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resources:eval:user-guides:ad7091r5 [10 Dec 2020 11:40] – created Cristian Popresources:eval:user-guides:ad7091r5 [10 Dec 2020 12:05] (current) – [Types Declarations] Cristian Pop
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 ====== AD7091R5 User Guide ====== ====== AD7091R5 User Guide ======
 +===== Overview =====
 +The [[adi>AD7091R-5]] is a 12-bit, multichannel, ultra low power,
 +successive approximation analog-to-digital converter (ADC).
 +The [[adi>AD7091R-5]] operates from a single 2.7 V to 5.25 V power supply
 +and typically consumes only 24 µA at a 3 V supply in fast mode.
 +The [[adi>AD7091R-5]] provides a 2-wire serial interface compatible
 +with I2C interfaces. The conversion process can be controlled by
 +a sample mode via the CONVST/GPO1 pin, an autocycle mode
 +selected through software control, or a command mode in
 +which conversions occur across I2C write operations.
 +The device contains a wide bandwidth track-and-hold amplifier
 +that can handle input frequencies up to 1.5 MHz. The [[adi>AD7091R-5]]
 +also features an on-chip conversion clock, an on-chip accurate
 +2.5 V reference, and a programmable out of bounds user alert
 +function.
 +The [[adi>AD7091R-5]] offers four single-ended analog input channels
 +with a channel sequencer that allows a preprogrammed
 +selection of channels to be converted sequentially.
 +The [[adi>AD7091R-5]] uses advanced design techniques to achieve
 +ultra low power dissipation without compromising performance. It
 +also features flexible power management options. An on-chip
 +configuration register allows the user to set up different operating
 +conditions. These include power management, alert functionality,
 +busy indication, channel sequencing, and general-purpose output
 +pins. The MUXOUT and ADCIN pins allow signal conditioning of the
 +multiplexer output before acquisition by the ADC.
  
 +==== Supported devices ====
 +  * [[adi>AD7091R-5]]
 +
 +==== Evaluation board ====
 +  * [[adi>EVAL-AD7091R-5]]
 +
 +===== No-OS Driver Description =====
 +
 +==== Functions Declarations ====
 +^ Function       ^ Description     ^
 +|<code c>int32_t ad7091r5_init(struct ad7091r5_dev **device,
 +       struct ad7091r5_init_param *init_param);</code>| Initialize the device.|
 +|<code c>int32_t ad7091r5_remove(struct ad7091r5_dev *dev);</code>| Remove the device and release resources.|
 +|<code c>int32_t ad7091r5_set_mode(struct ad7091r5_dev *dev,
 +   enum ad7091r5_mode mode);</code>| Set device mode.|
 +|<code c>int32_t ad7091r5_sleep_mode(struct ad7091r5_dev *dev,
 +     enum ad7091r5_sleep_mode mode);</code>| Set device sleep mode.|
 +|<code c>int32_t ad7091r5_set_port(struct ad7091r5_dev *dev,
 +   enum ad7091r5_port port, bool value);</code>| Set device set port value.|
 +|<code c>int32_t ad7091r5_set_gpo0_mode(struct ad7091r5_dev *dev,
 +        enum ad7091r5_gpo0_mode mode,
 +        bool is_cmos);</code>| Set device set GPO0 mode.|
 +|<code c>int32_t ad7091r5_set_cycle_timer(struct ad7091r5_dev *dev,
 + enum ad7091r5_cycle_timer timer);</code>| Set cycle timer for autocycle mode.|
 +|<code c>int32_t ad7091r5_set_limit(struct ad7091r5_dev *dev,
 +    enum ad7091r5_limit limit,
 +    uint8_t channel,
 +    uint16_t value);</code>| Set high limit, low limit, hysteresis.|
 +|<code c>int32_t ad7091r5_get_alert(struct ad7091r5_dev *dev,
 +    uint8_t channel,
 +    enum ad7091r5_alert_type *alert);</code>| Get alert.|
 +|<code c>int32_t ad7091r5_get_limit(struct ad7091r5_dev *dev,
 +    enum ad7091r5_limit limit,
 +    uint8_t channel,
 +    uint16_t *value);</code>| Get high limit, low limit, hysteresis.|
 +|<code c>int32_t ad7091r5_set_channel(struct ad7091r5_dev *dev,
 +      uint8_t channel);</code>| Select device channel.|
 +|<code c>int32_t ad7091r5_read_one(struct ad7091r5_dev *dev,
 +   uint8_t channel,
 +   uint16_t *read_val);</code>| Read one sample.|
 +==== Types Declarations ====
 +
 +|<code c>
 +/**
 + * @enum ad7091r5_mode
 + * @brief Converter supported modes
 + */
 +enum ad7091r5_mode {
 + /** Sample mode, conversion started by CONVST */
 + AD7091R5_MODE_SAMPLE,
 + /** Command mode, conversion starts on the first pos edge of SCL */
 + AD7091R5_MODE_COMMAND,
 + /** Sample mode, convert continuously */
 + AD7091R5_MODE_AUTOCYCLE,
 +};
 +
 +/**
 + * @enum ad7091r5_sleep_mode
 + * @brief Converter supported sleep modes
 + */
 +enum ad7091r5_sleep_mode {
 + /** Default operation:
 + * Sleep mode Off, Internal reference Off */
 + AD7091R5_SLEEP_MODE_0,
 + /** Sleep mode Off, Internal reference On */
 + AD7091R5_SLEEP_MODE_1,
 + /** Sleep mode On, Internal reference Off */
 + AD7091R5_SLEEP_MODE_2,
 + /** Sleep mode On, Internal reference On */
 + AD7091R5_SLEEP_MODE_3,
 +};
 +
 +/**
 + * @enum ad7091r5_port
 + * @brief Converter general purpose outputs
 + */
 +enum ad7091r5_port {
 + /** GPO0 */
 + AD7091R5_GPO0,
 + /** GPO1 */
 + AD7091R5_GPO1,
 + /** GPO2 */
 + AD7091R5_GPO2,
 +};
 +
 +/**
 + * @enum ad7091r5_gpo0_mode
 + * @brief Port 0 configuration
 + */
 +enum ad7091r5_gpo0_mode {
 + /** GPO0 is output port */
 + AD7091R5_GPO0_ENABLED,
 + /** GPO0 is Alert indicator */
 + AD7091R5_GPO0_ALERT,
 + /** GPO0 is busy indicator, device is converting */
 + AD7091R5_GPO0_BUSY,
 +};
 +
 +/**
 + * @enum ad7091r5_cycle_timer
 + * @brief Timer used for autocycle mode
 + */
 +enum ad7091r5_cycle_timer {
 + /** 100 uS */
 + AD7091R5_CYCLE_TIMER_100uS,
 + /** 200 uS */
 + AD7091R5_CYCLE_TIMER_200uS,
 + /** 400 uS */
 + AD7091R5_CYCLE_TIMER_400uS,
 + /** 800 uS */
 + AD7091R5_CYCLE_TIMER_800uS,
 +};
 +
 +/**
 + * @enum ad7091r5_alert_type
 + * @brief Alert status
 + */
 +enum ad7091r5_alert_type {
 + /** No alert */
 + AD7091R5_NO_ALERT,
 + /** High alert */
 + AD7091R5_HIGH_ALERT,
 + /** Low alert */
 + AD7091R5_LOW_ALERT,
 +};
 +
 +/**
 + * @enum ad7091r5_limit
 + * @brief Limit type
 + */
 +enum ad7091r5_limit {
 + /** Low limit */
 + AD7091R5_LOW_LIMIT,
 + /** High limit */
 + AD7091R5_HIGH_LIMIT,
 + /** Hysteresis */
 + AD7091R5_HYSTERESIS,
 +};
 +
 +/**
 + * @struct ad7091r5_init_param
 + * @brief  Structure containing the init parameters needed by the ad7091r5 device
 + */
 +struct ad7091r5_init_param {
 + /* I2C */
 + i2c_init_param *i2c_init;
 + /** RESET GPIO initialization structure. */
 + struct gpio_init_param *gpio_resetn;
 +};
 +
 +/**
 + * @struct ad7091r5_dev
 + * @brief  Structure representing an ad7091r5 device
 + */
 +struct ad7091r5_dev {
 + /* I2C descriptor */
 + struct i2c_desc *i2c_desc;
 + /** RESET GPIO handler. */
 + struct gpio_desc *gpio_resetn;
 +};
 +</code>|
 +===== No-OS Downloads =====
 +<WRAP round download 50%>
 +  * {{https://github.com/analogdevicesinc/no-OS/tree/master/drivers/adc/ad7091r5}}
 +</WRAP>
resources/eval/user-guides/ad7091r5.txt · Last modified: 10 Dec 2020 12:05 by Cristian Pop

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