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/*
* Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
* Copyright (c) 2014 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <iostream>
#include <unistd.h>
#include <stdlib.h>
#include <stdexcept>
#include "max5487.hpp"
using namespace upm;
MAX5487::MAX5487 (int csn) : m_csnPinCtx(csn), m_spi(0) {
mraa::Result error = mraa::SUCCESS;
m_name = "MAX5487";
if (csn == -1) {
throw std::invalid_argument(std::string(__FUNCTION__));
}
error = m_csnPinCtx.dir (mraa::DIR_OUT);
if (error != mraa::SUCCESS) {
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_gpio_dir() failed");
}
CSOff ();
}
void
MAX5487::setWiperA (uint8_t wiper) {
uint8_t data[2] = { 0x00, 0x00};
CSOn ();
data[0] = R_WR_WIPER_A;
data[1] = wiper;
uint8_t* retData = m_spi.write(data, 2);
CSOff ();
}
void
MAX5487::setWiperB (uint8_t wiper) {
uint8_t data[2] = { 0x00, 0x00};
CSOn ();
data[0] = R_WR_WIPER_B;
data[1] = wiper;
uint8_t* retData = m_spi.write(data, 2);
CSOff ();
}
/*
* **************
* private area
* **************
*/
mraa::Result
MAX5487::CSOn () {
return m_csnPinCtx.write(LOW);
}
mraa::Result
MAX5487::CSOff () {
return m_csnPinCtx.write(HIGH);
}
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