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gpio: Fix off-by-one in declaration of ADC_MAX

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The maximum value for the ADC is 1023 for 10bit samples and 4095 for
12bit samples.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2017-05-07 17:36:02 -04:00
parent 37572bc217
commit a361b92184
2 changed files with 2 additions and 2 deletions
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2
src/avr/gpio.c
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@ -258,7 +258,7 @@ static const uint8_t adc_pins[] PROGMEM = {
static const uint8_t ADMUX_DEFAULT = 0x40; static const uint8_t ADMUX_DEFAULT = 0x40;
DECL_CONSTANT(ADC_MAX, 1024); DECL_CONSTANT(ADC_MAX, 1023);
struct gpio_adc struct gpio_adc
gpio_adc_setup(uint8_t pin) gpio_adc_setup(uint8_t pin)

2
src/sam3x8e/gpio.c
View file

@ -128,7 +128,7 @@ static const uint8_t adc_pins[] = {
}; };
#define ADC_FREQ_MAX 20000000 #define ADC_FREQ_MAX 20000000
DECL_CONSTANT(ADC_MAX, 4096); DECL_CONSTANT(ADC_MAX, 4095);
struct gpio_adc struct gpio_adc
gpio_adc_setup(uint8_t pin) gpio_adc_setup(uint8_t pin)