Rolando Pelayo
A sine wave generator using AD9833 and AD9850 using STM32F103RB
This is a sine wave generator using DDS IC' AD9833 and AD9850. The STM32F1 microcontroller produces the SPI commands for the two DDS.
Learn more about STM32F1 in my blog: https://www.teachmemicro.com
Diff: AD9850.h
- Revision:
- 0:6069c0f2a245
- Child:
- 1:9dcccb399f0b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/AD9850.h Tue Nov 21 11:24:25 2017 +0000
@@ -0,0 +1,54 @@
+/******************************************************************************************************************
+ * Arduino library for AD9850
+ * Created 23/08/2014
+ * Christophe Caiveau f4goj@free.fr
+ *
+ * Use this library freely
+ *
+ * Hardware connections :
+ * W_CLK -> any pin
+ * FQ_UD -> any pin
+ * DATA/D7 -> any pin
+ * RESET -> any pin
+ *
+ * Functions :
+ * dds.begin(W_CLK pin, FQ_UD pin, DATA pin, RESET pin); Initialize the output pins and master reset the AD9850
+ * dds.calibrate(frequency); Compensation of crystal oscillator frequency
+ * dds.setfreq(frequency,phase); frequency in Hz, phase coded on 5 bits
+ * dds.down(); power down mode reducing the dissipated power from 380mW to 30mW @5V
+ * dds.up(); wake-up the AD9850
+ *
+ * AD9850 datasheet at http://www.analog.com/static/imported-files/data_sheets/AD9850.pdf
+ *
+ *****************************************************************************************************************/
+
+
+#ifndef AD9850_H
+#define AD9850_H
+#include <stdint.h>
+
+class AD9850
+{
+ public:
+ AD9850();
+
+ void Begin();//int w_clk, int fq_ud, int data, int reset);
+ void SetDDSFrequency(double f, uint8_t p);
+ void down();
+ void up();
+ void CalibrateDDS(double TrimFreq);
+
+ private:
+ int W_CLK;
+ int FQ_UD;
+ int DATA;
+ int RESET;
+ uint32_t deltaphase;
+ uint8_t phase;
+ void update();
+ void begin_priv();
+ // void pulse(int pin);
+ double calibFreq;
+};
+
+#endif