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@ladyada @PaintYourDragon @driverblock @tdicola @makermelissa
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// IMPORTANT: LIBRARY MUST BE SPECIFICALLY CONFIGURED FOR EITHER TFT SHIELD
// OR BREAKOUT BOARD USAGE. SEE RELEVANT COMMENTS IN Adafruit_TFTLCD.h
// Graphics library by ladyada/adafruit with init code from Rossum
// MIT license
#if defined(__SAM3X8E__)
#include <include/pio.h>
#define PROGMEM
#define pgm_read_byte(addr) (*(const unsigned char *)(addr))
#define pgm_read_word(addr) (*(const unsigned short *)(addr))
#endif
#ifdef __AVR__
#include <avr/pgmspace.h>
#endif
#include "Adafruit_TFTLCD.h"
#include "pin_magic.h"
#include "pins_arduino.h"
#include "wiring_private.h"
//#define TFTWIDTH 320
//#define TFTHEIGHT 480
#define TFTWIDTH 240
#define TFTHEIGHT 320
// LCD controller chip identifiers
#define ID_932X 0
#define ID_7575 1
#define ID_9341 2
#define ID_HX8357D 3
#define ID_UNKNOWN 0xFF
#include "registers.h"
// Constructor for breakout board (configurable LCD control lines).
// Can still use this w/shield, but parameters are ignored.
Adafruit_TFTLCD::Adafruit_TFTLCD(uint8_t cs, uint8_t cd, uint8_t wr, uint8_t rd,
uint8_t reset)
: Adafruit_GFX(TFTWIDTH, TFTHEIGHT) {
#ifndef USE_ADAFRUIT_SHIELD_PINOUT
// Convert pin numbers to registers and bitmasks
_reset = reset;
#ifdef __AVR__
csPort = portOutputRegister(digitalPinToPort(cs));
cdPort = portOutputRegister(digitalPinToPort(cd));
wrPort = portOutputRegister(digitalPinToPort(wr));
rdPort = portOutputRegister(digitalPinToPort(rd));
#endif
#if defined(__SAM3X8E__)
csPort = digitalPinToPort(cs);
cdPort = digitalPinToPort(cd);
wrPort = digitalPinToPort(wr);
rdPort = digitalPinToPort(rd);
#endif
csPinSet = digitalPinToBitMask(cs);
cdPinSet = digitalPinToBitMask(cd);
wrPinSet = digitalPinToBitMask(wr);
rdPinSet = digitalPinToBitMask(rd);
csPinUnset = ~csPinSet;
cdPinUnset = ~cdPinSet;
wrPinUnset = ~wrPinSet;
rdPinUnset = ~rdPinSet;
#ifdef __AVR__
*csPort |= csPinSet; // Set all control bits to HIGH (idle)
*cdPort |= cdPinSet; // Signals are ACTIVE LOW
*wrPort |= wrPinSet;
*rdPort |= rdPinSet;
#endif
#if defined(__SAM3X8E__)
csPort->PIO_SODR |= csPinSet; // Set all control bits to HIGH (idle)
cdPort->PIO_SODR |= cdPinSet; // Signals are ACTIVE LOW
wrPort->PIO_SODR |= wrPinSet;
rdPort->PIO_SODR |= rdPinSet;
#endif
pinMode(cs, OUTPUT); // Enable outputs
pinMode(cd, OUTPUT);
pinMode(wr, OUTPUT);
pinMode(rd, OUTPUT);
if (reset) {
digitalWrite(reset, HIGH);
pinMode(reset, OUTPUT);
}
#endif
init();
}
// Constructor for shield (fixed LCD control lines)
Adafruit_TFTLCD::Adafruit_TFTLCD(void) : Adafruit_GFX(TFTWIDTH, TFTHEIGHT) {
init();
}
// Initialization common to both shield & breakout configs
void Adafruit_TFTLCD::init(void) {
#ifdef USE_ADAFRUIT_SHIELD_PINOUT
CS_IDLE; // Set all control bits to idle state
WR_IDLE;
RD_IDLE;
CD_DATA;
digitalWrite(5, HIGH); // Reset line
pinMode(A3, OUTPUT); // Enable outputs
pinMode(A2, OUTPUT);
pinMode(A1, OUTPUT);
pinMode(A0, OUTPUT);
pinMode(5, OUTPUT);
#endif
setWriteDir(); // Set up LCD data port(s) for WRITE operations
rotation = 0;
cursor_y = cursor_x = 0;
textcolor = 0xFFFF;
_width = TFTWIDTH;
_height = TFTHEIGHT;
}
// Initialization command tables for different LCD controllers
#define TFTLCD_DELAY 0xFF
static const uint8_t HX8347G_regValues[] PROGMEM = {
0x2E, 0x89, 0x29, 0x8F, 0x2B, 0x02, 0xE2, 0x00, 0xE4, 0x01, 0xE5, 0x10,
0xE6, 0x01, 0xE7, 0x10, 0xE8, 0x70, 0xF2, 0x00, 0xEA, 0x00, 0xEB, 0x20,
0xEC, 0x3C, 0xED, 0xC8, 0xE9, 0x38, 0xF1, 0x01,
// skip gamma, do later
0x1B, 0x1A, 0x1A, 0x02, 0x24, 0x61, 0x25, 0x5C,
0x18, 0x36, 0x19, 0x01, 0x1F, 0x88, TFTLCD_DELAY, 5, // delay 5 ms
0x1F, 0x80, TFTLCD_DELAY, 5, 0x1F, 0x90, TFTLCD_DELAY, 5, 0x1F, 0xD4,
TFTLCD_DELAY, 5, 0x17, 0x05,
0x36, 0x09, 0x28, 0x38, TFTLCD_DELAY, 40, 0x28, 0x3C,
0x02, 0x00, 0x03, 0x00, 0x04, 0x00, 0x05, 0xEF, 0x06, 0x00, 0x07, 0x00,
0x08, 0x01, 0x09, 0x3F};
static const uint8_t HX8357D_regValues[] PROGMEM = {
HX8357_SWRESET,
0,
HX8357D_SETC,
3,
0xFF,
0x83,
0x57,
TFTLCD_DELAY,
250,
HX8357_SETRGB,
4,
0x00,
0x00,
0x06,
0x06,
HX8357D_SETCOM,
1,
0x25, // -1.52V
HX8357_SETOSC,
1,
0x68, // Normal mode 70Hz, Idle mode 55 Hz
HX8357_SETPANEL,
1,
0x05, // BGR, Gate direction swapped
HX8357_SETPWR1,
6,
0x00,
0x15,
0x1C,
0x1C,
0x83,
0xAA,
HX8357D_SETSTBA,
6,
0x50,
0x50,
0x01,
0x3C,
0x1E,
0x08,
// MEME GAMMA HERE
HX8357D_SETCYC,
7,
0x02,
0x40,
0x00,
0x2A,
0x2A,
0x0D,
0x78,
HX8357_COLMOD,
1,
0x55,
HX8357_MADCTL,
1,
0xC0,
HX8357_TEON,
1,
0x00,
HX8357_TEARLINE,
2,
0x00,
0x02,
HX8357_SLPOUT,
0,
TFTLCD_DELAY,
150,
HX8357_DISPON,
0,
TFTLCD_DELAY,
50,
};
static const uint16_t ILI932x_regValues[] PROGMEM = {
ILI932X_START_OSC,
0x0001, // Start oscillator
TFTLCD_DELAY,
50, // 50 millisecond delay
ILI932X_DRIV_OUT_CTRL,
0x0100,
ILI932X_DRIV_WAV_CTRL,
0x0700,
ILI932X_ENTRY_MOD,
0x1030,
ILI932X_RESIZE_CTRL,
0x0000,
ILI932X_DISP_CTRL2,
0x0202,
ILI932X_DISP_CTRL3,
0x0000,
ILI932X_DISP_CTRL4,
0x0000,
ILI932X_RGB_DISP_IF_CTRL1,
0x0,
ILI932X_FRM_MARKER_POS,
0x0,
ILI932X_RGB_DISP_IF_CTRL2,
0x0,
ILI932X_POW_CTRL1,
0x0000,
ILI932X_POW_CTRL2,
0x0007,
ILI932X_POW_CTRL3,
0x0000,
ILI932X_POW_CTRL4,
0x0000,
TFTLCD_DELAY,
200,
ILI932X_POW_CTRL1,
0x1690,
ILI932X_POW_CTRL2,
0x0227,
TFTLCD_DELAY,
50,
ILI932X_POW_CTRL3,
0x001A,
TFTLCD_DELAY,
50,
ILI932X_POW_CTRL4,
0x1800,
ILI932X_POW_CTRL7,
0x002A,
TFTLCD_DELAY,
50,
ILI932X_GAMMA_CTRL1,
0x0000,
ILI932X_GAMMA_CTRL2,
0x0000,
ILI932X_GAMMA_CTRL3,
0x0000,
ILI932X_GAMMA_CTRL4,
0x0206,
ILI932X_GAMMA_CTRL5,
0x0808,
ILI932X_GAMMA_CTRL6,
0x0007,
ILI932X_GAMMA_CTRL7,
0x0201,
ILI932X_GAMMA_CTRL8,
0x0000,
ILI932X_GAMMA_CTRL9,
0x0000,
ILI932X_GAMMA_CTRL10,
0x0000,
ILI932X_GRAM_HOR_AD,
0x0000,
ILI932X_GRAM_VER_AD,
0x0000,
ILI932X_HOR_START_AD,
0x0000,
ILI932X_HOR_END_AD,
0x00EF,
ILI932X_VER_START_AD,
0X0000,
ILI932X_VER_END_AD,
0x013F,
ILI932X_GATE_SCAN_CTRL1,
0xA700, // Driver Output Control (R60h)
ILI932X_GATE_SCAN_CTRL2,
0x0003, // Driver Output Control (R61h)
ILI932X_GATE_SCAN_CTRL3,
0x0000, // Driver Output Control (R62h)
ILI932X_PANEL_IF_CTRL1,
0X0010, // Panel Interface Control 1 (R90h)
ILI932X_PANEL_IF_CTRL2,
0X0000,
ILI932X_PANEL_IF_CTRL3,
0X0003,
ILI932X_PANEL_IF_CTRL4,
0X1100,
ILI932X_PANEL_IF_CTRL5,
0X0000,
ILI932X_PANEL_IF_CTRL6,
0X0000,
ILI932X_DISP_CTRL1,
0x0133, // Main screen turn on
};
void Adafruit_TFTLCD::begin(uint16_t id) {
uint8_t i = 0;
reset();
delay(200);
if ((id == 0x9325) || (id == 0x9328)) {
uint16_t a, d;
driver = ID_932X;
CS_ACTIVE;
while (i < sizeof(ILI932x_regValues) / sizeof(uint16_t)) {
a = pgm_read_word(&ILI932x_regValues[i++]);
d = pgm_read_word(&ILI932x_regValues[i++]);
if (a == TFTLCD_DELAY)
delay(d);
else
writeRegister16(a, d);
}
setRotation(rotation);
setAddrWindow(0, 0, TFTWIDTH - 1, TFTHEIGHT - 1);
} else if (id == 0x9341) {
driver = ID_9341;
CS_ACTIVE;
writeRegister8(ILI9341_SOFTRESET, 0);
delay(50);
writeRegister8(ILI9341_DISPLAYOFF, 0);
writeRegister8(ILI9341_POWERCONTROL1, 0x23);
writeRegister8(ILI9341_POWERCONTROL2, 0x10);
writeRegister16(ILI9341_VCOMCONTROL1, 0x2B2B);
writeRegister8(ILI9341_VCOMCONTROL2, 0xC0);
writeRegister8(ILI9341_MEMCONTROL, ILI9341_MADCTL_MY | ILI9341_MADCTL_BGR);
writeRegister8(ILI9341_PIXELFORMAT, 0x55);
writeRegister16(ILI9341_FRAMECONTROL, 0x001B);
writeRegister8(ILI9341_ENTRYMODE, 0x07);
/* writeRegister32(ILI9341_DISPLAYFUNC, 0x0A822700);*/
writeRegister8(ILI9341_SLEEPOUT, 0);
delay(150);
writeRegister8(ILI9341_DISPLAYON, 0);
delay(500);
setAddrWindow(0, 0, TFTWIDTH - 1, TFTHEIGHT - 1);
return;
} else if (id == 0x8357) {
// HX8357D
driver = ID_HX8357D;
CS_ACTIVE;
while (i < sizeof(HX8357D_regValues)) {
uint8_t r = pgm_read_byte(&HX8357D_regValues[i++]);
uint8_t len = pgm_read_byte(&HX8357D_regValues[i++]);
if (r == TFTLCD_DELAY) {
delay(len);
} else {
// Serial.print("Register $"); Serial.print(r, HEX);
// Serial.print(" datalen "); Serial.println(len);
CS_ACTIVE;
CD_COMMAND;
write8(r);
CD_DATA;
for (uint8_t d = 0; d < len; d++) {
uint8_t x = pgm_read_byte(&HX8357D_regValues[i++]);
write8(x);
}
CS_IDLE;
}
}
return;
} else if (id == 0x7575) {
uint8_t a, d;
driver = ID_7575;
CS_ACTIVE;
while (i < sizeof(HX8347G_regValues)) {
a = pgm_read_byte(&HX8347G_regValues[i++]);
d = pgm_read_byte(&HX8347G_regValues[i++]);
if (a == TFTLCD_DELAY)
delay(d);
else
writeRegister8(a, d);
}
setRotation(rotation);
setLR(); // Lower-right corner of address window
} else {
driver = ID_UNKNOWN;
return;
}
}
void Adafruit_TFTLCD::reset(void) {
CS_IDLE;
// CD_DATA;
WR_IDLE;
RD_IDLE;
#ifdef USE_ADAFRUIT_SHIELD_PINOUT
digitalWrite(5, LOW);
delay(2);
digitalWrite(5, HIGH);
#else
if (_reset) {
digitalWrite(_reset, LOW);
delay(2);
digitalWrite(_reset, HIGH);
}
#endif
// Data transfer sync
CS_ACTIVE;
CD_COMMAND;
write8(0x00);
for (uint8_t i = 0; i < 3; i++)
WR_STROBE; // Three extra 0x00s
CS_IDLE;
}
// Sets the LCD address window (and address counter, on 932X).
// Relevant to rect/screen fills and H/V lines. Input coordinates are
// assumed pre-sorted (e.g. x2 >= x1).
void Adafruit_TFTLCD::setAddrWindow(int x1, int y1, int x2, int y2) {
CS_ACTIVE;
if (driver == ID_932X) {
// Values passed are in current (possibly rotated) coordinate
// system. 932X requires hardware-native coords regardless of
// MADCTL, so rotate inputs as needed. The address counter is
// set to the top-left corner -- although fill operations can be
// done in any direction, the current screen rotation is applied
// because some users find it disconcerting when a fill does not
// occur top-to-bottom.
int x, y, t;
switch (rotation) {
default:
x = x1;
y = y1;
break;
case 1:
t = y1;
y1 = x1;
x1 = TFTWIDTH - 1 - y2;
y2 = x2;
x2 = TFTWIDTH - 1 - t;
x = x2;
y = y1;
break;
case 2:
t = x1;
x1 = TFTWIDTH - 1 - x2;
x2 = TFTWIDTH - 1 - t;
t = y1;
y1 = TFTHEIGHT - 1 - y2;
y2 = TFTHEIGHT - 1 - t;
x = x2;
y = y2;
break;
case 3:
t = x1;
x1 = y1;
y1 = TFTHEIGHT - 1 - x2;
x2 = y2;
y2 = TFTHEIGHT - 1 - t;
x = x1;
y = y2;
break;
}
writeRegister16(0x0050, x1); // Set address window
writeRegister16(0x0051, x2);
writeRegister16(0x0052, y1);
writeRegister16(0x0053, y2);
writeRegister16(0x0020, x); // Set address counter to top left
writeRegister16(0x0021, y);
} else if (driver == ID_7575) {
writeRegisterPair(HX8347G_COLADDRSTART_HI, HX8347G_COLADDRSTART_LO, x1);
writeRegisterPair(HX8347G_ROWADDRSTART_HI, HX8347G_ROWADDRSTART_LO, y1);
writeRegisterPair(HX8347G_COLADDREND_HI, HX8347G_COLADDREND_LO, x2);
writeRegisterPair(HX8347G_ROWADDREND_HI, HX8347G_ROWADDREND_LO, y2);
} else if ((driver == ID_9341) || (driver == ID_HX8357D)) {
uint32_t t;
t = x1;
t <<= 16;
t |= x2;
writeRegister32(ILI9341_COLADDRSET, t); // HX8357D uses same registers!
t = y1;
t <<= 16;
t |= y2;
writeRegister32(ILI9341_PAGEADDRSET, t); // HX8357D uses same registers!
}
CS_IDLE;
}
// Unlike the 932X drivers that set the address window to the full screen
// by default (using the address counter for drawPixel operations), the
// 7575 needs the address window set on all graphics operations. In order
// to save a few register writes on each pixel drawn, the lower-right
// corner of the address window is reset after most fill operations, so
// that drawPixel only needs to change the upper left each time.
void Adafruit_TFTLCD::setLR(void) {
CS_ACTIVE;
writeRegisterPair(HX8347G_COLADDREND_HI, HX8347G_COLADDREND_LO, _width - 1);
writeRegisterPair(HX8347G_ROWADDREND_HI, HX8347G_ROWADDREND_LO, _height - 1);
CS_IDLE;
}
// Fast block fill operation for fillScreen, fillRect, H/V line, etc.
// Requires setAddrWindow() has previously been called to set the fill
// bounds. 'len' is inclusive, MUST be >= 1.
void Adafruit_TFTLCD::flood(uint16_t color, uint32_t len) {
uint16_t blocks;
uint8_t i, hi = color >> 8, lo = color;
CS_ACTIVE;
CD_COMMAND;
if (driver == ID_9341) {
write8(0x2C);
} else if (driver == ID_932X) {
write8(0x00); // High byte of GRAM register...
write8(0x22); // Write data to GRAM
} else if (driver == ID_HX8357D) {
write8(HX8357_RAMWR);
} else {
write8(0x22); // Write data to GRAM
}
// Write first pixel normally, decrement counter by 1
CD_DATA;
write8(hi);
write8(lo);
len--;
blocks = (uint16_t)(len / 64); // 64 pixels/block
if (hi == lo) {
// High and low bytes are identical. Leave prior data
// on the port(s) and just toggle the write strobe.
while (blocks--) {
i = 16; // 64 pixels/block / 4 pixels/pass
do {
WR_STROBE;
WR_STROBE;
WR_STROBE;
WR_STROBE; // 2 bytes/pixel
WR_STROBE;
WR_STROBE;
WR_STROBE;
WR_STROBE; // x 4 pixels
} while (--i);
}
// Fill any remaining pixels (1 to 64)
for (i = (uint8_t)len & 63; i--;) {
WR_STROBE;
WR_STROBE;
}
} else {
while (blocks--) {
i = 16; // 64 pixels/block / 4 pixels/pass
do {
write8(hi);
write8(lo);
write8(hi);
write8(lo);
write8(hi);
write8(lo);
write8(hi);
write8(lo);
} while (--i);
}
for (i = (uint8_t)len & 63; i--;) {
write8(hi);
write8(lo);
}
}
CS_IDLE;
}
void Adafruit_TFTLCD::drawFastHLine(int16_t x, int16_t y, int16_t length,
uint16_t color) {
int16_t x2;
// Initial off-screen clipping
if ((length <= 0) || (y < 0) || (y >= _height) || (x >= _width) ||
((x2 = (x + length - 1)) < 0))
return;
if (x < 0) { // Clip left
length += x;
x = 0;
}
if (x2 >= _width) { // Clip right
x2 = _width - 1;
length = x2 - x + 1;
}
setAddrWindow(x, y, x2, y);
flood(color, length);
if (driver == ID_932X)
setAddrWindow(0, 0, _width - 1, _height - 1);
else
setLR();
}
void Adafruit_TFTLCD::drawFastVLine(int16_t x, int16_t y, int16_t length,
uint16_t color) {
int16_t y2;
// Initial off-screen clipping
if ((length <= 0) || (x < 0) || (x >= _width) || (y >= _height) ||
((y2 = (y + length - 1)) < 0))
return;
if (y < 0) { // Clip top
length += y;
y = 0;
}
if (y2 >= _height) { // Clip bottom
y2 = _height - 1;
length = y2 - y + 1;
}
setAddrWindow(x, y, x, y2);
flood(color, length);
if (driver == ID_932X)
setAddrWindow(0, 0, _width - 1, _height - 1);
else
setLR();
}
void Adafruit_TFTLCD::fillRect(int16_t x1, int16_t y1, int16_t w, int16_t h,
uint16_t fillcolor) {
int16_t x2, y2;
// Initial off-screen clipping
if ((w <= 0) || (h <= 0) || (x1 >= _width) || (y1 >= _height) ||
((x2 = x1 + w - 1) < 0) || ((y2 = y1 + h - 1) < 0))
return;
if (x1 < 0) { // Clip left
w += x1;
x1 = 0;
}
if (y1 < 0) { // Clip top
h += y1;
y1 = 0;
}
if (x2 >= _width) { // Clip right
x2 = _width - 1;
w = x2 - x1 + 1;
}
if (y2 >= _height) { // Clip bottom
y2 = _height - 1;
h = y2 - y1 + 1;
}
setAddrWindow(x1, y1, x2, y2);
flood(fillcolor, (uint32_t)w * (uint32_t)h);
if (driver == ID_932X)
setAddrWindow(0, 0, _width - 1, _height - 1);
else
setLR();
}
void Adafruit_TFTLCD::fillScreen(uint16_t color) {
if (driver == ID_932X) {
// For the 932X, a full-screen address window is already the default
// state, just need to set the address pointer to the top-left corner.
// Although we could fill in any direction, the code uses the current
// screen rotation because some users find it disconcerting when a
// fill does not occur top-to-bottom.
uint16_t x, y;
switch (rotation) {
default:
x = 0;
y = 0;
break;
case 1:
x = TFTWIDTH - 1;
y = 0;
break;
case 2:
x = TFTWIDTH - 1;
y = TFTHEIGHT - 1;
break;
case 3:
x = 0;
y = TFTHEIGHT - 1;
break;
}
CS_ACTIVE;
writeRegister16(0x0020, x);
writeRegister16(0x0021, y);
} else if ((driver == ID_9341) || (driver == ID_7575) ||
(driver == ID_HX8357D)) {
// For these, there is no settable address pointer, instead the
// address window must be set for each drawing operation. However,
// this display takes rotation into account for the parameters, no
// need to do extra rotation math here.
setAddrWindow(0, 0, _width - 1, _height - 1);
}
flood(color, (long)TFTWIDTH * (long)TFTHEIGHT);
}
void Adafruit_TFTLCD::drawPixel(int16_t x, int16_t y, uint16_t color) {
// Clip
if ((x < 0) || (y < 0) || (x >= _width) || (y >= _height))
return;
CS_ACTIVE;
if (driver == ID_932X) {
int16_t t;
switch (rotation) {
case 1:
t = x;
x = TFTWIDTH - 1 - y;
y = t;
break;
case 2:
x = TFTWIDTH - 1 - x;
y = TFTHEIGHT - 1 - y;
break;
case 3:
t = x;
x = y;
y = TFTHEIGHT - 1 - t;
break;
}
writeRegister16(0x0020, x);
writeRegister16(0x0021, y);
writeRegister16(0x0022, color);
} else if (driver == ID_7575) {
uint8_t hi, lo;
switch (rotation) {
default:
lo = 0;
break;
case 1:
lo = 0x60;
break;
case 2:
lo = 0xc0;
break;
case 3:
lo = 0xa0;
break;
}
writeRegister8(HX8347G_MEMACCESS, lo);
// Only upper-left is set -- bottom-right is full screen default
writeRegisterPair(HX8347G_COLADDRSTART_HI, HX8347G_COLADDRSTART_LO, x);
writeRegisterPair(HX8347G_ROWADDRSTART_HI, HX8347G_ROWADDRSTART_LO, y);
hi = color >> 8;
lo = color;
CD_COMMAND;
write8(0x22);
CD_DATA;
write8(hi);
write8(lo);
} else if ((driver == ID_9341) || (driver == ID_HX8357D)) {
setAddrWindow(x, y, _width - 1, _height - 1);
CS_ACTIVE;
CD_COMMAND;
write8(0x2C);
CD_DATA;
write8(color >> 8);
write8(color);
}
CS_IDLE;
}
// Issues 'raw' an array of 16-bit color values to the LCD; used
// externally by BMP examples. Assumes that setWindowAddr() has
// previously been set to define the bounds. Max 255 pixels at
// a time (BMP examples read in small chunks due to limited RAM).
void Adafruit_TFTLCD::pushColors(uint16_t *data, uint8_t len, boolean first) {
uint16_t color;
uint8_t hi, lo;
CS_ACTIVE;
if (first == true) { // Issue GRAM write command only on first call
CD_COMMAND;
if (driver == ID_932X)
write8(0x00);
if ((driver == ID_9341) || (driver == ID_HX8357D)) {
write8(0x2C);
} else {
write8(0x22);
}
}
CD_DATA;
while (len--) {
color = *data++;
hi = color >> 8; // Don't simplify or merge these
lo = color; // lines, there's macro shenanigans
write8(hi); // going on.
write8(lo);
}
CS_IDLE;
}
void Adafruit_TFTLCD::setRotation(uint8_t x) {
// Call parent rotation func first -- sets up rotation flags, etc.
Adafruit_GFX::setRotation(x);
// Then perform hardware-specific rotation operations...
CS_ACTIVE;
if (driver == ID_932X) {
uint16_t t;
switch (rotation) {
default:
t = 0x1030;
break;
case 1:
t = 0x1028;
break;
case 2:
t = 0x1000;
break;
case 3:
t = 0x1018;
break;
}
writeRegister16(0x0003, t); // MADCTL
// For 932X, init default full-screen address window:
setAddrWindow(0, 0, _width - 1, _height - 1); // CS_IDLE happens here
}
if (driver == ID_7575) {
uint8_t t;
switch (rotation) {
default:
t = 0;
break;
case 1:
t = 0x60;
break;
case 2:
t = 0xc0;
break;
case 3:
t = 0xa0;
break;
}
writeRegister8(HX8347G_MEMACCESS, t);
// 7575 has to set the address window on most drawing operations.
// drawPixel() cheats by setting only the top left...by default,
// the lower right is always reset to the corner.
setLR(); // CS_IDLE happens here
}
if (driver == ID_9341) {
// MEME, HX8357D uses same registers as 9341 but different values
uint16_t t = 0;
switch (rotation) {
case 2:
t = ILI9341_MADCTL_MX | ILI9341_MADCTL_BGR;
break;
case 3:
t = ILI9341_MADCTL_MV | ILI9341_MADCTL_BGR;
break;
case 0:
t = ILI9341_MADCTL_MY | ILI9341_MADCTL_BGR;
break;
case 1:
t = ILI9341_MADCTL_MX | ILI9341_MADCTL_MY | ILI9341_MADCTL_MV |
ILI9341_MADCTL_BGR;
break;
}
writeRegister8(ILI9341_MADCTL, t); // MADCTL
// For 9341, init default full-screen address window:
setAddrWindow(0, 0, _width - 1, _height - 1); // CS_IDLE happens here
}
if (driver == ID_HX8357D) {
// MEME, HX8357D uses same registers as 9341 but different values
uint16_t t = 0;
switch (rotation) {
case 2:
t = HX8357B_MADCTL_RGB;
break;
case 3:
t = HX8357B_MADCTL_MX | HX8357B_MADCTL_MV | HX8357B_MADCTL_RGB;
break;
case 0:
t = HX8357B_MADCTL_MX | HX8357B_MADCTL_MY | HX8357B_MADCTL_RGB;
break;
case 1:
t = HX8357B_MADCTL_MY | HX8357B_MADCTL_MV | HX8357B_MADCTL_RGB;
break;
}
writeRegister8(ILI9341_MADCTL, t); // MADCTL
// For 8357, init default full-screen address window:
setAddrWindow(0, 0, _width - 1, _height - 1); // CS_IDLE happens here
}
}
#ifdef read8isFunctionalized
#define read8(x) x = read8fn()
#endif
// Because this function is used infrequently, it configures the ports for
// the read operation, reads the data, then restores the ports to the write
// configuration. Write operations happen a LOT, so it's advantageous to
// leave the ports in that state as a default.
uint16_t Adafruit_TFTLCD::readPixel(int16_t x, int16_t y) {
if ((x < 0) || (y < 0) || (x >= _width) || (y >= _height))
return 0;
CS_ACTIVE;
if (driver == ID_932X) {
uint8_t hi, lo;
int16_t t;
switch (rotation) {
case 1:
t = x;
x = TFTWIDTH - 1 - y;
y = t;
break;
case 2:
x = TFTWIDTH - 1 - x;
y = TFTHEIGHT - 1 - y;
break;
case 3:
t = x;
x = y;
y = TFTHEIGHT - 1 - t;
break;
}
writeRegister16(0x0020, x);
writeRegister16(0x0021, y);
// Inexplicable thing: sometimes pixel read has high/low bytes
// reversed. A second read fixes this. Unsure of reason. Have
// tried adjusting timing in read8() etc. to no avail.
for (uint8_t pass = 0; pass < 2; pass++) {
CD_COMMAND;
write8(0x00);
write8(0x22); // Read data from GRAM
CD_DATA;
setReadDir(); // Set up LCD data port(s) for READ operations
read8(hi); // First 2 bytes back are a dummy read
read8(hi);
read8(hi); // Bytes 3, 4 are actual pixel value
read8(lo);
setWriteDir(); // Restore LCD data port(s) to WRITE configuration
}
CS_IDLE;
return ((uint16_t)hi << 8) | lo;
} else if (driver == ID_7575) {
uint8_t r, g, b;
writeRegisterPair(HX8347G_COLADDRSTART_HI, HX8347G_COLADDRSTART_LO, x);
writeRegisterPair(HX8347G_ROWADDRSTART_HI, HX8347G_ROWADDRSTART_LO, y);
CD_COMMAND;
write8(0x22); // Read data from GRAM
setReadDir(); // Set up LCD data port(s) for READ operations
CD_DATA;
read8(r); // First byte back is a dummy read
read8(r);
read8(g);
read8(b);
setWriteDir(); // Restore LCD data port(s) to WRITE configuration
CS_IDLE;
return (((uint16_t)r & B11111000) << 8) | (((uint16_t)g & B11111100) << 3) |
(b >> 3);
} else
return 0;
}
// Ditto with the read/write port directions, as above.
uint16_t Adafruit_TFTLCD::readID(void) {
uint16_t id;
// retry a bunch!
for (int i = 0; i < 5; i++) {
id = (uint16_t)readReg(0xD3);
delayMicroseconds(50);
if (id == 0x9341) {
return id;
}
}
uint8_t hi, lo;
/*
for (uint8_t i=0; i<128; i++) {
Serial.print("$"); Serial.print(i, HEX);
Serial.print(" = 0x"); Serial.println(readReg(i), HEX);
}
*/
if (readReg(0x04) == 0x8000) { // eh close enough
// setc!
/*
Serial.println("!");
for (uint8_t i=0; i<254; i++) {
Serial.print("$"); Serial.print(i, HEX);
Serial.print(" = 0x"); Serial.println(readReg(i), HEX);
}
*/
writeRegister24(HX8357D_SETC, 0xFF8357);
delay(300);
// Serial.println(readReg(0xD0), HEX);
if (readReg(0xD0) == 0x990000) {
return 0x8357;
}
}
CS_ACTIVE;
CD_COMMAND;
write8(0x00);
WR_STROBE; // Repeat prior byte (0x00)
setReadDir(); // Set up LCD data port(s) for READ operations
CD_DATA;
read8(hi);
read8(lo);
setWriteDir(); // Restore LCD data port(s) to WRITE configuration
CS_IDLE;
id = hi;
id <<= 8;
id |= lo;
return id;
}
uint32_t Adafruit_TFTLCD::readReg(uint8_t r) {
uint32_t id;
uint8_t x;
// try reading register #4
CS_ACTIVE;
CD_COMMAND;
write8(r);
setReadDir(); // Set up LCD data port(s) for READ operations
CD_DATA;
delayMicroseconds(50);
read8(x);
id = x; // Do not merge or otherwise simplify
id <<= 8; // these lines. It's an unfortunate
read8(x);
id |= x; // shenanigans that are going on.
id <<= 8; // these lines. It's an unfortunate
read8(x);
id |= x; // shenanigans that are going on.
id <<= 8; // these lines. It's an unfortunate
read8(x);
id |= x; // shenanigans that are going on.
CS_IDLE;
setWriteDir(); // Restore LCD data port(s) to WRITE configuration
// Serial.print("Read $"); Serial.print(r, HEX);
// Serial.print(":\t0x"); Serial.println(id, HEX);
return id;
}
// Pass 8-bit (each) R,G,B, get back 16-bit packed color
uint16_t Adafruit_TFTLCD::color565(uint8_t r, uint8_t g, uint8_t b) {
return ((r & 0xF8) << 8) | ((g & 0xFC) << 3) | (b >> 3);
}
// For I/O macros that were left undefined, declare function
// versions that reference the inline macros just once:
#ifndef write8
void Adafruit_TFTLCD::write8(uint8_t value) { write8inline(value); }
#endif
#ifdef read8isFunctionalized
uint8_t Adafruit_TFTLCD::read8fn(void) {
uint8_t result;
read8inline(result);
return result;
}
#endif
#ifndef setWriteDir
void Adafruit_TFTLCD::setWriteDir(void) { setWriteDirInline(); }
#endif
#ifndef setReadDir
void Adafruit_TFTLCD::setReadDir(void) { setReadDirInline(); }
#endif
#ifndef writeRegister8
void Adafruit_TFTLCD::writeRegister8(uint8_t a, uint8_t d) {
writeRegister8inline(a, d);
}
#endif
#ifndef writeRegister16
void Adafruit_TFTLCD::writeRegister16(uint16_t a, uint16_t d) {
writeRegister16inline(a, d);
}
#endif
#ifndef writeRegisterPair
void Adafruit_TFTLCD::writeRegisterPair(uint8_t aH, uint8_t aL, uint16_t d) {
writeRegisterPairInline(aH, aL, d);
}
#endif
void Adafruit_TFTLCD::writeRegister24(uint8_t r, uint32_t d) {
CS_ACTIVE;
CD_COMMAND;
write8(r);
CD_DATA;
delayMicroseconds(10);
write8(d >> 16);
delayMicroseconds(10);
write8(d >> 8);
delayMicroseconds(10);
write8(d);
CS_IDLE;
}
void Adafruit_TFTLCD::writeRegister32(uint8_t r, uint32_t d) {
CS_ACTIVE;
CD_COMMAND;
write8(r);
CD_DATA;
delayMicroseconds(10);
write8(d >> 24);
delayMicroseconds(10);
write8(d >> 16);
delayMicroseconds(10);
write8(d >> 8);
delayMicroseconds(10);
write8(d);
CS_IDLE;
}