upm/src/lcm1602/lcm1602.hpp
Noel Eck 5e7a8b41a3 memory: Hide all copy/assignment ops for class w/heap allocation
Many of the UPM libraries allocate space on the heap but do not
explicitly handle copying and assignment.  This commit uses C++11 delete
to forbit both the copy and assignment operator for these classes.

The C++ examples which used assignment operators to initialize class
instances were also updated since it did not appear necessary in those
cases to use the assignment operator.

Signed-off-by: Noel Eck <noel.eck@intel.com>
2017-07-14 11:47:06 -07:00

264 lines
7.8 KiB
C++

/*
* Author: Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2016 Intel Corporation.
*
* Based on UPM C++ drivers originally developed by:
* Author: Daniel Mosquera
* Copyright (c) 2013 Daniel Mosquera
*
* Author: Thomas Ingleby <thomas.c.ingleby@intel.com>
* Copyright (c) 2014 Intel Corporation.
*
* Contributions: Sergey Kiselev <sergey.kiselev@intel.com>
*
* 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.
*/
#pragma once
#include <string>
#include <vector>
#include "lcm1602.h"
namespace upm
{
/**
* @brief LCM1602 Display library
* @defgroup lcm1602 libupm-lcm1602
* @ingroup dfrobot sainsmart seeed sparkfun adafruit i2c gpio display
*/
/**
* @library lcm1602
* @sensor lcm1602
* @comname LCD Display Driver for the LCM1602 Controller for HD44780-based Displays
* @type display
* @man adafruit sparkfun seeed
* @web https://www.adafruit.com/datasheets/TC1602A-01T.pdf
* @con i2c gpio
*
* @brief API for the LCM1602 I2C controller for HD44780-based displays
*
* This supports all sizes of HD44780 displays, from 16x2 to 4x20. The
* controller has no idea of the actual display hardware, so it lets you write
* farther than you can see. These displays with such controllers are available
* from various manufacturers with different I2C addresses. Adafruit*
* TC1602A-01T seems to be a well-documented example. The driver also supports
* parallel GPIO connections directly to the HD44780 in case you are not using
* an I2C expander/backpack.
*
* @image html lcm1602.jpeg
* Example for LCM1602 displays that use the I2C bus
* @snippet lcm1602-i2c.cxx Interesting
* Code sample for GPIO based LCM1602 displays
* @snippet lcm1602-parallel.cxx Interesting
*/
class Lcm1602
{
public:
/**
* Lcm1602 constructor; calls libmraa initialisation functions
*
* @param bus I2C bus to use. Default 0 (autodetect).
* @param address Slave address the LCD is registered on. Default 0x27
* @param isExpander True if we are dealing with an I2C expander,
* false otherwise. Default is true.
* @param numColumns Number of columns the display has. Default 16.
* @param numRows Number of rows the display has. Default 2.
*/
Lcm1602(int bus = 0, int address = 0x27, bool isExpander=true,
uint8_t numColumns = 16, uint8_t numRows = 2);
/**
* Lcm1602 alternate constructor, used for GPIO based HD44780
* controllers supporting RS, Enable, and 4 data pins in 4-bit
* mode.
*
* @param rs Register select pin
* @param enable Enable pin
* @param d0 Data 0 pin
* @param d1 Data 1 pin
* @param d2 Data 2 pin
* @param d3 Data 3 pin
* @param numColumns Number of columns the display has. Default 16.
* @param numRows Number of rows the display has. Default 2.
*/
Lcm1602(int rs, int enable,
int d0, int d1, int d2, int d3,
uint8_t numColumns = 16, uint8_t numRows = 2);
/**
* Lcm1602 destructor
*/
~Lcm1602();
/**
* Writes a string to the LCD
*
* @param msg std::string to write to the display; note: only ASCII
* characters are supported
* @return Result of the operation
*/
upm_result_t write(std::string msg);
/**
* Sets the cursor to specified coordinates
*
* @param row Row to set the cursor to
* @param column Column to set the cursor to
* @return Result of the operation
*/
upm_result_t setCursor(int row, int column);
/**
* Clears the display of all characters
*
* @return Result of the operation
*/
upm_result_t clear();
/**
* Returns to the original coordinates (0,0)
*
* @return Result of the operation
*/
upm_result_t home();
/**
* Create a custom character
*
* @param charSlot the character slot to write, only 8 are available
* @param charData A vector containing 8 bytes making up the character
* @return Result of operation
*/
upm_result_t createChar(uint8_t charSlot,
std::vector<uint8_t> charData);
/**
* Turn the display on
*
* @return Result of operation
*/
upm_result_t displayOn();
/**
* Turn the display off
*
* @return Result of operation
*/
upm_result_t displayOff();
/**
* Turn the cursor on
*
* @return Result of operation
*/
upm_result_t cursorOn();
/**
* Turn the cursor off
*
* @return Result of operation
*/
upm_result_t cursorOff();
/**
* Turn cursor blink on
*
* @return Result of operation
*/
upm_result_t cursorBlinkOn();
/**
* Turn cursor blink off
*
* @return Result of operation
*/
upm_result_t cursorBlinkOff();
/**
* Turn backlight on
*
* @return Result of operation
*/
upm_result_t backlightOn();
/**
* Turn backlight off
*
* @return Result of operation
*/
upm_result_t backlightOff();
/**
* Scroll the display left, without changing the character RAM
*
* @return Result of operation
*/
upm_result_t scrollDisplayLeft();
/**
* Scroll the display right, without changing the character RAM
*
* @return Result of operation
*/
upm_result_t scrollDisplayRight();
/**
* set the entry mode so that characters are added left to right
*
* @return Result of operation
*/
upm_result_t entryLeftToRight();
/**
* set the entry mode so that characters are added right to left
*
* @return Result of operation
*/
upm_result_t entryRightToLeft();
/**
* Right justify text entered from the cursor
*
* @return Result of operation
*/
upm_result_t autoscrollOn();
/**
* Left justify text entered from the cursor
*
* @return Result of operation
*/
upm_result_t autoscrollOff();
protected:
lcm1602_context m_lcm1602;
upm_result_t command(uint8_t cmd);
upm_result_t data(uint8_t data);
private:
/* Disable implicit copy and assignment operators */
Lcm1602(const Lcm1602&) = delete;
Lcm1602 &operator=(const Lcm1602&) = delete;
};
}