mirror of
https://github.com/eclipse/upm.git
synced 2025-03-16 05:27:28 +03:00
313 lines
10 KiB
C++
313 lines
10 KiB
C++
/*
|
|
* Author: Marc Graham <marc@m2ag.net>
|
|
* Copyright (c) 2015 Intel Corporation
|
|
*
|
|
* Adapted from ssd1308 library.
|
|
* 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 <syslog.h>
|
|
|
|
#include "hd44780_bits.hpp"
|
|
#include "ssd1306.hpp"
|
|
|
|
using namespace upm;
|
|
|
|
SSD1306::SSD1306(int bus_in, int addr_in) : m_i2c_lcd_control(bus_in)
|
|
{
|
|
int vccstate = SSD1306_SWITCHCAPVCC;
|
|
_vccstate = vccstate;
|
|
|
|
int LCD_CMD = 0x00;
|
|
|
|
m_lcd_control_address = addr_in;
|
|
m_name = "SSD1306";
|
|
|
|
mraa::Result error = m_i2c_lcd_control.address(m_lcd_control_address);
|
|
|
|
if (error != mraa::SUCCESS) {
|
|
throw std::runtime_error(std::string(__FUNCTION__) +
|
|
": mraa_i2c_address() failed");
|
|
return;
|
|
}
|
|
|
|
error = m_i2c_lcd_control.frequency(mraa::I2C_FAST);
|
|
|
|
if (error != mraa::SUCCESS) {
|
|
syslog(LOG_WARNING, "%s: mraa_i2c_frequency(MRAA_I2C_FAST) failed, using default speed", std::string(__FUNCTION__).c_str());
|
|
}
|
|
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, DISPLAY_CMD_OFF); // display off
|
|
usleep(4500);
|
|
//ADD 1306 stuff
|
|
// Init sequence for 128x64 OLED module // 0xAE
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_SETDISPLAYCLOCKDIV); // 0xD5
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0x80); // the suggested ratio 0x80
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_SETMULTIPLEX); // 0xA8
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0x3F);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_SETDISPLAYOFFSET); // 0xD3
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0x0); // no offset
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_SETSTARTLINE | 0x0); // line #0
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_CHARGEPUMP); // 0x8D
|
|
if (vccstate == SSD1306_EXTERNALVCC) {
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0x10);
|
|
} else {
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,0x14);
|
|
}
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_MEMORYMODE); // 0x20
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0x00); // 0x0 act like ks0108
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_SEGREMAP | 0x1);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_COMSCANDEC);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_SETCOMPINS); // 0xDA
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0x12);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_SETCONTRAST); // 0x81
|
|
if (vccstate == SSD1306_EXTERNALVCC) {
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0x9F);
|
|
} else {
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0xCF);
|
|
}
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_SETPRECHARGE); // 0xd9
|
|
if (vccstate == SSD1306_EXTERNALVCC) {
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0x22);
|
|
} else {
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,0xF1);
|
|
}
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_SETVCOMDETECT); // 0xDB
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0x40);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_DISPLAYALLON_RESUME); // 0xA4
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, DISPLAY_CMD_SET_NORMAL_1306); // 0xA6
|
|
|
|
//END 1306 Stuff
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, DISPLAY_CMD_ON); // display on
|
|
usleep(4500);
|
|
setNormalDisplay(); // set to normal display '1' is ON
|
|
|
|
clear();
|
|
setAddressingMode(PAGE);
|
|
}
|
|
|
|
SSD1306::~SSD1306()
|
|
{
|
|
}
|
|
|
|
mraa::Result
|
|
SSD1306::draw(uint8_t* data, int bytes)
|
|
{
|
|
mraa::Result error = mraa::SUCCESS;
|
|
|
|
setAddressingMode(HORIZONTAL);
|
|
for (int idx = 0; idx < bytes; idx++) {
|
|
m_i2c_lcd_control.writeReg(LCD_DATA, data[idx]);
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* **************
|
|
* virtual area
|
|
* **************
|
|
*/
|
|
mraa::Result
|
|
SSD1306::write(std::string msg)
|
|
{
|
|
mraa::Result error = mraa::SUCCESS;
|
|
|
|
setAddressingMode(PAGE);
|
|
for (std::string::size_type i = 0; i < msg.size(); ++i) {
|
|
writeChar(msg[i]);
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
mraa::Result
|
|
SSD1306::setCursor(int row, int column)
|
|
{
|
|
mraa::Result error = mraa::SUCCESS;
|
|
|
|
error = m_i2c_lcd_control.writeReg(LCD_CMD, BASE_PAGE_START_ADDR + row); // set page address
|
|
error = m_i2c_lcd_control.writeReg(LCD_CMD,
|
|
BASE_LOW_COLUMN_ADDR + (8 * column & 0x0F)); // set column
|
|
// lower address
|
|
error = m_i2c_lcd_control.writeReg(LCD_CMD,
|
|
BASE_HIGH_COLUMN_ADDR +
|
|
((8 * column >> 4) & 0x0F)); // set column higher address
|
|
|
|
return error;
|
|
}
|
|
|
|
mraa::Result
|
|
SSD1306::clear()
|
|
{
|
|
mraa::Result error = mraa::SUCCESS;
|
|
uint8_t columnIdx, rowIdx;
|
|
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, DISPLAY_CMD_OFF); // display off
|
|
for (rowIdx = 0; rowIdx < 8; rowIdx++) {
|
|
setCursor(rowIdx, 0);
|
|
|
|
// clear all columns
|
|
for (columnIdx = 0; columnIdx < 16; columnIdx++) {
|
|
writeChar(' ');
|
|
}
|
|
}
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, DISPLAY_CMD_ON); // display on
|
|
home();
|
|
|
|
return error;
|
|
}
|
|
|
|
mraa::Result
|
|
SSD1306::home()
|
|
{
|
|
return setCursor(0, 0);
|
|
}
|
|
|
|
/*
|
|
* **************
|
|
* private area
|
|
* **************
|
|
*/
|
|
mraa::Result
|
|
SSD1306::writeChar(uint8_t value)
|
|
{
|
|
mraa::Result rv;
|
|
if (value < 0x20 || value > 0x7F) {
|
|
value = 0x20; // space
|
|
}
|
|
|
|
for (uint8_t idx = 0; idx < 8; idx++) {
|
|
rv = m_i2c_lcd_control.writeReg(LCD_DATA, BasicFont[value - 32][idx]);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
mraa::Result
|
|
SSD1306::setNormalDisplay()
|
|
{
|
|
return m_i2c_lcd_control.writeReg(LCD_CMD,
|
|
DISPLAY_CMD_SET_NORMAL_1306); // set to normal display '1' is
|
|
// ON
|
|
}
|
|
|
|
mraa::Result
|
|
SSD1306::setAddressingMode(displayAddressingMode mode)
|
|
{
|
|
mraa::Result rv;
|
|
rv =m_i2c_lcd_control.writeReg(LCD_CMD, DISPLAY_CMD_MEM_ADDR_MODE); // set addressing mode
|
|
rv =m_i2c_lcd_control.writeReg(LCD_CMD, mode); // set page addressing mode
|
|
return rv;
|
|
}
|
|
|
|
|
|
mraa::Result
|
|
SSD1306::invert(bool i)
|
|
{
|
|
mraa::Result rv;
|
|
if(i){
|
|
rv = m_i2c_lcd_control.writeReg(LCD_CMD, DISPLAY_CMD_SET_INVERT_1306);
|
|
} else {
|
|
rv = m_i2c_lcd_control.writeReg(LCD_CMD, DISPLAY_CMD_SET_NORMAL_1306);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
|
|
void SSD1306::startscrollright(uint8_t start, uint8_t stop){
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,SSD1306_RIGHT_HORIZONTAL_SCROLL);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,0X00);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,start);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,0X00);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,stop);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,0X00);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,0XFF);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,SSD1306_ACTIVATE_SCROLL);
|
|
}
|
|
|
|
|
|
void SSD1306::startscrollleft(uint8_t start, uint8_t stop){
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,SSD1306_LEFT_HORIZONTAL_SCROLL);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,0X00);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,start);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,0X00);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,stop);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,0X00);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,0XFF);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,SSD1306_ACTIVATE_SCROLL);
|
|
}
|
|
|
|
void SSD1306::startscrolldiagright(uint8_t start, uint8_t stop){
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_SET_VERTICAL_SCROLL_AREA);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0X00);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_LCDHEIGHT);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_VERTICAL_AND_RIGHT_HORIZONTAL_SCROLL);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0X00);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, start);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0X00);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, stop);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0X01);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_ACTIVATE_SCROLL);
|
|
}
|
|
|
|
void SSD1306::startscrolldiagleft(uint8_t start, uint8_t stop){
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_SET_VERTICAL_SCROLL_AREA);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0X00);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_LCDHEIGHT);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_VERTICAL_AND_LEFT_HORIZONTAL_SCROLL);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0X00);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, start);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0X00);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, stop);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, 0X01);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD, SSD1306_ACTIVATE_SCROLL);
|
|
}
|
|
|
|
void SSD1306::stopscroll(void){
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,SSD1306_DEACTIVATE_SCROLL);
|
|
}
|
|
|
|
// Dim the display
|
|
// dim = true: display is dimmed
|
|
// dim = false: display is normal
|
|
void SSD1306::dim(bool dim) {
|
|
uint8_t contrast;
|
|
|
|
if (dim) {
|
|
contrast = 0; // Dimmed display
|
|
} else {
|
|
if (_vccstate == SSD1306_EXTERNALVCC) {
|
|
contrast = 0x9F;
|
|
} else {
|
|
contrast = 0xCF;
|
|
}
|
|
}
|
|
// the range of contrast to too small to be really useful
|
|
// it is useful to dim the display
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,SSD1306_SETCONTRAST);
|
|
m_i2c_lcd_control.writeReg(LCD_CMD,contrast);
|
|
}
|