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Tasmota/lib/Adafruit_ILI9341-1.2.0-Tasm.../Adafruit_ILI9341.cpp

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/*!
* @file Adafruit_ILI9341.cpp
*
* @mainpage Adafruit ILI9341 TFT Displays
*
* @section intro_sec Introduction
*
* This is the documentation for Adafruit's ILI9341 driver for the
* Arduino platform.
*
* This library works with the Adafruit 2.8" Touch Shield V2 (SPI)
* http://www.adafruit.com/products/1651
*
* Adafruit 2.4" TFT LCD with Touchscreen Breakout w/MicroSD Socket - ILI9341
* https://www.adafruit.com/product/2478
*
* 2.8" TFT LCD with Touchscreen Breakout Board w/MicroSD Socket - ILI9341
* https://www.adafruit.com/product/1770
*
* 2.2" 18-bit color TFT LCD display with microSD card breakout - ILI9340
* https://www.adafruit.com/product/1770
*
* TFT FeatherWing - 2.4" 320x240 Touchscreen For All Feathers
* https://www.adafruit.com/product/3315
*
* These displays use SPI to communicate, 4 or 5 pins are required
* to interface (RST is optional).
*
* Adafruit invests time and resources providing this open source code,
* please support Adafruit and open-source hardware by purchasing
* products from Adafruit!
*
* @section dependencies Dependencies
*
* This library depends on <a href="https://github.com/adafruit/Adafruit_GFX">
* Adafruit_GFX</a> being present on your system. Please make sure you have
* installed the latest version before using this library.
*
* @section author Author
*
* Written by Limor "ladyada" Fried for Adafruit Industries.
*
* @section license License
*
* BSD license, all text here must be included in any redistribution.
*
*/
#include "Adafruit_ILI9341.h"
#ifndef ARDUINO_STM32_FEATHER
#include "pins_arduino.h"
#ifndef RASPI
#include "wiring_private.h"
#endif
#endif
#include <limits.h>
#if defined (ARDUINO_ARCH_ARC32) || defined (ARDUINO_MAXIM)
#define SPI_DEFAULT_FREQ 16000000
#elif defined (__AVR__) || defined(TEENSYDUINO)
#define SPI_DEFAULT_FREQ 8000000
#elif defined(ESP8266) || defined(ESP32)
#define SPI_DEFAULT_FREQ 40000000
#elif defined(RASPI)
#define SPI_DEFAULT_FREQ 80000000
#elif defined(ARDUINO_ARCH_STM32F1)
#define SPI_DEFAULT_FREQ 36000000
#else
#define SPI_DEFAULT_FREQ 24000000 ///< Default SPI data clock frequency
#endif
#define MADCTL_MY 0x80 ///< Bottom to top
#define MADCTL_MX 0x40 ///< Right to left
#define MADCTL_MV 0x20 ///< Reverse Mode
#define MADCTL_ML 0x10 ///< LCD refresh Bottom to top
#define MADCTL_RGB 0x00 ///< Red-Green-Blue pixel order
#define MADCTL_BGR 0x08 ///< Blue-Green-Red pixel order
#define MADCTL_MH 0x04 ///< LCD refresh right to left
/**************************************************************************/
/*!
@brief Instantiate Adafruit ILI9341 driver with software SPI
@param cs Chip select pin #
@param dc Data/Command pin #
@param mosi SPI MOSI pin #
@param sclk SPI Clock pin #
@param rst Reset pin # (optional, pass -1 if unused)
@param miso SPI MISO pin # (optional, pass -1 if unused)
*/
/**************************************************************************/
Adafruit_ILI9341::Adafruit_ILI9341(int8_t cs, int8_t dc, int8_t mosi,
int8_t sclk, int8_t rst, int8_t miso) : Adafruit_SPITFT(ILI9341_TFTWIDTH, ILI9341_TFTHEIGHT, cs, dc, mosi, sclk, rst, miso) {
}
/**************************************************************************/
/*!
@brief Instantiate Adafruit ILI9341 driver with hardware SPI
@param cs Chip select pin #
@param dc Data/Command pin #
@param rst Reset pin # (optional, pass -1 if unused)
*/
/**************************************************************************/
Adafruit_ILI9341::Adafruit_ILI9341(int8_t cs, int8_t dc, int8_t rst) : Adafruit_SPITFT(ILI9341_TFTWIDTH, ILI9341_TFTHEIGHT, cs, dc, rst) {
}
static const uint8_t PROGMEM initcmd[] = {
0xEF, 3, 0x03, 0x80, 0x02,
0xCF, 3, 0x00, 0xC1, 0x30,
0xED, 4, 0x64, 0x03, 0x12, 0x81,
0xE8, 3, 0x85, 0x00, 0x78,
0xCB, 5, 0x39, 0x2C, 0x00, 0x34, 0x02,
0xF7, 1, 0x20,
0xEA, 2, 0x00, 0x00,
ILI9341_PWCTR1 , 1, 0x23, // Power control VRH[5:0]
ILI9341_PWCTR2 , 1, 0x10, // Power control SAP[2:0];BT[3:0]
ILI9341_VMCTR1 , 2, 0x3e, 0x28, // VCM control
ILI9341_VMCTR2 , 1, 0x86, // VCM control2
ILI9341_MADCTL , 1, 0x48, // Memory Access Control
ILI9341_VSCRSADD, 1, 0x00, // Vertical scroll zero
ILI9341_PIXFMT , 1, 0x55,
ILI9341_FRMCTR1 , 2, 0x00, 0x18,
ILI9341_DFUNCTR , 3, 0x08, 0x82, 0x27, // Display Function Control
0xF2, 1, 0x00, // 3Gamma Function Disable
ILI9341_GAMMASET , 1, 0x01, // Gamma curve selected
ILI9341_GMCTRP1 , 15, 0x0F, 0x31, 0x2B, 0x0C, 0x0E, 0x08, // Set Gamma
0x4E, 0xF1, 0x37, 0x07, 0x10, 0x03, 0x0E, 0x09, 0x00,
ILI9341_GMCTRN1 , 15, 0x00, 0x0E, 0x14, 0x03, 0x11, 0x07, // Set Gamma
0x31, 0xC1, 0x48, 0x08, 0x0F, 0x0C, 0x31, 0x36, 0x0F,
ILI9341_SLPOUT , 0x80, // Exit Sleep
ILI9341_DISPON , 0x80, // Display on
0x00 // End of list
};
/**************************************************************************/
/*!
@brief Initialize ILI9341 chip
Connects to the ILI9341 over SPI and sends initialization procedure commands
@param freq Desired SPI clock frequency
*/
/**************************************************************************/
void Adafruit_ILI9341::begin(uint32_t freq) {
if(!freq) freq = SPI_DEFAULT_FREQ;
_freq = freq;
initSPI(freq);
startWrite();
uint8_t cmd, x, numArgs;
const uint8_t *addr = initcmd;
while((cmd = pgm_read_byte(addr++)) > 0) {
writeCommand(cmd);
x = pgm_read_byte(addr++);
numArgs = x & 0x7F;
while(numArgs--) spiWrite(pgm_read_byte(addr++));
if(x & 0x80) delay(120);
}
endWrite();
_width = ILI9341_TFTWIDTH;
_height = ILI9341_TFTHEIGHT;
}
/**************************************************************************/
/*!
@brief Set origin of (0,0) and orientation of TFT display
@param m The index for rotation, from 0-3 inclusive
*/
/**************************************************************************/
void Adafruit_ILI9341::setRotation(uint8_t m) {
rotation = m % 4; // can't be higher than 3
switch (rotation) {
case 0:
m = (MADCTL_MX | MADCTL_BGR);
_width = ILI9341_TFTWIDTH;
_height = ILI9341_TFTHEIGHT;
break;
case 1:
m = (MADCTL_MV | MADCTL_BGR);
_width = ILI9341_TFTHEIGHT;
_height = ILI9341_TFTWIDTH;
break;
case 2:
m = (MADCTL_MY | MADCTL_BGR);
_width = ILI9341_TFTWIDTH;
_height = ILI9341_TFTHEIGHT;
break;
case 3:
m = (MADCTL_MX | MADCTL_MY | MADCTL_MV | MADCTL_BGR);
_width = ILI9341_TFTHEIGHT;
_height = ILI9341_TFTWIDTH;
break;
}
startWrite();
writeCommand(ILI9341_MADCTL);
spiWrite(m);
endWrite();
}
/**************************************************************************/
/*!
@brief Enable/Disable display color inversion
@param invert True to invert, False to have normal color
*/
/**************************************************************************/
void Adafruit_ILI9341::invertDisplay(boolean invert) {
startWrite();
writeCommand(invert ? ILI9341_INVON : ILI9341_INVOFF);
endWrite();
}
/**************************************************************************/
/*!
@brief Scroll display memory
@param y How many pixels to scroll display by
*/
/**************************************************************************/
void Adafruit_ILI9341::scrollTo(uint16_t y) {
startWrite();
writeCommand(ILI9341_VSCRSADD);
SPI_WRITE16(y);
endWrite();
}
/**************************************************************************/
void Adafruit_ILI9341::setScrollMargins(uint16_t top, uint16_t bottom)
{
uint16_t height = _height - (top + bottom);
startWrite();
writeCommand(0x33);
SPI_WRITE16(top);
SPI_WRITE16(height);
SPI_WRITE16(bottom);
endWrite();
}
/**************************************************************************/
/*!
@brief Set the "address window" - the rectangle we will write to RAM with the next chunk of SPI data writes. The ILI9341 will automatically wrap the data as each row is filled
@param x TFT memory 'x' origin
@param y TFT memory 'y' origin
@param w Width of rectangle
@param h Height of rectangle
*/
/**************************************************************************/
void Adafruit_ILI9341::setAddrWindow(uint16_t x, uint16_t y, uint16_t w, uint16_t h) {
uint32_t xa = ((uint32_t)x << 16) | (x+w-1);
uint32_t ya = ((uint32_t)y << 16) | (y+h-1);
writeCommand(ILI9341_CASET); // Column addr set
SPI_WRITE32(xa);
writeCommand(ILI9341_PASET); // Row addr set
SPI_WRITE32(ya);
writeCommand(ILI9341_RAMWR); // write to RAM
}
/**************************************************************************/
/*!
@brief Read 8 bits of data from ILI9341 configuration memory. NOT from RAM!
This is highly undocumented/supported, it's really a hack but kinda works?
@param command The command register to read data from
@param index The byte index into the command to read from
@return Unsigned 8-bit data read from ILI9341 register
*/
/**************************************************************************/
uint8_t Adafruit_ILI9341::readcommand8(uint8_t command, uint8_t index) {
uint32_t freq = _freq;
if(_freq > 24000000) _freq = 24000000;
startWrite();
writeCommand(0xD9); // woo sekret command?
spiWrite(0x10 + index);
writeCommand(command);
uint8_t r = spiRead();
endWrite();
_freq = freq;
return r;
}
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