Heltec Wireless Tracker support

src/helpers/ui/ST7735Display.cpp

@@ -0,0 +1,125 @@
+#ifdef ST7735
+
+#include "ST7735Display.h"
+
+#ifndef DISPLAY_ROTATION
+  #define DISPLAY_ROTATION 2
+#endif
+
+
+bool ST7735Display::i2c_probe(TwoWire& wire, uint8_t addr) {
+  return true;
+/*
+  wire.beginTransmission(addr);
+  uint8_t error = wire.endTransmission();
+  return (error == 0);
+*/
+}
+
+bool ST7735Display::begin() {
+  if(!_isOn) {
+    pinMode(PIN_TFT_VDD_CTL, OUTPUT);
+    pinMode(PIN_TFT_LEDA_CTL, OUTPUT);
+    digitalWrite(PIN_TFT_VDD_CTL, HIGH);
+    digitalWrite(PIN_TFT_LEDA_CTL, HIGH);
+    digitalWrite(PIN_TFT_RST, HIGH);
+
+    display.initR(INITR_MINI160x80_PLUGIN);
+    display.setRotation(DISPLAY_ROTATION);
+    display.setSPISpeed(40000000);
+    display.fillScreen(ST77XX_BLACK);
+    display.setTextColor(ST77XX_WHITE);
+    display.setTextSize(2); 
+    display.cp437(true);         // Use full 256 char 'Code Page 437' font
+  
+    _isOn = true;
+  }
+  return true;
+}
+
+void ST7735Display::turnOn() {
+
+  ST7735Display::begin();
+
+}
+
+void ST7735Display::turnOff() {
+  digitalWrite(PIN_TFT_VDD_CTL, HIGH);
+  digitalWrite(PIN_TFT_LEDA_CTL, HIGH);
+  digitalWrite(PIN_TFT_RST, LOW);
+  digitalWrite(PIN_TFT_VDD_CTL, LOW);
+  digitalWrite(PIN_TFT_LEDA_CTL, LOW);
+  _isOn = false;
+}
+
+void ST7735Display::clear() {
+  //Serial.println("DBG: display.Clear");
+  display.fillScreen(ST77XX_BLACK);
+}
+
+void ST7735Display::startFrame(Color bkg) {
+  display.fillScreen(0x00);
+  display.setTextColor(ST77XX_WHITE);
+  display.setTextSize(1);      // This one affects size of Please wait... message
+  display.cp437(true);         // Use full 256 char 'Code Page 437' font
+}
+
+void ST7735Display::setTextSize(int sz) {
+  display.setTextSize(sz);
+}
+
+void ST7735Display::setColor(Color c) {
+  switch (c) {
+    case DisplayDriver::DARK :
+      _color = ST77XX_BLACK;
+      break;
+    case DisplayDriver::LIGHT : 
+      _color = ST77XX_WHITE;
+      break;
+    case DisplayDriver::RED : 
+      _color = ST77XX_RED;
+      break;
+    case DisplayDriver::GREEN : 
+      _color = ST77XX_GREEN;
+      break;
+    case DisplayDriver::BLUE : 
+      _color = ST77XX_BLUE;
+      break;
+    case DisplayDriver::YELLOW : 
+      _color = ST77XX_YELLOW;
+      break;
+    case DisplayDriver::ORANGE : 
+      _color = ST77XX_ORANGE;
+      break;
+    default:
+      _color = ST77XX_WHITE;
+      break;
+  }
+  display.setTextColor(_color);
+}
+
+void ST7735Display::setCursor(int x, int y) {
+  display.setCursor(x, y);
+}
+
+void ST7735Display::print(const char* str) {
+  display.print(str);
+}
+
+void ST7735Display::fillRect(int x, int y, int w, int h) {
+  display.fillRect(x, y, w, h, _color);
+}
+
+void ST7735Display::drawRect(int x, int y, int w, int h) {
+  display.drawRect(x, y, w, h, _color);
+}
+
+void ST7735Display::drawXbm(int x, int y, const uint8_t* bits, int w, int h) {
+  display.drawBitmap(x, y, bits, w, h, _color);
+}
+
+void ST7735Display::endFrame() {
+  // display.display();
+}
+
+#endif

src/helpers/ui/ST7735Display.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include "DisplayDriver.h"
+#include <Wire.h>
+#include <SPI.h>
+#include <Adafruit_GFX.h>
+#include <Adafruit_ST7735.h>
+
+class ST7735Display : public DisplayDriver {
+  Adafruit_ST7735 display;
+  bool _isOn;
+  uint16_t _color;
+
+  bool i2c_probe(TwoWire& wire, uint8_t addr);
+public:
+#ifdef USE_PIN_TFT
+  ST7735Display() : DisplayDriver(80, 160), display(PIN_TFT_CS, PIN_TFT_DC, PIN_TFT_SDA, PIN_TFT_SCL, PIN_TFT_RST) { _isOn = false; }
+#else
+  ST7735Display() : DisplayDriver(80, 160), display(&SPI1, PIN_TFT_CS, PIN_TFT_DC, PIN_TFT_RST) { _isOn = false; }
+#endif
+  bool begin();
+
+  bool isOn() override { return _isOn; }
+  void turnOn() override;
+  void turnOff() override;
+  void clear() override;
+  void startFrame(Color bkg = DARK) override;
+  void setTextSize(int sz) override;
+  void setColor(Color c) override;
+  void setCursor(int x, int y) override;
+  void print(const char* str) override;
+  void fillRect(int x, int y, int w, int h) override;
+  void drawRect(int x, int y, int w, int h) override;
+  void drawXbm(int x, int y, const uint8_t* bits, int w, int h) override;
+  void endFrame() override;
+};