59 lines
2.2 KiB
C
59 lines
2.2 KiB
C
#pragma once
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#define AD_DEFAULT_FREQ 1000U ///< Default initialisation frequency (Hz)
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#define AD_DEFAULT_PHASE 0 ///< Default initialisation phase angle (degrees)
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#define AD_MCLK 25000000U ///< Clock speed of the AD9833 reference clock in Hz
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#define AD_MCLK_DIV2 12500000U ///< Clock speed of the AD9833 reference clock in Hz
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/**
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* Channel enumerated type.
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*
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* This enumerated type is used with the to specify which channel
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* is being invoked on operations that could be channel related.
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*/
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typedef enum
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{
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CHAN_0 = 0, ///< Channel 0 definition
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CHAN_1 = 1, ///< Channel 1 definition
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} AD_channel_t;
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/**
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* Output mode request enumerated type.
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*
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* This enumerated type is used with the \ref setMode() methods to identify
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* the mode request.
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*/
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typedef enum
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{
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MODE_OFF, ///< Set output all off
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MODE_SINE, ///< Set output to a sine wave at selected frequency
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MODE_SQUARE1, ///< Set output to a square wave at selected frequency
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MODE_SQUARE2, ///< Set output to a square wave at half selected frequency
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MODE_TRIANGLE, ///< Set output to a triangle wave at selected frequency
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} AD_mode_t;
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typedef struct
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{
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uint16_t _regCtl; // control register image
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uint32_t _regFreq[2]; // frequency registers
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uint32_t _regPhase[2]; // phase registers
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AD_mode_t _mode; // last set mode
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float _freq[2]; // last frequencies set
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uint16_t _phase[2]; // last phase setting
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SPI_HandleTypeDef *hspi;
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GPIO_TypeDef *cs_port;
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uint16_t cs_pin;
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} ad9833_handle_t;
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void ad9833_init(ad9833_handle_t *hfg, SPI_HandleTypeDef *hspi, GPIO_TypeDef *cs_port, uint16_t cs_pin);
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void ad9833_spi_activate(ad9833_handle_t *hfg);
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void ad9833_spi_deactivate(ad9833_handle_t *hfg);
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void ad9833_reset(ad9833_handle_t *hfg, uint8_t hold);
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void ad9833_setActiveChannelFreq(ad9833_handle_t *hfg, AD_channel_t chan);
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AD_channel_t ad9833_getActiveChannelFreq(ad9833_handle_t *hfg);
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void ad9833_setActiveChannelPhase(ad9833_handle_t *hfg, AD_channel_t chan);
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AD_channel_t ad9833_getActiveChannelPhase(ad9833_handle_t *hfg);
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void ad9833_setMode(ad9833_handle_t *hfg, AD_mode_t mode);
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void ad9833_setFrequency(ad9833_handle_t *hfg, AD_channel_t chan, uint32_t freq);
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void ad9833_setPhase(ad9833_handle_t *hfg, AD_channel_t chan, uint16_t phase); |