upm/src/lcd/jhd1313m1.cxx

/*
 * 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 "jhd1313m1.h"

using namespace upm;

Jhd1313m1::Jhd1313m1 (int bus, int lcdAddress, int rgbAddress) : I2CLcd(bus, lcdAddress) {
    mraa_result_t error = MRAA_SUCCESS;

    m_rgb_address = rgbAddress;
    m_i2c_lcd_rgb = mraa_i2c_init(m_bus);

    mraa_result_t ret = mraa_i2c_address(m_i2c_lcd_rgb, m_rgb_address);
    if (ret != MRAA_SUCCESS) {
        fprintf(stderr, "Messed up i2c bus\n");
    }

    usleep(50000);
    i2Cmd (m_i2c_lcd_control, LCD_FUNCTIONSET | LCD_2LINE);
    usleep(4500);
    i2Cmd (m_i2c_lcd_control, LCD_FUNCTIONSET | LCD_2LINE);
    usleep(4500);
    i2Cmd (m_i2c_lcd_control, LCD_FUNCTIONSET | LCD_2LINE);
    usleep(4500);
    i2Cmd (m_i2c_lcd_control, LCD_FUNCTIONSET | LCD_2LINE);

    i2Cmd (m_i2c_lcd_control, LCD_DISPLAYCONTROL | LCD_DISPLAYON);
    clear ();
    usleep(4500);
    
    i2Cmd (m_i2c_lcd_control, LCD_ENTRYMODESET |
                              LCD_ENTRYLEFT |
                              LCD_ENTRYSHIFTDECREMENT);

    i2cReg (m_i2c_lcd_rgb, m_rgb_address, 0, 0);
    i2cReg (m_i2c_lcd_rgb, m_rgb_address, 1, 0);
    i2cReg (m_i2c_lcd_rgb, m_rgb_address, 0x08, 0xAA);

    i2cReg (m_i2c_lcd_rgb, m_rgb_address, 0x04, 255);
    i2cReg (m_i2c_lcd_rgb, m_rgb_address, 0x03, 255);
    i2cReg (m_i2c_lcd_rgb, m_rgb_address, 0x02, 255);
}

Jhd1313m1::~Jhd1313m1() {
    
}

mraa_result_t
Jhd1313m1::setColor(uint8_t r, uint8_t g, uint8_t b)
{
    i2cReg (m_i2c_lcd_rgb, m_rgb_address, 0, 0);
    i2cReg (m_i2c_lcd_rgb, m_rgb_address, 1, 0);
    i2cReg (m_i2c_lcd_rgb, m_rgb_address, 0x08, 0xAA);

    i2cReg (m_i2c_lcd_rgb, m_rgb_address, 0x04, r);
    i2cReg (m_i2c_lcd_rgb, m_rgb_address, 0x03, g);
    i2cReg (m_i2c_lcd_rgb, m_rgb_address, 0x02, b);

    return MRAA_SUCCESS;
}

mraa_result_t
Jhd1313m1::scroll(bool direction)
{
    if (direction)
        return i2Cmd (m_i2c_lcd_control, (LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT));
    return i2Cmd (m_i2c_lcd_control, (LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVERIGHT));
}

/*
 * **************
 *  virtual area
 * **************
 */
mraa_result_t
Jhd1313m1::write (std::string msg) {
    mraa_result_t error = MRAA_SUCCESS;
    uint8_t data[2] = {0x40, 0};
    for (std::string::size_type i = 0; i < msg.size(); ++i) {
        error = i2cData (m_i2c_lcd_control, msg[i]);
    }

    return error;
}

mraa_result_t
Jhd1313m1::setCursor (int row, int column) {
    mraa_result_t error = MRAA_SUCCESS;
    int row_addr[] = { 0x80, 0xc0, 0x14, 0x54};
    uint8_t offset = ((column % 16) + row_addr[row]);
    error =  i2Cmd (m_i2c_lcd_control, offset);

    return error;
}

mraa_result_t
Jhd1313m1::clear () {
    return i2Cmd (m_i2c_lcd_control, LCD_CLEARDISPLAY);
}

mraa_result_t
Jhd1313m1::home () {
    return i2Cmd (m_i2c_lcd_control, LCD_RETURNHOME);
}