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This commit is contained in:
skarg
2011-08-17 02:27:11 +00:00
parent 7e503510c7
commit 3e1cb1847f
125 changed files with 3548 additions and 3353 deletions
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bacnet-stack/ports/bdk-atxx4-mstp/adc-block.c
+12 -11
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@@ -72,18 +72,18 @@ void adc_enable(
* Notes: none
**************************************************/
uint8_t adc_result_8bit(
uint8_t channel) /* 0..7 = ADC0..ADC7, respectively */
{
uint8_t value = 0; /* return value */
uint8_t channel)
{ /* 0..7 = ADC0..ADC7, respectively */
uint8_t value = 0; /* return value */
while ( ADCSRA & (1 << ADSC) ) ;
while (ADCSRA & (1 << ADSC));
ADMUX = channel | (1 << ADLAR) | (0 << REFS1) | (1 << REFS0);
/* Delay needed for the stabilization of the ADC input voltage */
_delay_us(10);
/* Start the analog to digital conversion */
ADCSRA = (1 << ADEN) | (1 << ADSC) | (1 << ADIF) | ADPS_8BIT;
/* Wait for the analog to digital conversion to complete */
while ( (ADCSRA & (1 << ADIF)) == 0 ) ;
while ((ADCSRA & (1 << ADIF)) == 0);
value = ADCH;
return value;
@@ -95,18 +95,18 @@ uint8_t adc_result_8bit(
* Notes: none
**************************************************/
uint16_t adc_result_10bit(
uint8_t channel) /* 0..7 = ADC0..ADC7, respectively */
{
uint8_t channel)
{ /* 0..7 = ADC0..ADC7, respectively */
uint16_t value = 0; /* return value */
while ( ADCSRA & (1 << ADSC) ) ;
while (ADCSRA & (1 << ADSC));
ADMUX = channel | (0 << ADLAR) | (0 << REFS1) | (1 << REFS0);
/* Delay needed for the stabilization of the ADC input voltage */
_delay_us(10);
/* Start the analog to digital conversion */
ADCSRA = (1 << ADEN) | (1 << ADSC) | (1 << ADIF) | ADPS_10BIT;
/* Wait for the analog to digital conversion to complete */
while ( (ADCSRA & (1 << ADIF)) == 0 ) ;
while ((ADCSRA & (1 << ADIF)) == 0);
value = ADCL;
value |= (ADCH << 8);
@@ -118,11 +118,12 @@ uint16_t adc_result_10bit(
* Returns: none
* Notes: none
**************************************************/
void adc_init(void)
void adc_init(
void)
{
/* configure ADC for Free Running Mode - ADTS = 000 */
/* AIN1 is applied to the negative input of the Analog Comparator - ACME */
BITMASK_CLEAR(ADCSRB, _BV(ACME)|_BV(ADTS2)|_BV(ADTS1)|_BV(ADTS0));
BITMASK_CLEAR(ADCSRB, _BV(ACME) | _BV(ADTS2) | _BV(ADTS1) | _BV(ADTS0));
/* Digital input not needed on ADC0, so disable it to save power */
BIT_SET(DIDR0, ADC0D);
/* Clear the Power Reduction bit to enable ADC */