upm/src/lcd/ssd1327.cxx
Jon Trulson 7323b58b61 ssd1327: throw exception(s) on fatal errors
Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
2015-09-17 17:10:16 -07:00

320 lines
10 KiB
C++

/*
* 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 <stdexcept>
#include <string>
#include <unistd.h>
#include "hd44780_bits.h"
#include "ssd1327.h"
using namespace upm;
#define INIT_SLEEP 50000
#define CMD_SLEEP 10000
SSD1327::SSD1327(int bus_in, int addr_in) : m_i2c_lcd_control(bus_in)
{
mraa::Result error = mraa::SUCCESS;
m_lcd_control_address = addr_in;
m_name = "SSD1327";
error = m_i2c_lcd_control.address(m_lcd_control_address);
if (error != mraa::SUCCESS) {
throw std::invalid_argument(std::string(__FUNCTION__) +
": I2c.address() failed");
return;
}
usleep(INIT_SLEEP);
m_i2c_lcd_control.writeReg(LCD_CMD, 0xFD); // Unlock OLED driver IC MCU
// interface from entering command.
// i.e: Accept commands
usleep(INIT_SLEEP);
m_i2c_lcd_control.writeReg(LCD_CMD, 0x12);
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0xAE); // Set display off
usleep(INIT_SLEEP);
m_i2c_lcd_control.writeReg(LCD_CMD, 0xA8); // set multiplex ratio
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x5F); // 96
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0xA1); // set display start line
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x00); //
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0xA2); // set display offset
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x60);
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0xA0); // set remap
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x46);
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0xAB); // set vdd internal
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x01); //
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x81); // set contrasr
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x53); // 100 nit
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0xB1); // Set Phase Length
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0X51); //
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0xB3); // Set Display Clock Divide Ratio/Oscillator
// Frequency
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x01); //
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0xB9); //
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0xBC); // set pre_charge
// voltage/VCOMH
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x08); // (0x08);
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0xBE); // set VCOMH
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0X07); // (0x07);
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0xB6); // Set second pre-charge
// period
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x01); //
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0xD5); // enable second precharge and enternal vsl
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0X62); // (0x62);
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0xA4); // Set Normal Display Mode
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x2E); // Deactivate Scroll
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0xAF); // Switch on display
usleep(INIT_SLEEP);
// Row Address
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x75); // Set Row Address
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x00); // Start 0
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x5f); // End 95
usleep(INIT_SLEEP);
// Column Address
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x15); // Set Column Address
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x08); // Start from 8th Column of
// driver IC. This is 0th
// Column for OLED
usleep(INIT_SLEEP);
error = m_i2c_lcd_control.writeReg(LCD_CMD, 0x37); // End at (8 + 47)th
// column. Each Column has 2
// pixels(segments)
usleep(INIT_SLEEP);
clear();
setNormalDisplay();
setVerticalMode();
}
SSD1327::~SSD1327()
{
}
mraa::Result
SSD1327::draw(uint8_t* data, int bytes)
{
mraa::Result 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;
m_i2c_lcd_control.writeReg(LCD_DATA, value);
usleep(CMD_SLEEP - 2000);
}
}
return error;
}
/*
* **************
* virtual area
* **************
*/
mraa::Result
SSD1327::write(std::string msg)
{
mraa::Result error = mraa::SUCCESS;
setVerticalMode();
for (std::string::size_type i = 0; i < msg.size(); ++i) {
writeChar(msg[i]);
}
return error;
}
mraa::Result
SSD1327::setCursor(int row, int column)
{
mraa::Result error = mraa::SUCCESS;
// Column Address
m_i2c_lcd_control.writeReg(LCD_CMD, 0x15); /* Set Column Address */
usleep(CMD_SLEEP);
m_i2c_lcd_control.writeReg(LCD_CMD, 0x08 + (column * 4)); /* Start Column:
Start from 8 */
usleep(CMD_SLEEP);
m_i2c_lcd_control.writeReg(LCD_CMD, 0x37); /* End Column */
usleep(CMD_SLEEP);
// Row Address
m_i2c_lcd_control.writeReg(LCD_CMD, 0x75); /* Set Row Address */
usleep(CMD_SLEEP);
m_i2c_lcd_control.writeReg(LCD_CMD, 0x00 + (row * 8)); /* Start Row*/
usleep(CMD_SLEEP);
m_i2c_lcd_control.writeReg(LCD_CMD, 0x07 + (row * 8)); /* End Row*/
usleep(CMD_SLEEP);
return error;
}
mraa::Result
SSD1327::clear()
{
mraa::Result error = mraa::SUCCESS;
uint8_t columnIdx, rowIdx;
for (rowIdx = 0; rowIdx < 12; rowIdx++) {
// clear all columns
for (columnIdx = 0; columnIdx < 12; columnIdx++) {
writeChar(' ');
}
}
return mraa::SUCCESS;
}
mraa::Result
SSD1327::home()
{
return setCursor(0, 0);
}
void
SSD1327::setGrayLevel(uint8_t level)
{
grayHigh = (level << 4) & 0xF0;
grayLow = level & 0x0F;
}
/*
* **************
* private area
* **************
*/
mraa::Result
SSD1327::writeChar(uint8_t value)
{
mraa::Result rv = mraa::SUCCESS;
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;
rv = m_i2c_lcd_control.writeReg(LCD_DATA, data);
usleep(CMD_SLEEP - 2000);
}
}
return rv;
}
mraa::Result
SSD1327::setNormalDisplay()
{
return m_i2c_lcd_control.writeReg(LCD_CMD,
DISPLAY_CMD_SET_NORMAL); // set to normal display '1' is ON
}
mraa::Result
SSD1327::setHorizontalMode()
{
mraa::Result rv = mraa::SUCCESS;
rv = m_i2c_lcd_control.writeReg(LCD_CMD, 0xA0); // remap to
usleep(CMD_SLEEP);
rv = m_i2c_lcd_control.writeReg(LCD_CMD, 0x42); // horizontal mode
usleep(CMD_SLEEP);
// Row Address
rv = m_i2c_lcd_control.writeReg(LCD_CMD, 0x75); // Set Row Address
usleep(CMD_SLEEP);
rv = m_i2c_lcd_control.writeReg(LCD_CMD, 0x00); // Start 0
usleep(CMD_SLEEP);
rv = m_i2c_lcd_control.writeReg(LCD_CMD, 0x5f); // End 95
usleep(CMD_SLEEP);
// Column Address
rv = m_i2c_lcd_control.writeReg(LCD_CMD, 0x15); // Set Column Address
usleep(CMD_SLEEP);
rv = m_i2c_lcd_control.writeReg(LCD_CMD, 0x08); // Start from 8th Column of driver
// IC. This is 0th Column for OLED
usleep(CMD_SLEEP);
rv = m_i2c_lcd_control.writeReg(LCD_CMD, 0x37); // End at (8 + 47)th column. Each
// Column has 2 pixels(or segments)
usleep(CMD_SLEEP);
return rv;
}
mraa::Result
SSD1327::setVerticalMode()
{
mraa::Result rv = mraa::SUCCESS;
rv = m_i2c_lcd_control.writeReg(LCD_CMD, 0xA0); // remap to
usleep(CMD_SLEEP);
rv = m_i2c_lcd_control.writeReg(LCD_CMD, 0x46); // Vertical mode
usleep(CMD_SLEEP);
return rv;
}