upm/src/lcd/ssd1327.cxx

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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 <string>
#include <unistd.h>
#include "ssd1327.h"
using namespace upm;
#define INIT_SLEEP 50000
#define CMD_SLEEP 10000
SSD1327::SSD1327(int bus_in, int addr_in) : I2CLcd(bus_in, addr_in)
{
mraa_result_t error = MRAA_SUCCESS;
usleep(INIT_SLEEP);
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0xFD, LCD_CMD); // Unlock OLED driver IC MCU
// interface from entering command.
// i.e: Accept commands
usleep(INIT_SLEEP);
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x12, LCD_CMD);
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0xAE, LCD_CMD); // Set display off
usleep(INIT_SLEEP);
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0xA8, LCD_CMD); // set multiplex ratio
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x5F, LCD_CMD); // 96
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0xA1, LCD_CMD); // set display start line
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x00, LCD_CMD); //
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0xA2, LCD_CMD); // set display offset
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x60, LCD_CMD);
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0xA0, LCD_CMD); // set remap
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x46, LCD_CMD);
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0xAB, LCD_CMD); // set vdd internal
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x01, LCD_CMD); //
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x81, LCD_CMD); // set contrasr
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x53, LCD_CMD); // 100 nit
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0xB1, LCD_CMD); // Set Phase Length
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0X51, LCD_CMD); //
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control,
0xB3,
LCD_CMD); // Set Display Clock Divide Ratio/Oscillator
// Frequency
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x01, LCD_CMD); //
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0xB9, LCD_CMD); //
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0xBC, LCD_CMD); // set pre_charge
// voltage/VCOMH
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x08, LCD_CMD); // (0x08);
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0xBE, LCD_CMD); // set VCOMH
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0X07, LCD_CMD); // (0x07);
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0xB6, LCD_CMD); // Set second pre-charge
// period
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x01, LCD_CMD); //
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control,
0xD5,
LCD_CMD); // enable second precharge and enternal vsl
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0X62, LCD_CMD); // (0x62);
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0xA4, LCD_CMD); // Set Normal Display Mode
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x2E, LCD_CMD); // Deactivate Scroll
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0xAF, LCD_CMD); // Switch on display
usleep(INIT_SLEEP);
// Row Address
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x75, LCD_CMD); // Set Row Address
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x00, LCD_CMD); // Start 0
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x5f, LCD_CMD); // End 95
usleep(INIT_SLEEP);
// Column Address
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x15, LCD_CMD); // Set Column Address
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x08, LCD_CMD); // Start from 8th Column of
// driver IC. This is 0th
// Column for OLED
usleep(INIT_SLEEP);
error = mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x37, LCD_CMD); // End at (8 + 47)th
// column. Each Column has 2
// pixels(segments)
usleep(INIT_SLEEP);
clear();
setNormalDisplay();
setVerticalMode();
}
SSD1327::~SSD1327()
{
}
mraa_result_t
SSD1327::draw(uint8_t* data, int bytes)
{
mraa_result_t error = MRAA_SUCCESS;
setHorizontalMode();
for (int row = 0; row < bytes; row++) {
for (uint8_t col = 0; col < 8; col += 2) {
uint8_t value = 0x0;
uint8_t bitOne = (data[row] << col) & 0x80;
uint8_t bitTwo = (data[row] << (col + 1)) & 0x80;
value |= (bitOne) ? grayHigh : 0x00;
value |= (bitTwo) ? grayLow : 0x00;
mraa_i2c_write_byte_data(m_i2c_lcd_control, value, LCD_DATA);
usleep(CMD_SLEEP - 2000);
}
}
return error;
}
/*
* **************
* virtual area
* **************
*/
mraa_result_t
SSD1327::write(std::string msg)
{
mraa_result_t error = MRAA_SUCCESS;
setVerticalMode();
for (std::string::size_type i = 0; i < msg.size(); ++i) {
writeChar(m_i2c_lcd_control, msg[i]);
}
return error;
}
mraa_result_t
SSD1327::setCursor(int row, int column)
{
mraa_result_t error = MRAA_SUCCESS;
// Column Address
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x15, LCD_CMD); /* Set Column Address */
usleep(CMD_SLEEP);
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x08 + (column * 4), LCD_CMD); /* Start Column:
Start from 8 */
usleep(CMD_SLEEP);
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x37, LCD_CMD); /* End Column */
usleep(CMD_SLEEP);
// Row Address
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x75, LCD_CMD); /* Set Row Address */
usleep(CMD_SLEEP);
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x00 + (row * 8), LCD_CMD); /* Start Row*/
usleep(CMD_SLEEP);
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x07 + (row * 8), LCD_CMD); /* End Row*/
usleep(CMD_SLEEP);
return error;
}
mraa_result_t
SSD1327::clear()
{
mraa_result_t error = MRAA_SUCCESS;
uint8_t columnIdx, rowIdx;
for (rowIdx = 0; rowIdx < 12; rowIdx++) {
// clear all columns
for (columnIdx = 0; columnIdx < 12; columnIdx++) {
writeChar(m_i2c_lcd_control, ' ');
}
}
return MRAA_SUCCESS;
}
mraa_result_t
SSD1327::home()
{
return setCursor(0, 0);
}
mraa_result_t
SSD1327::setGrayLevel(uint8_t level)
{
grayHigh = (level << 4) & 0xF0;
grayLow = level & 0x0F;
}
/*
* **************
* private area
* **************
*/
mraa_result_t
SSD1327::writeChar(mraa_i2c_context ctx, uint8_t value)
{
if (value < 0x20 || value > 0x7F) {
value = 0x20; // space
}
for (uint8_t row = 0; row < 8; row = row + 2) {
for (uint8_t col = 0; col < 8; col++) {
uint8_t data = 0x0;
uint8_t bitOne = ((BasicFont[value - 32][row]) >> col) & 0x1;
uint8_t bitTwo = ((BasicFont[value - 32][row + 1]) >> col) & 0x1;
data |= (bitOne) ? grayHigh : 0x00;
data |= (bitTwo) ? grayLow : 0x00;
mraa_i2c_write_byte_data(m_i2c_lcd_control, data, LCD_DATA);
usleep(CMD_SLEEP - 2000);
}
}
}
mraa_result_t
SSD1327::setNormalDisplay()
{
return mraa_i2c_write_byte_data(m_i2c_lcd_control,
DISPLAY_CMD_SET_NORMAL,
LCD_CMD); // set to normal display '1' is ON
}
mraa_result_t
SSD1327::setHorizontalMode()
{
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0xA0, LCD_CMD); // remap to
usleep(CMD_SLEEP);
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x42, LCD_CMD); // horizontal mode
usleep(CMD_SLEEP);
// Row Address
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x75, LCD_CMD); // Set Row Address
usleep(CMD_SLEEP);
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x00, LCD_CMD); // Start 0
usleep(CMD_SLEEP);
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x5f, LCD_CMD); // End 95
usleep(CMD_SLEEP);
// Column Address
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x15, LCD_CMD); // Set Column Address
usleep(CMD_SLEEP);
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x08, LCD_CMD); // Start from 8th Column of driver
// IC. This is 0th Column for OLED
usleep(CMD_SLEEP);
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x37, LCD_CMD); // End at (8 + 47)th column. Each
// Column has 2 pixels(or segments)
usleep(CMD_SLEEP);
}
mraa_result_t
SSD1327::setVerticalMode()
{
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0xA0, LCD_CMD); // remap to
usleep(CMD_SLEEP);
mraa_i2c_write_byte_data(m_i2c_lcd_control, 0x46, LCD_CMD); // Vertical mode
usleep(CMD_SLEEP);
}