diff options
| author | Bernhard Tittelbach <bernhard@tittelbach.org> | 2017-03-30 15:35:33 +0200 |
|---|---|---|
| committer | Bernhard Tittelbach <bernhard@tittelbach.org> | 2017-03-30 15:35:33 +0200 |
| commit | cd1caad111a4210703b76f6c0152da66005aa559 (patch) | |
| tree | 3060859113b24baf621ad5b58220f86de3409fc5 | |
| parent | whitespace cleanup (diff) | |
fix adc example
| -rw-r--r-- | usb-adc-dustsensor/usb-adc-dustsensor.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/usb-adc-dustsensor/usb-adc-dustsensor.c b/usb-adc-dustsensor/usb-adc-dustsensor.c index 1bf69a0..84549ea 100644 --- a/usb-adc-dustsensor/usb-adc-dustsensor.c +++ b/usb-adc-dustsensor/usb-adc-dustsensor.c @@ -49,8 +49,8 @@ #define LOWv OP_CLEARBIT #define DUSTS_LED(OP) PIN_SW(PORTF, PF0, OP) -#define DUSTS_ADC_NUM 1 -#define DUSTS_ADC_MUX_MASK ADC_CHANNEL1 +#define DUSTS_ADC_NUM 0 +#define DUSTS_ADC_MUX_MASK ADC_CHANNEL0 void dusts_init(void) @@ -58,20 +58,18 @@ void dusts_init(void) DDRF = (1 << PF0); DUSTS_LED(HIGHv); //ADC_Init(ADC_SINGLE_CONVERSION); - ADC_Init(ADC_FREE_RUNNING); + ADC_Init(ADC_FREE_RUNNING | ADC_PRESCALE_32); ADC_SetupChannel (DUSTS_ADC_NUM); } int16_t dusts_measure(void) { DUSTS_LED(LOWv); _delay_us(280); - //measure ADC - int16_t m = ADC_GetChannelReading(ADC_REFERENCE_AVCC | DUSTS_ADC_MUX_MASK); - + ADC_GetChannelReading(ADC_REFERENCE_INT2560MV | ADC_RIGHT_ADJUSTED | DUSTS_ADC_MUX_MASK); _delay_us(40); DUSTS_LED(HIGHv); - return m; + return ADC_GetResult(); } |