dac_demo.h

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/***************************************************************************/
#ifndef IIO_DEMO_DAC_
#define IIO_DEMO_DAC_
 
/******************************************************************************/
/***************************** Include Files **********************************/
/******************************************************************************/
 
#include <stdint.h>
#include "iio_types.h"
 
/******************************************************************************/
/*************************** Types Declarations *******************************/
/******************************************************************************/
 
#define MAX_DAC_ADDR        16
/* For testing a maximum of 16 channels can be enabled */
#ifndef TOTAL_DAC_CHANNELS
#define TOTAL_DAC_CHANNELS 2
#endif
 
struct dac_demo_desc {
    uint8_t reg[MAX_DAC_ADDR];
    uint32_t dac_global_attr;
    uint32_t dac_ch_attr[MAX_DAC_ADDR];
    uint32_t active_ch;
    uint32_t loopback_buffer_len;
    uint16_t **loopback_buffers;
};
 
struct dac_demo_init_param {
    uint32_t dev_global_attr;
    uint32_t dev_ch_attr[MAX_DAC_ADDR];
    uint32_t loopback_buffer_len;
    uint16_t **loopback_buffers;
};
 
enum iio_dac_demo_attributes {
    DAC_CHANNEL_ATTR,
    DAC_GLOBAL_ATTR,
};
 
/******************************************************************************/
/************************ Functions Declarations ******************************/
/******************************************************************************/
 
int32_t dac_demo_init(struct dac_demo_desc **desc,
              struct dac_demo_init_param *param);
 
int32_t dac_demo_remove(struct dac_demo_desc *desc);
 
int32_t update_dac_channels(void *dev, int32_t mask);
 
int32_t close_dac_channels(void* dev);
 
int32_t dac_submit_samples(struct iio_device_data *dev_data);
 
int get_dac_demo_attr(void *device, char *buf, uint32_t len,
              const struct iio_ch_info *channel, intptr_t priv);
 
int set_dac_demo_attr(void *device, char *buf, uint32_t len,
              const struct iio_ch_info *channel, intptr_t priv);
 
int32_t dac_demo_reg_read(struct dac_demo_desc *desc, uint8_t reg_index,
              uint8_t *readval);
 
int32_t dac_demo_reg_write(struct dac_demo_desc *desc, uint8_t reg_index,
               uint8_t writeval);
 
int32_t dac_demo_trigger_handler(struct iio_device_data *dev_data);
 
#endif /*IIO_DEMO_DAC_*/