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Tasmota/tasmota/xdsp_08_ILI9488.ino

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/*
xdsp_08_ILI9488.ino - Display ILI9488 support for Tasmota
Copyright (C) 2020 Theo Arends, Gerhard Mutz
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef USE_SPI
#ifdef USE_DISPLAY
#ifdef USE_DISPLAY_ILI9488
#define XDSP_08 8
#define XI2C_38 38 // See I2CDEVICES.md
#define COLORED 1
#define UNCOLORED 0
// touch panel controller
#define FT6236_address 0x38
// using font 8 is opional (num=3)
// very badly readable, but may be useful for graphs
#define USE_TINY_FONT
#include <ILI9488.h>
#include <FT6236.h>
TouchLocation ili9488_pLoc;
uint8_t ili9488_ctouch_counter = 0;
// currently fixed
#define BACKPLANE_PIN 2
extern uint8_t *buffer;
extern uint8_t color_type;
ILI9488 *ili9488;
#ifdef USE_TOUCH_BUTTONS
extern VButton *buttons[];
#endif
extern const uint16_t picture[];
uint8_t FT6236_found;
/*********************************************************************************************/
void ILI9488_InitDriver()
{
if (!Settings.display_model) {
Settings.display_model = XDSP_08;
}
if (XDSP_08 == Settings.display_model) {
if (Settings.display_width != ILI9488_TFTWIDTH) {
Settings.display_width = ILI9488_TFTWIDTH;
}
if (Settings.display_height != ILI9488_TFTHEIGHT) {
Settings.display_height = ILI9488_TFTHEIGHT;
}
// disable screen buffer
buffer=NULL;
// default colors
fg_color = ILI9488_WHITE;
bg_color = ILI9488_BLACK;
uint8_t bppin=BACKPLANE_PIN;
if (pin[GPIO_BACKLIGHT]<99) {
bppin=pin[GPIO_BACKLIGHT];
}
// init renderer
if ((pin[GPIO_SSPI_CS]<99) && (pin[GPIO_SSPI_MOSI]<99) && (pin[GPIO_SSPI_SCLK]<99)){
ili9488 = new ILI9488(pin[GPIO_SSPI_CS],pin[GPIO_SSPI_MOSI],pin[GPIO_SSPI_SCLK],bppin);
} else {
if ((pin[GPIO_SPI_CS]<99) && (pin[GPIO_SPI_MOSI]<99) && (pin[GPIO_SPI_CLK]<99)) {
ili9488 = new ILI9488(pin[GPIO_SPI_CS],pin[GPIO_SPI_MOSI],pin[GPIO_SPI_CLK],bppin);
} else {
return;
}
}
SPI.begin();
ili9488->begin();
renderer = ili9488;
renderer->DisplayInit(DISPLAY_INIT_MODE,Settings.display_size,Settings.display_rotate,Settings.display_font);
#ifdef SHOW_SPLASH
// Welcome text
renderer->setTextFont(2);
renderer->setTextColor(ILI9488_WHITE,ILI9488_BLACK);
renderer->DrawStringAt(50, 50, "ILI9488 TFT Display!", ILI9488_WHITE,0);
delay(1000);
//renderer->drawRGBBitmap(100,100, picture,51,34);
#endif
color_type = COLOR_COLOR;
// start digitizer with fixed adress
if (I2cEnabled(XI2C_38) && I2cSetDevice(FT6236_address)) {
FT6236begin(FT6236_address);
FT6236_found=1;
} else {
FT6236_found=0;
}
}
}
#ifdef USE_TOUCH_BUTTONS
void ILI9488_MQTT(uint8_t count,const char *cp) {
ResponseTime_P(PSTR(",\"RA8876\":{\"%s%d\":\"%d\"}}"), cp,count+1,(buttons[count]->vpower&0x80)>>7);
MqttPublishTeleSensor();
}
void ILI9488_RDW_BUTT(uint32_t count,uint32_t pwr) {
buttons[count]->xdrawButton(pwr);
if (pwr) buttons[count]->vpower|=0x80;
else buttons[count]->vpower&=0x7f;
}
// check digitizer hit
void FT6236Check() {
uint16_t temp;
uint8_t rbutt=0,vbutt=0;
ili9488_ctouch_counter++;
if (2 == ili9488_ctouch_counter) {
// every 100 ms should be enough
ili9488_ctouch_counter=0;
if (FT6236readTouchLocation(&ili9488_pLoc,1)) {
// did find a hit
if (renderer) {
uint8_t rot=renderer->getRotation();
switch (rot) {
case 0:
temp=ili9488_pLoc.y;
ili9488_pLoc.y=renderer->height()-ili9488_pLoc.x;
ili9488_pLoc.x=temp;
break;
case 1:
break;
case 2:
break;
case 3:
temp=ili9488_pLoc.y;
ili9488_pLoc.y=ili9488_pLoc.x;
ili9488_pLoc.x=renderer->width()-temp;
break;
}
// now must compare with defined buttons
for (uint8_t count=0; count<MAXBUTTONS; count++) {
if (buttons[count]) {
uint8_t bflags=buttons[count]->vpower&0x7f;
if (buttons[count]->contains(ili9488_pLoc.x,ili9488_pLoc.y)) {
// did hit
buttons[count]->press(true);
if (buttons[count]->justPressed()) {
if (!bflags) {
uint8_t pwr=bitRead(power,rbutt);
if (!SendKey(KEY_BUTTON, rbutt+1, POWER_TOGGLE)) {
ExecuteCommandPower(rbutt+1, POWER_TOGGLE, SRC_BUTTON);
ILI9488_RDW_BUTT(count,!pwr);
}
} else {
// virtual button
const char *cp;
if (bflags==1) {
// toggle button
buttons[count]->vpower^=0x80;
cp="TBT";
} else {
// push button
buttons[count]->vpower|=0x80;
cp="PBT";
}
buttons[count]->xdrawButton(buttons[count]->vpower&0x80);
ILI9488_MQTT(count,cp);
}
}
}
if (!bflags) {
rbutt++;
} else {
vbutt++;
}
}
}
}
} else {
// no hit
for (uint8_t count=0; count<MAXBUTTONS; count++) {
if (buttons[count]) {
uint8_t bflags=buttons[count]->vpower&0x7f;
buttons[count]->press(false);
if (buttons[count]->justReleased()) {
uint8_t bflags=buttons[count]->vpower&0x7f;
if (bflags>0) {
if (bflags>1) {
// push button
buttons[count]->vpower&=0x7f;
ILI9488_MQTT(count,"PBT");
}
buttons[count]->xdrawButton(buttons[count]->vpower&0x80);
}
}
if (!bflags) {
// check if power button stage changed
uint8_t pwr=bitRead(power,rbutt);
uint8_t vpwr=(buttons[count]->vpower&0x80)>>7;
if (pwr!=vpwr) {
ILI9488_RDW_BUTT(count,pwr);
}
rbutt++;
}
}
}
ili9488_pLoc.x=0;
ili9488_pLoc.y=0;
}
}
}
#endif // USE_TOUCH_BUTTONS
/*********************************************************************************************/
/*********************************************************************************************\
* Interface
\*********************************************************************************************/
bool Xdsp08(uint8_t function)
{
bool result = false;
if (FUNC_DISPLAY_INIT_DRIVER == function) {
ILI9488_InitDriver();
}
else if (XDSP_08 == Settings.display_model) {
switch (function) {
case FUNC_DISPLAY_MODEL:
result = true;
break;
case FUNC_DISPLAY_EVERY_50_MSECOND:
#ifdef USE_TOUCH_BUTTONS
if (FT6236_found) FT6236Check();
#endif
break;
}
}
//}
return result;
}
#endif // USE_DISPLAY_ILI9488
#endif // USE_DISPLAY
#endif // USE_SPI
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