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gpio: Merge gpio_adc_sample_time() into gpio_adc_sample()

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Return the number of clock ticks to wait directly from
gpio_adc_sample().  This simplifies the ADC interface.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
2016-11-02 17:30:34 -04:00
parent 5419c456ac
commit 7c8addc5c5
5 changed files with 29 additions and 34 deletions
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6
src/avr/gpio.h
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@@ -2,7 +2,6 @@
#define __AVR_GPIO_H
#include <stdint.h>
#include "compiler.h" // __always_inline
struct gpio_out {
struct gpio_digital_regs *regs;
@@ -31,10 +30,9 @@ struct gpio_adc {
uint8_t chan;
};
struct gpio_adc gpio_adc_setup(uint8_t pin);
uint32_t gpio_adc_sample_time(void);
uint8_t gpio_adc_sample(struct gpio_adc g);
void gpio_adc_clear_sample(struct gpio_adc g);
uint32_t gpio_adc_sample(struct gpio_adc g);
uint16_t gpio_adc_read(struct gpio_adc g);
void gpio_adc_cancel_sample(struct gpio_adc g);
void spi_config(void);
void spi_transfer(char *data, uint8_t len);