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ILI9341_t3.cpp
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// https://github.com/PaulStoffregen/ILI9341_t3
// http://forum.pjrc.com/threads/26305-Highly-optimized-ILI9341-(320x240-TFT-color-display)-library
/***************************************************
This is our library for the Adafruit ILI9341 Breakout and Shield
----> http://www.adafruit.com/products/1651
Check out the links above for our tutorials and wiring diagrams
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!
Written by Limor Fried/Ladyada for Adafruit Industries.
MIT license, all text above must be included in any redistribution
****************************************************/
// <SoftEgg>
//Additional graphics routines by Tim Trzepacz, SoftEgg LLC added December 2015
//(And then accidentally deleted and rewritten March 2016. Oops!)
//Gradient support
//----------------
// fillRectVGradient - fills area with vertical gradient
// fillRectHGradient - fills area with horizontal gradient
// fillScreenVGradient - fills screen with vertical gradient
// fillScreenHGradient - fills screen with horizontal gradient
//Additional Color Support
//------------------------
// color565toRGB - converts 565 format 16 bit color to RGB
// color565toRGB14 - converts 16 bit 565 format color to 14 bit RGB (2 bits clear for math and sign)
// RGB14tocolor565 - converts 14 bit RGB back to 16 bit 565 format color
//Low Memory Bitmap Support
//-------------------------
// writeRect8BPP - write 8 bit per pixel paletted bitmap
// writeRect4BPP - write 4 bit per pixel paletted bitmap
// writeRect2BPP - write 2 bit per pixel paletted bitmap
// writeRect1BPP - write 1 bit per pixel paletted bitmap
//TODO: transparent bitmap writing routines for sprites
//String Pixel Length support
//---------------------------
// strPixelLen - gets pixel length of given ASCII string
// <\SoftEgg>
#include "ILI9341_t3.h"
#include <SPI.h>
#ifndef swap
#define swap(a, b) { typeof(a) t = a; a = b; b = t; }
#endif
// Teensy 3.1 can only generate 30 MHz SPI when running at 120 MHz (overclock)
// At all other speeds, SPI.beginTransaction() will use the fastest available clock
#define WIDTH ILI9341_TFTWIDTH
#define HEIGHT ILI9341_TFTHEIGHT
// Constructor when using hardware SPI. Faster, but must use SPI pins
// specific to each board type (e.g. 11,13 for Uno, 51,52 for Mega, etc.)
ILI9341_t3::ILI9341_t3(uint8_t cs, uint8_t dc, uint8_t rst, uint8_t mosi, uint8_t sclk, uint8_t miso)
{
_cs = cs;
_dc = dc;
_rst = rst;
_mosi = mosi;
_sclk = sclk;
_miso = miso;
_width = WIDTH;
_height = HEIGHT;
rotation = 0;
cursor_y = cursor_x = 0;
textsize = 1;
textcolor = textbgcolor = 0xFFFF;
wrap = true;
font = NULL;
// Added to see how much impact actually using non hardware CS pin might be
_cspinmask = 0;
_csport = NULL;
}
void ILI9341_t3::setAddrWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1)
{
beginSPITransaction(_clock);
setAddr(x0, y0, x1, y1);
writecommand_last(ILI9341_RAMWR); // write to RAM
endSPITransaction();
}
void ILI9341_t3::pushColor(uint16_t color)
{
beginSPITransaction(_clock);
writedata16_last(color);
endSPITransaction();
}
void ILI9341_t3::drawPixel(int16_t x, int16_t y, uint16_t color) {
if((x < 0) ||(x >= _width) || (y < 0) || (y >= _height)) return;
beginSPITransaction(_clock);
setAddr(x, y, x, y);
writecommand_cont(ILI9341_RAMWR);
writedata16_last(color);
endSPITransaction();
}
void ILI9341_t3::drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color)
{
// Rudimentary clipping
if((x >= _width) || (x < 0) || (y >= _height)) return;
if(y < 0) { h += y; y = 0; }
if((y+h-1) >= _height) h = _height-y;
beginSPITransaction(_clock);
setAddr(x, y, x, y+h-1);
writecommand_cont(ILI9341_RAMWR);
while (h-- > 1) {
writedata16_cont(color);
}
writedata16_last(color);
endSPITransaction();
}
void ILI9341_t3::drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color)
{
// Rudimentary clipping
if((x >= _width) || (y >= _height) || (y < 0)) return;
if(x < 0) { w += x; x = 0; }
if((x+w-1) >= _width) w = _width-x;
beginSPITransaction(_clock);
setAddr(x, y, x+w-1, y);
writecommand_cont(ILI9341_RAMWR);
while (w-- > 1) {
writedata16_cont(color);
}
writedata16_last(color);
endSPITransaction();
}
void ILI9341_t3::fillScreen(uint16_t color)
{
fillRect(0, 0, _width, _height, color);
}
// fill a rectangle
void ILI9341_t3::fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color)
{
// rudimentary clipping (drawChar w/big text requires this)
if((x >= _width) || (y >= _height)) return;
if(x < 0) { w += x; x = 0; }
if(y < 0) { h += y; y = 0; }
if((x + w - 1) >= _width) w = _width - x;
if((y + h - 1) >= _height) h = _height - y;
// TODO: this can result in a very long transaction time
// should break this into multiple transactions, even though
// it'll cost more overhead, so we don't stall other SPI libs
beginSPITransaction(_clock);
setAddr(x, y, x+w-1, y+h-1);
writecommand_cont(ILI9341_RAMWR);
for(y=h; y>0; y--) {
for(x=w; x>1; x--) {
writedata16_cont(color);
}
writedata16_last(color);
if (y > 1 && (y & 1)) {
endSPITransaction();
beginSPITransaction(_clock);
}
}
endSPITransaction();
}
// fillRectVGradient - fills area with vertical gradient
void ILI9341_t3::fillRectVGradient(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color1, uint16_t color2)
{
// rudimentary clipping (drawChar w/big text requires this)
if((x >= _width) || (y >= _height)) return;
if((x + w - 1) >= _width) w = _width - x;
if((y + h - 1) >= _height) h = _height - y;
int16_t r1, g1, b1, r2, g2, b2, dr, dg, db, r, g, b;
color565toRGB14(color1,r1,g1,b1);
color565toRGB14(color2,r2,g2,b2);
dr=(r2-r1)/h; dg=(g2-g1)/h; db=(b2-b1)/h;
r=r1;g=g1;b=b1;
// TODO: this can result in a very long transaction time
// should break this into multiple transactions, even though
// it'll cost more overhead, so we don't stall other SPI libs
beginSPITransaction(_clock);
setAddr(x, y, x+w-1, y+h-1);
writecommand_cont(ILI9341_RAMWR);
for(y=h; y>0; y--) {
uint16_t color = RGB14tocolor565(r,g,b);
for(x=w; x>1; x--) {
writedata16_cont(color);
}
writedata16_last(color);
if (y > 1 && (y & 1)) {
endSPITransaction();
beginSPITransaction(_clock);
}
r+=dr;g+=dg; b+=db;
}
endSPITransaction();
}
// fillRectHGradient - fills area with horizontal gradient
void ILI9341_t3::fillRectHGradient(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color1, uint16_t color2)
{
// rudimentary clipping (drawChar w/big text requires this)
if((x >= _width) || (y >= _height)) return;
if((x + w - 1) >= _width) w = _width - x;
if((y + h - 1) >= _height) h = _height - y;
int16_t r1, g1, b1, r2, g2, b2, dr, dg, db, r, g, b;
color565toRGB14(color1,r1,g1,b1);
color565toRGB14(color2,r2,g2,b2);
dr=(r2-r1)/h; dg=(g2-g1)/h; db=(b2-b1)/h;
r=r1;g=g1;b=b1;
// TODO: this can result in a very long transaction time
// should break this into multiple transactions, even though
// it'll cost more overhead, so we don't stall other SPI libs
beginSPITransaction(_clock);
setAddr(x, y, x+w-1, y+h-1);
writecommand_cont(ILI9341_RAMWR);
for(y=h; y>0; y--) {
uint16_t color;
for(x=w; x>1; x--) {
color = RGB14tocolor565(r,g,b);
writedata16_cont(color);
r+=dr;g+=dg; b+=db;
}
color = RGB14tocolor565(r,g,b);
writedata16_last(color);
if (y > 1 && (y & 1)) {
endSPITransaction();
beginSPITransaction(_clock);
}
r=r1;g=g1;b=b1;
}
endSPITransaction();
}
// fillScreenVGradient - fills screen with vertical gradient
void ILI9341_t3::fillScreenVGradient(uint16_t color1, uint16_t color2)
{
fillRectVGradient(0,0,_width,_height,color1,color2);
}
// fillScreenHGradient - fills screen with horizontal gradient
void ILI9341_t3::fillScreenHGradient(uint16_t color1, uint16_t color2)
{
fillRectHGradient(0,0,_width,_height,color1,color2);
}
#define MADCTL_MY 0x80
#define MADCTL_MX 0x40
#define MADCTL_MV 0x20
#define MADCTL_ML 0x10
#define MADCTL_RGB 0x00
#define MADCTL_BGR 0x08
#define MADCTL_MH 0x04
void ILI9341_t3::setRotation(uint8_t m)
{
rotation = m % 4; // can't be higher than 3
beginSPITransaction(_clock);
writecommand_cont(ILI9341_MADCTL);
switch (rotation) {
case 0:
writedata8_last(MADCTL_MX | MADCTL_BGR);
_width = ILI9341_TFTWIDTH;
_height = ILI9341_TFTHEIGHT;
break;
case 1:
writedata8_last(MADCTL_MV | MADCTL_BGR);
_width = ILI9341_TFTHEIGHT;
_height = ILI9341_TFTWIDTH;
break;
case 2:
writedata8_last(MADCTL_MY | MADCTL_BGR);
_width = ILI9341_TFTWIDTH;
_height = ILI9341_TFTHEIGHT;
break;
case 3:
writedata8_last(MADCTL_MX | MADCTL_MY | MADCTL_MV | MADCTL_BGR);
_width = ILI9341_TFTHEIGHT;
_height = ILI9341_TFTWIDTH;
break;
}
endSPITransaction();
cursor_x = 0;
cursor_y = 0;
}
void ILI9341_t3::setScroll(uint16_t offset)
{
beginSPITransaction(_clock);
writecommand_cont(ILI9341_VSCRSADD);
writedata16_last(offset);
endSPITransaction();
}
void ILI9341_t3::invertDisplay(boolean i)
{
beginSPITransaction(_clock);
writecommand_last(i ? ILI9341_INVON : ILI9341_INVOFF);
endSPITransaction();
}
/*
uint8_t ILI9341_t3::readdata(void)
{
uint8_t r;
// Try to work directly with SPI registers...
// First wait until output queue is empty
uint16_t wTimeout = 0xffff;
while (((KINETISK_SPI0.SR) & (15 << 12)) && (--wTimeout)) ; // wait until empty
// KINETISK_SPI0.MCR |= SPI_MCR_CLR_RXF; // discard any received data
// KINETISK_SPI0.SR = SPI_SR_TCF;
// Transfer a 0 out...
writedata8_cont(0);
// Now wait until completed.
wTimeout = 0xffff;
while (((KINETISK_SPI0.SR) & (15 << 12)) && (--wTimeout)) ; // wait until empty
r = KINETISK_SPI0.POPR; // get the received byte... should check for it first...
return r;
}
*/
uint8_t ILI9341_t3::readcommand8(uint8_t c, uint8_t index)
{
// Bail if not valid miso
if (_miso == 0xff) return 0;
#ifdef KINETISK
uint16_t wTimeout = 0xffff;
uint8_t r=0;
beginSPITransaction(_clock);
while (((KINETISK_SPI0.SR) & (15 << 12)) && (--wTimeout)) ; // wait until empty
// Make sure the last frame has been sent...
KINETISK_SPI0.SR = SPI_SR_TCF; // dlear it out;
wTimeout = 0xffff;
while (!((KINETISK_SPI0.SR) & SPI_SR_TCF) && (--wTimeout)) ; // wait until it says the last frame completed
// clear out any current received bytes
wTimeout = 0x10; // should not go more than 4...
while ((((KINETISK_SPI0.SR) >> 4) & 0xf) && (--wTimeout)) {
r = KINETISK_SPI0.POPR;
}
//writecommand(0xD9); // sekret command
KINETISK_SPI0.PUSHR = 0xD9 | (pcs_command << 16) | SPI_PUSHR_CTAS(0) | SPI_PUSHR_CONT;
// while (((KINETISK_SPI0.SR) & (15 << 12)) > (3 << 12)) ; // wait if FIFO full
// writedata(0x10 + index);
KINETISK_SPI0.PUSHR = (0x10 + index) | (pcs_data << 16) | SPI_PUSHR_CTAS(0);
// while (((KINETISK_SPI0.SR) & (15 << 12)) > (3 << 12)) ; // wait if FIFO full
// writecommand(c);
KINETISK_SPI0.PUSHR = c | (pcs_command << 16) | SPI_PUSHR_CTAS(0) | SPI_PUSHR_CONT;
// while (((KINETISK_SPI0.SR) & (15 << 12)) > (3 << 12)) ; // wait if FIFO full
// readdata
KINETISK_SPI0.PUSHR = 0 | (pcs_data << 16) | SPI_PUSHR_CTAS(0);
// while (((KINETISK_SPI0.SR) & (15 << 12)) > (3 << 12)) ; // wait if FIFO full
// Now wait until completed.
wTimeout = 0xffff;
while (((KINETISK_SPI0.SR) & (15 << 12)) && (--wTimeout)) ; // wait until empty
// Make sure the last frame has been sent...
KINETISK_SPI0.SR = SPI_SR_TCF; // dlear it out;
wTimeout = 0xffff;
while (!((KINETISK_SPI0.SR) & SPI_SR_TCF) && (--wTimeout)) ; // wait until it says the last frame completed
wTimeout = 0x10; // should not go more than 4...
// lets get all of the values on the FIFO
while ((((KINETISK_SPI0.SR) >> 4) & 0xf) && (--wTimeout)) {
r = KINETISK_SPI0.POPR;
}
endSPITransaction();
return r; // get the received byte... should check for it first...
#elif defined(__IMXRT1062__) // Teensy 4.x
uint8_t r=0;
//digitalWriteFast(2, HIGH); // oscilloscope trigger for testing
//delayMicroseconds(10);
//digitalWriteFast(2, LOW);
beginSPITransaction(ILI9341_SPICLOCK_READ);
if (_dcport) {
// DC pin is controlled by GPIO
DIRECT_WRITE_LOW(_dcport, _dcpinmask);
IMXRT_LPSPI4_S.SR = LPSPI_SR_TCF | LPSPI_SR_FCF | LPSPI_SR_WCF;
IMXRT_LPSPI4_S.TCR = LPSPI_TCR_FRAMESZ(7) | LPSPI_TCR_RXMSK | LPSPI_TCR_CONT;
IMXRT_LPSPI4_S.TDR = 0xD9;
while (!(IMXRT_LPSPI4_S.SR & LPSPI_SR_WCF)) ; // wait until word complete
DIRECT_WRITE_HIGH(_dcport, _dcpinmask);
IMXRT_LPSPI4_S.SR = LPSPI_SR_TCF | LPSPI_SR_FCF | LPSPI_SR_WCF;
IMXRT_LPSPI4_S.TDR = 0x10 + index;
while (!(IMXRT_LPSPI4_S.SR & LPSPI_SR_WCF)) ; // wait until word complete
DIRECT_WRITE_LOW(_dcport, _dcpinmask);
IMXRT_LPSPI4_S.SR = LPSPI_SR_TCF | LPSPI_SR_FCF | LPSPI_SR_WCF;
IMXRT_LPSPI4_S.TDR = c;
while (!(IMXRT_LPSPI4_S.SR & LPSPI_SR_WCF)) ; // wait until word complete
DIRECT_WRITE_HIGH(_dcport, _dcpinmask);
IMXRT_LPSPI4_S.SR = LPSPI_SR_TCF | LPSPI_SR_FCF | LPSPI_SR_WCF;
IMXRT_LPSPI4_S.TCR = LPSPI_TCR_FRAMESZ(7);
IMXRT_LPSPI4_S.TDR = 0x10 + index;
while (!(IMXRT_LPSPI4_S.SR & LPSPI_SR_WCF)) ; // wait until word complete
while (((IMXRT_LPSPI4_S.FSR >> 16) & 0x1F) == 0) ; // wait until rx fifo not empty
r = IMXRT_LPSPI4_S.RDR;
} else {
// DC pin is controlled by SPI CS hardware
}
endSPITransaction();
return r; // get the received byte... should check for it first...
#else
beginSPITransaction(_clock);
writecommand_cont(0xD9);
writedata8_cont(0x10 + index);
writecommand_cont(c);
writedata8_cont(0);
uint8_t r = waitTransmitCompleteReturnLast();
endSPITransaction();
return r;
#endif
}
uint16_t ILI9341_t3::readScanLine()
{
#ifdef KINETISK
return 0; // TODO...
#elif defined(__IMXRT1062__)
uint16_t line=0;
//digitalWriteFast(2, HIGH); // oscilloscope trigger for testing
//delayMicroseconds(10);
//digitalWriteFast(2, LOW);
beginSPITransaction(ILI9341_SPICLOCK_READ);
if (_dcport) {
// DC pin is controlled by GPIO
DIRECT_WRITE_LOW(_dcport, _dcpinmask);
IMXRT_LPSPI4_S.SR = LPSPI_SR_TCF | LPSPI_SR_FCF | LPSPI_SR_WCF;
IMXRT_LPSPI4_S.TCR = LPSPI_TCR_FRAMESZ(7) | LPSPI_TCR_RXMSK | LPSPI_TCR_CONT;
IMXRT_LPSPI4_S.TDR = 0x45;
while (!(IMXRT_LPSPI4_S.SR & LPSPI_SR_WCF)) ; // wait until word complete
DIRECT_WRITE_HIGH(_dcport, _dcpinmask);
IMXRT_LPSPI4_S.TDR = 0;
IMXRT_LPSPI4_S.TCR = LPSPI_TCR_FRAMESZ(15);
IMXRT_LPSPI4_S.TDR = 0;
while (!(IMXRT_LPSPI4_S.SR & LPSPI_SR_WCF)) ; // wait until word complete
while (((IMXRT_LPSPI4_S.FSR >> 16) & 0x1F) == 0) ; // wait until rx fifo not empty
line = IMXRT_LPSPI4_S.RDR >> 7;
//if (IMXRT_LPSPI4_S.FSR != 0) Serial.println("ERROR: junk remains in FIFO!!!");
} else {
// DC pin is controlled by SPI CS hardware
// TODO...
}
endSPITransaction();
return line;
#else
return 0;
#endif
}
// Read Pixel at x,y and get back 16-bit packed color
uint16_t ILI9341_t3::readPixel(int16_t x, int16_t y)
{
if (_miso == 0xff) return 0xffff; // bail if not valid miso
#ifdef KINETISK
uint8_t dummy __attribute__((unused));
uint8_t r,g,b;
beginSPITransaction(ILI9341_SPICLOCK_READ);
setAddr(x, y, x, y);
writecommand_cont(ILI9341_RAMRD); // read from RAM
waitTransmitComplete();
// Push 4 bytes over SPI
KINETISK_SPI0.PUSHR = 0 | (pcs_data << 16) | SPI_PUSHR_CTAS(0)| SPI_PUSHR_CONT;
waitFifoEmpty(); // wait for both queues to be empty.
KINETISK_SPI0.PUSHR = 0 | (pcs_data << 16) | SPI_PUSHR_CTAS(0)| SPI_PUSHR_CONT;
KINETISK_SPI0.PUSHR = 0 | (pcs_data << 16) | SPI_PUSHR_CTAS(0)| SPI_PUSHR_CONT;
KINETISK_SPI0.PUSHR = 0 | (pcs_data << 16) | SPI_PUSHR_CTAS(0)| SPI_PUSHR_EOQ;
// Wait for End of Queue
while ((KINETISK_SPI0.SR & SPI_SR_EOQF) == 0) ;
KINETISK_SPI0.SR = SPI_SR_EOQF; // make sure it is clear
// Read Pixel Data
dummy = KINETISK_SPI0.POPR; // Read a DUMMY byte of GRAM
r = KINETISK_SPI0.POPR; // Read a RED byte of GRAM
g = KINETISK_SPI0.POPR; // Read a GREEN byte of GRAM
b = KINETISK_SPI0.POPR; // Read a BLUE byte of GRAM
endSPITransaction();
return color565(r,g,b);
#else
// Kinetisk
uint16_t colors = 0;
readRect(x, y, 1, 1, &colors);
return colors;
#endif
}
// Now lets see if we can read in multiple pixels
#ifdef KINETISK
void ILI9341_t3::readRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t *pcolors)
{
if (_miso == 0xff) return; // bail if not valid miso
uint8_t dummy __attribute__((unused));
uint8_t r,g,b;
uint16_t c = w * h;
beginSPITransaction(ILI9341_SPICLOCK_READ);
setAddr(x, y, x+w-1, y+h-1);
writecommand_cont(ILI9341_RAMRD); // read from RAM
waitTransmitComplete();
KINETISK_SPI0.PUSHR = 0 | (pcs_data << 16) | SPI_PUSHR_CTAS(0)| SPI_PUSHR_CONT | SPI_PUSHR_EOQ;
while ((KINETISK_SPI0.SR & SPI_SR_EOQF) == 0) ;
KINETISK_SPI0.SR = SPI_SR_EOQF; // make sure it is clear
while ((KINETISK_SPI0.SR & 0xf0)) {
dummy = KINETISK_SPI0.POPR; // Read a DUMMY byte but only once
}
c *= 3; // number of bytes we will transmit to the display
while (c--) {
if (c) {
KINETISK_SPI0.PUSHR = 0 | (pcs_data << 16) | SPI_PUSHR_CTAS(0)| SPI_PUSHR_CONT;
} else {
KINETISK_SPI0.PUSHR = 0 | (pcs_data << 16) | SPI_PUSHR_CTAS(0)| SPI_PUSHR_EOQ;
}
// If last byte wait until all have come in...
if (c == 0) {
while ((KINETISK_SPI0.SR & SPI_SR_EOQF) == 0) ;
KINETISK_SPI0.SR = SPI_SR_EOQF; // make sure it is clear
}
if ((KINETISK_SPI0.SR & 0xf0) >= 0x30) { // do we have at least 3 bytes in queue if so extract...
r = KINETISK_SPI0.POPR; // Read a RED byte of GRAM
g = KINETISK_SPI0.POPR; // Read a GREEN byte of GRAM
b = KINETISK_SPI0.POPR; // Read a BLUE byte of GRAM
*pcolors++ = color565(r,g,b);
}
// like waitFiroNotFull but does not pop our return queue
while ((KINETISK_SPI0.SR & (15 << 12)) > (3 << 12)) ;
}
endSPITransaction();
}
#elif defined(__IMXRT1052__) || defined(__IMXRT1062__) // Teensy 4.x
void ILI9341_t3::readRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t *pcolors)
{
if (_miso == 0xff) return; // bail if not valid miso
uint8_t rgb[3]; // RGB bytes received from the display
uint8_t rgbIdx = 0;
uint32_t txCount = w * h * 3; // number of bytes we will transmit to the display
uint32_t rxCount = txCount; // number of bytes we will receive back from the display
beginSPITransaction(ILI9341_SPICLOCK_READ);
setAddr(x, y, x+w-1, y+h-1);
writecommand_cont(ILI9341_RAMRD); // read from RAM
// transmit a DUMMY byte before the color bytes
writedata8_last(0); // BUGBUG:: maybe fix this as this will wait until the byte fully transfers through.
while (txCount || rxCount) {
// transmit another byte if possible
if (txCount && (IMXRT_LPSPI4_S.SR & LPSPI_SR_TDF)) {
txCount--;
if (txCount) {
IMXRT_LPSPI4_S.TDR = 0;
} else {
maybeUpdateTCR(_tcr_dc_not_assert | LPSPI_TCR_FRAMESZ(7)); // remove the CONTINUE...
while ((IMXRT_LPSPI4_S.SR & LPSPI_SR_TDF) == 0) ; // wait if queue was full
IMXRT_LPSPI4_S.TDR = 0;
}
}
// receive another byte if possible, and either skip it or store the color
if (rxCount && !(IMXRT_LPSPI4_S.RSR & LPSPI_RSR_RXEMPTY)) {
rgb[rgbIdx] = IMXRT_LPSPI4_S.RDR;
rxCount--;
rgbIdx++;
if (rgbIdx == 3) {
rgbIdx = 0;
*pcolors++ = color565(rgb[0], rgb[1], rgb[2]);
}
}
}
// We should have received everything so should be done
endSPITransaction();
}
#endif
// Now lets see if we can writemultiple pixels
void ILI9341_t3::writeRect(int16_t x, int16_t y, int16_t w, int16_t h, const uint16_t *pcolors)
{
beginSPITransaction(_clock);
setAddr(x, y, x+w-1, y+h-1);
writecommand_cont(ILI9341_RAMWR);
for(y=h; y>0; y--) {
for(x=w; x>1; x--) {
writedata16_cont(*pcolors++);
}
writedata16_last(*pcolors++);
}
endSPITransaction();
}
// writeRect8BPP - write 8 bit per pixel paletted bitmap
// bitmap data in array at pixels, one byte per pixel
// color palette data in array at palette
void ILI9341_t3::writeRect8BPP(int16_t x, int16_t y, int16_t w, int16_t h, const uint8_t *pixels, const uint16_t * palette )
{
beginSPITransaction(_clock);
setAddr(x, y, x+w-1, y+h-1);
writecommand_cont(ILI9341_RAMWR);
for(y=h; y>0; y--) {
for(x=w; x>1; x--) {
writedata16_cont(palette[*pixels++]);
}
writedata16_last(palette[*pixels++]);
}
endSPITransaction();
}
// writeRect4BPP - write 4 bit per pixel paletted bitmap
// bitmap data in array at pixels, 4 bits per pixel
// color palette data in array at palette
// width must be at least 2 pixels
void ILI9341_t3::writeRect4BPP(int16_t x, int16_t y, int16_t w, int16_t h, const uint8_t *pixels, const uint16_t * palette )
{
beginSPITransaction(_clock);
setAddr(x, y, x+w-1, y+h-1);
writecommand_cont(ILI9341_RAMWR);
for(y=h; y>0; y--) {
for(x=w; x>2; x-=2) {
writedata16_cont(palette[((*pixels)>>4)&0xF]);
writedata16_cont(palette[(*pixels++)&0xF]);
}
writedata16_cont(palette[((*pixels)>>4)&0xF]);
writedata16_last(palette[(*pixels++)&0xF]);
}
endSPITransaction();
}
// writeRect2BPP - write 2 bit per pixel paletted bitmap
// bitmap data in array at pixels, 4 bits per pixel
// color palette data in array at palette
// width must be at least 4 pixels
void ILI9341_t3::writeRect2BPP(int16_t x, int16_t y, int16_t w, int16_t h, const uint8_t *pixels, const uint16_t * palette )
{
beginSPITransaction(_clock);
setAddr(x, y, x+w-1, y+h-1);
writecommand_cont(ILI9341_RAMWR);
for(y=h; y>0; y--) {
for(x=w; x>4; x-=4) {
//unrolled loop might be faster?
writedata16_cont(palette[((*pixels)>>6)&0x3]);
writedata16_cont(palette[((*pixels)>>4)&0x3]);
writedata16_cont(palette[((*pixels)>>2)&0x3]);
writedata16_cont(palette[(*pixels++)&0x3]);
}
writedata16_cont(palette[((*pixels)>>6)&0x3]);
writedata16_cont(palette[((*pixels)>>4)&0x3]);
writedata16_cont(palette[((*pixels)>>2)&0x3]);
writedata16_last(palette[(*pixels++)&0x3]);
}
endSPITransaction();
}
// writeRect1BPP - write 1 bit per pixel paletted bitmap
// bitmap data in array at pixels, 4 bits per pixel
// color palette data in array at palette
// width must be at least 8 pixels
void ILI9341_t3::writeRect1BPP(int16_t x, int16_t y, int16_t w, int16_t h, const uint8_t *pixels, const uint16_t * palette )
{
beginSPITransaction(_clock);
setAddr(x, y, x+w-1, y+h-1);
writecommand_cont(ILI9341_RAMWR);
for(y=h; y>0; y--) {
for(x=w; x>8; x-=8) {
//unrolled loop might be faster?
writedata16_cont(palette[((*pixels)>>7)&0x1]);
writedata16_cont(palette[((*pixels)>>6)&0x1]);
writedata16_cont(palette[((*pixels)>>5)&0x1]);
writedata16_cont(palette[((*pixels)>>4)&0x1]);
writedata16_cont(palette[((*pixels)>>3)&0x1]);
writedata16_cont(palette[((*pixels)>>2)&0x1]);
writedata16_cont(palette[((*pixels)>>1)&0x1]);
writedata16_cont(palette[(*pixels++)&0x1]);
}
writedata16_cont(palette[((*pixels)>>7)&0x1]);
writedata16_cont(palette[((*pixels)>>6)&0x1]);
writedata16_cont(palette[((*pixels)>>5)&0x1]);
writedata16_cont(palette[((*pixels)>>4)&0x1]);
writedata16_cont(palette[((*pixels)>>3)&0x1]);
writedata16_cont(palette[((*pixels)>>2)&0x1]);
writedata16_cont(palette[((*pixels)>>1)&0x1]);
writedata16_last(palette[(*pixels++)&0x1]);
}
endSPITransaction();
}
static const uint8_t init_commands[] = {
4, 0xEF, 0x03, 0x80, 0x02,
4, 0xCF, 0x00, 0XC1, 0X30,
5, 0xED, 0x64, 0x03, 0X12, 0X81,
4, 0xE8, 0x85, 0x00, 0x78,
6, 0xCB, 0x39, 0x2C, 0x00, 0x34, 0x02,
2, 0xF7, 0x20,
3, 0xEA, 0x00, 0x00,
2, ILI9341_PWCTR1, 0x23, // Power control
2, ILI9341_PWCTR2, 0x10, // Power control
3, ILI9341_VMCTR1, 0x3e, 0x28, // VCM control
2, ILI9341_VMCTR2, 0x86, // VCM control2
2, ILI9341_MADCTL, 0x48, // Memory Access Control
2, ILI9341_PIXFMT, 0x55,
3, ILI9341_FRMCTR1, 0x00, 0x18,
4, ILI9341_DFUNCTR, 0x08, 0x82, 0x27, // Display Function Control
2, 0xF2, 0x00, // Gamma Function Disable
2, ILI9341_GAMMASET, 0x01, // Gamma curve selected
16, ILI9341_GMCTRP1, 0x0F, 0x31, 0x2B, 0x0C, 0x0E, 0x08,
0x4E, 0xF1, 0x37, 0x07, 0x10, 0x03, 0x0E, 0x09, 0x00, // Set Gamma
16, ILI9341_GMCTRN1, 0x00, 0x0E, 0x14, 0x03, 0x11, 0x07,
0x31, 0xC1, 0x48, 0x08, 0x0F, 0x0C, 0x31, 0x36, 0x0F, // Set Gamma
3, 0xb1, 0x00, 0x10, // FrameRate Control 119Hz
0
};
void ILI9341_t3::begin(void)
{
// verify SPI pins are valid;
#ifdef KINETISK
#if defined(__MK64FX512__) || defined(__MK66FX1M0__)
// Allow to work with mimimum of MOSI and SCK
if ((_mosi == 255 || _mosi == 11 || _mosi == 7 || _mosi == 28) && (_sclk == 255 || _sclk == 13 || _sclk == 14 || _sclk == 27))
#else
if ((_mosi == 255 || _mosi == 11 || _mosi == 7) && (_sclk == 255 || _sclk == 13 || _sclk == 14))
#endif
{
if (_mosi != 255) SPI.setMOSI(_mosi);
if (_sclk != 255) SPI.setSCK(_sclk);
// Now see if valid MISO
#if defined(__MK64FX512__) || defined(__MK66FX1M0__)
if (_miso == 12 || _miso == 8 || _miso == 39)
#else
if (_miso == 12 || _miso == 8)
#endif
{
SPI.setMISO(_miso);
} else {
_miso = 0xff; // set miso to 255 as flag it is bad
}
} else {
return; // not valid pins...
}
SPI.begin();
if (SPI.pinIsChipSelect(_cs, _dc)) {
pcs_data = SPI.setCS(_cs);
pcs_command = pcs_data | SPI.setCS(_dc);
} else {
// See if at least DC is on chipselect pin, if so try to limp along...
if (SPI.pinIsChipSelect(_dc)) {
pcs_data = 0;
pcs_command = pcs_data | SPI.setCS(_dc);
pinMode(_cs, OUTPUT);
_csport = portOutputRegister(digitalPinToPort(_cs));
_cspinmask = digitalPinToBitMask(_cs);
} else {
pcs_data = 0;
}
}
#elif defined(__IMXRT1052__) || defined(__IMXRT1062__) // Teensy 4.x
_pending_rx_count = 0;
SPI.begin();
_csport = portOutputRegister(_cs);
_cspinmask = digitalPinToBitMask(_cs);
pinMode(_cs, OUTPUT);
DIRECT_WRITE_HIGH(_csport, _cspinmask);
_spi_tcr_current = IMXRT_LPSPI4_S.TCR; // get the current TCR value
// TODO: Need to setup DC to actually work.
if (SPI.pinIsChipSelect(_dc)) {
uint8_t dc_cs_index = SPI.setCS(_dc);
_dcport = 0;
_dcpinmask = 0;
dc_cs_index--; // convert to 0 based
_tcr_dc_assert = LPSPI_TCR_PCS(dc_cs_index);
_tcr_dc_not_assert = LPSPI_TCR_PCS(3);
} else {
//Serial.println("ILI9341_t3n: Error not DC is not valid hardware CS pin");
_dcport = portOutputRegister(_dc);
_dcpinmask = digitalPinToBitMask(_dc);
pinMode(_dc, OUTPUT);
DIRECT_WRITE_HIGH(_dcport, _dcpinmask);
_tcr_dc_assert = LPSPI_TCR_PCS(0);
_tcr_dc_not_assert = LPSPI_TCR_PCS(1);
}
maybeUpdateTCR(_tcr_dc_not_assert | LPSPI_TCR_FRAMESZ(7));
#endif
// toggle RST low to reset
if (_rst < 255) {
pinMode(_rst, OUTPUT);
digitalWrite(_rst, HIGH);
delay(5);
digitalWrite(_rst, LOW);
delay(20);
digitalWrite(_rst, HIGH);
delay(150);
}
/*
uint8_t x = readcommand8(ILI9341_RDMODE);
Serial.print("\nDisplay Power Mode: 0x"); Serial.println(x, HEX);
x = readcommand8(ILI9341_RDMADCTL);
Serial.print("\nMADCTL Mode: 0x"); Serial.println(x, HEX);
x = readcommand8(ILI9341_RDPIXFMT);
Serial.print("\nPixel Format: 0x"); Serial.println(x, HEX);
x = readcommand8(ILI9341_RDIMGFMT);
Serial.print("\nImage Format: 0x"); Serial.println(x, HEX);
x = readcommand8(ILI9341_RDSELFDIAG);
Serial.print("\nSelf Diagnostic: 0x"); Serial.println(x, HEX);
*/
beginSPITransaction(_clock);
const uint8_t *addr = init_commands;
while (1) {
uint8_t count = *addr++;
if (count-- == 0) break;
writecommand_cont(*addr++);
while (count-- > 0) {
writedata8_cont(*addr++);
}
}
writecommand_last(ILI9341_SLPOUT); // Exit Sleep
endSPITransaction();
delay(120);
beginSPITransaction(_clock);
writecommand_last(ILI9341_DISPON); // Display on
endSPITransaction();
}
/*
This is the core graphics library for all our displays, providing a common
set of graphics primitives (points, lines, circles, etc.). It needs to be
paired with a hardware-specific library for each display device we carry
(to handle the lower-level functions).
Adafruit invests time and resources providing this open source code, please
support Adafruit & open-source hardware by purchasing products from Adafruit!
Copyright (c) 2013 Adafruit Industries. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
//#include "glcdfont.c"
extern "C" const unsigned char glcdfont[];
// Draw a circle outline
void ILI9341_t3::drawCircle(int16_t x0, int16_t y0, int16_t r,
uint16_t color) {
int16_t f = 1 - r;
int16_t ddF_x = 1;
int16_t ddF_y = -2 * r;
int16_t x = 0;
int16_t y = r;
drawPixel(x0 , y0+r, color);
drawPixel(x0 , y0-r, color);
drawPixel(x0+r, y0 , color);
drawPixel(x0-r, y0 , color);
while (x<y) {
if (f >= 0) {
y--;
ddF_y += 2;
f += ddF_y;
}
x++;
ddF_x += 2;
f += ddF_x;
drawPixel(x0 + x, y0 + y, color);
drawPixel(x0 - x, y0 + y, color);
drawPixel(x0 + x, y0 - y, color);
drawPixel(x0 - x, y0 - y, color);
drawPixel(x0 + y, y0 + x, color);
drawPixel(x0 - y, y0 + x, color);
drawPixel(x0 + y, y0 - x, color);
drawPixel(x0 - y, y0 - x, color);
}
}
void ILI9341_t3::drawCircleHelper( int16_t x0, int16_t y0,
int16_t r, uint8_t cornername, uint16_t color) {
int16_t f = 1 - r;
int16_t ddF_x = 1;
int16_t ddF_y = -2 * r;
int16_t x = 0;
int16_t y = r;
int xold;
xold = x;
while (x<y) {
if (f >= 0) {
y--;
ddF_y += 2;
f += ddF_y;
}
x++;
ddF_x += 2;
f += ddF_x;
if (f >= 0 || x == y) { // time to draw the new line segment
if (cornername & 0x4) {
drawFastHLine(x0 + xold+1, y0 + y, x-xold, color);
drawFastVLine(x0 + y, y0 + xold+1, x-xold, color);
}
if (cornername & 0x2) {