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Ignore whitespace Rev 489 → Rev 514

/C-OSD/trunk/max7456_software_spi.c
21,6 → 21,7
#include <avr/io.h>
#include <util/delay.h>
#include <avr/pgmspace.h>
#include "main.h"
#include "max7456_software_spi.h"
 
/* ##########################################################################
56,6 → 57,7
MAX_CS_HIGH
}
 
 
/**
* write a <character> to <address> of MAX7456 display memory
*/
65,7 → 67,41
spi_send_byte(0x07, character); // DMDI
}
 
 
/**
* clear display memory
* (also sets 8bit mode)
*/
void clear(void) {
/*uint16_t memory_address = 0;
for (unsigned int a = 0; a < 480; a++) {
write_char(memory_address++, 0);
}*/
// clear all display-mem (DMM)
spi_send_byte(0x04, 0b01000100);
 
// clearing takes 12uS according to maxim so lets wait longer
_delay_us(20);
}
 
 
/**
* for testing write all chars to screen
*/
void write_all_chars() {
uint16_t x = 3, y = 2, t = 0;
while (t < 256) {
write_char(x++ + y*30, t++);
if (x > 25) {
y++;
x = 3;
}
}
}
 
#if !(ALLCHARSDEBUG|(WRITECHARS != -1))
 
/**
* write a character <attribute> to <address> of MAX7456 display memory
*/
void write_char_att(uint16_t address, char attribute) {
93,19 → 129,26
}
 
/**
* clear display memory
* (also sets 8bit mode)
* let the MAX7456 learn a new character at <number>
* with <data>.
*/
void clear(void) {
/*uint16_t memory_address = 0;
for (unsigned int a = 0; a < 480; a++) {
write_char(memory_address++, 0);
}*/
// clear all display-mem (DMM)
spi_send_byte(0x04, 0b01000100);
void learn_char(uint8_t number, unsigned char* data) {
// select character to write (CMAH)
spi_send_byte(0x09, number);
 
// clearing takes 12uS according to maxim so lets wait longer
_delay_us(20);
for (uint8_t i = 0; i < 54; i++) {
// select 4pixel byte of char (CMAL)
spi_send_byte(0x0A, i);
 
// write 4pixel byte of char (CMDI)
spi_send_byte(0x0B, data[i]);
}
 
// write to the NVM array from the shadow RAM (CMM)
spi_send_byte(0x08, 0b10100000);
 
// according to maxim writing to nvram takes about 12ms, lets wait longer
_delay_ms(120);
}
 
/**
320,43 → 363,6
}
 
/**
* for testing write all chars to screen
*/
void write_all_chars() {
uint16_t x = 3, y = 2, t = 0;
while (t < 256) {
write_char_xy(x++, y, t++);
if (x > 25) {
y++;
x = 3;
}
}
}
 
/**
* let the MAX7456 learn a new character at <number>
* with <data>.
*/
void learn_char(uint8_t number, unsigned char* data) {
// select character to write (CMAH)
spi_send_byte(0x09, number);
 
for (uint8_t i = 0; i < 54; i++) {
// select 4pixel byte of char (CMAL)
spi_send_byte(0x0A, i);
 
// write 4pixel byte of char (CMDI)
spi_send_byte(0x0B, data[i]);
}
 
// write to the NVM array from the shadow RAM (CMM)
spi_send_byte(0x08, 0b10100000);
 
// according to maxim writing to nvram takes about 12ms, lets wait longer
_delay_ms(120);
}
 
/**
* wirte a <position> at <x>/<y> assuming it is a gps position for long-/latitude
*/
void write_gps_pos(uint8_t x, uint8_t y, int32_t position) {
375,3 → 381,5
write_ndigit_number_u(x + 8, y, (uint16_t) position, 100, 1);
write_char_xy(x + 11, y, 0xD0); // degree symbol
}
 
#endif