AVR A/D example.c: Rozdiel medzi revíziami
Z SensorWiki
Riadok 2: | Riadok 2: | ||
#include <avr/io.h> | #include <avr/io.h> | ||
− | + | void adc_init(void); // A/D converter initialization | |
− | void adc_init(void); | ||
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int main(void) | int main(void) | ||
{ | { | ||
+ | unsigned int buffer; | ||
− | + | adc_init(); // Init A/D converter | |
− | + | while (1) | |
− | + | { | |
+ | ADCSRA |= (1<<ADSC); // Start A/D conversion | ||
+ | while ( !(ADCSRA & (1<<ADIF)) /* Do nothing */ ; // Wait until AD not finished | ||
+ | buffer = (ADCH<<8) | ADCL; // Then, read result | ||
+ | } | ||
− | + | } | |
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− | + | void adc_init(void) // A/D converter initialization | |
− | void adc_init(void) | ||
{ | { | ||
− | + | ADMUX = 0; // Ref: external, Channel 0 (ADC0) | |
− | + | ADCSRA = (1<<ADEN)|(1<<ADPS2)|(1<<ADPS1); // A/D ON, prescaler = 64, | |
− | + | SFIOR = 0; // Specialfunctions OFF | |
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} | } | ||
</source> | </source> |
Verzia zo dňa a času 23:04, 30. november 2008
#include <avr/io.h>
void adc_init(void); // A/D converter initialization
int main(void)
{
unsigned int buffer;
adc_init(); // Init A/D converter
while (1)
{
ADCSRA |= (1<<ADSC); // Start A/D conversion
while ( !(ADCSRA & (1<<ADIF)) /* Do nothing */ ; // Wait until AD not finished
buffer = (ADCH<<8) | ADCL; // Then, read result
}
}
void adc_init(void) // A/D converter initialization
{
ADMUX = 0; // Ref: external, Channel 0 (ADC0)
ADCSRA = (1<<ADEN)|(1<<ADPS2)|(1<<ADPS1); // A/D ON, prescaler = 64,
SFIOR = 0; // Specialfunctions OFF
}