Added DOGM128 LCD display example (SPI).

2010-05-02 14:44:31 +02:00
parent 4ae25c865b
commit a104b63ea9
7 changed files with 704 additions and 2 deletions
--- a/examples/other/Makefile
+++ b/examples/other/Makefile
@@ -24,7 +24,7 @@ Q := @
 MAKEFLAGS += --no-print-directory
 endif

-all: i2c_stts75_sensor adc_temperature_sensor dma_mem2mem timer_interrupt systick
+all: i2c_stts75_sensor adc_temperature_sensor dma_mem2mem timer_interrupt systick dogm128

 i2c_stts75_sensor:
 	@printf "  BUILD   examples/other/i2c_stts75_sensor\n"
@@ -46,6 +46,10 @@ systick:
 	@printf "  BUILD   examples/other/systick\n"
 	$(Q)$(MAKE) -C systick

+dogm128:
+	@printf "  BUILD   examples/other/dogm128\n"
+	$(Q)$(MAKE) -C dogm128
+
 clean:
 	@printf "  CLEAN   examples/other/i2c_stts75_sensor\n"
 	$(Q)$(MAKE) -C i2c_stts75_sensor clean
@@ -57,6 +61,8 @@ clean:
 	$(Q)$(MAKE) -C timer_interrupt clean
 	@printf "  CLEAN   examples/other/systick\n"
 	$(Q)$(MAKE) -C systick clean
+	@printf "  CLEAN   examples/other/dogm128\n"
+	$(Q)$(MAKE) -C dogm128 clean

-.PHONY: i2c_stts75_sensor adc_temperature_sensor dma_mem2mem timer_interrupt systick clean
+.PHONY: i2c_stts75_sensor adc_temperature_sensor dma_mem2mem timer_interrupt systick dogm128 clean

--- a/examples/other/dogm128/Makefile
+++ b/examples/other/dogm128/Makefile
@@ -0,0 +1,95 @@
+##
+## This file is part of the libopenstm32 project.
+##
+## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+##
+## 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 3 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, see <http://www.gnu.org/licenses/>.
+##
+
+BINARY		= main
+
+# PREFIX	?= arm-none-eabi
+PREFIX		?= arm-elf
+CC		= $(PREFIX)-gcc
+LD		= $(PREFIX)-ld
+OBJCOPY		= $(PREFIX)-objcopy
+OBJDUMP		= $(PREFIX)-objdump
+# Uncomment this line if you want to use the installed (not local) library.
+#TOOLCHAIN_DIR = `dirname \`which $(CC)\``/..
+TOOLCHAIN_DIR   = ../../..
+CFLAGS		= -O0 -g -Wall -Wextra -I$(TOOLCHAIN_DIR)/include -fno-common \
+		  -mcpu=cortex-m3 -mthumb
+LDSCRIPT	= $(BINARY).ld
+LDFLAGS         = -L$(TOOLCHAIN_DIR)/lib -T$(LDSCRIPT) -nostartfiles
+OBJS		= $(BINARY).o dogm128.o
+
+OPENOCD_BASE	= /usr
+OPENOCD		= $(OPENOCD_BASE)/bin/openocd
+OPENOCD_SCRIPTS	= $(OPENOCD_BASE)/share/openocd/scripts
+OPENOCD_FLASHER	= $(OPENOCD_SCRIPTS)/interface/jtagkey.cfg
+OPENOCD_BOARD	= $(OPENOCD_SCRIPTS)/target/stm32.cfg
+
+# Be silent per default, but 'make V=1' will show all compiler calls.
+ifneq ($(V),1)
+Q := @
+NULL := 2>/dev/null
+endif
+
+all: images
+
+images: $(BINARY)
+	@printf "  OBJCOPY $(BINARY).bin\n"
+	$(Q)$(OBJCOPY) -Obinary $(BINARY) $(BINARY).bin
+	@printf "  OBJCOPY $(BINARY).hex\n"
+	$(Q)$(OBJCOPY) -Oihex $(BINARY) $(BINARY).hex
+	@printf "  OBJCOPY $(BINARY).srec\n"
+	$(Q)$(OBJCOPY) -Osrec $(BINARY) $(BINARY).srec
+	@printf "  OBJDUMP $(BINARY).list\n"
+	$(Q)$(OBJDUMP) -S $(BINARY) > $(BINARY).list
+
+$(BINARY): $(OBJS) $(LDSCRIPT)
+	@printf "  LD      $(subst $(shell pwd)/,,$(@))\n"
+	$(Q)$(LD) $(LDFLAGS) -o $(BINARY) $(OBJS) -lopenstm32
+
+%.o: %.c Makefile
+	@printf "  CC      $(subst $(shell pwd)/,,$(@))\n"
+	$(Q)$(CC) $(CFLAGS) -o $@ -c $<
+
+clean:
+	@printf "  CLEAN   $(subst $(shell pwd)/,,$(OBJS))\n"
+	$(Q)rm -f *.o
+	@printf "  CLEAN   $(BINARY)\n"
+	$(Q)rm -f $(BINARY)
+	@printf "  CLEAN   $(BINARY).bin\n"
+	$(Q)rm -f $(BINARY).bin
+	@printf "  CLEAN   $(BINARY).hex\n"
+	$(Q)rm -f $(BINARY).hex
+	@printf "  CLEAN   $(BINARY).srec\n"
+	$(Q)rm -f $(BINARY).srec
+	@printf "  CLEAN   $(BINARY).list\n"
+	$(Q)rm -f $(BINARY).list
+
+flash: images
+	@printf "  FLASH   $(BINARY).bin\n"
+	@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
+	$(Q)$(OPENOCD) -s $(OPENOCD_SCRIPTS) \
+		       -f $(OPENOCD_FLASHER) \
+		       -f $(OPENOCD_BOARD) \
+		       -c "init" -c "reset halt" \
+		       -c "flash write_image erase $(BINARY).hex" \
+		       -c "reset" \
+		       -c "shutdown" $(NULL)
+
+.PHONY: images clean
+
--- a/examples/other/dogm128/README
+++ b/examples/other/dogm128/README
@@ -0,0 +1,42 @@
+------------------------------------------------------------------------------
+README
+------------------------------------------------------------------------------
+
+This example program writes some text on an DOGM128 LCD display connected to SPI2.
+
+Building
+--------
+
+ $ make
+
+Running 'make' on the top-level libopenstm32 directory will automatically
+also build this example. Or you can build the library "manually" and
+then run 'make' in this directory.
+
+You may want to override the toolchain (e.g., arm-elf or arm-none-eabi):
+
+ $ PREFIX=arm-none-eabi make
+
+For a more verbose build you can use
+
+ $ make V=1
+
+
+Flashing
+--------
+
+You can flash the generated code using OpenOCD:
+
+ $ make flash
+
+Or you can do the same manually via:
+
+ $ openocd -f interface/jtagkey-tiny.cfg -f target/stm32.cfg
+ $ telnet localhost 4444
+ > reset halt
+ > flash write_image erase main.hex
+ > reset
+
+Replace the "jtagkey-tiny.cfg" with whatever JTAG device you are using, and/or
+replace "stm.cfg" with your respective config file.
+
--- a/examples/other/dogm128/dogm128.c
+++ b/examples/other/dogm128/dogm128.c
@@ -0,0 +1,291 @@
+/*
+ * This file is part of the libopenstm32 project.
+ *
+ * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "./dogm128.h"
+
+u8 dogm128_ram[1024];
+u8 dogm128_cursor_x;
+u8 dogm128_cursor_y;
+
+void dogm128_send_command(u8 command)
+{
+	u32 counter;
+
+	gpio_clear(DOGM128_A0_PORT, DOGM128_A0_PIN);      /* A0 low for commands */
+	spi_send(DOGM128_SPI, command);
+
+       	for (counter = 0; counter<=500; counter++) /* wait */
+       	{}
+}
+
+void dogm128_send_data(u8 data)
+{
+	u32 counter;
+
+	gpio_set(DOGM128_A0_PORT, DOGM128_A0_PIN);      /* A0 high for data */
+	spi_send(DOGM128_SPI, data);
+
+       	for (counter = 0; counter<=500; counter++) /* wait */
+       	{}
+}
+
+void dogm128_init()
+{
+	u32 counter;
+
+	/* reset the display */
+        gpio_clear(DOGM128_RESET_PORT, DOGM128_RESET_PIN);      /* reset low for dogm128 */
+        for (counter = 0; counter<=60000; counter++) /* wait */
+        {}
+        gpio_set(DOGM128_RESET_PORT, DOGM128_RESET_PIN);        /* reset high for dogm128 */
+
+        for (counter = 0; counter<=60000; counter++) /* wait */
+        {}
+
+        gpio_clear(DOGM128_A0_PORT, DOGM128_A0_PIN);      /* A0 low for init */
+
+	/* tell the display that we want to start */
+        spi_set_nss_low(DOGM128_SPI);
+
+	/* init sequence */
+        dogm128_send_command(DOGM128_DISPLAY_START_ADDRESS_BASE + 0);
+        dogm128_send_command(DOGM128_ADC_REVERSE);
+        dogm128_send_command(DOGM128_COM_OUTPUT_SCAN_NORMAL);
+        dogm128_send_command(DOGM128_DISPLAY_NORMAL);
+        dogm128_send_command(DOGM128_BIAS_19);
+        dogm128_send_command(DOGM128_POWER_CONTROL_BASE + 0x07);
+        dogm128_send_command(DOGM128_BOOSTER_RATIO_SET);
+        dogm128_send_command(0x00); /* Booster x4 */
+        dogm128_send_command(DOGM128_V0_OUTPUT_RESISTOR_BASE + 0x07);
+        dogm128_send_command(DOGM128_ELECTRONIC_VOLUME_MODE_SET);
+        dogm128_send_command(0x16); /* Contrast */
+        dogm128_send_command(DOGM128_STATIC_INDICATOR_OFF);
+        dogm128_send_command(0x00); /* Flashing OFF */
+        dogm128_send_command(DOGM128_DISPLAY_ON);
+
+	/* end transfer */
+        spi_set_nss_high(DOGM128_SPI);
+}
+
+void dogm128_print_char(u8 data)
+{
+	u8 i;
+	u8 page;
+	u8 shift;
+	u8 xcoord;
+	u8 ycoord;
+
+	xcoord = dogm128_cursor_x;
+	ycoord = dogm128_cursor_y;
+
+	page = (63 - ycoord) / 8; /* the display consists of 8 lines a 8 dots each. */
+	shift = (7 -((63 - ycoord) % 8)); /* vertical shift */
+
+	/* font is 8x5 so iterate each column of the character */	
+	for (i = 0; i <= 5; i++) {
+		/* right border reached? */
+		if ((xcoord + i) > 127)
+			return;
+		dogm128_cursor_x++;
+
+		/* 0xAA = end of character - no dots in this line */
+		if (dogm128_font[data - 0x20][i] == 0xAA) { 
+			dogm128_ram[(page * 128) + xcoord + i] &= ~(0xFF >> shift); /* clear area */
+			if ((shift > 0) && (page > 0)) 
+				dogm128_ram[((page - 1) * 128) + xcoord + i] &= ~(0xFF << (8 - shift)); /* clear area */
+			return;
+		}
+
+		/* lower part */
+		dogm128_ram[(page * 128) + xcoord + i] &= ~(0xFF >> shift); /* clear area */
+		dogm128_ram[(page * 128) + xcoord + i] = (dogm128_font[data - 0x20][i] >> shift);
+		/* higher part if needed */
+		if ((shift > 0) && (page > 0)) {
+			dogm128_ram[((page - 1) * 128) + xcoord + i] &= ~(0xFF << (8 - shift)); /* clear area */
+			dogm128_ram[((page - 1) * 128) + xcoord + i] = (dogm128_font[data - 0x20][i] << (8 - shift)); 
+		}
+	}
+}
+
+void dogm128_set_cursor(u8 xcoord, u8 ycoord)
+{
+	dogm128_cursor_x = xcoord;
+	dogm128_cursor_y = ycoord;
+}
+
+void dogm128_print_string(char * s)
+{
+	while (*s != 0) {
+		dogm128_print_char(*s);
+		s++;
+	}
+}
+
+void dogm128_set_dot(u8 xcoord, u8 ycoord)
+{
+	dogm128_ram[(((63 - ycoord) / 8) * 128) + xcoord] |= (1 << ((63 - ycoord) % 8)); 
+}
+
+void dogm128_clear_dot(u8 xcoord, u8 ycoord)
+{
+	dogm128_ram[(((63 - ycoord) / 8) * 128) + xcoord] &= ~(1 << ((63 - ycoord) % 8)); 
+}
+
+void dogm128_update_display()
+{
+	u8 page;
+	u8 column;
+
+	/* tell the display that we want to start */
+        spi_set_nss_low(DOGM128_SPI);
+
+	for (page = 0; page <= 7; page++) {
+        	dogm128_send_command(0xB0 + page); /* set page */
+		dogm128_send_command(0x10); /* set column upper address to 0 */
+		dogm128_send_command(0x00); /* set column lower address to 0 */
+
+		for (column = 0; column <= 127; column++) {
+			dogm128_send_data(dogm128_ram[(page * 128) + column]);
+		}
+	}
+	
+        spi_set_nss_high(DOGM128_SPI);
+}
+
+void dogm128_clear()
+{
+	u16 i;
+	
+	for (i = 0; i<=1023; i++) {
+		dogm128_ram[i] = 0;
+	}	
+	dogm128_update_display();
+}
+
+/* This is a non-monospace font definition (upside down for better handling).
+ * 0xAA is the end of the character so its not space efficient in your memory, but on your display.
+ * We are starting with " " as the first printable character at 0x20, so we have to substract 0x20 later.
+ * Its the only defined to 127/0x7F so if you have german umlauts or other special characters from above
+ * you have to expand this definition a little bit. */
+
+const u8 dogm128_font[96][6] = {
+
+  /* 20 SPACE  */  {0x00, 0x00, 0x00, 0xAA, 0xAA, 0xAA},
+  /* 21 ! */  {0x5E, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 22 " */  {0x66, 0x00, 0x66, 0xAA, 0xAA, 0xAA},
+  /* 23 # */  {0x28, 0x7C, 0x28, 0x7C, 0x28, 0xAA},
+  /* 24 $ */  {0x24, 0x2A, 0x7F, 0x2A, 0x10, 0xAA},
+  /* 25 % */  {0x62, 0x18, 0x46, 0xAA, 0xAA, 0xAA},
+  /* 26 & */  {0x30, 0x4C, 0x5A, 0x24, 0x50, 0xAA}, 
+  /* 27 ' */  {0x06, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 28 ( */  {0x3E, 0x41, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 29 ) */  {0x41, 0x3E, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 2A * */  {0x28, 0x10, 0x7C, 0x10, 0x28, 0xAA}, 
+  /* 2B + */  {0x10, 0x38, 0x10, 0xAA, 0xAA, 0xAA},
+  /* 2C , */  {0xC0, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 2D - */  {0x10, 0x10, 0x10, 0xAA, 0xAA, 0xAA},
+  /* 2E . */  {0x40, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 2F / */  {0x60, 0x18, 0x06, 0xAA, 0xAA, 0xAA},
+
+  /* 30 0 */  {0x3C, 0x42, 0x42, 0x3C, 0xAA, 0xAA}, 
+  /* 31 1 */  {0x44, 0x7E, 0x40, 0xAA, 0xAA, 0xAA},
+  /* 32 2 */  {0x44, 0x62, 0x52, 0x4C, 0xAA, 0xAA},
+  /* 33 3 */  {0x4A, 0x4A, 0x34, 0xAA, 0xAA, 0xAA},
+  /* 34 4 */  {0x1E, 0x10, 0x78, 0x10, 0xAA, 0xAA},
+  /* 35 5 */  {0x4E, 0x4A, 0x32, 0xAA, 0xAA, 0xAA},
+  /* 36 6 */  {0x3C, 0x4A, 0x4A, 0x30, 0xAA, 0xAA},
+  /* 37 7 */  {0x62, 0x12, 0x0E, 0xAA, 0xAA, 0xAA},
+  /* 38 8 */  {0x34, 0x4A, 0x4A, 0x34, 0xAA, 0xAA},
+  /* 39 9 */  {0x0C, 0x52, 0x52, 0x3C, 0xAA, 0xAA},
+  /* 3A : */  {0x28, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 3B ; */  {0xC8, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 3C < */  {0x10, 0x28, 0x44, 0xAA, 0xAA, 0xAA},
+  /* 3D = */  {0x28, 0x28, 0x28, 0xAA, 0xAA, 0xAA},
+  /* 3E > */  {0x44, 0x28, 0x10, 0xAA, 0xAA, 0xAA},
+  /* 3F ? */  {0x02, 0x52, 0x0C, 0xAA, 0xAA, 0xAA},
+
+  /* 40 @ */  {0x3C, 0x42, 0x12, 0x2A, 0x3C, 0xAA},
+  /* 41 A */  {0x7C, 0x12, 0x12, 0x7C, 0xAA, 0xAA},
+  /* 42 B */  {0x7E, 0x4A, 0x4A, 0x34, 0xAA, 0xAA},
+  /* 43 C */  {0x3C, 0x42, 0x42, 0x24, 0xAA, 0xAA},
+  /* 44 D */  {0x7E, 0x42, 0x42, 0x3C, 0xAA, 0xAA},
+  /* 45 E */  {0x7E, 0x4A, 0x4A, 0xAA, 0xAA, 0xAA},
+  /* 46 F */  {0x7E, 0x0A, 0x0A, 0xAA, 0xAA, 0xAA},
+  /* 47 G */  {0x3C, 0x42, 0x52, 0x34, 0xAA, 0xAA},
+  /* 48 H */  {0x7E, 0x08, 0x08, 0x7E, 0xAA, 0xAA},
+  /* 49 I */  {0x42, 0x7E, 0x42, 0xAA, 0xAA, 0xAA},
+  /* 4A J */  {0x42, 0x42, 0x3E, 0xAA, 0xAA, 0xAA},
+  /* 4B K */  {0x7E, 0x08, 0x14, 0x62, 0xAA, 0xAA},
+  /* 4C L */  {0x7E, 0x40, 0x40, 0xAA, 0xAA, 0xAA},
+  /* 4D M */  {0x7E, 0x04, 0x08, 0x04, 0x7E, 0xAA},
+  /* 4E N */  {0x7E, 0x04, 0x18, 0x20, 0x7E, 0xAA},
+  /* 4F O */  {0x3C, 0x42, 0x42, 0x3C, 0xAA, 0xAA},
+
+  /* 50 P */  {0x7E, 0x12, 0x12, 0x0C, 0xAA, 0xAA},
+  /* 51 Q */  {0x3C, 0x42, 0x42, 0xBC, 0xAA, 0xAA},
+  /* 52 R */  {0x7E, 0x12, 0x12, 0x6C, 0xAA, 0xAA},
+  /* 53 S */  {0x44, 0x4A, 0x4A, 0x30, 0xAA, 0xAA},
+  /* 54 T */  {0x02, 0x7E, 0x02, 0xAA, 0xAA, 0xAA},
+  /* 55 U */  {0x3E, 0x40, 0x40, 0x3E, 0xAA, 0xAA},
+  /* 56 V */  {0x06, 0x18, 0x60, 0x18, 0x06, 0xAA},
+  /* 57 W */  {0x3E, 0x40, 0x3E, 0x40, 0x3E, 0xAA},
+  /* 58 X */  {0x42, 0x24, 0x18, 0x24, 0x42, 0xAA},
+  /* 59 Y */  {0x9E, 0xA0, 0xA0, 0x7E, 0xAA, 0xAA},
+  /* 5A Z */  {0x62, 0x52, 0x4A, 0x46, 0xAA, 0xAA},
+  /* 5B [ */  {0x7E, 0x42, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 5C \ */  {0x06, 0x18, 0x60, 0xAA, 0xAA, 0xAA},
+  /* 5D ] */  {0x42, 0x7E, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 5E ^ */  {0x04, 0x02, 0x04, 0xAA, 0xAA, 0xAA},
+  /* 5F _ */  {0x40, 0x40, 0x40, 0xAA, 0xAA, 0xAA},
+
+  /* 60 ` */  {0x02, 0x04, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 61 a */  {0x20, 0x54, 0x54, 0x78, 0xAA, 0xAA},
+  /* 62 b */  {0x7E, 0x44, 0x44, 0x38, 0xAA, 0xAA},
+  /* 63 c */  {0x38, 0x44, 0x44, 0x28, 0xAA, 0xAA},
+  /* 64 d */  {0x38, 0x44, 0x44, 0x7E, 0xAA, 0xAA},
+  /* 65 e */  {0x38, 0x54, 0x54, 0x58, 0xAA, 0xAA},
+  /* 66 f */  {0x7C, 0x0A, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 67 g */  {0x98, 0xA4, 0xA4, 0x7C, 0xAA, 0xAA},
+  /* 68 h */  {0x7E, 0x04, 0x04, 0x78, 0xAA, 0xAA},
+  /* 69 i */  {0x7A, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 6A j */  {0x40, 0x3A, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 6B k */  {0x7E, 0x10, 0x28, 0x44, 0xAA, 0xAA},
+  /* 6C l */  {0x7E, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 6D m */  {0x7C, 0x04, 0x78, 0x04, 0x78, 0xAA},
+  /* 6E n */  {0x7C, 0x04, 0x04, 0x78, 0xAA, 0xAA},
+  /* 6F o */  {0x38, 0x44, 0x44, 0x38, 0xAA, 0xAA},
+
+  /* 70 p */  {0xFC, 0x24, 0x24, 0x18, 0xAA, 0xAA},
+  /* 71 q */  {0x18, 0x24, 0x24, 0xFC, 0xAA, 0xAA},
+  /* 72 r */  {0x78, 0x04, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 73 s */  {0x48, 0x54, 0x54, 0x20, 0xAA, 0xAA},
+  /* 74 t */  {0x04, 0x3E, 0x44, 0xAA, 0xAA, 0xAA},
+  /* 75 u */  {0x3C, 0x40, 0x40, 0x3C, 0xAA, 0xAA},
+  /* 76 v */  {0x0C, 0x30, 0x40, 0x30, 0x0C, 0xAA},
+  /* 77 w */  {0x3C, 0x40, 0x3C, 0x40, 0x3C, 0xAA},
+  /* 78 x */  {0x44, 0x28, 0x10, 0x28, 0x44, 0xAA},
+  /* 79 y */  {0x1C, 0xA0, 0xA0, 0x7C, 0xAA, 0xAA},
+  /* 7A z */  {0x64, 0x54, 0x4C, 0xAA, 0xAA, 0xAA},
+  /* 7B { */  {0x08, 0x36, 0x41, 0xAA, 0xAA, 0xAA},
+  /* 7C | */  {0x7E, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
+  /* 7D } */  {0x41, 0x36, 0x08, 0xAA, 0xAA, 0xAA},
+  /* 7E ~ */  {0x20, 0x10, 0x20, 0x10, 0xAA, 0xAA},
+  /* 7F DEL  */  {0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA} 
+};
+
--- a/examples/other/dogm128/dogm128.h
+++ b/examples/other/dogm128/dogm128.h
@@ -0,0 +1,86 @@
+/*
+ * This file is part of the libopenstm32 project.
+ *
+ * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef DOGM128_H
+#define DOGM128_H
+
+#include <libopenstm32/common.h>
+#include <libopenstm32/gpio.h>
+#include <libopenstm32/spi.h>
+
+/* PB10 GPIO       - ~RESET 
+ * PB12 SPI2_NSS   - ~CS1
+ * PB13 SPI2_SCK   - SCL 
+ * PB14 SPI2_MISO  - A0 
+ * PB15 SPI2_MOSI  - SI */
+
+#define DOGM128_SPI				SPI2
+#define DOGM128_RESET_PIN			GPIO10
+#define DOGM128_RESET_PORT			GPIOB
+#define DOGM128_A0_PIN				GPIO14
+#define DOGM128_A0_PORT				GPIOB
+
+/* DOGM128 display commands */
+#define DOGM128_PAGE_BASE			0xB0
+#define DOGM128_PAGE0				0xB0
+#define DOGM128_PAGE1				0xB1
+#define DOGM128_PAGE2				0xB2
+#define DOGM128_PAGE3				0xB3
+#define DOGM128_PAGE4				0xB4
+#define DOGM128_PAGE5				0xB5
+#define DOGM128_PAGE6				0xB6
+#define DOGM128_PAGE7				0xB7
+#define DOGM128_DISPLAY_ON			0xAF
+#define DOGM128_DISPLAY_OFF			0xAE
+#define DOGM128_DISPLAY_START_ADDRESS_BASE	0x40
+#define DOGM128_ADC_NORMAL			0xA0
+#define DOGM128_ADC_REVERSE			0xA1
+#define DOGM128_DISPLAY_NORMAL			0xA6
+#define DOGM128_DISPLAY_REVERSE			0xA7
+#define DOGM128_ALL_POINTS_ON			0xA5
+#define DOGM128_ALL_POINTS_OFF			0xA4
+#define DOGM128_BIAS_19				0xA2
+#define DOGM128_BIAS_17				0xA3
+#define DOGM128_INTERNAL_RESET			0xE2
+#define DOGM128_COM_OUTPUT_SCAN_NORMAL		0xC0
+#define DOGM128_COM_OUTPUT_SCAN_REVERSE		0xC8
+#define DOGM128_POWER_CONTROL_BASE		0x28
+#define DOGM128_V0_OUTPUT_RESISTOR_BASE		0x20
+#define DOGM128_ELECTRONIC_VOLUME_MODE_SET	0x81
+#define DOGM128_STATIC_INDICATOR_OFF		0xAC
+#define DOGM128_STATIC_INDICATOR_ON		0xAD
+#define DOGM128_BOOSTER_RATIO_SET		0xF8
+
+extern const u8 dogm128_font[96][6];
+extern u8 dogm128_ram[1024];
+extern u8 dogm128_cursor_x;
+extern u8 dogm128_cursor_y;
+
+void dogm128_send_command(u8 command);
+void dogm128_set_cursor(u8 xcoord, u8 ycoord);
+void dogm128_print_char(u8 data);
+void dogm128_print_string(char * s);
+void dogm128_set_dot(u8 xcoord, u8 ycoord);
+void dogm128_clear_dot(u8 xcoord, u8 ycoord);
+void dogm128_send_data(u8 data);
+void dogm128_init();
+void dogm128_update_display();
+void dogm128_clear();
+
+#endif
--- a/examples/other/dogm128/main.c
+++ b/examples/other/dogm128/main.c
@@ -0,0 +1,151 @@
+/*
+ * This file is part of the libopenstm32 project.
+ *
+ * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopenstm32/rcc.h>
+#include <libopenstm32/flash.h>
+#include <libopenstm32/gpio.h>
+#include <libopenstm32/usart.h>
+#include <libopenstm32/timer.h>
+#include <libopenstm32/nvic.h>
+#include <libopenstm32/spi.h>
+#include "./dogm128.h"
+
+/* Set STM32 to 72 MHz. HSE 16MHz */
+void clock_setup(void)
+{
+        /* enable Internal High Speed Oscillator */
+        rcc_osc_on(HSI);
+        rcc_wait_for_osc_ready(HSI);
+
+        /* Select HSI as SYSCLK source. */
+        rcc_set_sysclk_source(SW_SYSCLKSEL_HSICLK);
+
+        /* enable External High Speed Oscillator 16MHz */
+        rcc_osc_on(HSE);
+        rcc_wait_for_osc_ready(HSE);
+        rcc_set_sysclk_source(SW_SYSCLKSEL_HSECLK);
+
+        /* set prescalers for ADC, ABP1, ABP2...  make this before touching the PLL */
+        rcc_set_hpre(HPRE_SYSCLK_NODIV); //prescales the AHB clock from the SYSCLK
+        rcc_set_adcpre(ADCPRE_PLCK2_DIV6); //prescales the ADC from the APB2 clock; max 14MHz
+        rcc_set_ppre1(PPRE1_HCLK_DIV2); //prescales the APB1 from the AHB clock; max 36MHz
+        rcc_set_ppre2(PPRE2_HCLK_NODIV); //prescales the APB2 from the AHB clock; max 72MHz
+
+        /* sysclk should run with 72MHz -> 2 Waitstates ; choose 0WS from 0-24MHz, 1WS from 24-48MHz, 2WS from 48-72MHz */
+        flash_set_ws(FLASH_LATENCY_2WS);
+
+        /* Set the PLL multiplication factor to 9. -> 16MHz (external) * 9 (multiplier) / 2 (PLLXTPRE_HSE_CLK_DIV2) = 72MHz */
+        rcc_set_pll_multiplication_factor(PLLMUL_PLL_CLK_MUL9);
+
+        /* Select HSI as PLL source. */
+        rcc_set_pll_source(PLLSRC_HSE_CLK);
+
+        /* divide external frequency by 2 before entering pll (only valid/needed for HSE) */
+        rcc_set_pllxtpre(PLLXTPRE_HSE_CLK_DIV2);
+
+        /* Enable PLL oscillator and wait for it to stabilize. */
+        rcc_osc_on(PLL);
+        rcc_wait_for_osc_ready(PLL);
+
+        /* Select PLL as SYSCLK source. */
+        rcc_set_sysclk_source(SW_SYSCLKSEL_PLLCLK);
+}
+
+void gpio_setup(void)
+{
+	/* Enable GPIOB clock. */
+	rcc_peripheral_enable_clock(&RCC_APB2ENR, IOPBEN);
+
+	/* Set GPIO6/7 (in GPIO port B) to 'output push-pull' for the LEDs. */
+	gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
+	              GPIO_CNF_OUTPUT_PUSHPULL, GPIO6);
+	gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
+	              GPIO_CNF_OUTPUT_PUSHPULL, GPIO7);
+
+	/* A0 of DOGM128 */
+	gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
+	              GPIO_CNF_OUTPUT_PUSHPULL, GPIO14);
+	/*reset of DOGM128 */
+	gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
+	              GPIO_CNF_OUTPUT_PUSHPULL, GPIO10);
+
+	/* DOGM128/SPI2 clock and MOSI and NSS(CS1) */
+	gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
+	              GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO12);
+	gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
+	              GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO13);
+	gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
+	              GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO15);
+}
+
+void spi_setup()
+{
+	/* the DOGM128 display is connected to SPI2, so initialise it correctly */
+
+	rcc_peripheral_enable_clock(&RCC_APB1ENR, SPI2EN);
+
+        spi_set_unidirectional_mode(DOGM128_SPI); /* we want to send only */
+        spi_disable_crc(DOGM128_SPI); /* no CRC for this slave */
+        spi_set_dff_8bit(DOGM128_SPI); /* 8-bit dataword-length */
+        spi_set_full_duplex_mode(DOGM128_SPI);  /* not receive-only */
+        spi_enable_software_slave_management(DOGM128_SPI); /* we want to handle the CS signal in software */
+        spi_set_nss_high(DOGM128_SPI);
+        spi_set_baudrate_prescaler(DOGM128_SPI, SPI_CR1_BR_FPCLK_DIV_256); /* PCLOCK/256 as clock */
+        spi_set_master_mode(DOGM128_SPI); /* we want to control everything and generate the clock -> master */
+        spi_set_clock_polarity_1(DOGM128_SPI); /* sck idle state high */
+        spi_set_clock_phase_1(DOGM128_SPI); /* bit is taken on the second (rising edge) of sck */
+        spi_enable_ss_output(DOGM128_SPI);
+        spi_enable(DOGM128_SPI);
+}
+
+int main(void)
+{
+	clock_setup();
+	gpio_setup();
+	spi_setup();
+
+	gpio_clear(GPIOB, GPIO7);	/* LED1 on */
+	gpio_set(GPIOB, GPIO6);		/* LED2 off */
+	
+	dogm128_init();
+	dogm128_clear();
+
+	dogm128_set_cursor(0, 56);
+	dogm128_print_string("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
+	dogm128_set_cursor(0, 48);
+	dogm128_print_string("abcdefghijklmnopqrstuvwxyz");
+	dogm128_set_cursor(0, 40);
+	dogm128_print_string(" !#$%&'()*+,-./0123456789");
+	dogm128_set_cursor(0, 32);
+	dogm128_print_string(":;<=>?@[\\]^_`{|}~");
+	
+	dogm128_set_dot(10, 10);
+	dogm128_set_dot(20, 10);
+	dogm128_set_dot(30, 10);
+	dogm128_set_dot(40, 10);
+	dogm128_set_dot(50, 10);
+	
+	dogm128_update_display();
+
+	gpio_set(GPIOB, GPIO7);	/* LED1 off */
+	while(1); /* Halt. */
+
+	return 0;
+}
+
--- a/examples/other/dogm128/main.ld
+++ b/examples/other/dogm128/main.ld
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the libopenstm32 project.
+ *
+ * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Linker script for an STM32F103RBT6 board (128K flash, 20K RAM). */
+
+/* Define memory regions. */
+MEMORY
+{
+	rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K
+	ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
+}
+
+/* Include the common ld script from libopenstm32. */
+INCLUDE libopenstm32.ld
+