1 files changed, 78 insertions, 0 deletions
diff --git a/include/driver/ssd1306.h b/include/driver/ssd1306.h
new file mode 100644
index 0000000..4a2cf01
--- /dev/null
+++ b/include/driver/ssd1306.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2021 Daniel Friesel
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#ifndef SSD1306_H
+#define SSD1306_H
+
+#define SSD1306_SET_CONTRAST 0x81
+#define SSD1306_SET_ENTIRE_ON 0xa4
+#define SSD1306_SET_NORM_INV 0xa6
+#define SSD1306_SET_DISP 0xae
+#define SSD1306_SET_MEM_ADDR 0x20
+#define SSD1306_SET_COL_ADDR 0x21
+#define SSD1306_SET_PAGE_ADDR 0x22
+#define SSD1306_SET_DISP_START_LINE 0x40
+#define SSD1306_SET_SEG_REMAP 0xa0
+#define SSD1306_SET_MUX_RATIO 0xa8
+#define SSD1306_SET_COM_OUT_DIR 0xc0
+#define SSD1306_SET_DISP_OFFSET 0xd3
+#define SSD1306_SET_COM_PIN_CFG 0xda
+#define SSD1306_SET_DISP_CLK_DIV 0xd5
+#define SSD1306_SET_PRECHARGE 0xd9
+#define SSD1306_SET_VCOM_DESEL 0xdb
+#define SSD1306_SET_CHARGE_PUMP 0x8d
+
+#include <stdint.h>
+#include <stddef.h>
+
+class SSD1306 {
+	private:
+		const uint8_t width = SSD1306_WIDTH;
+		const uint8_t height = SSD1306_HEIGHT;
+		SSD1306(const SSD1306 &copy);
+
+		unsigned char const address = 0x3c;
+
+		unsigned char txbuf[130];
+		unsigned char rxbuf[2];
+
+		const unsigned char init1[6] = {
+			SSD1306_SET_DISP | 0x00,
+			SSD1306_SET_MEM_ADDR, 0x00,
+			SSD1306_SET_DISP_START_LINE | 0x00,
+			SSD1306_SET_SEG_REMAP | 0x01,
+			SSD1306_SET_MUX_RATIO
+		};
+		// height
+		const unsigned char init2[4] = {
+			SSD1306_SET_COM_OUT_DIR | 0x08,
+			SSD1306_SET_DISP_OFFSET, 0x00,
+			SSD1306_SET_COM_PIN_CFG
+		};
+		// height == 32? 0x02 : 0x12
+		const unsigned char init3[13] = {
+			SSD1306_SET_DISP_CLK_DIV, 0x80,
+			SSD1306_SET_PRECHARGE, 0xf1,
+			SSD1306_SET_VCOM_DESEL, 0x30,
+			SSD1306_SET_CONTRAST, 0xff,
+			SSD1306_SET_ENTIRE_ON,
+			SSD1306_SET_NORM_INV,
+			SSD1306_SET_CHARGE_PUMP, 0x14,
+			SSD1306_SET_DISP | 0x01
+		};
+
+		void writeCommand(uint8_t command);
+		void writeData(unsigned char* data);
+
+	public:
+		SSD1306() {}
+
+		void init();
+		void showImage(unsigned char* data, uint16_t length);
+};
+
+extern SSD1306 ssd1306;
+
+#endif