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====== nanoDAC+ No-OS Driver ======

===== Supported Devices =====
  * [[adi>AD5671R]]
  * [[adi>AD5672R]]
  * [[adi>AD5673R]]
  * [[adi>AD5674R]]
  * [[adi>AD5675]]
  * [[adi>AD5675R]]
  * [[adi>AD5676]]
  * [[adi>AD5676R]]
  * [[adi>AD5677R]]
  * [[adi>AD5679R]]
  * [[adi>AD5684]]
  * [[adi>AD5684R]]
  * [[adi>AD5685R]]
  * [[adi>AD5686]]
  * [[adi>AD5686R]]
  * [[adi>AD5694]]
  * [[adi>AD5694R]]
  * [[adi>AD5695R]]
  * [[adi>AD5696]]
  * [[adi>AD5681R]]
  * [[adi>AD5682R]]
  * [[adi>AD5683R]]
  * [[adi>AD5683]]
  * [[adi>AD5691R]]
  * [[adi>AD5692R]]
  * [[adi>AD5693R]]
  * [[adi>AD5693]]

===== Overview =====
The [[adi>AD5673R]], [[adi>AD5674R]], [[adi>AD5676]], [[adi>AD5676R]], [[adi>AD5675]], [[adi>AD5675R]], [[adi>AD5677R]], [[adi>AD5679R]],[[adi>AD5686]], [[adi>AD5686R]], [[adi>AD5696]], [[adi>AD5696R]] / [[adi>AD5685R]], [[adi>AD5695R]] / [[adi>AD5672R]], [[adi>AD5671R]], [[adi>AD5684]], [[adi>AD5684R]], [[adi>AD5694]], [[adi>AD5694R]], [[adi>AD5681R]], [[adi>AD5682R]], [[adi>AD5683R]], [[adi>AD5683]], [[adi>AD5691R]], [[adi>AD5692R]], [[adi>AD5693R]], [[adi>AD5693]]  are low power, single-channel/octal/quad, 16-/14-/12-bit,  buffered voltage output digital-to-analog converter (DAC). All devices operate from a single 2.7 V to 5.5 V supply and are guaranteed monotonic by design. 

The [[adi>AD5673R]], [[adi>AD5674R]], [[adi>AD5676]], [[adi>AD5676R]], [[adi>AD5675]], [[adi>AD5675R]], [[adi>AD5677R]], [[adi>AD5679R]],[[adi>AD5686]], [[adi>AD5686R]], [[adi>AD5696]], [[adi>AD5696R]] / [[adi>AD5685R]], [[adi>AD5695R]] / [[adi>AD5672R]], [[adi>AD5671R]], [[adi>AD5684]], [[adi>AD5684R]], [[adi>AD5694]], [[adi>AD5694R]] include a gain select pin giving a full-scale output of 2.5 V (gain = 1) or 5 V (gain = 2).

The [[adi>AD5673R]], [[adi>AD5674R]], [[adi>AD5676]], [[adi>AD5676R]], [[adi>AD5675]], [[adi>AD5675R]], [[adi>AD5672R]], [[adi>AD5671R]],[[adi>AD5677R]], [[adi>AD5679R]], [[adi>AD5686]], [[adi>AD5686R]],  [[adi>AD5685R]], [[adi>AD5684]], [[adi>AD5684R]], [[adi>AD5695R]], [[adi>AD5694]], [[adi>AD5694R]], [[adi>AD5696]], [[adi>AD5696R]],[[adi>AD5681R]], [[adi>AD5682R]], [[adi>AD5683R]], [[adi>AD5683]], [[adi>AD5691R]], [[adi>AD5692R]], [[adi>AD5693R]], [[adi>AD5693]] also incorporates a power-on reset circuit and a RSTSEL pin that ensures that the DAC outputs power up to zero scale or midscale and remain there until a valid write takes place. Each device contains a per channel power-down feature that reduces the current consumption of the device to 2 µA/2.5 µA / 4 µA while in power-down mode.

The [[adi>AD5674R]], [[adi>AD5676]], [[adi>AD5676R]], [[adi>AD5672R]], [[adi>AD5679R]], [[adi>AD5686]], [[adi>AD5686R]],  [[adi>AD5685R]], [[adi>AD5684]], [[adi>AD5684R]], [[adi>AD5681R]], [[adi>AD5682R]], [[adi>AD5683R]], [[adi>AD5683]] employs a versatile serial peripheral interface (SPI) that operates at clock rates up to 50 MHz.

The [[adi>AD5673R]], [[adi>AD5675]], [[adi>AD5675R]], [[adi>AD5677R]], [[adi>AD5695R]], [[adi>AD5671R]], [[adi>AD5694]], [[adi>AD5694R]], [[adi>AD5696]], [[adi>AD5696R]], [[adi>AD5691R]], [[adi>AD5692R]], [[adi>AD5693R]], [[adi>AD5693]] use a versatile 2-wire serial interface that
operates at clock rates up to 400 kHz.

All devices contain a VLOGIC pin intended for 1.8 V/3 V/5 V logic.

Applications:
  * Optical transceivers
  * Base-station power amplifiers
  * Process control (programmable logic control [PLC] input/output cards)
  * Industrial automation
  * Data acquisition systems

===== Driver Description =====

==== Functions Declarations ====

^ Function       ^ Description     ^
|<code c>int32_t ad5686_init(struct ad5686_dev **device, struct ad5686_init_param init_param);</code>| Initialize the device. |
|<code c>int32_t ad5686_remove(struct ad5686_dev *dev);</code>| Free the resources allocated by ad5686_init(). |
|<code c>uint16_t ad5686_set_shift_reg(struct ad5686_dev *dev, uint8_t command, uint8_t address, uint16_t data);</code>| Write to input register. |
|<code c>void ad5686_write_register(struct ad5686_dev *dev, enum ad5686_dac_channels channel, uint16_t data);</code>| Write to Input Register n (dependent on LDAC). |
|<code c>void ad5686_update_register(struct ad5686_dev *dev, enum ad5686_dac_channels channel);</code>| Update DAC Register n with contents of Input Register n |
|<code c>void ad5686_write_update_register(struct ad5686_dev *dev, enum ad5686_dac_channels channel, uint16_t data);</code>| Write to and update DAC channel n . |
|<code c>uint16_t ad5686_read_back_register(struct ad5686_dev *dev, enum ad5686_dac_channels channel);</code>| Read back Input Register n. |
|<code c>void ad5686_power_mode(struct ad5686_dev *dev, enum ad5686_dac_channels channel, uint8_t mode);</code>| Power down the selected channels. |
|<code c>void ad5686_ldac_mask(struct ad5686_dev *dev, enum ad5686_dac_channels channel, uint8_t enable);</code>| Set up LDAC mask register. |
|<code c>void ad5686_software_reset(struct ad5686_dev *dev);</code>| Software reset (power-on reset) |
|<code c>void ad5686_internal_reference(struct ad5686_dev *dev, uint8_t value);</code>| Write to Internal reference setup register |
|<code c>void ad5686_daisy_chain_en(struct ad5686_dev *dev, uint8_t value);</code>| Set up DCEN register (daisy-chain enable) |
|<code c>void ad5686_read_back_en(struct ad5686_dev *dev, uint8_t value);</code>| Set up readback register (readback enable) |
|<code c>int32_t ad5686_gain_mode(struct ad5686_dev *dev, uint8_t value);</code>| Set gain mode (AD5683 family specific) |

==== Types Declarations ====

|<code c>
enum ad5686_type {
	ID_AD5671R,
	ID_AD5672R,
       ID_AD5673R,
	ID_AD5674R,
	ID_AD5675R,
	ID_AD5676,
	ID_AD5676R,
       ID_AD5677R,
	ID_AD5679R,
	ID_AD5686,
	ID_AD5684R,
	ID_AD5685R,
	ID_AD5686R,
	ID_AD5694,
	ID_AD5694R,
	ID_AD5695R,
	ID_AD5696,
	ID_AD5696R,
	ID_AD5681R,
	ID_AD5682R,
	ID_AD5683R,
	ID_AD5683,
	ID_AD5691R,
	ID_AD5692R,
	ID_AD5693R,
	ID_AD5693
};

enum comm_type {
	SPI,
	I2C,
};

enum ad5686_dac_channels {
	AD5686_CH_0 = 0,
	AD5686_CH_1,
	AD5686_CH_2,
	AD5686_CH_3,
	AD5686_CH_4,
	AD5686_CH_5,
	AD5686_CH_6,
	AD5686_CH_7,
	AD5686_CH_8,
	AD5686_CH_9,
	AD5686_CH_10,
	AD5686_CH_11,
	AD5686_CH_12,
	AD5686_CH_13,
	AD5686_CH_14,
	AD5686_CH_15,
};

struct ad5686_chip_info {
	uint8_t		resolution;
	uint8_t		register_map;
	enum comm_type	communication;
	const uint32_t *channel_addr;
};

struct ad5686_dev {
	/* I2C */
	i2c_desc	*i2c_desc;
	/* SPI */
	spi_desc	*spi_desc;
	/* GPIO */
	gpio_desc	*gpio_reset;
	gpio_desc	*gpio_ldac;
	/* Device Settings */
	enum ad5686_type	act_device;
	uint32_t power_down_mask;
	uint32_t ldac_mask;
};

struct ad5686_init_param {
	/* I2C */
	i2c_init_param	i2c_init;
	/* SPI */
	spi_init_param	spi_init;
	/* GPIO */
	int8_t		gpio_reset;
	int8_t		gpio_ldac;
	/* Device Settings */
	enum ad5686_type	act_device;
};
</code>|

===== Downloads =====
<WRAP round download 50%>
  * {{https://github.com/analogdevicesinc/no-OS/blob/master/drivers/dac/ad5686/ad5686.c|Implementation of AD5686 Driver.}}
  * {{https://github.com/analogdevicesinc/no-OS/blob/master/drivers/dac/ad5686/ad5686.h|Header file of AD5686 Driver.}}
</WRAP>
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