File content as of revision 1:220a2496380e:

/*!
 * \name        TLE5012B_SPI.h - Mbed port of Arduino library for the TLE5012B angle sensor.
 * \author      Infineon Technologies AG (Dr.Olaf Filies)
 * \copyright   2019 Infineon Technologies AG
 * \version     2.0.1
 * \brief       GMR-based angle sensor for angular position sensing in automotive applications
 * \details     Ported to Mbed by Zoltan Hudak 2020-08
 *
 * The TLE5012B is a 360° angle sensor that detects the orientation of a magnetic field.
 * This is achieved by measuring sine and cosine angle components with monolithic integrated
 * Giant Magneto Resistance (iGMR) elements. These raw signals (sine and cosine) are digitally
 * processed internally to calculate the angle orientation of the magnetic field (magnet).
 * The TLE5012B is a pre-calibrated sensor. The calibration parameters are stored in laser fuses.
 * At start-up the values of the fuses are written into flip-flops, where these values can be changed
 * by the application-specific parameters. Further precision of the angle measurement over a wide
 * temperature range and a long lifetime can be improved by enabling an optional internal autocalibration
 * algorithm. Data communications are accomplished with a bi-directional Synchronous Serial Communication (SSC)
 * that is SPI-compatible. The sensor configuration is stored in registers, which are accessible by the
 * SSC interface. Additionally four other interfaces are available with the TLE5012B: Pulse-Width-Modulation (PWM)
 * Protocol, Short-PWM-Code (SPC) Protocol, Hall Switch Mode (HSM) and Incremental Interface (IIF). These interfaces
 * can be used in parallel with SSC or alone. Pre-configured sensor derivates with different interface settings are available.
 * Online diagnostic functions are provided to ensure reliable operation.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
 * following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this list of conditions and the following
 * disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
 * disclaimer in the documentation and/or other materials provided with the distribution.
 *
 * Neither the name of the copyright holders nor the names of its contributors may be used to endorse or promote
 * products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE  FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY,OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
#ifndef TLE5021B_SPI_H
#define TLE5021B_SPI_H

#include "mbed.h"

class TLE5012B_SPI
{
    DigitalInOut    _mosi;
    DigitalOut      _sck;
    SPI             _spi;

    inline void writeBit(int value);
    inline int  readBit();
    void        write(uint16_t word);
    uint16_t    read();

public:

    TLE5012B_SPI(PinName mosi, PinName miso, PinName sck);

    void        begin(DigitalOut* cs);
    void        triggerUpdate();
    void        sendReceiveSpi(DigitalOut*, uint16_t* txData, uint16_t txLen, uint16_t* rxData, uint16_t rxLen);
};

#endif // TLE5021B_INT_H