uint8_t lcd_waitbusy() {
__IO uint8_t c;
//wait until the DB7 signal is gone
while( (c=lcd_read(0)) & (1<<LCD_BUSY));
Delay(16);
//return address counter
return lcd_read(0);
}
/*************************************************************************
loops while lcd is busy, returns address counter
*************************************************************************/
static uint8_t lcd_waitbusy(void)
{
register uint8_t c;
/* wait until busy flag is cleared */
while ( (c=lcd_read(0)) & (1<<LCD_BUSY)) {}
/* the address counter is updated 4us after the busy flag is cleared */
delay(2);
/* now read the address counter */
return (lcd_read(0)); // return address counter
}/* lcd_waitbusy */
void lcd_plotpixel(unsigned char rx, unsigned char ry)
{
unsigned char data;
_lcd_waitbusy();
// select the correct side
if (rx & 64)
lcd_selectside(RIGHT);
else
lcd_selectside(LEFT);
lcd_setpage( ry >> 3);
lcd_setxaddr( rx & 0b00111111);
data = lcd_read(); // dummy read needed here
data = lcd_read();
lcd_setxaddr( rx & 0b00111111);
lcd_write (data | (1 << (ry & 0b111)));
}
static void lcd_waitbusy(void)
{
register uint8_t c;
unsigned int ul1=0;
// Wait Until Busy Flag is Cleared
while ( ((c=lcd_read(0)) & (1<<LCD_BUSY)) && ul1<((F_CPU/16384>=16)?F_CPU/16384:16))
ul1++;
}
uint8_t lcd_state_read(uint8_t chip)
{
wait_while_busy(chip);
uint8_t temp_state;
HIGH(RW_PORT, RW_PIN);
LOW(RS_PORT, RS_PIN);
temp_state = lcd_read();
return temp_state;
}
uint8_t lcd_data_read(uint8_t chip)
{
wait_while_busy(chip);
uint8_t data;
HIGH(RW_PORT, RW_PIN);//read
HIGH(RS_PORT, RS_PIN);//data
data = lcd_read();
return data;
}
static uint16_t LCD_ReadDat(){
cs::set( 0 );
rs::set( 1 );
wr::set( 1 );
rd::set( 0 );
int temp = lcd_read();
rd::set( 1 );
cs::set( 1 );
return temp;
}
static inline unsigned short rd_dat (void) {
unsigned short val = 0;
LCD_RS(1)
LCD_WR(1)
//LCD_RD(0);
val = lcd_read();
//LCD_RD(1);
return val;
}
// wait for busy flag to go away
void lcd_busy_wait(void) {
lcd_set_instruction();
lcd_set_port_read();
lcd_set_read();
lcd_set_enable_on();
LCD_DELAY;
while (lcd_read() & LCD_GET_BF) {
lcd_set_enable_off();
LCD_DELAY;
LCD_DELAY;
lcd_set_enable_on();
LCD_DELAY;
LCD_DELAY;
}
lcd_set_enable_off();
}
// generic get
uint8_t lcd_get(uint8_t type) {
uint8_t data;
lcd_busy_wait();
lcd_set_port_read();
lcd_write(0xFF);
if (type) {
lcd_set_data();
} else {
lcd_set_instruction();
}
lcd_set_read();
lcd_set_enable_on();
LCD_DELAY;
LCD_DELAY;
data = lcd_read();
lcd_set_enable_off();
return data;
}
/* waits until busy flag is not set, i.e. the next instruction can be sent */
static void waitbusy(void)
{
while (lcd_read(0) & BF_MASK)
;
}
uint8_t lcd_getc(void)
{
return lcd_read(1);
}
uint8_t lcd_status() {
return lcd_read(LCD_RS_COMMAND);
}
void lcd_sendstat(u8_t *x){
for(int i = 0; x[i] != '\0'; i++){
RS(1); // Rs = 1
lcd_read(x[i]);
}
}
void lcd_senddata(unsigned char cmd){
RS(1); // Rs = 1
lcd_read(cmd);
}
void lcd_sendcmd(unsigned char cmd){
RS(0); // Rs = 0
lcd_read(cmd);
}
static uint8_t lcd_read_cmd( void )
{
RS_DISABLE;
return lcd_read();
}
static uint8_t lcd_read_data( void )
{
RS_ENABLE;
return lcd_read();
}
