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| author | Kevin O'Connor <kevin@koconnor.net> | 2017-05-07 17:36:02 -0400 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2017-05-15 14:02:59 -0400 |
| commit | a361b921849b4e23f7a41feb2a7c011ee6d794b1 (patch) | |
| tree | f379c892f54f7a9935e961c441a2ce6182da6ca8 | |
| parent | 37572bc2174432df133a8d2fed2cded0a4fcbd54 (diff) | |
| download | kutter-a361b921849b4e23f7a41feb2a7c011ee6d794b1.tar.gz kutter-a361b921849b4e23f7a41feb2a7c011ee6d794b1.tar.xz kutter-a361b921849b4e23f7a41feb2a7c011ee6d794b1.zip | |
gpio: Fix off-by-one in declaration of ADC_MAX
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>
| -rw-r--r-- | src/avr/gpio.c | 2 | ||||
| -rw-r--r-- | src/sam3x8e/gpio.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/src/avr/gpio.c b/src/avr/gpio.c index 5dfc34c4..aa39f957 100644 --- a/src/avr/gpio.c +++ b/src/avr/gpio.c @@ -258,7 +258,7 @@ static const uint8_t adc_pins[] PROGMEM = { static const uint8_t ADMUX_DEFAULT = 0x40; -DECL_CONSTANT(ADC_MAX, 1024); +DECL_CONSTANT(ADC_MAX, 1023); struct gpio_adc gpio_adc_setup(uint8_t pin) diff --git a/src/sam3x8e/gpio.c b/src/sam3x8e/gpio.c index d20f3f77..205528d5 100644 --- a/src/sam3x8e/gpio.c +++ b/src/sam3x8e/gpio.c @@ -128,7 +128,7 @@ static const uint8_t adc_pins[] = { }; #define ADC_FREQ_MAX 20000000 -DECL_CONSTANT(ADC_MAX, 4096); +DECL_CONSTANT(ADC_MAX, 4095); struct gpio_adc gpio_adc_setup(uint8_t pin) |