portapack-mayhem/firmware/application/hw/spi_arbiter.hpp
furrtek 3193c6ee99 Added bias-T status icon
Merged radio settings in one screen
2018-01-07 23:13:08 +00:00

78 lines
1.6 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;
};
} /* arbiter */
} /* spi */
#endif/*__SPI_ARBITER_H__*/