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Ignore whitespace Rev 330 → Rev 331

/C-OSD/trunk/max7456_software_spi.h
0,0 → 1,125
/****************************************************************************
* Copyright (C) 2009 by Claas Anders "CaScAdE" Rathje *
* admiralcascade@gmail.com *
* Project-URL: http://www.mylifesucks.de/oss/c-osd/ *
* *
* 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. *
* *
* 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. *
****************************************************************************/
 
/* ##########################################################################
* Software SPI to communicate with MAX7456
* ##########################################################################*/
#define MAX_CS_HIGH PORTA |= (1 << PA1);
#define MAX_CS_LOW PORTA &= ~(1 << PA1);
#define MAX_SDIN_HIGH PORTA |= (1 << PA2);
#define MAX_SDIN_LOW PORTA &= ~(1 << PA2);
#define MAX_SCLK_HIGH PORTA |= (1 << PA3);
#define MAX_SCLK_LOW PORTA &= ~(1 << PA3);
#define MAX_RESET_HIGH PORTA |= (1 << PA5);
#define MAX_RESET_LOW PORTA &= ~(1 << PA5);
 
 
/* ##########################################################################
* MAX7456 SPI & Display stuff
* ##########################################################################*/
 
/**
* Send a byte through SPI
*/
void spi_send(uint8_t);
 
/**
* Send <byte> to <address> of MAX7456
*/
void spi_send_byte(uint8_t, uint8_t);
 
/**
* write a <character> to <address> of MAX7456 display memory
*/
void write_char(uint16_t, char);
 
/**
* write a character <attribute> to <address> of MAX7456 display memory
*/
void write_char_att(uint16_t, char);
/**
* write a <character> at <x>/<y> to MAX7456 display memory
*/
void write_char_xy(uint8_t, uint8_t, char);
/**
* write a character <attribute> at <x>/<y> to MAX7456 display memory
*/
void write_char_att_xy(uint8_t, uint8_t, char attribute);
 
/**
* clear display by writing blank characters all over it
*/
void clear(void);
 
/**
* write an ascii <character> to <address> of MAX7456 display memory
*/
void write_ascii_char(uint16_t, char);
 
/**
* write an ascii <string> at <x>/<y> to MAX7456 display memory
*/
void write_ascii_string(uint8_t, uint8_t, char*);
 
/**
* Write only the last three digits of a <number> at <x>/<y> to MAX7456
* display memory. takes full 16bit numbers as well for stuff
* like compass only taking three characters (values <= 999)
*/
void write_3digit_number_u(uint8_t, uint8_t, uint16_t);
 
/**
* Write only the last two digits of a number at <x>/<y> to MAX7456
* display memory. takes full 16bit numbers as well for stuff
* like seconds only taking two characters (values <= 99)
* Since this is used for seconds only and it looks better, there
* is a trading 0 attached
*/
void write_2digit_number_u(uint8_t, uint8_t, uint16_t);
/**
* write a unsigned number as /10th at <x>/<y> to MAX7456 display memory
*/
void write_number_u_10th(uint8_t, uint8_t, uint16_t);
 
/**
* write a unsigned number at <x>/<y> to MAX7456 display memory
*/
void write_number_u(uint8_t, uint8_t, uint16_t);
 
/**
* write a signed number at <x>/<y> to MAX7456 display memory
*/
void write_number_s(uint8_t, uint8_t, int16_t);
 
/**
* write <seconds> as human readable time at <x>/<y> to MAX7456 display mem
*/
void write_time(uint8_t, uint8_t, uint16_t);
 
/**
* for testing write all chars to screen
*/
void write_all_chars();
 
/**
* let the MAX7456 learn a new character at <number>
* with <data>.
*/
void learn_char(uint8_t, unsigned char*);