X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fdrivers%2Fao_st7565.h;h=b5627f3be24cf8340c949ddf19fc8f78b56eb54f;hb=bb3bfea5462d3f3e1a0a5f4645f67996054a78a3;hp=e1340f8ac819d7d47689d816df24ee7dd2423169;hpb=6f7d530b9ca06272354d1b7c05813a2523b24887;p=fw%2Faltos

diff --git a/src/drivers/ao_st7565.h b/src/drivers/ao_st7565.h
index e1340f8a..b5627f3b 100644
--- a/src/drivers/ao_st7565.h
+++ b/src/drivers/ao_st7565.h
@@ -21,6 +21,40 @@
 
 #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))
@@ -47,11 +81,18 @@
 #define ST7565_BOOSTER_RATIO_SET		0xf8
 #define ST7565_NOP				0xe3
 
-#define AO_ST7565_SPI_SPEED			ao_spi_speed(20000000)
+/* 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);