(root)/C-OSD/trunk/max7456_software_spi.h - Rev 2536
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/****************************************************************************
* Copyright (C) 2009-2016 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. *
****************************************************************************/
#ifndef _MAX7456_SOFTWARE_SPI_H
#define _MAX7456_SOFTWARE_SPI_H
/* ##########################################################################
* 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 Register definitions
* ##########################################################################*/
#define MAX7456_REG_READ_OFFSET 0x80
#define MAX7456_VM0 0x00
#define MAX7456_VM1 0x01
#define MAX7456_HOS 0x02
#define MAX7456_VOS 0x03
#define MAX7456_DMM 0x04
#define MAX7456_DMAH 0x05
#define MAX7456_DMAL 0x06
#define MAX7456_DMDI 0x07
#define MAX7456_CMM 0x08
#define MAX7456_CMAH 0x09
#define MAX7456_CMAL 0x0A
#define MAX7456_CMDI 0x0B
#define MAX7456_OSDM 0x0C
#define MAX7456_RB0 0x10
#define MAX7456_RB1 0x11
#define MAX7456_RB2 0x12
#define MAX7456_RB3 0x13
#define MAX7456_RB4 0x14
#define MAX7456_RB5 0x15
#define MAX7456_RB6 0x16
#define MAX7456_RB7 0x17
#define MAX7456_RB8 0x18
#define MAX7456_RB9 0x19
#define MAX7456_RB10 0x1A
#define MAX7456_RB11 0x1B
#define MAX7456_RB12 0x1C
#define MAX7456_RB13 0x1D
#define MAX7456_RB14 0x1E
#define MAX7456_RB15 0x1F
#define MAX7456_OSDBL 0x6C
// READ-ONLY REGs
#define MAX7456_STAT 0xA0
#define MAX7456_DMDO 0xB0
#define MAX7456_CMDO 0xC0
/* ##########################################################################
* 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 memory
* (also sets 8bit mode)
*/
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 an ascii <string> with lenght <len> at <x>/<y> to MAX7456 display memory
*/
void write_ascii_string_len(uint8_t x, uint8_t y, char *string, uint8_t len);
/**
* write an ascii <string> from progmen at <x>/<y> to MAX7456 display memory
*/
void write_ascii_string_pgm(uint8_t, uint8_t, const char*);
/**
* write an <string> from progmen at <x>/<y> downwards to MAX7456 display memory
*/
void write_string_pgm_down(uint8_t, uint8_t, const char*, uint8_t);
/**
* Write a unsigned <number> at <x>/<y> to MAX7456 display memory
* <length> represents the length to rightbound the number
* <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7
*/
void write_ndigit_number_u(uint8_t, uint8_t, uint16_t, int16_t, uint8_t);
/**
* Write a signed <number> at <x>/<y> to MAX7456 display memory
* <length> represents the length to rightbound the number
* <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7
*/
void write_ndigit_number_s(uint8_t, uint8_t, int16_t, int16_t, uint8_t);
/**
* Write a unsigned <number> at <x>/<y> to MAX7456 display memory as /10th of value
* <length> represents the length to rightbound the number
* <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7
*/
void write_ndigit_number_u_10th(uint8_t, uint8_t, uint16_t, int16_t, uint8_t);
/**
* Write a signed <number> at <x>/<y> to MAX7456 display memory as /10th of value
* <length> represents the length to rightbound the number
* <pad> = 1 will cause blank spaced to be filled up with zeros e.g. 007 instead of 7
*/
void write_ndigit_number_s_10th(uint8_t, uint8_t, int16_t, int16_t, uint8_t);
/**
* write <seconds> as human readable time at <x>/<y> to MAX7456 display mem
*/
void write_time(uint8_t, uint8_t, uint16_t);
#if (ALLCHARSDEBUG|(WRITECHARS != -1))
/**
* 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*);
#endif
/**
* wirte a <position> at <x>/<y> assuming it is a gps position for long-/latitude
*/
void write_gps_pos(uint8_t, uint8_t, int32_t);
#endif