| 0,0 → 1,145 |
|---|
| // Template - Roman Pavelka, 2011 |
| // written for atmega8 |
| |
| #define F_CPU 16000000 |
| #define BAUD 1000000 |
| //#define MYUBRR F_CPU/8/BAUD-1 |
| #define MYUBRR 1 |
| |
| #include <avr/io.h> |
| #include <avr/interrupt.h> |
| #include <util/delay.h> |
| |
| #include "./libs/usart.h" |
| #include "./libs/spi.h" |
| //#include "./libs/mcp4922.h" |
| //#include "./libs/adc.h" |
| //#include "./libs/timer.h" |
| |
| |
| #define LEN 128 |
| |
| void act(void); |
| void drive(unsigned char t); |
| |
| int main (void) { |
| USART_Init(MYUBRR); |
| PORTC = 0b00000000; // drive port |
| DDRC = 0b00000011; // drive port out |
| |
| DDRB = 0b00101110; //MOSI out CONV out, DAC CS out |
| PORTB = 0b00101010; // SCK, MOSI, CONV, DAC high |
| SPI_MasterInit(); |
| |
| sei(); |
| |
| while (1) ; |
| return 0; |
| } |
| |
| |
| void act(void) { |
| |
| unsigned char data[2*LEN]; |
| unsigned char i,j; |
| |
| for(j=0;j<40;j++) { |
| for(i=0;i<LEN;i++) { |
| drive(i); |
| _delay_us(5); |
| } |
| } |
| |
| for(i=0;i<LEN;i++) { |
| drive(i); |
| |
| PORTB |= 0b00000100; |
| _delay_us(4); // converting |
| PORTB &= 0b11111011; |
| |
| data[2*i]=SPI_MasterTransmit(0x0); |
| data[2*i+1]=SPI_MasterTransmit(0x0); |
| } |
| |
| PORTC=0; |
| |
| for(i=0;i<LEN;i++) { |
| USART_Transmit(data[2*i]); |
| // USART_Transmit(data[2*i+1]); |
| } |
| |
| } |
| |
| |
| void value(void) { |
| |
| unsigned char i,j; |
| long resultH,resultL; |
| |
| resultH=0; |
| resultL=0; |
| |
| for(j=0;j<32;j++) { |
| for(i=0;i<LEN;i++) { |
| drive(i); |
| _delay_us(5); |
| } |
| } |
| |
| for(j=0;j<4;j++) { |
| for(i=0;i<LEN/2;i++) { |
| drive(i); |
| |
| PORTB |= 0b00000100; |
| _delay_us(4); // converting |
| PORTB &= 0b11111011; |
| |
| resultH+=(unsigned char)SPI_MasterTransmit(0x0); |
| resultL+=(unsigned char)SPI_MasterTransmit(0x0); |
| } |
| for(i=LEN/2;i<(LEN/4)*3;i++) { //dela podivnou kvantitatizaci vysledku |
| drive(i); |
| |
| PORTB |= 0b00000100; |
| _delay_us(4); // converting |
| PORTB &= 0b11111011; |
| |
| resultH-=(unsigned char)SPI_MasterTransmit(0x0); |
| resultL-=(unsigned char)SPI_MasterTransmit(0x0); |
| } |
| } |
| |
| PORTC=0; // drive off |
| |
| // resultH *= 256; |
| // USART_Transmit_longnum(resultH+resultL); |
| |
| USART_Transmit_longnum(resultH); |
| |
| USART_Transmit('\n'); |
| } |
| |
| |
| ISR(USART_RXC_vect) { |
| cli(); |
| char c; |
| |
| c=UDR; //must be read to untrigger interupt |
| |
| if (c=='a') |
| act(); |
| else if (c=='v') |
| value(); |
| |
| sei(); |
| } |
| |
| |
| void drive(unsigned char t) { |
| if (t<LEN/2) |
| PORTC = 0b00000001; |
| else |
| PORTC = 0b00000010; |
| } |
| |
| |