driver: ad9833

firmware/shared_libs/drivers/ad9833/ad9833.h

@@ -0,0 +1,56 @@
+#pragma once
+
+#define AD_DEFAULT_FREQ 1000U ///< Default initialisation frequency (Hz)
+#define AD_DEFAULT_PHASE 0    ///< Default initialisation phase angle (degrees)
+#define AD_MCLK 25000000UL    ///< Clock speed of the AD9833 reference clock in Hz
+/**
+ * Channel enumerated type.
+ *
+ * This enumerated type is used with the to specify which channel
+ * is being invoked on operations that could be channel related.
+ */
+typedef enum
+{
+    CHAN_0 = 0, ///< Channel 0 definition
+    CHAN_1 = 1, ///< Channel 1 definition
+} AD_channel_t;
+
+/**
+ * Output mode request enumerated type.
+ *
+ * This enumerated type is used with the \ref setMode() methods to identify
+ * the mode request.
+ */
+typedef enum
+{
+    MODE_OFF,      ///< Set output all off
+    MODE_SINE,     ///< Set output to a sine wave at selected frequency
+    MODE_SQUARE1,  ///< Set output to a square wave at selected frequency
+    MODE_SQUARE2,  ///< Set output to a square wave at half selected frequency
+    MODE_TRIANGLE, ///< Set output to a triangle wave at selected frequency
+} AD_mode_t;
+
+typedef struct
+{
+    uint16_t _regCtl;      // control register image
+    uint32_t _regFreq[2];  // frequency registers
+    uint32_t _regPhase[2]; // phase registers
+
+    AD_mode_t _mode;    // last set mode
+    float _freq[2];     // last frequencies set
+    uint16_t _phase[2]; // last phase setting
+
+    SPI_HandleTypeDef *hspi;
+    GPIO_TypeDef *cs_port;
+    uint16_t cs_pin;
+} ad9833_handle_t;
+
+void ad9833_init(ad9833_handle_t *hfg, SPI_HandleTypeDef *hspi, GPIO_TypeDef *cs_port, uint16_t cs_pin);
+void ad9833_reset(ad9833_handle_t *hfg, uint8_t hold);
+void ad9833_setActiveChannelFreq(ad9833_handle_t *hfg, AD_channel_t chan);
+AD_channel_t ad9833_getActiveChannelFreq(ad9833_handle_t *hfg);
+void ad9833_setActiveChannelPhase(ad9833_handle_t *hfg, AD_channel_t chan);
+AD_channel_t ad9833_getActiveChannelPhase(ad9833_handle_t *hfg);
+void ad9833_setMode(ad9833_handle_t *hfg, AD_mode_t mode);
+void ad9833_setFrequency(ad9833_handle_t *hfg, AD_channel_t chan, float freq);
+void ad9833_setPhase(ad9833_handle_t *hfg, AD_channel_t chan, uint16_t phase);