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Tasmota/lib/lib_display/JaretBurkett_ILI9488-gemu-1.0/ILI9488.cpp

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/***************************************************
STM32 Support added by Jaret Burkett at OSHlab.com
This is our library for the Adafruit ILI9488 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
****************************************************/
#include <SPI.h>
#include "ILI9488.h"
#include <limits.h>
// if using software spi this optimizes the code
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#ifdef ESP32
#define ILI9488_DIMMER
#undef ESP32_PWM_CHANNEL
#define ESP32_PWM_CHANNEL 1
#endif
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#define ILI9488_START start();
#define ILI9488_STOP stop();
const uint16_t ili9488_colors[]={ILI9488_BLACK,ILI9488_WHITE,ILI9488_RED,ILI9488_GREEN,ILI9488_BLUE,ILI9488_CYAN,ILI9488_MAGENTA,\
ILI9488_YELLOW,ILI9488_NAVY,ILI9488_DARKGREEN,ILI9488_DARKCYAN,ILI9488_MAROON,ILI9488_PURPLE,ILI9488_OLIVE,\
ILI9488_LIGHTGREY,ILI9488_DARKGREY,ILI9488_ORANGE,ILI9488_GREENYELLOW,ILI9488_PINK};
// Constructor when using software SPI. All output pins are configurable.
ILI9488::ILI9488(int8_t cs,int8_t mosi,int8_t sclk,int8_t bp) : Renderer(ILI9488_TFTWIDTH, ILI9488_TFTHEIGHT) {
_cs = cs;
_mosi = mosi;
_sclk = sclk;
_bp = bp;
_hwspi = 0;
}
/*
CPU Clock = 80 Mhz
max clock of display is 15 Mhz (66ns sclk cycle)
so cpu/8 => 10 Mhz should be ok
HSPI CLK 5 GPIO14
HSPI /CS 8 GPIO15
HSPI MOSI 7 GPIO13
HSPI MISO 6 GPIO12
GPIO names for your easy reference:
GPIO0: PERIPHS_IO_MUX_GPIO0_U
GPIO1: PERIPHS_IO_MUX_U0TXD_U
GPIO2: PERIPHS_IO_MUX_GPIO2_U
GPIO3: PERIPHS_IO_MUX_U0RXD_U
GPIO4: PERIPHS_IO_MUX_GPIO4_U
GPIO5: PERIPHS_IO_MUX_GPIO5_U
GPIO6: PERIPHS_IO_MUX_SD_CLK_U
GPIO7: PERIPHS_IO_MUX_SD_DATA0_U
GPIO8: PERIPHS_IO_MUX_SD_DATA1_U
GPIO9: PERIPHS_IO_MUX_SD_DATA2_U
GPIO10: PERIPHS_IO_MUX_SD_DATA3_U
GPIO11: PERIPHS_IO_MUX_SD_CMD_U
GPIO12: PERIPHS_IO_MUX_MTDI_U
GPIO13: PERIPHS_IO_MUX_MTCK_U
GPIO14: PERIPHS_IO_MUX_MTMS_U
GPIO15: PERIPHS_IO_MUX_MTDO_U
*/
uint8_t ili9488_start;
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#ifndef ESP32
// ESP8266
#include "spi_register.h"
#define SWSPI_OPTMODE
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// this enables the 27 bit packed mode
#define RGB_PACK_MODE
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uint32_t ili9488_clock;
uint32_t ili9488_usr;
uint32_t ili9488_usr1;
uint32_t ili9488_usr2;
uint32_t ili9488_spi1c;
uint32_t ili9488_spi1c1;
uint32_t ili9488_spi1p;
uint32_t ili9488_gpmux;
uint32_t ili9488_mtdo;
uint32_t ili9488_clock_prev;
uint32_t ili9488_usr_prev;
uint32_t ili9488_usr1_prev;
uint32_t ili9488_usr2_prev;
uint32_t ili9488_spi1c_prev;
uint32_t ili9488_spi1c1_prev;
uint32_t ili9488_spi1p_prev;
uint32_t ili9488_gpmux_prev;
uint32_t ili9488_mtdo_prev;
// code from espressif SDK
/******************************************************************************
* FunctionName : spi_lcd_mode_init
* Description : SPI master initial function for driving LCD 3 wire spi
*******************************************************************************/
void ILI9488::spi_lcd_mode_init(void) {
ili9488_clock_prev=SPI1CLK;
ili9488_usr_prev=SPI1U;
ili9488_usr1_prev=SPI1U1;
ili9488_usr2_prev=SPI1U2;
ili9488_spi1c_prev=SPI1C;
ili9488_spi1c1_prev=SPI1C1;
ili9488_spi1p_prev=SPI1P;
ili9488_gpmux_prev=GPMUX;
ili9488_mtdo_prev=READ_PERI_REG(PERIPHS_IO_MUX_MTDO_U);
SPI1U = SPIUMOSI | SPIUDUPLEX | SPIUSSE;
SPI1U1=0;
SPI1C = 0;
SPI1C1 = 0;
//bit9 of PERIPHS_IO_MUX should be cleared when HSPI clock doesn't equal CPU clock
//bit8 of PERIPHS_IO_MUX should be cleared when SPI clock doesn't equal CPU clock
WRITE_PERI_REG(PERIPHS_IO_MUX, 0x105); //clear bit9
//PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTDI_U, 2);//configure miso to spi mode
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTCK_U, 2);//configure mosi to spi mode
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTMS_U, 2);//configure sclk to spi mode
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTDO_U, 2);//configure cs to spi mode
// the current implementation leaves about 1 us between transfers ????
// due to lack of documentation i could not find the reason
// skipping this would double the speed !!!
//SET_PERI_REG_MASK(SPI_USER(1), SPI_CS_SETUP|SPI_CS_HOLD|SPI_USR_COMMAND);
SET_PERI_REG_MASK(SPI_USER(1), SPI_USR_COMMAND);
CLEAR_PERI_REG_MASK(SPI_USER(1), SPI_FLASH_MODE);
// SPI clock=CPU clock/8 => 10 Mhz
/*
WRITE_PERI_REG(SPI_CLOCK(1),
((1&SPI_CLKDIV_PRE)<<SPI_CLKDIV_PRE_S)|
((3&SPI_CLKCNT_N)<<SPI_CLKCNT_N_S)|
((1&SPI_CLKCNT_H)<<SPI_CLKCNT_H_S)|
((3&SPI_CLKCNT_L)<<SPI_CLKCNT_L_S)); //clear bit 31,set SPI clock div
*/
// will result in 80/6 = 13,3 Mhz
//SPI.setFrequency(15000000);
// due to capacitiv load problems max freq is not always possible
// keep lines as short as possible, especially if other spi devices connected
SPI.setFrequency(10000000);
ili9488_clock=SPI1CLK;
ili9488_usr=SPI1U;
ili9488_usr1=SPI1U1;
ili9488_usr2=SPI1U2;
ili9488_spi1c=SPI1C;
ili9488_spi1c1=SPI1C1;
ili9488_spi1p=SPI1P;
ili9488_gpmux=GPMUX;
ili9488_mtdo=READ_PERI_REG(PERIPHS_IO_MUX_MTDO_U);
ili9488_start=0;
}
void ILI9488::start(void) {
if (ili9488_start) return;
//while(SPI1CMD & SPIBUSY) {}
while(READ_PERI_REG(SPI_CMD(1))&SPI_USR);
SPI1CLK=ili9488_clock;
SPI1U=ili9488_usr;
SPI1U1=ili9488_usr1;
SPI1U2=ili9488_usr2;
SPI1C=ili9488_spi1c;
SPI1C1=ili9488_spi1c1;
SPI1P=ili9488_spi1p;
GPMUX=ili9488_gpmux;
WRITE_PERI_REG(PERIPHS_IO_MUX_MTDO_U,ili9488_mtdo);
ili9488_start=1;
}
void ILI9488::stop(void) {
if (!ili9488_start) return;
//while(SPI1CMD & SPIBUSY) {}
while(READ_PERI_REG(SPI_CMD(1))&SPI_USR);
WRITE_PERI_REG(PERIPHS_IO_MUX_MTDO_U,ili9488_mtdo_prev);
SPI1CLK=ili9488_clock_prev;
SPI1U=ili9488_usr_prev;
SPI1U1=ili9488_usr1_prev;
SPI1U2=ili9488_usr2_prev;
SPI1C=ili9488_spi1c_prev;
SPI1C1=ili9488_spi1c1_prev;
SPI1P=ili9488_spi1p_prev;
GPMUX=ili9488_gpmux_prev;
ili9488_start=0;
}
// dc = 0
void ILI9488::writecommand(uint8_t c) {
if (_hwspi) {
uint32_t regvalue;
uint8_t bytetemp;
bytetemp=(c>>1)&0x7f;
ILI9488_START
regvalue= ((8&SPI_USR_COMMAND_BITLEN)<<SPI_USR_COMMAND_BITLEN_S)|((uint32)bytetemp); //configure transmission variable,9bit transmission length and first 8 command bit
if(c&0x01) regvalue|=BIT15; //write the 9th bit
while(READ_PERI_REG(SPI_CMD(1))&SPI_USR); //waiting for spi module available
WRITE_PERI_REG(SPI_USER2(1), regvalue); //write command and command length into spi reg
SET_PERI_REG_MASK(SPI_CMD(1), SPI_USR); //transmission start
} else fastSPIwrite(c,0);
}
// dc = 1
void ILI9488::writedata(uint8_t d) {
if (_hwspi) {
uint32_t regvalue;
uint8_t bytetemp;
bytetemp=(d>>1)|0x80;
ILI9488_START
regvalue= ((8&SPI_USR_COMMAND_BITLEN)<<SPI_USR_COMMAND_BITLEN_S)|((uint32)bytetemp); //configure transmission variable,9bit transmission length and first 8 command bit
if(d&0x01) regvalue|=BIT15; //write the 9th bit
while(READ_PERI_REG(SPI_CMD(1))&SPI_USR); //waiting for spi module available
WRITE_PERI_REG(SPI_USER2(1), regvalue); //write command and command length into spi reg
SET_PERI_REG_MASK(SPI_CMD(1), SPI_USR); //transmission start
} else fastSPIwrite(d,1);
}
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void ICACHE_RAM_ATTR ILI9488::fastSPIwrite(uint8_t d,uint8_t dc) {
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WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_cs);
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
if(dc) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
else WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
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for(uint8_t bit = 0x80; bit; bit >>= 1) {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
if(d&bit) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
else WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
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}
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WRITE_PERI_REG( PIN_OUT_SET, 1<<_cs);
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}
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#else
// ESP32 section
void ILI9488::writedata(uint8_t d) {
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ILI9488_START
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fastSPIwrite(d,1);
}
void ILI9488::writecommand(uint8_t c) {
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ILI9488_START
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fastSPIwrite(c,0);
}
#include "soc/spi_reg.h"
#include "soc/spi_struct.h"
#include "esp32-hal-spi.h"
#include "esp32-hal.h"
#include "soc/spi_struct.h"
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#define RGB_PACK_MODE
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// since ardunio transferBits ia completely disfunctional
// we use our own hardware driver for 9 bit spi
void ILI9488::fastSPIwrite(uint8_t d,uint8_t dc) {
digitalWrite( _cs, LOW);
uint32_t regvalue=d>>1;
if (dc) regvalue|=0x80;
else regvalue&=0x7f;
if (d&1) regvalue|=0x8000;
REG_SET_BIT(SPI_USER_REG(3), SPI_USR_MOSI);
REG_WRITE(SPI_MOSI_DLEN_REG(3), 9 - 1);
uint32_t *dp=(uint32_t*)SPI_W0_REG(3);
*dp=regvalue;
REG_SET_BIT(SPI_CMD_REG(3), SPI_USR);
while (REG_GET_FIELD(SPI_CMD_REG(3), SPI_USR));
digitalWrite( _cs, HIGH);
}
SPISettings ili9488_spiSettings;
void ILI9488::start(void) {
if (ili9488_start) return;
SPI.beginTransaction(ili9488_spiSettings);
ili9488_start=1;
}
void ILI9488::stop(void) {
if (!ili9488_start) return;
SPI.endTransaction();
ili9488_start=0;
}
#endif
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uint16_t ILI9488::GetColorFromIndex(uint8_t index) {
if (index>=sizeof(ili9488_colors)/2) index=0;
return ili9488_colors[index];
}
void ILI9488::DisplayInit(int8_t p,int8_t size,int8_t rot,int8_t font) {
setRotation(rot);
invertDisplay(false);
setTextWrap(false); // Allow text to run off edges
cp437(true);
setTextFont(font&3);
setTextSize(size&7);
setTextColor(ILI9488_WHITE,ILI9488_BLACK);
setCursor(0,0);
fillScreen(ILI9488_BLACK);
ILI9488_STOP
}
void ILI9488::DisplayOnff(int8_t on) {
if (on) {
writecommand(ILI9488_DISPON); //Display on
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if (_bp>=0) {
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#ifdef ILI9488_DIMMER
ledcWrite(ESP32_PWM_CHANNEL,dimmer);
#else
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digitalWrite(_bp,HIGH);
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#endif
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/*
writecommand(ILI9488_WRCTRLD);
writedata(0x0c);
writecommand(ILI9488_CAPC9);
writedata(0x3f);*/
}
} else {
writecommand(ILI9488_DISPOFF);
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if (_bp>=0) {
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#ifdef ILI9488_DIMMER
ledcWrite(ESP32_PWM_CHANNEL,0);
#else
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digitalWrite(_bp,LOW);
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#endif
}
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//writecommand(ILI9488_WRCTRLD);
//writedata(0x04);
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}
ILI9488_STOP
}
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// dimmer 0-100
void ILI9488::dim(uint8_t dim) {
dimmer = dim;
if (dimmer>15) dimmer=15;
dimmer=((float)dimmer/15.0)*255.0;
#ifdef ESP32
ledcWrite(ESP32_PWM_CHANNEL,dimmer);
#endif
}
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void ILI9488::begin(void) {
pinMode(_cs, OUTPUT);
digitalWrite(_cs,HIGH);
pinMode(_sclk, OUTPUT);
pinMode(_mosi, OUTPUT);
if (_bp>=0) {
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#ifdef ILI9488_DIMMER
ledcSetup(ESP32_PWM_CHANNEL,4000,8);
ledcAttachPin(_bp,ESP32_PWM_CHANNEL);
ledcWrite(ESP32_PWM_CHANNEL,128);
#else
pinMode(_bp, OUTPUT);
digitalWrite(_bp,HIGH);
#endif
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}
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#ifndef ESP32
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if ((_sclk==14) && (_mosi==13) && (_cs==15)) {
// we use hardware spi
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SPI.begin();
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_hwspi=1;
spi_lcd_mode_init();
} else {
// we must use software spi
_hwspi=0;
}
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#else
SPI.begin(_sclk,-1,_mosi, -1);
ili9488_spiSettings = SPISettings(10000000, MSBFIRST, SPI_MODE3);
_hwspi=1;
#endif
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ILI9488_START
delay(1);
writecommand(0xE0);
writedata(0x00);
writedata(0x03);
writedata(0x09);
writedata(0x08);
writedata(0x16);
writedata(0x0A);
writedata(0x3F);
writedata(0x78);
writedata(0x4C);
writedata(0x09);
writedata(0x0A);
writedata(0x08);
writedata(0x16);
writedata(0x1A);
writedata(0x0F);
writecommand(0XE1);
writedata(0x00);
writedata(0x16);
writedata(0x19);
writedata(0x03);
writedata(0x0F);
writedata(0x05);
writedata(0x32);
writedata(0x45);
writedata(0x46);
writedata(0x04);
writedata(0x0E);
writedata(0x0D);
writedata(0x35);
writedata(0x37);
writedata(0x0F);
writecommand(0XC0); //Power Control 1
writedata(0x17); //Vreg1out
writedata(0x15); //Verg2out
writecommand(0xC1); //Power Control 2
writedata(0x41); //VGH,VGL
writecommand(0xC5); //Power Control 3
writedata(0x00);
writedata(0x12); //Vcom
writedata(0x80);
writecommand(0x36); //Memory Access
writedata(0x48);
writecommand(0x3A); // Interface Pixel Format
writedata(0x66); //18 bit
writecommand(0XB0); // Interface Mode Control
writedata(0x80); //SDO NOT USE
writecommand(0xB1); //Frame rate
writedata(0xA0); //60Hz
writecommand(0xB4); //Display Inversion Control
writedata(0x02); //2-dot
writecommand(0XB6); //Display Function Control RGB/MCU Interface Control
writedata(0x02); //MCU
writedata(0x02); //Source,Gate scan dieection
writecommand(0XE9); // Set Image Functio
writedata(0x00); // Disable 24 bit data
writecommand(0xF7); // Adjust Control
writedata(0xA9);
writedata(0x51);
writedata(0x2C);
writedata(0x82); // D7 stream, loose
writecommand(ILI9488_SLPOUT); //Exit Sleep
delay(120);
writecommand(ILI9488_DISPON); //Display on
ILI9488_STOP
}
/*
void ILI9488::setScrollArea(uint16_t topFixedArea, uint16_t bottomFixedArea){
writecommand(0x33); // Vertical scroll definition
writedata(topFixedArea >> 8);
writedata(topFixedArea);
writedata((_height - topFixedArea - bottomFixedArea) >> 8);
writedata(_height - topFixedArea - bottomFixedArea);
writedata(bottomFixedArea >> 8);
writedata(bottomFixedArea);
ILI9488_STOP
}
void ILI9488::scroll(uint16_t pixels){
writecommand(0x37); // Vertical scrolling start address
writedata(pixels >> 8);
writedata(pixels);
ILI9488_STOP
}*/
void ILI9488::setAddrWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1) {
uint8_t flag=0;
if (!x0 && !y0 && !x1 && !y1) {
x0=0;
y0=0;
x1=_width;
y1=_height;
flag=1;
}
if (x1>_width) x1=_width;
if (y1>_height) y1=_height;
writecommand(ILI9488_CASET); // Column addr set
writedata(x0 >> 8);
writedata(x0 & 0xFF); // XSTART
writedata(x1 >> 8);
writedata(x1 & 0xFF); // XEND
writecommand(ILI9488_PASET); // Row addr set
writedata(y0>>8);
writedata(y0 &0xff); // YSTART
writedata(y1>>8);
writedata(y1 &0xff); // YEND
writecommand(ILI9488_RAMWR); // write to RAM
if (flag) ILI9488_STOP
}
/*
void ILI9488::drawImage(const uint8_t* img, uint16_t x, uint16_t y, uint16_t w, uint16_t h){
return;
// 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;
setAddrWindow(x, y, x+w-1, y+h-1);
// uint8_t hi = color >> 8, lo = color;
#if defined(USE_FAST_PINIO) && !defined (_VARIANT_ARDUINO_STM32_)
*dcport |= dcpinmask;
*csport &= ~cspinmask;
#else
digitalWrite(_dc, HIGH);
digitalWrite(_cs, LOW);
#endif
uint8_t linebuff[w*3+1];
uint16_t pixels = w*h;
// uint16_t count = 0;
uint32_t count = 0;
for (uint16_t i = 0; i < h; i++) {
uint16_t pixcount = 0;
for (uint16_t o = 0; o < w; o++) {
uint8_t b1 = img[count];
count++;
uint8_t b2 = img[count];
count++;
uint16_t color = b1 << 8 | b2;
linebuff[pixcount] = (((color & 0xF800) >> 11)* 255) / 31;
pixcount++;
linebuff[pixcount] = (((color & 0x07E0) >> 5) * 255) / 63;
pixcount++;
linebuff[pixcount] = ((color & 0x001F)* 255) / 31;
pixcount++;
} // for row
#if defined (__STM32F1__)
SPI.dmaSend(linebuff, w*3);
#else
for(uint16_t b = 0; b < w*3; b++){
spiwrite(linebuff[b]);
}
#endif
}// for col
#if defined(USE_FAST_PINIO) && !defined (_VARIANT_ARDUINO_STM32_)
*csport |= cspinmask;
#else
digitalWrite(_cs, HIGH);
#endif
if (hwSPI) spi_end();
}
*/
void ILI9488::pushColor(uint16_t color) {
write16BitColor(color);
ILI9488_STOP
}
void ILI9488::pushColors(uint16_t *data, uint8_t len, boolean first) {
uint16_t color;
uint8_t buff[len*3+1];
uint16_t count = 0;
uint8_t lencount = len;
while(lencount--) {
color = *data++;
buff[count] = (((color & 0xF800) >> 11)* 255) / 31;
count++;
buff[count] = (((color & 0x07E0) >> 5) * 255) / 63;
count++;
buff[count] = ((color & 0x001F)* 255) / 31;
count++;
}
for(uint16_t b = 0; b < len*3; b++){
writedata(buff[b]);
}
ILI9488_STOP
}
void ILI9488::write16BitColor(uint16_t color){
// #if (__STM32F1__)
// uint8_t buff[4] = {
// (((color & 0xF800) >> 11)* 255) / 31,
// (((color & 0x07E0) >> 5) * 255) / 63,
// ((color & 0x001F)* 255) / 31
// };
// SPI.dmaSend(buff, 3);
// #else
uint8_t r = (color & 0xF800) >> 11;
uint8_t g = (color & 0x07E0) >> 5;
uint8_t b = color & 0x001F;
r = (r * 255) / 31;
g = (g * 255) / 63;
b = (b * 255) / 31;
#ifndef SWSPI_OPTMODE
writedata(r);
writedata(g);
writedata(b);
#else
if (_hwspi) {
writedata(r);
writedata(g);
writedata(b);
} else {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_cs);
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
for(uint8_t bit = 0x80; bit; bit >>= 1) {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
if(r&bit) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
else WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
}
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
for(uint8_t bit = 0x80; bit; bit >>= 1) {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
if(g&bit) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
else WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
}
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
for(uint8_t bit = 0x80; bit; bit >>= 1) {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
if(b&bit) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
else WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
}
WRITE_PERI_REG( PIN_OUT_SET, 1<<_cs);
}
#endif
ILI9488_STOP
}
void ILI9488::drawPixel(int16_t x, int16_t y, uint16_t color) {
if((x < 0) ||(x >= _width) || (y < 0) || (y >= _height)) return;
setAddrWindow(x,y,x+1,y+1);
write16BitColor(color);
ILI9488_STOP
}
void ILI9488::drawFastVLine(int16_t x, int16_t y, int16_t h,
uint16_t color) {
// Rudimentary clipping
if((x >= _width) || (y >= _height)) return;
if((y+h-1) >= _height)
h = _height-y;
setAddrWindow(x, y, x, y+h-1);
uint8_t r = (color & 0xF800) >> 11;
uint8_t g = (color & 0x07E0) >> 5;
uint8_t b = color & 0x001F;
r = (r * 255) / 31;
g = (g * 255) / 63;
b = (b * 255) / 31;
while (h--) {
#ifndef SWSPI_OPTMODE
writedata(r);
writedata(g);
writedata(b);
#else
if (_hwspi) {
writedata(r);
writedata(g);
writedata(b);
} else {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_cs);
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
for(uint8_t bit = 0x80; bit; bit >>= 1) {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
if(r&bit) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
else WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
}
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
for(uint8_t bit = 0x80; bit; bit >>= 1) {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
if(g&bit) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
else WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
}
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
for(uint8_t bit = 0x80; bit; bit >>= 1) {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
if(b&bit) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
else WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
}
WRITE_PERI_REG( PIN_OUT_SET, 1<<_cs);
}
#endif
}
ILI9488_STOP
}
void ILI9488::drawFastHLine(int16_t x, int16_t y, int16_t w,
uint16_t color) {
// Rudimentary clipping
if((x >= _width) || (y >= _height)) return;
if((x+w-1) >= _width) w = _width-x;
setAddrWindow(x, y, x+w-1, y);
uint8_t r = (color & 0xF800) >> 11;
uint8_t g = (color & 0x07E0) >> 5;
uint8_t b = color & 0x001F;
r = (r * 255) / 31;
g = (g * 255) / 63;
b = (b * 255) / 31;
while (w--) {
#ifndef SWSPI_OPTMODE
writedata(r);
writedata(g);
writedata(b);
#else
if (_hwspi) {
writedata(r);
writedata(g);
writedata(b);
} else {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_cs);
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
for(uint8_t bit = 0x80; bit; bit >>= 1) {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
if(r&bit) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
else WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
}
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
for(uint8_t bit = 0x80; bit; bit >>= 1) {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
if(g&bit) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
else WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
}
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
for(uint8_t bit = 0x80; bit; bit >>= 1) {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
if(b&bit) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
else WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
}
WRITE_PERI_REG( PIN_OUT_SET, 1<<_cs);
}
#endif
}
ILI9488_STOP
}
// this moves 460 kbytes
// now at 475 ms with 13,3 Mhz clock
void ILI9488::fillScreen(uint16_t color) {
//uint32_t time=millis();
fillRect(0, 0, _width, _height, color);
//time=millis()-time;
//Serial.printf("time %d ms\n",time);
ILI9488_STOP
}
//#define WAIT_9BITS asm_nop_9bits();
#define WAIT_9BITS
//#define WAIT_BEFORE while(*((uint32_t *)0x60000100)&SPI_USR); //waiting for spi module available
#define WAIT_SPI_READY while(READ_PERI_REG(SPI_CMD(1))&SPI_USR);
//#define WAIT_SPI_READY
//#define DIAG_PIN_SET WRITE_PERI_REG( PIN_OUT_SET, 1<<2);
//#define DIAG_PIN_CLR WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<2);
#define DIAG_PIN_SET
#define DIAG_PIN_CLR
//#define WRITE_PERI_REG(addr, val) (*((volatile uint32_t *)ETS_UNCACHED_ADDR(addr))) = (uint32_t)(val)
// CMD 0x60000200-1*0x100
// SPI_USER2 0x60000200-1*0x100 + 0x24
//#define WRITE_SPI_REG WRITE_PERI_REG(0x60000124, regvalue_r);SET_PERI_REG_MASK(0x60000100, SPI_USR);
// THIS TAKES 1 us => 80 cpu clock cycles !!!!!!!!!!!!!!!!!!!!!!!!!!
// probably the memw causes this delay
#define WRITE_SPI_REG(A) WRITE_PERI_REG(SPI_USER2(1), A); SET_PERI_REG_MASK(SPI_CMD(1), SPI_USR);
//#define WRITE_SPI_REG(A) *((uint32_t *)0x60000124)=A; *((uint32_t *)0x60000100)|=SPI_USR;
//#define WRITE_SPI_REG
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// extremely strange => if this code is merged into pack_rgb() the software crashes
// swap bytes
uint32_t ulswap(uint32_t data) {
union {
uint32_t l;
uint8_t b[4];
} data_;
data_.l = data;
// MSBFIRST Byte first
data = (data_.b[3] | (data_.b[2] << 8) | (data_.b[1] << 16) | (data_.b[0] << 24));
return data;
}
// pack RGB into uint32
uint32_t pack_rgb(uint32_t r, uint32_t g, uint32_t b) {
uint32_t data;
data=r<<23;
data|=g<<14;
data|=b<<5;
data|=0b10000000010000000010000000000000;
return ulswap(data);
}
ILI9488 ESP32
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#ifndef ESP32
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// fill a rectangle
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void ILI9488::fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color) {
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ILI9488_START
// 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;
setAddrWindow(x, y, x+w-1, y+h-1);
//ILI9488_START
uint8_t r = (color & 0xF800) >> 11;
uint8_t g = (color & 0x07E0) >> 5;
uint8_t b = color & 0x001F;
r = (r * 255) / 31;
g = (g * 255) / 63;
b = (b * 255) / 31;
uint32_t regvalue_r,regvalue_g,regvalue_b;
uint32_t data;
if (_hwspi) {
// precalculate the register values for rgb
#ifndef RGB_PACK_MODE
uint8_t bytetemp;
bytetemp=(r>>1)|0x80;
regvalue_r= ((8&SPI_USR_COMMAND_BITLEN)<<SPI_USR_COMMAND_BITLEN_S)|((uint32)bytetemp); //configure transmission variable,9bit transmission length and first 8 command bit
if(r&0x01) regvalue_r|=BIT15; //write the 9th bit
bytetemp=(g>>1)|0x80;
regvalue_g= ((8&SPI_USR_COMMAND_BITLEN)<<SPI_USR_COMMAND_BITLEN_S)|((uint32)bytetemp); //configure transmission variable,9bit transmission length and first 8 command bit
if(g&0x01) regvalue_g|=BIT15; //write the 9th bit
bytetemp=(b>>1)|0x80;
regvalue_b= ((8&SPI_USR_COMMAND_BITLEN)<<SPI_USR_COMMAND_BITLEN_S)|((uint32)bytetemp); //configure transmission variable,9bit transmission length and first 8 command bit
if(b&0x01) regvalue_b|=BIT15; //write the 9th bit
#else
// init 27 bit mode
uint16_t bits=27;
//const uint32_t mask = ~((SPIMMOSI << SPILMOSI) | (SPIMMISO << SPILMISO));
const uint32_t mask = ~((SPIMMOSI << SPILMOSI) );
bits--;
SPI1U1 = ((SPI1U1 & mask) | ((bits << SPILMOSI)));
SPI1C = 0;
SPI1C &= ~(SPICWBO | SPICRBO); // => MSBFIRST
SPI1U = SPIUMOSI;
SPI1C1 = 0;
data=pack_rgb(r,g,b);
#endif
}
for(y=h; y>0; y--) {
delay(0);
for(x=w; x>0; x--) {
#ifndef SWSPI_OPTMODE
writedata(r);
writedata(g);
writedata(b);
#else
if (_hwspi) {
//noInterrupts();
#ifdef RGB_PACK_MODE
while(SPI1CMD & SPIBUSY) {}
SPI1W0 = data;
SPI1CMD |= SPIBUSY;
#else
DIAG_PIN_CLR
WAIT_SPI_READY
DIAG_PIN_SET
WRITE_SPI_REG(regvalue_r)
WAIT_9BITS
DIAG_PIN_CLR
WAIT_SPI_READY
DIAG_PIN_SET
WRITE_SPI_REG(regvalue_g)
WAIT_9BITS
DIAG_PIN_CLR
WAIT_SPI_READY
DIAG_PIN_SET
WRITE_SPI_REG(regvalue_b)
WAIT_9BITS
//interrupts();
#endif
} else {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_cs);
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
for(uint8_t bit = 0x80; bit; bit >>= 1) {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
if(r&bit) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
else WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
}
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
for(uint8_t bit = 0x80; bit; bit >>= 1) {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
if(g&bit) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
else WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
}
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
for(uint8_t bit = 0x80; bit; bit >>= 1) {
WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
if(b&bit) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
else WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
}
WRITE_PERI_REG( PIN_OUT_SET, 1<<_cs);
}
#endif
}
}
#ifdef RGB_PACK_MODE
// reinit old mode
while(SPI1CMD & SPIBUSY) {}
ILI9488_STOP
//spi_lcd_mode_init();
#endif
}
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#else
// ESP32
void ILI9488::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 + w - 1) >= _width) w = _width - x;
if((y + h - 1) >= _height) h = _height - y;
setAddrWindow(x, y, x+w-1, y+h-1);
uint8_t r = (color & 0xF800) >> 11;
uint8_t g = (color & 0x07E0) >> 5;
uint8_t b = color & 0x001F;
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ILI9488 ESP32
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r = (r * 255) / 31;
g = (g * 255) / 63;
b = (b * 255) / 31;
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#ifdef RGB_PACK_MODE
// init 27 bit mode
uint32_t data=pack_rgb(r,g,b);
REG_SET_BIT(SPI_USER_REG(3), SPI_USR_MOSI);
REG_WRITE(SPI_MOSI_DLEN_REG(3), 27 - 1);
uint32_t *dp=(uint32_t*)SPI_W0_REG(3);
digitalWrite( _cs, LOW);
#endif
ILI9488 ESP32
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for(y=h; y>0; y--) {
for(x=w; x>0; x--) {
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#ifndef RGB_PACK_MODE
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writedata(r);
writedata(g);
writedata(b);
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#else
while (REG_GET_FIELD(SPI_CMD_REG(3), SPI_USR));
*dp=data;
REG_SET_BIT(SPI_CMD_REG(3), SPI_USR);
#endif
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}
}
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#ifdef RGB_PACK_MODE
while (REG_GET_FIELD(SPI_CMD_REG(3), SPI_USR));
digitalWrite( _cs, HIGH);
#endif
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ILI9488_STOP
}
#endif
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// Pass 8-bit (each) R,G,B, get back 16-bit packed color
uint16_t ILI9488::color565(uint8_t r, uint8_t g, uint8_t b) {
return ((r & 0xF8) << 8) | ((g & 0xFC) << 3) | (b >> 3);
}
#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 ILI9488::setRotation(uint8_t m) {
writecommand(ILI9488_MADCTL);
rotation = m % 4; // can't be higher than 3
switch (rotation) {
case 0:
writedata(MADCTL_MX | MADCTL_BGR);
_width = ILI9488_TFTWIDTH;
_height = ILI9488_TFTHEIGHT;
break;
case 1:
writedata(MADCTL_MV | MADCTL_BGR);
_width = ILI9488_TFTHEIGHT;
_height = ILI9488_TFTWIDTH;
break;
case 2:
writedata(MADCTL_MY | MADCTL_BGR);
_width = ILI9488_TFTWIDTH;
_height = ILI9488_TFTHEIGHT;
break;
case 3:
writedata(MADCTL_MX | MADCTL_MY | MADCTL_MV | MADCTL_BGR);
_width = ILI9488_TFTHEIGHT;
_height = ILI9488_TFTWIDTH;
break;
}
ILI9488_STOP
}
void ILI9488::invertDisplay(boolean i) {
writecommand(i ? ILI9488_INVON : ILI9488_INVOFF);
ILI9488_STOP
}