char lcd_getc() {
char value;
//lcd_gotoxy(x,y);
while ( bit_test(lcd_read_byte(),7) ); // wait until busy flag is low
lcd_rs=1;
value = lcd_read_byte();
lcd_rs=0;
return(value);
}
char lcd_getc(BYTE x, BYTE y)
{
char value;
lcd_gotoxy(x,y);
while ( bit_test(lcd_read_byte(),7) ); // wait until busy flag is low
lcd_output_rs(1);
value = lcd_read_byte();
lcd_output_rs(0);
return(value);
}
int8 lcd_getc(int8 x, int8 y){
int8 value;
lcd_gotoxy(x,y);
while((lcd_read_byte()&0x80)==0x80);
RSPIN=1;
value = lcd_read_byte();
RSPIN=0;
return(value);
}
char lcd_getc(char x, char y)
{
char value;
lcd_gotoxy(x,y);
// Wait until busy flag is low.
while(bit_test(lcd_read_byte(),7));
output_high(LCD_RS);
value = lcd_read_byte();
output_low(lcd_RS);
return(value);
}
//----------------------------------------
// Send a byte to the LCD.
void lcd_send_byte(char address, char n)
{
output_low(LCD_RS);
#ifdef USE_LCD_RW
while(bit_test(lcd_read_byte(),7)) ;
#else
delay_us(60);
#endif
if(address)
output_high(LCD_RS);
else
output_low(LCD_RS);
delay_cycles(1);
#ifdef USE_LCD_RW
output_low(LCD_RW);
delay_cycles(1);
#endif
output_low(LCD_E);
lcd_send_nibble(n >> 4);
lcd_send_nibble(n & 0xf);
}
int lcd_set_pixel( struct lcd_pixel * pix )
{
int y=0;
int val;
int bit=0;
int v;
if ( pix->y >= (LCD_ROWS*8) ) {
return -EINVAL;
}
if ( pix->x >= LCD_COLS ) {
return -EINVAL;
}
if (pix->y) {
y = (pix->y/8);
}
bit = pix->y - (y*8);
// set dram pointer
lcd_set_pos( y, pix->x );
lcd_read_dummy();
val = lcd_read_byte();
v = pix->v;
// invertieren
if ( v == 2 ) {
v = (((~val)>>bit)&1);
}
static inline int check_busy_flag()
{
CLR_RS;
SET_RW;
DATA_IN;
return lcd_read_byte() & (1<<7);
}
void lcd_send_byte(int8 address, int8 n){
RSPIN=0;
#ifdef USE_RW
while((lcd_read_byte()&0x80)==0x80);
#else
_delay_100us();
#endif
TRIS_DATA_PIN_4=0;
TRIS_DATA_PIN_5=0;
TRIS_DATA_PIN_6=0;
TRIS_DATA_PIN_7=0;
if(address)
RSPIN=1;
else
RSPIN=0;
Nop();
#ifdef USE_RW
RWPIN=0;
Nop();
#endif
lcd_send_nibble(n >> 4);
lcd_send_nibble(n & 0xf);
}
char lcd_getc( byte x, byte y) {
char value;
lcd_gotoxy(x,y);
lcd.rs=1;
value = lcd_read_byte();
lcd.rs=0;
return(value);
}
static void lcd_wait_busy(void)
{
uint8_t bt;
LCD_CTRL_PORT &= ~(1 << LCD_CTRL_RS);
_delay_us(10);
do {
bt = lcd_read_byte();
} while (bt & 0x80 == 0x80);
}
void lcd_send_byte(BYTE address, BYTE n)
{
lcd_output_rs(0);
while ( bit_test(lcd_read_byte(),7) ) ;
lcd_output_rs(address);
delay_cycles(1);
lcd_output_rw(0);
delay_cycles(1);
lcd_output_enable(0);
lcd_send_nibble(n >> 4);
lcd_send_nibble(n & 0xf);
}
void lcd_send_byte( BYTE address, BYTE n ) {
lcd.rs = 0;
while ( bit_test(lcd_read_byte(),7) ) ;
lcd.rs = address;
delay_cycles(1);
lcd.rw = 0;
delay_cycles(1);
lcd.enable = 0;
lcd_send_nibble(n >> 4);
lcd_send_nibble(n & 0xf);
}
void dsp_strength_bar( int8 end_signal_char_index,
int8 width, int8 value )
{
int8 mark_pos = value/STRENGTH_VALUES_PER_CHAR;
int8 mark_glyph = value-(mark_pos*STRENGTH_VALUES_PER_CHAR);
lcd_output_rs(0);
int8 current_address = lcd_read_byte() & 0x7F;
dsp_create_signal_character( end_signal_char_index, mark_glyph );
lcd_send_byte( 0, 0x80|current_address ); //Restore DDRAM address
int8 i;
for( i=0; i<mark_pos; ++i ) {
lcd_putc(CHAR_FULL_STRENGTH);
}
if ( mark_pos != width ) {
lcd_putc(end_signal_char_index);
}
for( i=mark_pos+1; i<width; ++i ) {
lcd_putc(' ');
}
}
/*
* Display a range bar with:
* - 3 possibles values per position in mid characters
* - 2 possibles values per position in start and end characters
* Note: Only one range line is allowed.
*/
void dsp_range_line( int8 start_char_index,
int8 mid_char_index,
int8 end_char_index,
int8 width, int16 value,
int16 max_value )
{
int8 range_positions = (3*(width-2)) + 2 + 2;
int8 mark = math_change_range(value, max_value, range_positions);
int8 start_glyph;
int8 end_glyph;
int8 mark_glyph;
int8 mark_pos;
if ( mark < 2 ) { //Mark at start range
mark_pos = 0;
mark_glyph = 0xFF;
start_glyph = mark;
end_glyph = 2;
}
else if ( mark > (range_positions-2) ) { //Mark at end range
mark_pos = 0;
mark_glyph = 0xFF;
start_glyph = 2;
end_glyph = (range_positions-mark);
}
else if ( mark == (range_positions-2) ) { //Mark just before end range
mark_pos = 0;
mark_glyph = 0xFF;
start_glyph = 2;
end_glyph = 1;
}
else { //Mark at mid range
mark -= 2;
mark_pos = mark/3;
mark_glyph = mark-(mark_pos*3);
start_glyph = 2;
end_glyph = 2;
}
lcd_output_rs(0);
int8 current_address = lcd_read_byte() & 0x7F;
// Set glyphs
dsp_write_mid_glyph( start_char_index,
CHAR_START_RANGE_MID_GLYPH[start_glyph] );
dsp_write_mid_glyph( end_char_index,
CHAR_END_RANGE_MID_GLYPH[end_glyph] );
if ( mark_glyph != 0xFF ) {
dsp_write_mid_glyph( mid_char_index,
CHAR_RANGE_POSITION_GLYPH[mark_glyph] );
}
lcd_send_byte( 0, 0x80|current_address ); //Restore DDRAM address
// Write range line
int8 i;
lcd_putc(start_char_index);
for( i=0; i<mark_pos; ++i ) {
lcd_putc('-');
}
lcd_putc( (mark_glyph==0xFF) ? '-' : mid_char_index);
for( i=mark_pos+1; i<(width-2); ++i ) {
lcd_putc('-');
}
lcd_putc(end_char_index);
}