84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
/*! \file pispi.h
|
|
* \brief SPI device
|
|
*/
|
|
/*
|
|
PIP - Platform Independent Primitives
|
|
SPI
|
|
Andrey Bychkov work.a.b@yandex.ru
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, 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 Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef PISPI_H
|
|
#define PISPI_H
|
|
|
|
#include "piiodevice.h"
|
|
|
|
|
|
class PIP_EXPORT PISPI: public PIIODevice
|
|
{
|
|
PIIODEVICE(PISPI)
|
|
public:
|
|
explicit PISPI(const PIString & path = PIString(), uint speed_hz = 1000000, PIIODevice::DeviceMode mode = PIIODevice::ReadWrite);
|
|
virtual ~PISPI();
|
|
|
|
//! \brief Parameters of PISPI
|
|
enum Parameters {
|
|
ClockInverse /*! SPI clk polarity control*/ = 0x1,
|
|
ClockPhaseShift /*! SPI clk phase control */ = 0x2,
|
|
};
|
|
|
|
void setSpeed(uint speed_hz);
|
|
uint speed() const {return spi_speed;}
|
|
|
|
void setBits(uchar bits = 8);
|
|
uchar bits() const {return spi_bits;}
|
|
|
|
//! Set parameters to "parameters_"
|
|
void setParameters(PIFlags<PISPI::Parameters> parameters_) {spi_mode = (int)parameters_;}
|
|
|
|
//! Set parameter "parameter" to "on" state
|
|
void setParameter(PISPI::Parameters parameter, bool on = true);
|
|
|
|
//! Returns if parameter "parameter" is set
|
|
bool isParameterSet(PISPI::Parameters parameter) const;
|
|
|
|
//! Returns parameters
|
|
PIFlags<PISPI::Parameters> parameters() const {return spi_mode;}
|
|
|
|
|
|
protected:
|
|
bool openDevice();
|
|
bool closeDevice();
|
|
int readDevice(void * read_to, int max_size);
|
|
int writeDevice(const void * data, int max_size);
|
|
|
|
PIString fullPathPrefix() const {return PIStringAscii("spi");}
|
|
PIString constructFullPathDevice() const;
|
|
void configureFromFullPathDevice(const PIString & full_path);
|
|
PIPropertyStorage constructVariantDevice() const;
|
|
void configureFromVariantDevice(const PIPropertyStorage & d);
|
|
DeviceInfoFlags deviceInfoFlags() const {return PIIODevice::Sequential;}
|
|
|
|
private:
|
|
uint spi_speed;
|
|
uchar spi_mode;
|
|
uchar spi_bits;
|
|
PIByteArray tx_buf, rx_buf;
|
|
PIByteArray recv_buf;
|
|
PRIVATE_DECLARATION(PIP_EXPORT)
|
|
};
|
|
|
|
#endif // PISPI_H
|