View difference between Paste ID: uLqg5dwW and wnVJWGFH

 #include <stdio.h>
 #include <stdint.h>
 #include <ctype.h>
 #include <avr/io.h>		    // include I/O definitions (port names, pin names, etc)
 #include <avr/interrupt.h>	// include interrupt support
 #define USART_BAUDRATE 9600
 #define F_CPU 8000000
 #define MYUBRR F_CPU/16/USART_BAUDRATE-1
 static volatile unsigned char temp; //so it is global, because we can not return from interrupt
 
 int printCHAR(char character, FILE *stream)
 {
    while ((UCSR0A & (1 << UDRE)) == 0) {};
 
    UDR0 = character;
 
    return 0;
 }
 
 FILE uart_str = FDEV_SETUP_STREAM(printCHAR, NULL, _FDEV_SETUP_RW);
 uint16_t samples[64];
 uint8_t sample;
-void adc_init(void) // Function to initialise the ADC feature
+
 void setup(void)
-	ADCSRA=0X00; // Clear previous ADC results and status flags
+
-	ADMUX |= (1 << ADLAR) | (1 << REFS0);
+
-	ADCSRA |= (1 << ADSC) | (1 << ADEN) | (1 << ADPS1) | (1 << ADPS2)|(1<<ADIE); //interrpts now enabled
+	ADMUX=(1<<1); //single ended adc2/pb4
 	ADCSRA=(1<<7) | (1<<ADATE)|(1<<ADIE) | (1<<ADPS2)|(1<<ADPS1); //125khz /64
 	ADCSRB=0;
 	ADCSRA|=(1<<ADSC);
 	//RingBuffer_InitBuffer(&txBuffer, txBuffer_Data, sizeof(txBuffer_Data));
 }
 
 
 
 
 /*unsigned char adc_start(unsigned char channel) // Function to perform an ADC conversion, Takes 0-8 as input
 // to select which input to convert
 {
 	unsigned char i;
 	ADCH=0x00; // Clear the previous result
 
 	i=channel&0x07; // Decide which line to perform ADC conversion on
 	ADMUX=i|0x60; // Enter which line to perform in the ADC control register
 	ADCSRA|=1<<ADSC;
 
 	while(ADCSRA & (1<<ADSC));  // wait for conv. to complete
-ISR(ADC_vect){
+
-// NOT USING ADC CHANNEL SELECTOR FOR NOW
+
-//
+
-//
+
-//		unsigned char i;
+ISR(ADC_vect,ISR_NOBLOCK)
-//	ADCH=0x00; // Clear the previous result
+
-//	i=channel&0x07; // Decide which line to perform ADC conversion on
+	sample++;
-//	ADMUX=i|0x60; // Enter which line to perform in the ADC control register
+	if(sample>63) sample=0;
- // wait for conv. to complete
+	samples[sample]=ADCL;
-	temp = ADCH; //unsigned int temp=ADC;   for 10 bits
+	samples[sample]|=( ((uint16_t)ADCH)<<8 );
-	printf("read: %d \n\r", temp);
+
 
 int main (void)
 {
 
    UCSR0B |= (1 << RXEN) | (1 << TXEN);   // Turn on the transmission and reception circuitry
    UCSR0C |= (1 << UCSZ0) | (1 << UCSZ1); // Use 8-bit character sizes
    UBRR0H = (MYUBRR >> 8); // Load upper 8-bits of the baud rate value into the high byte of the UBRR register
    UBRR0L = MYUBRR; // Load lower 8-bits of the baud rate value into the low byte of the UBRR register
    stdout = &uart_str;
    printf("Hello World\n\r");
    uint8_t result=0;
    setup();
    sei();//global interrupts enable
-   adc_init();
+   uint16_t a;
 	uint8_t i,j;
    ADCSRA|=1<<ADSC;
-   while(1){
+  while(1)
-   }
+	{
 		//USI_UART_Transmit_Byte('a');
 		//ADCSRA|=(1<<ADSC);
 		//while(ADCSRA&(1<<ADSC));
 		a=0;
 		for(i=0;i<64;i++)
 			a+=samples[i];
 		a|=( ((uint16_t)ADCH)<<8 );
 		printf("S: %u\r\n",a);
 
 
 	}
 
 }