34 -05:00
033c4e9a5b
* Updated style * Updated files * fixed new line * Updated spacing * File fix WIP * Updated to clang 13 * updated comment style * Removed old comment code
76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
/*
|
|
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
|
|
*
|
|
* This file is part of PortaPack.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, Inc., 51 Franklin Street,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef __SPI_ARBITER_H__
|
|
#define __SPI_ARBITER_H__
|
|
|
|
#include <cstddef>
|
|
|
|
#include "spi_pp.hpp"
|
|
|
|
namespace spi {
|
|
namespace arbiter {
|
|
|
|
class Arbiter {
|
|
public:
|
|
constexpr Arbiter(
|
|
SPI& bus)
|
|
: _bus(bus),
|
|
_config(nullptr) {
|
|
}
|
|
|
|
void transfer(const SPIConfig* const config, void* const data, const size_t count) {
|
|
if (config != _config) {
|
|
_bus.stop();
|
|
_bus.start(*config);
|
|
_config = config;
|
|
}
|
|
_bus.transfer(data, count);
|
|
}
|
|
|
|
private:
|
|
SPI& _bus;
|
|
const SPIConfig* _config;
|
|
};
|
|
|
|
class Target {
|
|
public:
|
|
constexpr Target(
|
|
Arbiter& arbiter,
|
|
const SPIConfig& config)
|
|
: _arbiter(arbiter),
|
|
_config(config) {
|
|
}
|
|
|
|
void transfer(void* const data, const size_t count) {
|
|
_arbiter.transfer(&_config, data, count);
|
|
}
|
|
|
|
private:
|
|
Arbiter& _arbiter;
|
|
const SPIConfig _config;
|
|
};
|
|
|
|
} // namespace arbiter
|
|
} // namespace spi
|
|
|
|
#endif /*__SPI_ARBITER_H__*/
|