PF1550_Io_EnvieH747.cpp

/*
  Copyright (c) 2019 Arduino.  All right reserved.

  This library 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 2.1 of the License, or (at your option) any later version.

  This library 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 library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

/******************************************************************************
   INCLUDE
 ******************************************************************************/

#include "PF1550_Io_EnvieH747.h"
#include "PF1550.h"
#include <Arduino.h>
#include <Wire.h>

/******************************************************************************
   CTOR/DTOR
 ******************************************************************************/

PF1550_Io_EnvieH747::PF1550_Io_EnvieH747(uint8_t const i2c_addr)
: _i2c_addr(i2c_addr)
{

}

/******************************************************************************
   PUBLIC MEMBER FUNCTIONS
 ******************************************************************************/

int PF1550_Io_EnvieH747::begin()
{
  Wire1.begin();
  Wire1.setClock(100000);
  return 1;
}

void PF1550_Io_EnvieH747::readRegister(Register const reg_addr, uint8_t *data)
{
  uint8_t i2c_data[2];

  i2c_data[0] = (uint8_t)reg_addr;

  writeRegister(PF1550_I2C_ADDR, i2c_data, 1, 1);

  uint8_t retVal = Wire1.requestFrom(PF1550_I2C_ADDR, 1, true);

  if (_debug) {
    _debug->print("requestFrom: ");
    _debug->println(retVal);
  }

  int i = 0;
  while (Wire1.available() && i < 1) {
    data[0] = Wire1.read();
    i++;
  }

  if (_debug) {
    _debug->println("Read:");
    for (i = 0; i < 1; i++) {
      _debug->println(data[i], HEX);
    }
  }
}

void PF1550_Io_EnvieH747::writeRegister(uint8_t slave_addr, uint8_t *data, uint8_t data_len, uint8_t restart)
{
  if (_debug) {
    _debug->print("Restart: ");
    _debug->println(restart);
    if (!restart) {
      _debug->print("PF1550_Io_EnvieH747::writeRegister at address=");
      _debug->print(data[0], HEX);
      _debug->print(" data=");
      _debug->println(data[1], HEX);
      _debug->print("i2c slave address: ");
      _debug->println(slave_addr);
    } else {
      _debug->print("PF1550_Io_EnvieH747::Read from register at address=");
      _debug->println(data[0], HEX);
    }
  }

  Wire1.beginTransmission(slave_addr);
  Wire1.write(data, data_len);
  uint8_t retVal = Wire1.endTransmission(restart == 0 ? true : false);

  if (_debug) {
    _debug->print("End transmission: ");
    _debug->println(retVal);
  }
  /*
  if (_debug) {
    _debug->println("Write:");
    for (int i = 0; i < data_len; i++) {
      _debug->println(data[i], HEX);
    }
  }
  */
}

void PF1550_Io_EnvieH747::setSTANDBY()
{
  /* TODO: Use STM32H7 HAL to set PJ0 */
}

void PF1550_Io_EnvieH747::clrSTANDBY()
{
  /* TODO: Use STM32H7 HAL to clr PJ0 */
}