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diff --git a/src/drivers/ao_st7565.h b/src/drivers/ao_st7565.h
new file mode 100644
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+++ b/src/drivers/ao_st7565.h
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+/*
+ * Copyright © 2023 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#ifndef _AO_ST7565_H_
+#define _AO_ST7565_H_
+
+#include <ao_draw.h>
+
+/*
+ * Wiring the NewHaven NHD-C12864LZ-FSW-FBW-3V3 display
+ *
+ * PIN	Symbol	Connection
+ *  1	/CS1	Chip select. Active low.
+ *  2	/RES	Reset. Active low.
+ *  3	A0	Register select. 0: instruction, 1: data
+ *  4	/WR	NC
+ *  5	/RD	NC
+ *  6	DB0	NC
+ *  7	DB1	NC
+ *  8	DB2	NC
+ *  8	DB3	NC
+ *  10	DB4	NC
+ *  11	DB5	NC
+ *  12	DB6	SPI clock. Mode 3 (idle high, rising edge)
+ *  13	DB7	SPI data.
+ *  14	Vdd	+3.3V
+ *  15	Vss	Ground
+ *  16	Vout	1uF to ground
+ *  17  CAP3+	1uF to CAP1-
+ *  18	CAP1-	1uF to CAP3+ and CAP1+
+ *  19	CAP1+	1uF to CAP1-
+ *  20	CAP2+	1uF to CAP2-
+ *  21	CAP2-	1uF to CAP2+
+ *  22	V4	1uF to ground
+ *  23	V3	1uF to ground
+ *  24	V2	1uF to ground
+ *  25	V1	1uF to ground
+ *  26	V0	1uF to ground
+ *  27	C86	MPU select. Ground
+ *  28	PS	Parallel/serial select. Ground
+ */
+
+#define ST7565_DISPLAY_OFF			0xae
+#define ST7565_DISPLAY_ON			0xaf
+#define ST7565_DISPLAY_START_LINE_SET(line)	(0x40 | (line))
+#define ST7565_PAGE_ADDRESS_SET(page)		(0xb0 | (page))
+#define ST7565_COLUMN_ADDRESS_SET_MSN(nib)	(0x10 | (nib))
+#define ST7565_COLUMN_ADDRESS_SET_LSN(nib)	(0x00 | (nib))
+#define ST7565_ADC_SELECT_NORMAL		0xa0
+#define ST7565_ADC_SELECT_REVERSE		0xa1
+#define ST7565_DISPLAY_NORMAL			0xa6
+#define ST7565_DISPLAY_REVERSE			0xa7
+#define ST7565_DISPLAY_ALL_POINTS_OFF		0xa4
+#define ST7565_DISPLAY_ALL_POINTS_ON		0xa5
+#define ST7565_LCD_BIAS_1_9			0xa2
+#define ST7565_LCD_BIAS_1_7			0xa3
+#define ST7565_RMW				0xe0
+#define ST7565_RMW_END				0xee
+#define ST7565_RESET				0xe2
+#define ST7565_COMMON_MODE_NORMAL		0xc0
+#define ST7565_COMMON_MODE_REVERSE		0xc8
+#define ST7565_POWER_CONTROL_SET(pc)		(0x28 | (pc))
+#define ST7565_RESISTOR_RATIO_SET(rr)		(0x20 | (rr))
+#define ST7565_ELECTRONIC_VOLUME_SET		0x81
+#define ST7565_SLEEP_MODE			0xac
+#define ST7565_BOOSTER_RATIO_SET		0xf8
+#define ST7565_NOP				0xe3
+
+/* Max 50ns SPI clock time */
+#define AO_ST7565_SPI_SPEED			ao_spi_speed(AO_ST7565_SPI_BUS, 20000000)
+
+void
+ao_st7565_update(struct ao_bitmap *bitmap);
+
+void
+ao_st7565_set_brightness(uint8_t val);
+
+uint8_t
+ao_st7565_get_brightness(void);
+
+void
+ao_st7565_init(void);
+
+#endif /* _AO_ST7565_H_ */