add ST7796 support (LovyanGFX)

README.md

@@ -31,6 +31,7 @@ Video:
 ##### Supported Displays #####
  - ILI9341 [library](https://github.com/Links2004/Adafruit_ILI9341)
  - ST7789 [library](https://github.com/Bodmer/TFT_eSPI)
+ - ST7796 [library](https://github.com/lovyan03/LovyanGFX)
 
 more possible using ```VNCdisplay``` Interface
 

examples/VNC_ST7796_LovyanGFX/LovyanGFX_VNCDriver.cpp

@@ -0,0 +1,65 @@
+#include "LovyanGFX_VNCDriver.h"
+
+VNCDriver::VNCDriver(LGFX *lgfx) {
+  _lcd = lgfx;
+  _lcd->setRotation(1);
+  _lcd->setBrightness(255);
+  _lcd->fillScreen(TFT_BLACK);
+}
+
+VNCDriver::~VNCDriver() {
+  delete _lcd;
+}
+
+bool VNCDriver::hasCopyRect(void) {
+  return false;
+}
+
+uint32_t VNCDriver::getHeight(void) {
+  return _lcd->height();
+}
+
+uint32_t VNCDriver::getWidth(void) {
+  return _lcd->width();
+}
+
+void VNCDriver::draw_area(uint32_t x, uint32_t y, uint32_t w, uint32_t h, uint8_t *data) {
+  _lcd->pushImage(x, y, w, h, (uint16_t *)data);
+}
+
+void VNCDriver::draw_rect(uint32_t x, uint32_t y, uint32_t w, uint32_t h, uint16_t color) {
+  _lcd->fillRect(x, y, w, h, ((((color)&0xff) << 8) | (((color) >> 8))));
+}
+
+void VNCDriver::copy_rect(uint32_t src_x, uint32_t src_y, uint32_t dest_x, uint32_t dest_y, uint32_t w, uint32_t h) {
+}
+
+void VNCDriver::area_update_start(uint32_t x, uint32_t y, uint32_t w, uint32_t h) {
+  _lcd->setAddrWindow(x, y, w, h);
+}
+
+void VNCDriver::area_update_data(char *data, uint32_t pixel) {
+  _lcd->pushPixels((uint16_t *)data, pixel);
+}
+
+void VNCDriver::area_update_end(void) {
+  _lcd->endWrite();
+}
+
+void VNCDriver::vnc_options_override(dfb_vnc_options *opt) {
+  opt->client.bigendian = 1;
+}
+
+void VNCDriver::print_screen(String title, String msg, int color) {
+  _lcd->fillScreen(TFT_BLACK);
+  _lcd->setCursor(0, _lcd->height() / 3);
+  _lcd->setTextColor(color);
+  _lcd->setTextSize(5);
+  _lcd->println(title);
+  _lcd->setTextSize(3);
+  _lcd->println(msg);
+}
+
+void VNCDriver::print(String text) {
+  _lcd->print(text);
+}

examples/VNC_ST7796_LovyanGFX/LovyanGFX_VNCDriver.h

@@ -0,0 +1,109 @@
+#pragma once
+#include "VNC_config.h"
+#include "VNC.h"
+#define LGFX_USE_V1
+#include <LovyanGFX.hpp>
+
+class LGFX : public lgfx::LGFX_Device {
+  lgfx::Panel_ST7796 _panel_instance;
+  lgfx::Bus_SPI _bus_instance;
+  lgfx::Light_PWM _light_instance;
+  lgfx::Touch_FT5x06 _touch_instance;
+
+public:
+  LGFX(void) {
+    {
+      auto cfg = _bus_instance.config();
+      cfg.spi_host = HSPI_HOST;
+      cfg.spi_mode = 0;
+      cfg.freq_write = 80000000;
+      cfg.freq_read = 16000000;
+      cfg.spi_3wire = false;
+      cfg.use_lock = true;
+      cfg.dma_channel = 1;
+      cfg.pin_sclk = 14;
+      cfg.pin_mosi = 13;
+      cfg.pin_miso = 12;
+      cfg.pin_dc = 21;
+      _bus_instance.config(cfg);
+      _panel_instance.setBus(&_bus_instance);
+    }
+
+    {
+      auto cfg = _panel_instance.config();
+      cfg.pin_cs = 15;
+      cfg.pin_rst = 22;
+      cfg.pin_busy = -1;
+      cfg.memory_width = 320;
+      cfg.memory_height = 480;
+      cfg.panel_width = 320;
+      cfg.panel_height = 480;
+      cfg.offset_x = 0;
+      cfg.offset_y = 0;
+      cfg.offset_rotation = 0;
+      cfg.dummy_read_pixel = 8;
+      cfg.dummy_read_bits = 1;
+      cfg.readable = true;
+      cfg.invert = false;
+      cfg.rgb_order = false;
+      cfg.dlen_16bit = false;
+      cfg.bus_shared = true;
+
+      _panel_instance.config(cfg);
+    }
+
+    {
+      auto cfg = _light_instance.config();
+      cfg.pin_bl = 23;
+      cfg.invert = false;
+      cfg.freq = 44100;
+      cfg.pwm_channel = 7;
+
+      _light_instance.config(cfg);
+      _panel_instance.setLight(&_light_instance);
+    }
+
+    {
+      auto cfg = _touch_instance.config();
+
+      cfg.i2c_port = 1;
+      cfg.i2c_addr = 0x38;
+      cfg.pin_sda = 18;
+      cfg.pin_scl = 19;
+      cfg.freq = 400000;
+      cfg.x_min = 0;
+      cfg.x_max = 320;
+      cfg.y_min = 0;
+      cfg.y_max = 480;
+
+      _touch_instance.config(cfg);
+      _panel_instance.setTouch(&_touch_instance);
+    }
+
+    setPanel(&_panel_instance);
+  }
+};
+
+class VNCDriver : public VNCdisplay {
+public:
+
+  VNCDriver(LGFX* lgfx);
+  ~VNCDriver();
+
+  bool hasCopyRect(void);
+  uint32_t getHeight(void);
+  uint32_t getWidth(void);
+  void draw_area(uint32_t x, uint32_t y, uint32_t w, uint32_t h, uint8_t* data);
+  void draw_rect(uint32_t x, uint32_t y, uint32_t w, uint32_t h, uint16_t color);
+  void copy_rect(uint32_t src_x, uint32_t src_y, uint32_t dest_x, uint32_t dest_y, uint32_t w, uint32_t h);
+  void area_update_start(uint32_t x, uint32_t y, uint32_t w, uint32_t h);
+  void area_update_data(char* data, uint32_t pixel);
+  void area_update_end(void);
+
+  void vnc_options_override(dfb_vnc_options* opt);
+  void print_screen(String title, String msg, int color);
+  void print(String text);
+
+private:
+  LGFX* _lcd;
+};

examples/VNC_ST7796_LovyanGFX/VNC_ST7796_LovyanGFX.ino

@@ -0,0 +1,108 @@
+/*
+ * VNC_ST7796_LovyanGFX.ino
+ *
+ *  Created on: 10.15.2022
+ *  Created by Eric Nam(https://github.com/0015)
+ *
+ * required librarys:
+ *  - SPI (arduino core)
+ *  - WiFi (arduino core)
+ *  - arduinoVNC (https://github.com/Links2004/arduinoVNC)
+ *  - LovyanGFX (https://github.com/lovyan03/LovyanGFX)
+ */
+
+#include <Arduino.h>
+#include <WiFi.h>
+#include <VNC.h>
+#include "LovyanGFX_VNCDriver.h"
+
+const char* vnc_ip = "192.168.1.12";
+const uint16_t vnc_port = 5900;
+const char* vnc_pass = "12345678";
+
+const char* ssid = "your-ssid";
+const char* password = "your-password";
+
+
+int touch_x = 0;
+int touch_y = 0;
+bool hadTouchEvent = false;
+
+LGFX _lgfx;
+VNCDriver* lcd = new VNCDriver(&_lgfx);
+arduinoVNC vnc = arduinoVNC(lcd);
+
+void setup(void) {
+
+  Serial.begin(115200);
+  _lgfx.init();
+
+  Serial.print("Connecting to ");
+  Serial.println(ssid);
+
+  lcd->print_screen("Connecting to ", ssid, TFT_YELLOW);
+
+  WiFi.begin(ssid, password);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+    lcd->print(".");
+  }
+  Serial.println("");
+  Serial.println("WiFi connected");
+  Serial.println("IP address: ");
+  Serial.println(WiFi.localIP());
+
+  lcd->print_screen("WiFi connected!", WiFi.localIP().toString(), TFT_GREEN);
+  Serial.println(F("[SETUP] VNC..."));
+
+  vnc.begin(vnc_ip, vnc_port);
+  vnc.setPassword(vnc_pass);  // check for vnc server settings
+
+  xTaskCreatePinnedToCore(vnc_task,
+                          "vnc_task",
+                          10000,
+                          NULL,
+                          1,
+                          NULL,
+                          0);
+}
+
+void loop() {}
+
+void vnc_task(void* pvParameters) {
+  while (1) {
+    if (WiFi.status() != WL_CONNECTED) {
+      lcd->print_screen("WiFi Disconnected!", "Check your WiFi", TFT_RED);
+      vnc.reconnect();
+      vTaskDelay(100);
+    } else {
+      vnc.loop();
+      if (!vnc.connected()) {
+        lcd->print_screen("Connecting VNC", getVNCAddr(), TFT_GREEN);
+        vTaskDelay(5000);
+      } else {
+        touchEvent();
+      }
+    }
+    vTaskDelay(1);
+  }
+}
+
+void touchEvent() {
+  uint16_t x, y;
+  if (_lgfx.getTouch(&x, &y)) {
+    hadTouchEvent = true;
+    touch_x = x;
+    touch_y = y;
+    vnc.mouseEvent(touch_x, touch_y, 0b001);
+
+  } else if (hadTouchEvent) {
+    hadTouchEvent = false;
+    vnc.mouseEvent(touch_x, touch_y, 0b000);
+  }
+}
+
+String getVNCAddr() {
+  return String(vnc_ip) + String(":") + String(vnc_port);
+}

library.json

@@ -20,6 +20,6 @@
       "tests"
     ]
   },
-  "version": "1.4",
+  "version": "1.5",
   "license": "GPL-2.0-or-later"
 }

library.properties

@@ -1,5 +1,5 @@
 name=arduinoVNC
-version=1.4
+version=1.5
 author=Markus Sattler
 maintainer=Markus Sattler
 sentence=VNC Client for Arduino