Add support for 64x32 OLED (#314)

Author: wemos

README.md

@@ -4,7 +4,7 @@
 
 > We just released version 4.0.0. Please have a look at our [upgrade guide](UPGRADE-4.0.md)
 
-This is a driver for SSD1306 128x64 and 128x32 OLED displays running on the Arduino/ESP8266 & ESP32 and mbed-os platforms.
+This is a driver for SSD1306 128x64, 128x32, 64x48 and 64x32 OLED displays running on the Arduino/ESP8266 & ESP32 and mbed-os platforms.
 Can be used with either the I2C or SPI version of the display.
 
 You can either download this library as a zip file and unpack it to your Arduino/libraries folder or find it in the Arduino library manager under "ESP8266 and ESP32 Oled Driver for SSD1306 display". For mbed-os a copy of the files are available as an mbed-os library. 

src/OLEDDisplay.cpp

@@ -859,6 +859,10 @@ void OLEDDisplay::setGeometry(OLEDDISPLAY_GEOMETRY g, uint16_t width, uint16_t h
       this->displayWidth = 64;
       this->displayHeight = 48;
       break;
+    case GEOMETRY_64_32:
+      this->displayWidth = 64;
+      this->displayHeight = 32;
+      break;
     case GEOMETRY_RAWMODE:
       this->displayWidth = width > 0 ? width : 128;
       this->displayHeight = height > 0 ? height : 64;
@@ -877,7 +881,10 @@ void OLEDDisplay::sendInitCommands(void) {
   sendCommand(this->height() - 1);
   sendCommand(SETDISPLAYOFFSET);
   sendCommand(0x00);
-  sendCommand(SETSTARTLINE);
+  if(geometry == GEOMETRY_64_32)
+    sendCommand(0x00);  
+  else
+    sendCommand(SETSTARTLINE);
   sendCommand(CHARGEPUMP);
   sendCommand(0x14);
   sendCommand(MEMORYMODE);
@@ -886,15 +893,15 @@ void OLEDDisplay::sendInitCommands(void) {
   sendCommand(COMSCANINC);
   sendCommand(SETCOMPINS);
 
-  if (geometry == GEOMETRY_128_64 || geometry == GEOMETRY_64_48) {
+  if (geometry == GEOMETRY_128_64 || geometry == GEOMETRY_64_48 || geometry == GEOMETRY_64_32) {
     sendCommand(0x12);
   } else if (geometry == GEOMETRY_128_32) {
     sendCommand(0x02);
   }
 
   sendCommand(SETCONTRAST);
 
-  if (geometry == GEOMETRY_128_64 || geometry == GEOMETRY_64_48) {
+  if (geometry == GEOMETRY_128_64 || geometry == GEOMETRY_64_48 || geometry == GEOMETRY_64_32) {
     sendCommand(0xCF);
   } else if (geometry == GEOMETRY_128_32) {
     sendCommand(0x8F);

src/OLEDDisplay.h

@@ -139,6 +139,7 @@ enum OLEDDISPLAY_GEOMETRY {
   GEOMETRY_128_64   = 0,
   GEOMETRY_128_32   = 1,
   GEOMETRY_64_48    = 2,
+  GEOMETRY_64_32    = 3,
   GEOMETRY_RAWMODE  = 4
 };
 

src/SSD1306Spi.h

@@ -130,7 +130,7 @@ class SSD1306Spi : public OLEDDisplay {
        sendCommand(PAGEADDR);
        sendCommand(0x0);
 
-       if (geometry == GEOMETRY_128_64 || geometry == GEOMETRY_64_48) {
+       if (geometry == GEOMETRY_128_64 || geometry == GEOMETRY_64_48 || geometry == GEOMETRY_64_32 ) {
          sendCommand(0x7);
        } else if (geometry == GEOMETRY_128_32) {
          sendCommand(0x3);