PIC18 LaurTec Library  3.1.2
Open Source C Library for PIC18 Microcontrollers based on C18 - XC8 Compilers
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AD9833.h
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1 /*******************************************************************************
2 
3 Author : Dario Di Turi
4 Version : 1.1
5 Date : 08/12/2012
6 
7 Last Update: Mauro Laurenti
8 Last Update: 02/02/2013
9 
10 ********************************************************
11 SOFTWARE LICENSE AGREEMENT
12 ********************************************************
13 
14 The usage of the supplied software imply the acceptance of the following license.
15 
16 The software supplied herewith by Dario Di Turi (the Author) is intended for
17 use solely and exclusively on Microchip PIC Microcontroller (registered mark).
18 The software is owned by the Author, and is protected under applicable
19 copyright laws. All rights are reserved.
20 Any use in violation of the foregoing restrictions may subject the
21 user to criminal sanctions under applicable laws, as well as to civil liability
22 for the breach of the terms and conditions of this license.
23 Commercial use is forbidden without a written acknowledgment with the Author.
24 Personal or educational use is allowed if the application containing the
25 following software doesn't aim to commercial use or monetary earning of any kind.
26 
27 THIS SOFTWARE IS PROVIDED IN AN "AS IS" CONDITION. NO WARRANTIES,
28 WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED
29 TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
30 PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. THE AUTHOR SHALL NOT,
31 IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL OR
32 CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
33 
34 
35 ********************************************************
36 PURPOSES
37 ********************************************************
38 
39 This library contains all functions needed to control the DDS waveform generator
40 AD9833. Information on the AD9833 can be found on the website
41 Analog Devices www.analog.com
42 
43 More details and pictures can be downloaded from www.LaurTec.com
44 
45 *******************************************************************************/
46 
47 
48 #ifndef AD9833_H
49 #define AD9833_H
50 
51 #ifdef __XC8
52  #include <xc.h>
53 #endif
54 
55 #include <spi.h>
56 
57 //**************************************************
58 // PIN CONNECTIONS
59 // Use the default pin to SPI connection
60 // SDATA(SDO) to RC7
61 // SCLK(SCK) to RB1
62 // FSYNC(SS) to RA5
63 //
64 // Remember:
65 // 1) The pull up resistor
66 // 2) Set the TRISx register
67 //**************************************************
68 
69 #define FSYNC LATAbits.LATA5
70 
71 
72 //**************************************************
73 // COSTANTS
74 //**************************************************
75 
76 #define RESET_AD9833 0b0000000100000000
77 #define REG0 0
78 #define REG1 1
79 #define DOWN 0
80 #define UP 1
81 #define SIN 1
82 #define TRIANGLE 2
83 #define SQUARE 3
84 #define FREQUENCY0_OUT 4
85 #define FREQUENCY1_OUT 5
86 #define PHASE0_OUT 6
87 #define PHASE1_OUT 7
88 #define SLEEP_MODE 9
89 #define POWER_ON 10
90 
91 
92 //****************************************************************************************************
93 // PRIVATE FUNCTIONS (The user should not use it)
94 //****************************************************************************************************
95 
106 void write_data_AD9833(unsigned int data);
107 
108 
118 unsigned int compose_AD9833_control_word(unsigned char function_type);
119 
120 
121 //****************************************************************************************************
122 // PUBLIC FUNCTIONS
123 //****************************************************************************************************
124 
135 void initialize_AD9833(unsigned char fmclk);
136 
137 
149 void set_frequency_AD9833(unsigned long freq_value, unsigned char frequency_register);
150 
151 
168 void tuning_frequency_AD9833(unsigned char tuning_step, unsigned char direction,unsigned char frequency_register );
169 
170 
182 void set_phase_AD9833(unsigned short long phase_value, unsigned char phase_register);
183 
184 
202 void set_function_AD9833(unsigned char function_type);
203 
204 
205 
206 #endif
207 
208 
209 
210 
211