upm/src/lcd/i2clcd.cxx

87 lines
2.5 KiB
C++
Raw Normal View History

/*
* 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 "i2clcd.h"
using namespace upm;
I2CLcd::I2CLcd (int bus, int lcdAddress) {
m_lcd_control_address = lcdAddress;
m_bus = bus;
m_i2c_lcd_control = maa_i2c_init(m_bus);
maa_result_t ret = maa_i2c_address(m_i2c_lcd_control, m_lcd_control_address);
if (ret != MAA_SUCCESS) {
fprintf(stderr, "Messed up i2c bus\n");
}
}
maa_result_t
I2CLcd::write (int row, int column, std::string msg) {
setCursor (row, column);
write (msg);
}
maa_result_t
I2CLcd::close() {
return maa_i2c_stop(m_i2c_lcd_control);
}
maa_result_t
I2CLcd::i2cReg (maa_i2c_context ctx, int deviceAdress, int addr, uint8_t value) {
maa_result_t error = MAA_SUCCESS;
uint8_t data[2] = { addr, value };
error = maa_i2c_address (ctx, deviceAdress);
error = maa_i2c_write (ctx, data, 2);
return error;
}
maa_result_t
I2CLcd::i2Cmd (maa_i2c_context ctx, uint8_t value) {
maa_result_t error = MAA_SUCCESS;
uint8_t data[2] = { LCD_CMD, value };
error = maa_i2c_address (ctx, m_lcd_control_address);
error = maa_i2c_write (ctx, data, 2);
return error;
}
maa_result_t
I2CLcd::i2cData (maa_i2c_context ctx, uint8_t value) {
maa_result_t error = MAA_SUCCESS;
uint8_t data[2] = { LCD_DATA, value };
error = maa_i2c_address (ctx, m_lcd_control_address);
error = maa_i2c_write (ctx, data, 2);
return error;
}