Add pin configuration

README.md

@@ -2,6 +2,59 @@
 
 Built and tested with OrangePi Zero and ST7735 128x160 v1.1 SPI display.
 
+## Hardware Connections
+
+```
+ +-------------+-----------+
+ | LCD pin     | OPi GPIO  |
+ +-------------+-----------+
+ | LED         | 17  3.3V  |
+ | SCK  / SCLK | 23  SCLK  |
+ | SDA  / MOSI | 19  MOSI  |
+ | A0   / D/C  | 13        |
+ | RESET / RST | 15        |
+ | CS          | 24  CE.1  |
+ | GND         |  9  GND   |
+ | VCC         |  1  3.3V  |
+ +-------------+-----------+
+```
+
+### GPIO Pins Reference
+```
+$ gpio readall
+ +------+-----+----------+------+---+  OPi H2  +---+------+----------+-----+------+
+ | GPIO | wPi |   Name   | Mode | V | Physical | V | Mode | Name     | wPi | GPIO |
+ +------+-----+----------+------+---+----++----+---+------+----------+-----+------+
+ |      |     |     3.3V |      |   |  1 || 2  |   |      | 5V       |     |      |
+ |   12 |   0 |    SDA.0 |  OFF | 0 |  3 || 4  |   |      | 5V       |     |      |
+ |   11 |   1 |    SCL.0 |  OFF | 0 |  5 || 6  |   |      | GND      |     |      |
+ |    6 |   2 |    PWM.1 |  OFF | 0 |  7 || 8  | 0 | OFF  | TXD.1    | 3   | 198  |
+ |      |     |      GND |      |   |  9 || 10 | 0 | OFF  | RXD.1    | 4   | 199  |
+ |    1 |   5 |    RXD.2 |  OFF | 0 | 11 || 12 | 0 | OFF  | PA07     | 6   | 7    |
+ |    0 |   7 |    TXD.2 |  OUT | 1 | 13 || 14 |   |      | GND      |     |      |
+ |    3 |   8 |    CTS.2 |  OUT | 1 | 15 || 16 | 0 | OFF  | SDA.1    | 9   | 19   |
+ |      |     |     3.3V |      |   | 17 || 18 | 0 | OFF  | SCK.1    | 10  | 18   |
+ |   15 |  11 |   MOSI.1 | ALT2 | 0 | 19 || 20 |   |      | GND      |     |      |
+ |   16 |  12 |   MISO.1 | ALT2 | 0 | 21 || 22 | 0 | OFF  | RTS.2    | 13  | 2    |
+ |   14 |  14 |   SCLK.1 | ALT2 | 0 | 23 || 24 | 0 | ALT2 | CE.1     | 15  | 13   |
+ |      |     |      GND |      |   | 25 || 26 | 0 | OFF  | PA10     | 16  | 10   |
+ +------+-----+----------+------+---+----++----+---+------+----------+-----+------+
+ | GPIO | wPi |   Name   | Mode | V | Physical | V | Mode | Name     | wPi | GPIO |
+ +------+-----+----------+------+---+  OPi H2  +---+------+----------+-----+------+
+```
+
+## Building
+
+```
+meson build
+ninja -C build
+```
+
+## Running
+TODO
+ 
 ## Resources
 * [https://github.com/orangepi-xunlong/WiringOP](orangepi-xunlong/WiringOP) - GPIO controlling library compatible with Raspberry Pi's WiringPi
 * [https://github.com/dhepper/font8x8](dhepper/font8x8) - 8x8 pixels monospaced font
+* [https://github.com/vadzimyatskevich/SSD1306](vadzimyatskevich/SSD1306) - Similar driver for SSD1306 OLED displays
+

demo/base.c

@@ -11,6 +11,8 @@ inline uint8 random_color_r(int seed) { return seed % (256 / 7) * 7; }
 inline uint8 random_color_g(int seed) { return seed % (256 / 13) * 13; }
 inline uint8 random_color_b(int seed) { return seed % (256 / 23) * 23; }
 
+extern void lcd_setOrientation(lcd_t*, int);
+
 lcd_t* demo_init()
 {
 	setbuf(stdout, NULL);
@@ -18,7 +20,11 @@ lcd_t* demo_init()
 
 	wiringPiSetup();
 
-	return lcd_init(40000000, 1, 10, 7, 8);
+	lcd_t* lcd = lcd_init(40000000, 1, 15, 7, 8);
+	
+	lcd_setOrientation(lcd, 2);
+
+	return lcd;
 }
 
 void demo_deinit(lcd_t* lcd)