SSD1306 i2c example

examples/board_ssd1306_i2c/Makefile

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+# 
+# 	Copyright 2008-2011 Michel Pollet <buserror@gmail.com>
+#
+#	This file is part of simavr.
+#
+#	simavr 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.
+#
+#	simavr 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 simavr.  If not, see <http://www.gnu.org/licenses/>.
+
+target=	ssd1306demo
+firm_src = ${wildcard at*${board}.c}
+firmware = ${firm_src:.c=.axf}
+simavr = ../../
+
+IPATH = .
+IPATH += ../shared
+IPATH += ../parts
+IPATH += ${simavr}/include
+IPATH += ${simavr}/simavr/sim
+IPATH += ${simavr}/simavr/sim
+IPATH += ${simavr}/simavr/sim
+
+VPATH = .
+VPATH += ../shared
+VPATH += ../parts
+
+LDFLAGS += -lpthread
+
+include ../Makefile.opengl
+
+all: obj atmega32_ssd1306.axf ${target}
+
+atmega32_ssd1306.axf: atmega32_ssd1306.c ssd1306.c images.c twimaster.c
+
+include ${simavr}/Makefile.common
+
+board = ${OBJ}/${target}.elf
+
+${board} : ${OBJ}/ac_input.o
+${board} : ${OBJ}/ssd1306_virt.o
+${board} : ${OBJ}/ssd1306_glut.o
+${board} : ${OBJ}/${target}.o
+
+${target}: ${board}
+	@echo $@ done
+
+clean: clean-${OBJ}
+	rm -rf *.hex *.a *.axf ${target} *.vcd .*.swo .*.swp .*.swm .*.swn

examples/board_ssd1306_i2c/README

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+board_ssd1306
+
+(C) 2014 Doug Szumski <d.s.szumski@gmail.com>
+
+This sample code demonstrates the use of the SSD1306 OLED driver. It 
+runs identically in real life. 
+
+The part has been tested using only the supplied driver.
+
+In the future it could be extended to allow parallel addressing.

examples/board_ssd1306_i2c/atmega32_ssd1306.c

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+/*
+ atmega32_ssd1306.c
+
+ Copyright 2014 Doug Szumski <d.s.szumski@gmail.com>
+
+ This file is part of simavr.
+
+ simavr 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.
+
+ simavr 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 simavr.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <string.h>
+#include <avr/io.h>
+#include <util/delay.h>
+
+#undef F_CPU
+#define F_CPU 7380000
+
+#include "avr_mcu_section.h"
+AVR_MCU(F_CPU, "atmega32");
+
+#include "ssd1306.h"
+#include "images.h"
+#include "../shared/twimaster.h"
+
+#define DEFAULT_DELAY 10000
+
+void
+spi_init (void)
+{
+	DDRB |= (1 << PB4) | (1 << PB5) | (1 << PB7) | (1 << PB3) | (1 << PB1);
+	SPCR |= (1 << SPE) | (1 << MSTR);
+	// Double the speed
+	SPSR |= (1 << SPI2X);
+}
+
+void
+demo_set_contrast (void)
+{
+  	//do while loop needed to iterate through full range of uint8_t
+	uint8_t contrast=0;
+	do {
+		ssd1306_set_contrast (contrast);
+		_delay_ms (DEFAULT_DELAY/200);
+		contrast++;
+	} while (contrast>0);
+}
+
+void
+demo_show_image (void)
+{
+	ssd1306_write_image_fb (logo);
+	ssd1306_display_fb ();
+	_delay_ms (DEFAULT_DELAY);
+}
+
+/* Draw some dots by writing directly to the VRAM */
+void
+demo_set_byte_direct (void)
+{
+	ssd1306_clear_screen ();
+	uint8_t x = 0;
+	for (uint8_t page = 0; page < SSD1306_PIXEL_PAGES; ++page)
+	{
+		for (x = 0; x < SSD1306_X_PIXELS; x += 2)
+		{
+			ssd1306_write_byte (x, page, 0xAA);
+		}
+	}
+	_delay_ms (DEFAULT_DELAY);
+}
+
+/* Draw some stripes by setting individual pixels on the frame buffer */
+void
+demo_set_pixels (void)
+{
+	ssd1306_clear_fb ();
+	uint8_t x = 0;
+	for (uint8_t y = 0; y < SSD1306_Y_PIXELS; ++y)
+	{
+		for (x = 0; x < SSD1306_X_PIXELS; x += 2)
+		{
+			ssd1306_set_pixel_fb (x, y, PIXEL_STATE_ON);
+		}
+	}
+	ssd1306_display_fb ();
+	_delay_ms (DEFAULT_DELAY);
+}
+
+void
+demo_clear_screen (void)
+{
+	// Turn all pixels on
+	memset (ssd1306_frame_buffer_g, 0xFF, SSD1306_PIXEL_BYTES);
+	ssd1306_display_fb ();
+	_delay_ms (DEFAULT_DELAY);
+
+	// Clear screen
+	ssd1306_clear_screen ();
+	_delay_ms (DEFAULT_DELAY);
+}
+
+void
+demo_set_power_state (void)
+{
+	ssd1306_set_power_state (POWER_STATE_SLEEP);
+	_delay_ms (DEFAULT_DELAY);
+	ssd1306_set_power_state (POWER_STATE_ON);
+	_delay_ms (DEFAULT_DELAY);
+}
+
+void
+demo_rotate_display (void)
+{
+	for (uint8_t i = DISP_ORIENT_NORMAL;
+	                i <= DISP_ORIENT_UPSIDE_DOWN_MIRRORED; ++i)
+	{
+		ssd1306_set_display_orientation (i);
+		ssd1306_write_image_fb (logo);
+		ssd1306_display_fb ();
+		_delay_ms (DEFAULT_DELAY);
+	}
+}
+
+void
+demo_invert_image ()
+{
+	ssd1306_set_display_orientation (DISP_ORIENT_NORMAL);
+	for (uint8_t i = DISPLAY_MODE_NORMAL; i <= DISPLAY_MODE_INVERTED; ++i)
+	{
+		ssd1306_set_display_mode (i);
+		ssd1306_write_image_fb (logo);
+		ssd1306_display_fb ();
+		// Check inverted contrast works
+		demo_set_contrast ();
+	}
+}
+
+int
+main ()
+{
+	i2c_init ();
+
+	/*
+	 * Demonstrate the virtual part functionality. Runs approx 10 times
+	 * faster on an i7-3740QM CPU @ 2.70GHz than in real life.
+	 */
+	for (;;)
+	{
+		ssd1306_init_display ();
+
+		demo_show_image ();
+		demo_set_power_state ();
+		demo_set_contrast ();
+		demo_set_byte_direct ();
+		demo_set_pixels ();
+		demo_clear_screen ();
+		demo_rotate_display ();
+		demo_invert_image ();
+	}
+
+}

examples/board_ssd1306_i2c/images.c

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+/*
+ images.c
+
+ Copyright 2014 Doug Szumski <d.s.szumski@gmail.com>
+
+ This file is part of simavr.
+
+ simavr 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.
+
+ simavr 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 simavr.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "images.h"
+
+/* 128x64 run length encoded simavr logo */
+const uint8_t logo[] PROGMEM =
+{
+	0x0, 0x0, 0xff, 0x0, 0x0, 0x7, 0xfe, 0xfe, 0x4, 0xe, 0x6, 0x6, 0x8, 0xe, 0xfe,
+	0xfe, 0x3, 0xfc, 0x0, 0x0, 0x5, 0x54, 0xfe, 0xfe, 0x2, 0x0, 0x0,
+	0x3, 0xfe, 0xfe, 0x2, 0xff, 0x6, 0x1e, 0x7e, 0xfc, 0xe0, 0xc0,
+	0x0, 0x80, 0xc0, 0xf0, 0x7c, 0x3e, 0xe, 0x5e, 0xff, 0xfe, 0xfe,
+	0x2, 0xff, 0xfe, 0xfe, 0x2, 0x0, 0x0, 0x6, 0xfe, 0xfe, 0x3, 0x6,
+	0x6, 0xa, 0x2e, 0xfe, 0xfe, 0x3, 0x0, 0x0, 0x2, 0xfe, 0xff,
+	0xba, 0x0, 0x0, 0x7, 0xf4, 0xff, 0xff, 0x5, 0xfe, 0x0, 0x0, 0x2,
+	0xfe, 0xff, 0xff, 0x2, 0xf, 0x7, 0x7, 0xa, 0xff, 0xff, 0x3, 0x0,
+	0x0, 0xf, 0x7f, 0x7f, 0x4, 0x70, 0x60, 0x60, 0x8, 0xe0, 0xe0,
+	0x2, 0xe1, 0xe1, 0x2, 0xc0, 0x0, 0x0, 0x2, 0x80, 0x80, 0x3,
+	0xe5, 0xff, 0xff, 0x2, 0x0, 0x0, 0x3, 0xff, 0xff, 0x3, 0x0, 0x0,
+	0x3, 0x1, 0x7, 0x1f, 0x1f, 0x2, 0xf, 0x7, 0x1, 0x0, 0x0, 0x3,
+	0x55, 0xff, 0xff, 0x6, 0x0, 0x0, 0x2, 0x80, 0x80, 0x3, 0xc0,
+	0xff, 0xff, 0x3, 0xf0, 0x60, 0x60, 0x8, 0xf0, 0xfd, 0xff, 0xff,
+	0x3, 0x0, 0x0, 0x2, 0xff, 0xff, 0x2, 0xbb, 0x0, 0x0, 0x7, 0xf7,
+	0xff, 0xff, 0x6, 0x0, 0x0, 0x2, 0xff, 0xff, 0x3, 0xf0, 0xf0,
+	0x2, 0xe0, 0xe0, 0x3, 0x60, 0x60, 0x4, 0x70, 0xf0, 0xff, 0xff,
+	0x3, 0xf8, 0xe0, 0xe0, 0x3, 0x0, 0x0, 0xb, 0xf0, 0xf8, 0xf8,
+	0x5, 0xe0, 0x0, 0x0, 0x7, 0xff, 0xff, 0x4, 0x0, 0x0, 0x2, 0xff,
+	0xff, 0x6, 0x0, 0x0, 0x3, 0xff, 0xff, 0x3, 0x0, 0x0, 0x3, 0x40,
+	0xf8, 0xf8, 0x5, 0xf0, 0x0, 0x0, 0x3, 0xb5, 0xff, 0xff, 0x6,
+	0x0, 0x0, 0x2, 0xff, 0xff, 0x7, 0x0, 0x0, 0xa, 0x77, 0xff, 0xff,
+	0x3, 0x0, 0x0, 0x2, 0x7, 0x1f, 0x3f, 0xf8, 0xe0, 0xc0, 0x0, 0x0,
+	0x4, 0xf7, 0xff, 0xff, 0x4, 0x7f, 0x3f, 0x0, 0x0, 0x2, 0xff,
+	0xff, 0x7, 0x0, 0x0, 0x6, 0x1, 0xff, 0xff, 0x7, 0x0, 0x0, 0xb,
+	0x7, 0xf, 0xf, 0x6, 0xe, 0xe, 0x7, 0xf, 0xf, 0x3, 0x7, 0x0, 0x0,
+	0x2, 0xf, 0xf, 0x6, 0x0, 0x0, 0x3, 0xf, 0xf, 0x2, 0x7, 0x0, 0x0,
+	0x3, 0x3, 0xf, 0xf, 0x6, 0x0, 0x0, 0x3, 0x2, 0xf, 0xf, 0x6, 0x0,
+	0x0, 0x2, 0x7, 0xf, 0xf, 0x5, 0x7, 0x0, 0x0, 0xa, 0x3, 0xf, 0xf,
+	0x3, 0x0, 0x0, 0x6, 0x3, 0x7, 0xf, 0xe, 0xe, 0x2, 0xf, 0x7, 0x3,
+	0x3, 0x2, 0x1, 0x0, 0x0, 0x5, 0x7, 0xf, 0xf, 0x5, 0x7, 0x0, 0x0,
+	0x7, 0x7, 0xf, 0xf, 0x5, 0x7, 0x0, 0x0, 0xff, 0x0, 0x0, 0x6
+};
+
+

examples/board_ssd1306_i2c/images.h

@@ -0,0 +1,30 @@
+/*
+ images.h
+
+ Copyright 2014 Doug Szumski <d.s.szumski@gmail.com>
+
+ This file is part of simavr.
+
+ simavr 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.
+
+ simavr 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 simavr.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef IMAGES_H_
+#define IMAGES_H_
+
+#include <stdint.h>
+#include <avr/pgmspace.h>
+
+extern const uint8_t logo[] PROGMEM;
+
+#endif /* IMAGES_H_ */