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AD9910 controlled by MBED LPC1768 via SPI



		

			

									
					    VinMA
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jan 29, 2018 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    I am a student with no experience in programming, and my project consists in controlling this DDS (AD9910) with the MBED model specified above. I am trying to send anything from de microcontroler to the DDS but I haven't have success. The code I have tested is attached in this discussion and I had tried lots of modifications on the numbers - including the frequency and format of SPI - but I have had no response on the DDS. Despite of that, I have successful communicated the MBED with a digital potentiometer with a similar code ( I will attach both codes). Can anyone help? I'm kind of lost. Thanks.
    
								
    

				
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                on Mar 10, 2018 1:18 AM
            
            
					
        
	
        

		
		
        
					
        I have successful established the communication between the AD9910 and the mbed's microcontroller (I can enable or disable the SYNC_CLK output through the Mbed), but I still didn't have an output in the J3 (UNFILTERED IOUT) or the J4 (FILTERED IOUT) pins. Which registers do I have to modify to observe the output?
        
 
        PS.: I have tried to obtain the output in the Single Tone and the RAM modes selecting the profiles through the Profile pins( P[0 ..2]) at the U6 header.
        
 
        Thanks,
        
 
        Vinicius
        
			
        

		
		
		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
				
				
						
				
				
		
		
        
			
		
        
	
        

        

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                on Mar 10, 2018 1:18 AM
            
            
					
          
	
          

		
		
          
					
          I have successful established the communication between the AD9910 and the mbed's microcontroller (I can enable or disable the SYNC_CLK output through the Mbed), but I still didn't have an output in the J3 (UNFILTERED IOUT) or the J4 (FILTERED IOUT) pins. Which registers do I have to modify to observe the output?
          
 
          PS.: I have tried to obtain the output in the Single Tone and the RAM modes selecting the profiles through the Profile pins( P[0 ..2]) at the U6 header.
          
 
          Thanks,
          
 
          Vinicius
          
			
          

		
		
		
		
	
          
	
          
		
          
			
		
          
	
          
	
          
		
						
				
				
						
				
				
		
		
          
			
		
          
	
          

          

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