//*************************************************************************
// 初始化LCD
//*************************************************************************
void LCD_initial()
{
PSB_SET; //液晶并口方式
RST_SET; //复位脚RST置高
lcd_write_instruction(FUN_MODE); //显示模式设置
delay_ms(5);
lcd_write_instruction(DISPLAY_ON); //显示开
delay_ms(5);
lcd_write_instruction(CLEAR_SCREEN); //清屏
delay_ms(5);
lcd_write_instruction(CURSE_ADD);
delay_ms(5);
//配置时钟
TACTL |= TASSEL_1 + ID_0 + MC_1;
TACCR0 = 100000;
CCTL0 = CCIE;
buffer_ptr = lcd_buffer;
is_show_lcd_screen = 1;
is_lcd_message = 0;
}
//*************************************************************************
// 显示一行数据
//*************************************************************************
void LCD_displayCgromLine(uchar line, char *hz)
{
uchar address = 0x80;
assert(line < 2);
switch(line)
{
case 0:
address = 0x80;
break;
case 1:
address = 0x90;
break;
}
lcd_write_instruction(address);
delay_ms(5);
while(*hz != '\0')
{
LCD_write_data(*hz);
hz++;
delay_ms(5);
}
}
//*************************************************************************
// LCD清屏
//*************************************************************************
void LCD_cls()
{
lcd_write_instruction(0x01);
delay_ms(5);
}
int main(void)
{
memset( spectrum, 0, sizeof(spectrum) );
memset( spectrum_history, 0, sizeof(spectrum) );
init();
uint16_t cycles_till_reset_x = LCD_RESET_ADDR_CYCLES;
while(1)
{
if( sleeping )
{
sleepcycles++;
if( backlight_task_scaler++ >= 75 )
{
backlight_task(-1);
backlight_task_scaler = 0;
}
if( sleeping == 3 )
go_to_sleep();
else if( sleeping == 2 )
wake_up();
else // sleeping == 1
{
SMCR = _BV(SM0) | _BV(SE);
asm volatile( "sleep\n\t" );
}
}
else
{
backlight_task_scaler = 0;
backlight_task(-1);
// Apply window function and store in butterfly array
fft_input( capture, bfly );
// Execute forier transform
fft_execute( bfly );
// Bit reversal algorithm from butterfly array to output array
fft_output( bfly, spectrum );
// Do exponential/FIR filtering with history data
exp_average( spectrum, spectrum_history );
#ifdef DISPLAY_TEST_PATTERN
uint8_t *sp = spectrum;
uint8_t v = 5;
uint8_t k = sizeof(spectrum)/sizeof(uint8_t);
while( k-- )
{
*sp = v;
v++;
if( v > 38 )
v = 5;
sp++;
}
long t = 100000;
while(t--)
{
asm volatile("nop");
}
#else
#ifdef BLANK_LEFT_TWO_BARS
spectrum[0] = spectrum[1] = 0;
#endif
#endif
avc_task( spectrum );
if( --cycles_till_reset_x <= 0 )
{
cycles_till_reset_x = LCD_RESET_ADDR_CYCLES;
lcd_write_instruction( LCD_ADDR | 0, CHIP1 );
lcd_write_instruction( LCD_ADDR | 0, CHIP2 );
}
fastlcd( spectrum );
loopnum++;
}
}