altos: Add ST7565 LCD driver

[fw/altos] / src / drivers / ao_st7565.h

diff --git a/src/drivers/ao_st7565.h b/src/drivers/ao_st7565.h
new file mode 100644 (file)
index 0000000..c3f8f1b
--- /dev/null
+++ b/src/drivers/ao_st7565.h
@@ -0,0 +1,58 @@
+/*
+ * 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>
+
+#define AO_ST7565_DISPLAY_OFF                  0xae
+#define AO_ST7565_DISPLAY_ON                   0xaf
+#define AO_ST7565_DISPLAY_START_LINE_SET(line) (0x40 | (line))
+#define AO_ST7565_PAGE_ADDRESS_SET(page)       (0xb0 | (page))
+#define AO_ST7565_COLUMN_ADDRESS_SET_MSN(nib)  (0x10 | (nib))
+#define AO_ST7565_COLUMN_ADDRESS_SET_LSN(nib)  (0x00 | (nib))
+#define AO_ST7565_ADC_SELECT_NORMAL            0xa0
+#define AO_ST7565_ADC_SELECT_REVERSE           0xa1
+#define AO_ST7565_DISPLAY_NORMAL               0xa6
+#define AO_ST7565_DISPLAY_REVERSE              0xa7
+#define AO_ST7565_DISPLAY_ALL_POINTS_OFF       0xa4
+#define AO_ST7565_DISPLAY_ALL_POINTS_ON                0xa5
+#define AO_ST7565_LCD_BIAS_1_9                 0xa2
+#define AO_ST7565_LCD_BIAS_1_7                 0xa3
+#define AO_ST7565_RMW                          0xe0
+#define AO_ST7565_RMW_END                      0xee
+#define AO_ST7565_RESET                                0xe2
+#define AO_ST7565_COMMON_MODE_NORMAL           0xc0
+#define AO_ST7565_COMMON_MODE_REVERSE          0xc8
+#define AO_ST7565_POWER_CONTROL_SET(pc)                (0x28 | (pc))
+#define AO_ST7565_RESISTOR_RATIO_SET(rr)       (0x20 | (rr))
+#define AO_ST7565_ELECTRONIC_VOLUME_SET                0x81
+#define AO_ST7565_SLEEP_MODE                   0xac
+#define AO_ST7565_BOOSTER_RATIO_SET            0xf8
+#define AO_ST7565_NOP                          0xe3
+
+#define AO_ST7565_SPI_SPEED                    ao_spi_speed(20000000)
+
+void
+ao_st7565_update(struct ao_bitmap *bitmap);
+
+void
+ao_st7565_init(void);
+
+#endif /* _AO_ST7565_H_ */