![](/media/cache/profiles/BYNBmpmCQAAYTvZ.jpg.50x50_q85.jpg)
This program is for mbed-Geiger counter system. It use OLED module, GPS module (with RTC), TextLCD, SD FileSystem and some Interrupt pin.
MARMEX_OB_oled.h
- Committer:
- y_notsu
- Date:
- 2011-07-02
- Revision:
- 0:97f8ed953c0d
File content as of revision 0:97f8ed953c0d:
/** MARMEX_OB OLED screen drawing library * * @class MARMEX_OB_oled * @author tedd * @version 0.51 * @date 08-Apr-2011 * * Released under the MIT License: http://mbed.org/license/mit * * MARMEX_OB_oled OLED screen drawing library for mbed * This code has been written based on sample code and advises * from Ochiai-san (Marutsu-Elec). Thank you! * * SPI mode: * 9bit or 8bit SPI mode can be selected by disabling/enabling "#define MARMEX_OB_SPI_8BIT_MODE". * See source code in this (MARMEX_OB_oled.h) file. */ #ifndef MBED_MARMEX_OB_OLED #define MBED_MARMEX_OB_OLED #include "mbed.h" #include "NokiaLCD.h" /** @def MARMEX_OB_SPI_8BIT_MODE * * MARMEX_OB_oled_oled OLED screen SPI access length setting * Enabling "MARMEX_OB_SPI_8BIT_MODE" makes 9bit SPI access by 8bit * 2 times. * This may be useful if other 8bit access SPI device on same SPI bus. * * If disabled (just coment out the "#define MARMEX_OB_SPI_8BIT_MODE"), SPI access willbe done by 9 bit format. */ #define MARMEX_OB_SPI_8BIT_MODE /** MARMEX_OB_oled OLED screen drawing class * * This is a driver code for MARMEX_OB_oled board OLED screen. * This class inherits NokiaLCD class of mbed.org. * To use this class, import the NokiaLCD class from here.. * http://mbed.org/users/simon/libraries/NokiaLCD/ * * Example: * @code * #include "mbed.h" * #include "MARMEX_OB_oled.h" * * // oled1 is for MARMEX_OB_oled board on MAPLE slot 1 * // oled1 is for MARMEX_OB_oled board on MAPLE slot 2 * * MARMEX_OB_oled oled1( p5, p7, p8, p30, p11 ); // mosi, sclk, cs, rst, power_control * //MARMEX_OB_oled oled2( p5, p7, p26, p21, p17 ); // mosi, sclk, cs, rst, power_control * * * int main() { * oled1.background( 0x000000 ); * oled1.cls(); * * int colorbar_width = MARMEX_OB_oled::WIDTH / 8; * * for ( int i = 0; i < 8; i++ ) * oled1.fill( colorbar_width * i, 0, colorbar_width, MARMEX_OB_oled::HEIGHT, ((i & 0x4) ? 0xFF0000 : 0x000000) | ((i & 0x2) ? 0x00FF00 : 0x000000) | ((i & 0x1) ? 0x0000FF : 0x000000) ); * * oled1.fill( 50, 50, 64, 64, 0xCCCCCC );; * * oled1.locate( 0, 3 ); * oled1.printf( "Hello World!" ); * oled1.locate( 0, 4 ); * oled1.printf( "SPI = %s", MERMEX_OB_SPI_MODE_STR ); * * for (int i = 0; i < MARMEX_OB_oled::WIDTH; i++ ) { * oled1.pixel( i, 80 + sin( (float)i / 5.0 ) * 10, 0x000000 ); * } * } * @endcode */ class MARMEX_OB_oled : public NokiaLCD { public: /** General parameters for MARMEX_OB_oled */ enum { ROWS = 15, /**< # of rows (lines) for displaying characters */ COLS = 16, /**< # of columns (width) for displaying characters */ WIDTH = 128, /**< screen width [pixels] */ HEIGHT = 128, /**< screen height [pixels] */ SPI_FREQUENCY = 20000000 /**< SPI (sclk) SPI_FREQUENCY */ }; /** Constants for power() function */ enum { OFF = 0, /**< : to turning-OFF */ ON /**< : to turning-ON */ }; /** Create a MARMEX_OB_oled object connected to specified SPI and DigitalOut pins * * @param mosi SPI-MOSI pin (for MAPLE board, use p5) * @param sclk SPI-SCLK pin (for MAPLE board, use p8) * @param cs chip select signal (for MAPLE board, use p8(slot1), p26(slot2)) * @param rst reset signal (for MAPLE board, use p30(slot1), p21(slot2)) * @param power_pin backlight power control signal (for MAPLE board, use p11(slot1), p17(slot2)) * * Example of MARMEX_OB_oled on MAPLE board: * @code * #include "mbed.h" * #include "MARMEX_OB_oled.h" * * MARMEX_OB_oled oled_on_maple_slot1( p5, p7, p8, p30, p11 ); // mosi, sclk, cs, rst, power_control * MARMEX_OB_oled oled_on_maple_slot2( p5, p7, p26, p21, p17 ); // mosi, sclk, cs, rst, power_control * ... * .. * @endcode */ MARMEX_OB_oled( PinName mosi, PinName sclk, PinName cs, PinName rst, PinName power_pin ) : NokiaLCD( mosi, sclk, cs, rst, NokiaLCD::LCD6100 ), _power_pin( power_pin ) { power( ON ); reset(); } #if DOXYGEN_ONLY /** Write a character to the LCD * * @param c The character to write to the display */ int putc( int c ); /** Write a formated string to the LCD * * @param format A printf-style format string, followed by the * variables to use in formating the string. * * !!! 16th character in the string will be disappeared * !!! This problem is due to difference of screen size NokiaLCD library and its internal mechanism... */ int printf( const char* format, ... ); /** Set the foreground colour * * @param c 24-bit colour */ void foreground(int c); /** Set the background colour * * @param c 24-bit colour */ void background(int c); #endif /** reset MARMEX_OB_oled * * Executes hardware reset and initialize. * See MARMEX_OB_oled manual for the initialization sequence and values * For gamma correction table, using math function to make the code simple */ void reset( void ) { #define GAMMA_LUT_SIZE 63 unsigned char gamma_LUT[ GAMMA_LUT_SIZE ]; for ( int i = 0; i < GAMMA_LUT_SIZE; i++ ) gamma_LUT[ i ] = (unsigned char)(powf( ((float)i / 62.0), (1.0 / 0.58) ) * 178.0 + 2.0); // setup the SPI interface and bring display out of reset _cs = 1; _rst = 0; #ifdef MARMEX_OB_SPI_8BIT_MODE _spi.format( 8 ); #else _spi.format( 9 ); #endif _spi.frequency( SPI_FREQUENCY ); wait_ms( 1 ); _rst = 1; wait_ms( 1 ); _cs = 0; command( SET_DISPLAY_MODE_ALL_OFF ); command( SET_COMMAND_LOCK ); data( 0x12 ); command( SET_COMMAND_LOCK ); data( 0xb1 ); command( SET_SLEEP_MODE_ON ); command( FRONT_CLOCK_DRIVER_OSC_FREQ ); data( 0xF1 ); command( SET_MUX_RATIO ); data( 0x7F ); command( SET_DISPAY_OFFSET ); data( 0x00 ); command( SET_DISPAY_START_LINE ); data( 0x00 ); command( SET_REMAP_COLOR_DEPTH ); data( 0x74 ); command( SET_GPIO ); data( 0x00); command( FUNCTION_SELECTION ); data( 0x01 ); command( SET_SEGMENT_LOW_VOLTAGE ); data( 0xA0 ); data( 0xB5 ); data( 0x55 ); command( SET_CONTRAST_CURRENT_FOR_COLOR_ABC ); data( 0xC8 ); data( 0x80 ); data( 0xC8 ); command( MASTER_CONTRAST_CURRENT_CONTROL ); data( 0x0F ); command( LOOKUP_TABLE_FOR_GRAYSCALE_PULSE_WIDTH ); for ( int i = 0; i < GAMMA_LUT_SIZE; i++ ) data( gamma_LUT[ i ] ); command( SET_RESET_PRECHARGE_PERIOD ); data( 0x32 ); command( ENHANCE_DRIVING_SCHEME_CAPABILITY ); data( 0x04 ); data( 0x00 ); data( 0x00 ); command( SET_PRECHARGE_VOLTAGE ); data( 0x17 ); command( SET_SECOND_PRECHARGE_VOLTAGE ); data( 0x01 ); command( SET_VCOMH_VOLTAGE ); data( 0x05 ); command( SET_DISPLAY_MODE_RESET ); #if 0 command( SET_COLUMN_ADDRESS ); data( 0x00 ); data( 0x7F ); command( SET_ROW_ADDRESS ); data( 0x00 ); data( 0x7F); command( WRITE_RAM_COMMAND ); for ( int i = 0; i < WIDTH * HEIGHT; i++ ) data( 0x00 ); #endif _cs = 1; cls(); wait_ms( 200 ); command( SET_SLEEP_MODE_OFF ); } /** Clear the screen and locate to 0,0 */ void cls( void ) { fill( 0, 0, WIDTH , HEIGHT, _background ); _row = 0; _column = 0; } /** Set a pixel on te screen * * @param x horizontal position from left * @param y vertical position from top * @param colour 24-bit colour in format 0x00RRGGBB */ virtual void pixel( int x, int y, int colour ) { _cs = 0; _window( x, y, 1, 1 ); _putp( colour ); _cs = 1; } /** Fill an area of the screen * * @param x horizontal position from left * @param y vertical position from top * @param width width in pixels * @param height height in pixels * @param colour 24-bit colour in format 0x00RRGGBB */ void fill( int x, int y, int width, int height, int colour ) { _cs = 0; _window( x, y, width, height ); for (int i = 0; i < width * height; i++ ) { _putp( colour ); } _window( 0, 0, WIDTH, HEIGHT ); _cs = 1; } void blit( int x, int y, int width, int height, const int* colour ) { _cs = 0; _window( x, y, width, height ); for (int i = 0; i < width * height; i++ ) { _putp( colour[i] ); } _window( 0, 0, WIDTH, HEIGHT ); _cs = 1; } void bitblit( int x, int y, int width, int height, const char* bitstream ) { _cs = 0; _window( x, y, width, height ); for (int i = 0; i < height * width; i++ ) { int byte = i / 8; int bit = i % 8; int colour = ((bitstream[ byte ] << bit) & 0x80) ? _foreground : _background; _putp( colour ); } _window( 0, 0, _width, _height ); _cs = 1; } /** Screen width * * @return screen width [pixel] */ int width() { return WIDTH; } /** Screen height * * @return screen height [pixel] */ int height() { return HEIGHT; } /** Columns * * @return screen columns */ int columns() { return COLS; } /** Rows * * @return screen rows */ int rows() { return ROWS; } /** Power switch for OLED backlight * * @param sw argument can be MARMEX_OB_oled::ON or MARMEX_OB_oled::OFF */ void power( unsigned char sw ) { _power_pin = sw; } private: /** Command list for the OLED controller */ enum { SET_DISPLAY_MODE_ALL_OFF = 0xA4, SET_COMMAND_LOCK = 0xFD, SET_SLEEP_MODE_ON = 0xAE, FRONT_CLOCK_DRIVER_OSC_FREQ = 0xB3, SET_MUX_RATIO = 0xCA, SET_DISPAY_OFFSET = 0xA2, SET_DISPAY_START_LINE = 0xA1, SET_REMAP_COLOR_DEPTH = 0xA0, SET_GPIO = 0xB5, FUNCTION_SELECTION = 0xAB, SET_SEGMENT_LOW_VOLTAGE = 0xB4, SET_CONTRAST_CURRENT_FOR_COLOR_ABC = 0xC1, MASTER_CONTRAST_CURRENT_CONTROL = 0xC7, LOOKUP_TABLE_FOR_GRAYSCALE_PULSE_WIDTH = 0xB8, SET_RESET_PRECHARGE_PERIOD = 0xB1, ENHANCE_DRIVING_SCHEME_CAPABILITY = 0xB2, SET_PRECHARGE_VOLTAGE = 0xBB, SET_SECOND_PRECHARGE_VOLTAGE = 0xB6, SET_VCOMH_VOLTAGE = 0xBE, SET_DISPLAY_MODE_RESET = 0xA6, SET_COLUMN_ADDRESS = 0x15, SET_ROW_ADDRESS = 0x75, WRITE_RAM_COMMAND = 0x5C, SET_SLEEP_MODE_OFF = 0xAF }; #ifdef MARMEX_OB_SPI_8BIT_MODE void command( int value ) { int tmp = value & 0x00ff; _cs = 0; _spi.write( tmp >> 1 ); _spi.write( tmp << 7 ); _cs = 1; } void data( int value ) { int tmp = value & 0x00ff; tmp |= 0x0100; _cs = 0; _spi.write( tmp >> 1 ); _spi.write( tmp << 7 ); _cs = 1; } #else void command( int value ) { _cs = 0; _spi.write( value & 0xFF ); _cs = 1; } void data(int value) { _cs = 0; _spi.write( value | 0x100 ); _cs = 1; } #endif virtual void _window( int x, int y, int width, int height ) { int x1 = x + 0; int y1 = y + 0; int x2 = x1 + width - 1; int y2 = y1 + height - 1; command( SET_COLUMN_ADDRESS ); data( x1 ); data( x2 ); command( SET_ROW_ADDRESS ); data( y1 ); data( y2 ); command( WRITE_RAM_COMMAND ); } void window( int x, int y, int width, int height ) { _cs = 0; _window( x, y, width, height ); _cs = 1; } virtual void _putp( int colour ) { int cnv = 0; cnv = (colour >> 8) & 0xf800; cnv |= (colour >> 5) & 0x07e0; cnv |= (colour >> 3) & 0x001f; data( cnv >> 8); data( cnv ); } DigitalOut _power_pin; } ; #ifdef MARMEX_OB_SPI_8BIT_MODE #define MERMEX_OB_SPI_MODE_STR "8bit mode" #else #define MERMEX_OB_SPI_MODE_STR "9bit mode" #endif #endif // MBED_MARMEX_OB_OLED /* * history: * 0.5 (2011-Apr-07) : initial published version * 0.51 (2011-Apr-08) : a. "virtual" had been added on "_putp()" function definition to surpress warning when compiling (is this correct way?) * b. sample code (for Doxygen) is changed from new "main.cpp (ver 0.51)" */