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Tasmota/tasmota/xdsp_04_ili9341.ino

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/*
xdsp_04_ili9341.ino - Display Tft Ili9341 support for Tasmota
Copyright (C) 2021 Theo Arends and Adafruit
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_ILI9341
#define XDSP_04 4
#define TFT_TOP 16
#define TFT_BOTTOM 16
#define TFT_FONT_WIDTH 6
#define TFT_FONT_HEIGTH 8 // Adafruit minimal font heigth pixels
#include <SPI.h>
#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h> // TFT 320x240 and 480x320
Adafruit_ILI9341 *tft;
uint16_t tft_top = TFT_TOP;
uint16_t tft_bottom = TFT_BOTTOM;
uint16_t tft_scroll = TFT_TOP;
uint16_t tft_cols = 0;
bool tft_init_done = false;
/*********************************************************************************************/
bool Ili9341Header(void) {
if (Settings.display_cols[0] != tft_cols) {
tft_cols = Settings.display_cols[0];
if (tft_cols > 17) {
tft_top = TFT_TOP;
tft_bottom = TFT_BOTTOM;
} else {
tft_top = 0;
tft_bottom = 0;
}
tft_scroll = tft_top;
tft->setScrollMargins(tft_top, tft_bottom);
}
return (tft_cols > 17);
}
void Ili9341InitMode(void) {
tft->setRotation(Settings.display_rotate); // 0
tft->invertDisplay(0);
tft->fillScreen(ILI9341_BLACK);
tft->setTextWrap(false); // Allow text to run off edges
tft->cp437(true);
if (!Settings.display_mode) {
tft->setCursor(0, 0);
tft->setTextColor(ILI9341_WHITE, ILI9341_BLACK);
tft->setTextSize(1);
} else {
Ili9341Header();
tft->setCursor(0, 0);
tft->setTextColor(ILI9341_YELLOW, ILI9341_BLACK);
tft->setTextSize(2);
// tft->println("HEADER");
}
}
void Ili9341Init(uint8_t mode) {
switch(mode) {
case DISPLAY_INIT_MODE:
Ili9341InitMode();
#ifdef USE_DISPLAY_MODES1TO5
if (Settings.display_rotate) {
DisplayClearScreenBuffer();
}
#endif // USE_DISPLAY_MODES1TO5
break;
case DISPLAY_INIT_PARTIAL:
case DISPLAY_INIT_FULL:
break;
}
}
void Ili9341InitDriver(void) {
if (PinUsed(GPIO_ILI9341_CS) && PinUsed(GPIO_ILI9341_DC) && TasmotaGlobal.spi_enabled) {
Settings.display_model = XDSP_04;
if (Settings.display_width != ILI9341_TFTWIDTH) {
Settings.display_width = ILI9341_TFTWIDTH;
}
if (Settings.display_height != ILI9341_TFTHEIGHT) {
Settings.display_height = ILI9341_TFTHEIGHT;
}
tft = new Adafruit_ILI9341(Pin(GPIO_ILI9341_CS), Pin(GPIO_ILI9341_DC));
tft->begin();
#ifdef USE_DISPLAY_MODES1TO5
if (Settings.display_rotate) {
DisplayAllocScreenBuffer();
}
#endif // USE_DISPLAY_MODES1TO5
Ili9341InitMode();
tft_init_done = true;
AddLog(LOG_LEVEL_INFO, PSTR("DSP: ILI9341"));
}
}
void Ili9341Clear(void) {
tft->fillScreen(ILI9341_BLACK);
tft->setCursor(0, 0);
}
void Ili9341DrawStringAt(uint16_t x, uint16_t y, char *str, uint16_t color, uint8_t flag) {
uint16_t active_color = ILI9341_WHITE;
tft->setTextSize(Settings.display_size);
if (!flag) {
tft->setCursor(x, y);
} else {
tft->setCursor((x-1) * TFT_FONT_WIDTH * Settings.display_size, (y-1) * TFT_FONT_HEIGTH * Settings.display_size);
}
if (color) { active_color = color; }
tft->setTextColor(active_color, ILI9341_BLACK);
tft->println(str);
}
void Ili9341DisplayOnOff() {
// tft->showDisplay(disp_power);
// tft->invertDisplay(disp_power);
if (PinUsed(GPIO_BACKLIGHT)) {
pinMode(Pin(GPIO_BACKLIGHT), OUTPUT);
digitalWrite(Pin(GPIO_BACKLIGHT), disp_power);
}
}
/*********************************************************************************************/
#ifdef USE_DISPLAY_MODES1TO5
void Ili9341PrintLog(void) {
disp_refresh--;
if (!disp_refresh) {
disp_refresh = Settings.display_refresh;
if (Settings.display_rotate) {
if (!disp_screen_buffer_cols) { DisplayAllocScreenBuffer(); }
}
char* txt = DisplayLogBuffer('\370');
if (txt != nullptr) {
uint8_t size = Settings.display_size;
uint16_t theight = size * TFT_FONT_HEIGTH;
tft->setTextSize(size);
tft->setTextColor(ILI9341_CYAN, ILI9341_BLACK); // Add background color to solve flicker
if (!Settings.display_rotate) { // Use hardware scroll
tft->setCursor(0, tft_scroll);
tft->fillRect(0, tft_scroll, tft->width(), theight, ILI9341_BLACK); // Erase line
tft->print(txt);
tft_scroll += theight;
if (tft_scroll >= (tft->height() - tft_bottom)) {
tft_scroll = tft_top;
}
tft->scrollTo(tft_scroll);
} else {
uint8_t last_row = Settings.display_rows -1;
tft_scroll = (tft_top) ? theight : 0; // Start below header
tft->setCursor(0, tft_scroll);
for (uint32_t i = 0; i < last_row; i++) {
strlcpy(disp_screen_buffer[i], disp_screen_buffer[i +1], disp_screen_buffer_cols);
// tft->fillRect(0, tft_scroll, tft->width(), theight, ILI9341_BLACK); // Erase line
tft->print(disp_screen_buffer[i]);
tft_scroll += theight;
tft->setCursor(0, tft_scroll);
delay(1); // Fix background runs heap usage due to long runtime of this loop (up to 1 second)
}
strlcpy(disp_screen_buffer[last_row], txt, disp_screen_buffer_cols);
DisplayFillScreen(last_row);
tft->print(disp_screen_buffer[last_row]);
}
AddLog(LOG_LEVEL_DEBUG, PSTR(D_LOG_APPLICATION "[%s]"), txt);
}
}
}
void Ili9341Refresh(void) { // Every second
if (Settings.display_mode) { // Mode 0 is User text
// 24-04-2017 13:45:43 = 19 + 1 ('\0') = 20
// 24-04-2017 13:45 = 16 + 1 ('\0') = 17
if (Ili9341Header()) {
char tftdt[Settings.display_cols[0] +1];
char date4[11]; // 24-04-2017
uint8_t time_size = (Settings.display_cols[0] >= 20) ? 9 : 6; // 13:45:43 or 13:45
char spaces[Settings.display_cols[0] - (8 + time_size)];
char time[time_size]; // 13:45:43
tft->setTextSize(Settings.display_size);
tft->setTextColor(ILI9341_YELLOW, ILI9341_RED); // Add background color to solve flicker
tft->setCursor(0, 0);
snprintf_P(date4, sizeof(date4), PSTR("%02d" D_MONTH_DAY_SEPARATOR "%02d" D_YEAR_MONTH_SEPARATOR "%04d"), RtcTime.day_of_month, RtcTime.month, RtcTime.year);
memset(spaces, 0x20, sizeof(spaces));
spaces[sizeof(spaces) -1] = '\0';
snprintf_P(time, sizeof(time), PSTR("%02d" D_HOUR_MINUTE_SEPARATOR "%02d" D_MINUTE_SECOND_SEPARATOR "%02d"), RtcTime.hour, RtcTime.minute, RtcTime.second);
snprintf_P(tftdt, sizeof(tftdt), PSTR("%s%s%s"), date4, spaces, time);
tft->print(tftdt);
} else {
tft->setCursor(0, 0);
}
switch (Settings.display_mode) {
case 1: // Text
case 2: // Local
case 3: // Local
case 4: // Mqtt
case 5: // Mqtt
Ili9341PrintLog();
break;
}
}
}
#endif // USE_DISPLAY_MODES1TO5
/*********************************************************************************************\
* Interface
\*********************************************************************************************/
bool Xdsp04(uint8_t function) {
bool result = false;
if (FUNC_DISPLAY_INIT_DRIVER == function) {
Ili9341InitDriver();
}
else if (tft_init_done && (XDSP_04 == Settings.display_model)) {
if (!dsp_color) { dsp_color = ILI9341_WHITE; }
switch (function) {
case FUNC_DISPLAY_MODEL:
result = true;
break;
case FUNC_DISPLAY_INIT:
Ili9341Init(dsp_init);
break;
case FUNC_DISPLAY_POWER:
Ili9341DisplayOnOff();
break;
case FUNC_DISPLAY_CLEAR:
Ili9341Clear();
break;
case FUNC_DISPLAY_DRAW_HLINE:
tft->writeFastHLine(dsp_x, dsp_y, dsp_len, dsp_color);
break;
case FUNC_DISPLAY_DRAW_VLINE:
tft->writeFastVLine(dsp_x, dsp_y, dsp_len, dsp_color);
break;
case FUNC_DISPLAY_DRAW_LINE:
tft->writeLine(dsp_x, dsp_y, dsp_x2, dsp_y2, dsp_color);
break;
case FUNC_DISPLAY_DRAW_CIRCLE:
tft->drawCircle(dsp_x, dsp_y, dsp_rad, dsp_color);
break;
case FUNC_DISPLAY_FILL_CIRCLE:
tft->fillCircle(dsp_x, dsp_y, dsp_rad, dsp_color);
break;
case FUNC_DISPLAY_DRAW_RECTANGLE:
tft->drawRect(dsp_x, dsp_y, dsp_x2, dsp_y2, dsp_color);
break;
case FUNC_DISPLAY_FILL_RECTANGLE:
tft->fillRect(dsp_x, dsp_y, dsp_x2, dsp_y2, dsp_color);
break;
// case FUNC_DISPLAY_DRAW_FRAME:
// oled->display();
// break;
case FUNC_DISPLAY_TEXT_SIZE:
tft->setTextSize(Settings.display_size);
break;
case FUNC_DISPLAY_FONT_SIZE:
// tft->setTextSize(Settings.display_font);
break;
case FUNC_DISPLAY_DRAW_STRING:
Ili9341DrawStringAt(dsp_x, dsp_y, dsp_str, dsp_color, dsp_flag);
break;
case FUNC_DISPLAY_ROTATION:
tft->setRotation(Settings.display_rotate);
break;
#ifdef USE_DISPLAY_MODES1TO5
case FUNC_DISPLAY_EVERY_SECOND:
Ili9341Refresh();
break;
#endif // USE_DISPLAY_MODES1TO5
}
}
return result;
}
#endif // USE_DISPLAY_ILI9341
#endif // USE_DISPLAY
#endif // USE_SPI
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