//Function to Write Data on LCD
void lcd_wr_char(char letter)
{
char temp;
temp = letter;
temp = (temp & 0xF0);
lcd_port &= 0x0F;
lcd_port |= temp;
sbit(lcd_port,RS);
cbit(lcd_port,RW);
sbit(lcd_port,EN);
_delay_ms(5);
cbit(lcd_port,EN);
letter = letter & 0x0F;
letter = letter<<4;
lcd_port &= 0x0F;
lcd_port |= letter;
sbit(lcd_port,RS);
cbit(lcd_port,RW);
sbit(lcd_port,EN);
_delay_ms(5);
cbit(lcd_port,EN);
}
// Write 32 bits to display register and latch
void writeDisplayData(uint32_t data)
{
// shift out data
for (uint8_t i = 0; i < 4; i++)
{
// send byte over SPI
SPDR = data >> (8 * (3 - i));
// wait for transmission complete
while(!(SPSR & (1 << SPIF)));
}
// latch register data
sbit(OUTPORT(DISP_LATCH_PORT), DISP_LATCH_BIT);
_delay_us(10);
cbit(OUTPORT(DISP_LATCH_PORT), DISP_LATCH_BIT);
}
void Reed_Solomon::encode(const bvec &uncoded_bits, bvec &coded_bits)
{
int i, j, iterations = floor_i(static_cast<double>(uncoded_bits.length())
/ (k * m));
GFX mx(q, k), cx(q, n);
GFX r(n + 1, n - k);
GFX uncoded_shifted(n + 1, n);
GF mpow;
bvec mbit(k * m), cbit(m);
coded_bits.set_size(iterations * n * m, false);
if (systematic)
for (i = 0; i < n - k; i++)
uncoded_shifted[i] = GF(n + 1, -1);
for (i = 0; i < iterations; i++) {
//Fix the message polynom m(x).
for (j = 0; j < k; j++) {
mpow.set(q, uncoded_bits.mid((i * m * k) + (j * m), m));
mx[j] = mpow;
if (systematic) {
cx[j] = mx[j];
uncoded_shifted[j + n - k] = mx[j];
}
}
//Fix the outputbits cbit.
if (systematic) {
r = modgfx(uncoded_shifted, g);
for (j = k; j < n; j++) {
cx[j] = r[j - k];
}
}
else {
cx = g * mx;
}
for (j = 0; j < n; j++) {
cbit = cx[j].get_vectorspace();
coded_bits.replace_mid((i * n * m) + (j * m), cbit);
}
}
}
//Function to Write Command on LCD
void lcd_wr_command(unsigned char cmd)
{
unsigned char temp;
temp = cmd;
temp = temp & 0xF0;
lcd_port &= 0x0F;
lcd_port |= temp;
cbit(lcd_port,RS);
cbit(lcd_port,RW);
sbit(lcd_port,EN);
_delay_ms(5);
cbit(lcd_port,EN);
cmd = cmd & 0x0F;
cmd = cmd<<4;
lcd_port &= 0x0F;
lcd_port |= cmd;
cbit(lcd_port,RS);
cbit(lcd_port,RW);
sbit(lcd_port,EN);
_delay_ms(5);
cbit(lcd_port,EN);
}
//Function to Reset LCD
void lcd_set_4bit()
{
_delay_ms(1);
cbit(lcd_port,RS); //RS=0 --- Command Input
cbit(lcd_port,RW); //RW=0 --- Writing to LCD
lcd_port = 0x30; //Sending 3
sbit(lcd_port,EN); //Set Enable Pin
_delay_ms(5); //Delay
cbit(lcd_port,EN); //Clear Enable Pin
_delay_ms(1);
cbit(lcd_port,RS); //RS=0 --- Command Input
cbit(lcd_port,RW); //RW=0 --- Writing to LCD
lcd_port = 0x30; //Sending 3
sbit(lcd_port,EN); //Set Enable Pin
_delay_ms(5); //Delay
cbit(lcd_port,EN); //Clear Enable Pin
_delay_ms(1);
cbit(lcd_port,RS); //RS=0 --- Command Input
cbit(lcd_port,RW); //RW=0 --- Writing to LCD
lcd_port = 0x30; //Sending 3
sbit(lcd_port,EN); //Set Enable Pin
_delay_ms(5); //Delay
cbit(lcd_port,EN); //Clear Enable Pin
_delay_ms(1);
cbit(lcd_port,RS); //RS=0 --- Command Input
cbit(lcd_port,RW); //RW=0 --- Writing to LCD
lcd_port = 0x20; //Sending 2 to initialise LCD 4-bit mode
sbit(lcd_port,EN); //Set Enable Pin
_delay_ms(5); //Delay
cbit(lcd_port,EN); //Clear Enable Pin
}
int main(void)
{
// init hardware setup
init();
// setup temperature resolution
// write temperature register pointer
i2c_start(TEMPSENS_ADDRESS, I2C_WRITE);
i2c_write(0x01);
i2c_write(0b01100000);
i2c_stop();
while(1)
{
// change mode by pressed button
if (button1Pressed())
{
mode = MODE_1;
}
else if (button2Pressed())
{
mode = MODE_2;
}
else if (button3Pressed())
{
mode = MODE_3;
}
// mode1
if (mode == MODE_1)
{
// read analog value from potentiometer
uint32_t pot = readAnalog(POT_CHANNEL);
pot *= 4888;
pot += 500;
pot /= 1000;
if (++mydelay >= 10)
{
writeDisplayNumber(pot, 0);
mydelay = 0;
}
// led1 on
sbit(OUTPORT(LED1_PORT), LED1_BIT);
}
else
{
// led1 off
cbit(OUTPORT(LED1_PORT), LED1_BIT);
}
// mode2
if (mode == MODE_2)
{
int16_t temp = readTemperature();
writeDisplayTemp(temp, 2);
// led2 on
sbit(OUTPORT(LED2_PORT), LED2_BIT);
}
else
{
// led2 off
cbit(OUTPORT(LED2_PORT), LED2_BIT);
}
// show potentiometer value
if (mode == MODE_3)
{
// led3 on
sbit(OUTPORT(LED3_PORT), LED3_BIT);
mode3();
/*
if (mydelay < 12)
{
// turn-on buzzer
// frequency 2kHz
ICR1 = 2000;
OCR1A = 1000;
// write to display
writeDisplayData(convertBcd(DIGIT_MINUS, DIGIT_MINUS, DIGIT_BLANK, DIGIT_BLANK, 255));
}
else
{
// turn-on buzzer
// frequency 2kHz
ICR1 = 4000;
OCR1A = 2000;
// write to display
writeDisplayData(convertBcd(DIGIT_BLANK, DIGIT_BLANK, DIGIT_MINUS, DIGIT_MINUS, 255)); }
if (++mydelay >= 25) mydelay = 0;
*/
}
else
{
// turn-off buzzer
ICR1 = 0;
// led3 off
cbit(OUTPORT(LED3_PORT), LED3_BIT);
}
// wait until all mode buttons are released
while (button1Pressed() || button2Pressed() || button3Pressed());
_delay_ms(20);
}
}
