126 lines
5.3 KiB
C++
126 lines
5.3 KiB
C++
#ifndef _ADAFRUIT_SPITFT_
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#define _ADAFRUIT_SPITFT_
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#if ARDUINO >= 100
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#include "Arduino.h"
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#include "Print.h"
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#else
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#include "WProgram.h"
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#endif
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#include <SPI.h>
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#include "Adafruit_GFX.h"
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#define USE_FAST_PINIO
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#if defined(__AVR__)
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typedef volatile uint8_t RwReg;
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#elif defined(ARDUINO_STM32_FEATHER)
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typedef volatile uint32 RwReg;
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#undef USE_FAST_PINIO
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#elif defined(__OPENCR__) || defined (__OPENCM904__)
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#undef USE_FAST_PINIO
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#elif defined(ARDUINO_FEATHER52) || defined(__arm__)
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typedef volatile uint32_t RwReg;
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#elif defined(ESP32) || defined(ESP8266)
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typedef volatile uint32_t RwReg;
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#undef USE_FAST_PINIO
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#else
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#undef USE_FAST_PINIO
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#endif
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#include "Adafruit_SPITFT_Macros.h"
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/// A heavily optimized SPI display subclass of GFX. Manages SPI bitbanging, transactions, DMA, etc! Despite being called SPITFT, the classic SPI data/command interface is also used by OLEDs.
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class Adafruit_SPITFT : public Adafruit_GFX {
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protected:
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public:
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Adafruit_SPITFT(uint16_t w, uint16_t h, int8_t _CS, int8_t _DC, int8_t _MOSI, int8_t _SCLK, int8_t _RST = -1, int8_t _MISO = -1);
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Adafruit_SPITFT(uint16_t w, uint16_t h, int8_t _CS, int8_t _DC, int8_t _RST = -1);
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virtual void begin(uint32_t freq) = 0; ///< Virtual begin() function to set SPI frequency, must be overridden in subclass. @param freq Maximum SPI hardware clock speed
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void initSPI(uint32_t freq);
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// Required Non-Transaction
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void drawPixel(int16_t x, int16_t y, uint16_t color);
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// Transaction API
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void startWrite(void);
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void endWrite(void);
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void writePixel(int16_t x, int16_t y, uint16_t color);
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void writeFillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color);
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void writeFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color);
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void writeFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color);
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// Transaction API not used by GFX
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/*!
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@brief SPI displays set an address window rectangle for blitting pixels
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@param x Top left corner x coordinate
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@param y Top left corner x coordinate
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@param w Width of window
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@param h Height of window
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*/
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virtual void setAddrWindow(uint16_t x, uint16_t y, uint16_t w, uint16_t h) = 0;
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/*!
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@brief Write a 2-byte color (must have a transaction in progress)
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@param color 16-bit 5-6-5 Color to draw
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*/
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void inline writePixel(uint16_t color) { SPI_WRITE16(color); }
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void writePixels(uint16_t * colors, uint32_t len);
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void writeColor(uint16_t color, uint32_t len);
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void pushColor(uint16_t color);
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// Recommended Non-Transaction
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void drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color);
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void drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color);
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void fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color);
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using Adafruit_GFX::drawRGBBitmap; // Check base class first
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void drawRGBBitmap(int16_t x, int16_t y,
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uint16_t *pcolors, int16_t w, int16_t h);
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void invertDisplay(boolean i);
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uint16_t color565(uint8_t r, uint8_t g, uint8_t b);
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protected:
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uint32_t _freq; ///< SPI clock frequency (for hardware SPI)
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#if defined (__AVR__) || defined(TEENSYDUINO) || defined (ESP8266) || defined (ESP32)
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int8_t _cs, _dc, _rst, _sclk, _mosi, _miso;
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#else
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int32_t _cs, ///< Arduino pin # for chip-select pin
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_dc, ///< Arduino pin # for data-command pin
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_rst, ///< Arduino pin # for reset pin
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_sclk, ///< Arduino pin # for SPI clock pin
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_mosi, ///< Arduino pin # for SPI MOSI pin
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_miso; ///< Arduino pin # for SPI MISO pin
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#endif
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#ifdef USE_FAST_PINIO
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volatile RwReg *mosiport, ///< Direct chip register for toggling MOSI with fast bitbang IO
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*misoport, ///< Direct chip register for toggling MISO with fast bitbang IO
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*clkport, ///< Direct chip register for toggling CLK with fast bitbang IO
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*dcport, ///< Direct chip register for toggling DC with fast bitbang IO
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*csport; ///< Direct chip register for toggling CS with fast bitbang IO
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RwReg mosipinmask, ///< bitmask for turning on/off MOSI with fast register bitbang IO
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misopinmask, ///< bitmask for turning on/off MISO with fast register bitbang IO
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clkpinmask, ///< bitmask for turning on/off CLK with fast register bitbang IO
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cspinmask, ///< bitmask for turning on/off CS with fast register bitbang IO
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dcpinmask; ///< bitmask for turning on/off DC with fast register bitbang IO
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#endif
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void writeCommand(uint8_t cmd);
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void spiWrite(uint8_t v);
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uint8_t spiRead(void);
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uint8_t invertOnCommand = 0, ///< SPI command byte to turn on invert
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invertOffCommand = 0; ///< SPI command byte to turn off invert
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int16_t _xstart = 0; ///< Many displays don't have pixels starting at (0,0) of the internal framebuffer, this is the x offset from 0 to align
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int16_t _ystart = 0; ///< Many displays don't have pixels starting at (0,0) of the internal framebuffer, this is the y offset from 0 to align
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};
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#endif
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