/**
* Возврат курсора
*
* Возврат курсора в левый верхний угол экрана (координаты
* X: 0 и Y: 0)
*/
void lcd_creturn()
{
while(lcd_bfstate()) {}
write_max(DATA_IND_ADDR, 0x02);
write_max(C_IND_ADDR, 0x01);
write_max(C_IND_ADDR, 0x00);
return;
}
void lcd_setDdramAddress(const unsigned char addr) {
//set ddram addr, nothing to say
while(lcd_getBusyFlagState()) {}
write_max(DATA_IND, addr | 0x80);
write_max(C_IND, 0x01);
write_max(C_IND, 0x00);
return;
}
/**
* Установка адреса в DDRAM
*/
void lcd_set_ddram_addr(const unsigned char addr)
{
while(lcd_bfstate()) {}
write_max(DATA_IND_ADDR, addr | 0x80);
write_max(C_IND_ADDR, 0x01); /* RS=0 RW=0 E=1 */
write_max(C_IND_ADDR, 0x00);/* RS=0 RW=0 E=0 */
return;
}
unsigned char lcd_getDdramAddress(void) {
unsigned char retval = 0x00;
write_max(C_IND, 0x03); // RS=0 RW=1 E=1
retval = read_max(DATA_IND);
write_max(C_IND, 0x02); // RS=0 RW=1 E=0
retval = retval & 0x7f;
return retval;
}
/**
* Значение BF
*
* Функция возвращает значение флага занятости - BF
*/
unsigned char lcd_bfstate()
{
unsigned char retval = 0x00;
write_max(C_IND_ADDR, 0x03); /* RS=0 RW=1 E=1 */
retval = read_max(DATA_IND_ADDR);
write_max(C_IND_ADDR, 0x02); /* RS=0 RW=1 E=0 */
retval = retval >> 7;
return retval;
}
void init_kb()
{
set_vector(IE0_ADDRESS, (void*)kb_isr);
write_max(ENA, 0x60); // enable keyboard interrupt as INT0
EX0 = 1; // enable INT0
write_max(KB, 0);
TMOD |= 0x01;
TCON |= 0x11;
init_sound();
}
unsigned char lcd_getBusyFlagState(void) {
//get busy flag
unsigned char retval = 0x00;
write_max(C_IND, 0x03); // RS=0 RW=1 E=1
retval = read_max(DATA_IND);
write_max(C_IND, 0x02); // RS=0 RW=1 E=0
retval = retval >> 7;
return retval;
}
/**
* Вывод символа на дисплей
*/
void lcd_putchar(const char c)
{
unsigned char ddram_addr = lcd_acstate();
if ((ddram_addr > 0x0f) && (ddram_addr < 0x40))
{
lcd_set_ddram_addr(0x40);
}
while(lcd_bfstate()) {}
write_max(DATA_IND_ADDR, c);
write_max(C_IND_ADDR, 0x05);
write_max(C_IND_ADDR, 0x04);
return;
}
void lcd_display(unsigned char buf[][])
{
unsigned char i, j;
for(i = 0; i < 2; i++)
{
for(j = 0; j < 16; j++)
{
lcd_set_ddram_addr(j + 0x40 * i);
while(lcd_bfstate()) {}
write_max(DATA_IND_ADDR, buf[i][j]);
write_max(C_IND_ADDR, 0x05);
write_max(C_IND_ADDR, 0x04);
}
}
}
void lcd_putCharNow(const char charData) {
unsigned char ddramAddress = lcd_getDdramAddress();
//if first string owerflows - write on second
if ((ddramAddress > 0x0f) && (ddramAddress < 0x40)) {
lcd_setDdramAddress(0x40);
}
if(_shouldBreakTheLine){
_shouldBreakTheLine=0;
lcd_clear();
}
if(charData=='\n'){
_shouldBreakTheLine=1;
return;
}
while(lcd_getBusyFlagState()) {}
write_max(DATA_IND, charData);
write_max(C_IND, 0x05);
write_max(C_IND, 0x04);
return;
}
static void scan_col(uint8_t col)
{
uint8_t row;
uint8_t kb_reg;
select_col(col);
kb_reg = read_max(KB);
write_max(KB, 0);
for (row = 0; row < 4; row++)
update_key(col, row, kb_reg);
}
/**
* Функция для очистки экрана ЖКИ
*
* В данной функции происходит очистка экрана и
* возврат курсора в начало строки.
*/
void lcd_clear()
{
while(lcd_bfstate()) {}
write_max(DATA_IND_ADDR, 0x01);
write_max(C_IND_ADDR, 0x01);
write_max(C_IND_ADDR, 0x00);
while(lcd_bfstate()) {}
write_max(DATA_IND_ADDR, 0x06);
write_max(C_IND_ADDR, 0x01);
write_max(C_IND_ADDR, 0x00);
while(lcd_bfstate()) {}
write_max(DATA_IND_ADDR, 0x0f);
write_max(C_IND_ADDR, 0x01);
write_max(C_IND_ADDR, 0x00);
return;
}
static void select_col(uint8_t col)
{
write_max(KB, ~(0x01 << col));
}
void lcd_clear(void) {
//clear
while(lcd_getBusyFlagState()) {}
write_max(DATA_IND, 0x01);
write_max(C_IND, 0x01);
write_max(C_IND, 0x00);
//shift and direction
while(lcd_getBusyFlagState()) {}
write_max(DATA_IND, 0x06);
write_max(C_IND, 0x01);
write_max(C_IND, 0x00);
//enable cursor, display, and blink
while(lcd_getBusyFlagState()) {}
write_max(DATA_IND, 0x0f);
write_max(C_IND, 0x01);
write_max(C_IND, 0x00);
lcd_putCharNow('0');
while(lcd_getBusyFlagState()) {}
write_max(DATA_IND, 0x02);
write_max(C_IND, 0x01);
write_max(C_IND, 0x00);
}
int recieve_string (void)
{
unsigned char start, stop;
unsigned char buff;
unsigned int i = 0;
unsigned short kol_vo_not;
unsigned char good_or_bad;
unsigned char num_page;
start = read_max(2, 0x102);
stop = read_max(2, 0x103);
buff = SBUF;
RI = 0;
if (!if_ri())
return 0;
buff = SBUF;
RI = 0;
if (!(buff & 0x80))
{
good_or_bad = buff & 0x40;
kol_vo_not = (buff & 0x3f) << 8;
if (!if_ri())
return 0;
buff = SBUF;
RI = 0;
kol_vo_not += buff;
while (kol_vo_not)
{
if (!if_ri())
return 0;
buff = SBUF;
RI = 0;
if ((buff != start) && (buff != stop))
{
write_max(4, 0x102+i, buff);
i++;
kol_vo_not--;
}
}
write_max(4, 0x102+i, 0);
if (good_or_bad)
{
num_page = 5;
is_good_melody = 1;
}
else
{
num_page = 6;
is_bad_melody = 1;
}
init_timer();
str_to_notes (num_page);
play_melody (num_page);
init_uart();
}
else
{
init_timer();
if (buff & 0x40)
{
write_sram(2, 0x00, "Оки-доки! ");
read_sram_to_lsd(2);
if (is_good_melody)
play_melody (5);
else
delay(65535);
}
else
{
write_sram(2, 0x00, "Фигня какая-то... ");
read_sram_to_lsd(2);
if (is_bad_melody)
play_melody (6);
else
delay(65535);
}
write_sram(2, 0x00, "Введите пароль: ");
read_sram_to_lsd(2);
goto_x(0x40);
init_uart();
}
return 0;
}