101 lines
2.9 KiB
C++
101 lines
2.9 KiB
C++
/*********************************************************************
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This is a library for our Monochrome Nokia 5110 LCD Displays
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Pick one up today in the adafruit shop!
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------> http://www.adafruit.com/products/338
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These displays use SPI to communicate, 4 or 5 pins are required to
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interface
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Adafruit invests time and resources providing this open source code,
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please support Adafruit and open-source hardware by purchasing
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products from Adafruit!
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Written by Limor Fried/Ladyada for Adafruit Industries.
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BSD license, check license.txt for more information
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All text above, and the splash screen must be included in any redistribution
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*********************************************************************/
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#ifndef _ADAFRUIT_PCD8544_H
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#define _ADAFRUIT_PCD8544_H
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#if defined(ARDUINO) && ARDUINO >= 100
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#include "Arduino.h"
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#else
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#include "WProgram.h"
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#include "pins_arduino.h"
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#endif
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#include <SPI.h>
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#if defined(__SAM3X8E__) || defined(ARDUINO_ARCH_SAMD)
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typedef volatile RwReg PortReg;
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typedef uint32_t PortMask;
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#else
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typedef volatile uint8_t PortReg;
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typedef uint8_t PortMask;
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#endif
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#define BLACK 1
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#define WHITE 0
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#define LCDWIDTH 84
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#define LCDHEIGHT 48
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#define PCD8544_POWERDOWN 0x04
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#define PCD8544_ENTRYMODE 0x02
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#define PCD8544_EXTENDEDINSTRUCTION 0x01
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#define PCD8544_DISPLAYBLANK 0x0
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#define PCD8544_DISPLAYNORMAL 0x4
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#define PCD8544_DISPLAYALLON 0x1
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#define PCD8544_DISPLAYINVERTED 0x5
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// H = 0
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#define PCD8544_FUNCTIONSET 0x20
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#define PCD8544_DISPLAYCONTROL 0x08
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#define PCD8544_SETYADDR 0x40
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#define PCD8544_SETXADDR 0x80
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// H = 1
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#define PCD8544_SETTEMP 0x04
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#define PCD8544_SETBIAS 0x10
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#define PCD8544_SETVOP 0x80
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// Default to max SPI clock speed for PCD8544 of 4 mhz (16mhz / 4) for normal Arduinos.
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// This can be modified to change the clock speed if necessary (like for supporting other hardware).
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#define PCD8544_SPI_CLOCK_DIV SPI_CLOCK_DIV4
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class Adafruit_PCD8544 : public Adafruit_GFX {
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public:
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// Software SPI with explicit CS pin.
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Adafruit_PCD8544(int8_t SCLK, int8_t DIN, int8_t DC, int8_t CS, int8_t RST);
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// Software SPI with CS tied to ground. Saves a pin but other pins can't be shared with other hardware.
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Adafruit_PCD8544(int8_t SCLK, int8_t DIN, int8_t DC, int8_t RST);
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// Hardware SPI based on hardware controlled SCK (SCLK) and MOSI (DIN) pins. CS is still controlled by any IO pin.
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// NOTE: MISO and SS will be set as an input and output respectively, so be careful sharing those pins!
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Adafruit_PCD8544(int8_t DC, int8_t CS, int8_t RST);
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void begin(uint8_t contrast = 40, uint8_t bias = 0x04);
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void command(uint8_t c);
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void data(uint8_t c);
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void setContrast(uint8_t val);
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void clearDisplay(void);
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void display();
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void drawPixel(int16_t x, int16_t y, uint16_t color);
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uint8_t getPixel(int8_t x, int8_t y);
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private:
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int8_t _din, _sclk, _dc, _rst, _cs;
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volatile PortReg *mosiport, *clkport;
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PortMask mosipinmask, clkpinmask;
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void spiWrite(uint8_t c);
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bool isHardwareSPI();
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};
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#endif
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