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linux: Add support for analog IIO devices

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Add support for reading analog values via the standard Linux IIO
interface.  This can be used on Replicape boards to sample analog
input pins.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
2017-08-27 13:58:19 -04:00
parent 4d60567bc6
commit 16d2ec3a90
6 changed files with 83 additions and 2 deletions
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14
src/linux/gpio.h Normal file
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@@ -0,0 +1,14 @@
#ifndef __LINUX_GPIO_H
#define __LINUX_GPIO_H
#include <stdint.h> // uint8_t
struct gpio_adc {
int fd;
};
struct gpio_adc gpio_adc_setup(uint8_t pin);
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);
#endif // gpio.h