Products Mentioned

ADAU1701 Production
The ADAU1701 is a complete single-chip audio system with a 28-/56-bit audio DSP, ADCs, DACs, and microcontroller-like control interfaces. Signal processing...
Datasheet
ADAU1701 on Analog.com

Associated Drivers

Thread Details

  • State Suggested Answer
  • Replies 13 replies
  • Answers 2 answers
  • Subscribers 76 subscribers
  • Views 4905 views
  • Users 0 members are here
Options
 
Related Content

        

            Post
             Go back to editing
        

    

    


    

    









		


















	
	
			
	
			
		
	
	
		

	    
	    
	    		
ADAU1701 and SigmaTcp - Header mismatch

		
	
				

			

									
					    lucasolim
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Mar 2, 2017 
				
			
			
		

		
		                     
				
        		

		    
		    		    
		    			

			    
Hey All,

 
I was trying to configure an ADAU1701 connected to a raspberry pi (over an i2c bus, running Raspbian) using SigmaTcp. Unfortunately, I was unable to do that in the first attempt. I analyzed the TCPIP packages sent by SigmaStudio using wireshark and I noticed that the header was different from the one that SigmaTcp was waiting. Sigma tcp waits for a 8 bytes header, with length in the bytes 4 and 5, and addr in the bytes 6 and 7. SigmaStudio sends a 10 bytes header with length in the bytes 6 and 7, and addr in the bytes 8 and 9. After some changes in function handle_connection on sigma-tcp.c, I was able to control the chip over a TCP/IP connection. 

 
Is there a different version of sigma tcp to be used with ADAU1701? I searched in this forum and couldn't find anyone with the same problem, so I decided to post this. 

 
Thanks!

 
Lucas@

			

			
									
		                             
                        

    

                                            
                 Audio Signal Processors
                
                                                    
                 sigma_tcp
                
                                                    
                 SigmaDSP Audio Processors
                
                                                    
                 adau1701 sigmastudio
                
                                                    
                 adau1701
                
                                
            

    
    
		


				
				        
        		

			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		


        
        
        
    
					

			





















	

	

					



			








	
	
	
	



Parents
	
    
	

  • 
	
    



	
		
	
	



    
	
    
		
    
							
					
    
		
    
		    
		    		    
			
				
									
							        
			
			
			
            
						
                            
            
            				
            
                on Jul 15, 2018 8:51 AM
            
            
						
			            		
    
		
										0
					
	
    

		
		
    
		
    
                                
                                                            
    
					
    raspberry pi has no problem making repeated starts.
    
 
    uint8_t addr_buf[2];
     struct i2c_msg msg[2] = {0};
    
 

     struct i2c_rdwr_ioctl_data msgset;
    
 
    // 16 bit address
     addr_buf[0] = (addr >> 8) & 0xff;
     addr_buf[1] = addr & 0xff;
    
 
    msg[0].addr = i2c_dev_addr;
     msg[0].flags = 0;
     msg[0].buf = addr_buf;
     msg[0].len = 2;
     msg[1].addr = i2c_dev_addr;
     msg[1].flags = I2C_M_RD;
     msg[1].buf = data;
     msg[1].len = r_len;
    
 
    msgset.msgs = msg;
     msgset.nmsgs = 2;
    
 
    if(ioctl(i2c_fd, I2C_RDWR, &msgset ) < 0) {
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

    • 

	




Reply

    


  • 
	
    



	
		
	
	



    
	
    
		
    
							
					
    
		
    
		    
		    		    
			
				
									
							        
			
			
			
            
						
                            
            
            				
            
                on Jul 15, 2018 8:51 AM
            
            
						
			            		
    
		
										0
					
	
    

		
		
    
		
    
                                
                                                            
    
					
    raspberry pi has no problem making repeated starts.
    
 
    uint8_t addr_buf[2];
     struct i2c_msg msg[2] = {0};
    
 

     struct i2c_rdwr_ioctl_data msgset;
    
 
    // 16 bit address
     addr_buf[0] = (addr >> 8) & 0xff;
     addr_buf[1] = addr & 0xff;
    
 
    msg[0].addr = i2c_dev_addr;
     msg[0].flags = 0;
     msg[0].buf = addr_buf;
     msg[0].len = 2;
     msg[1].addr = i2c_dev_addr;
     msg[1].flags = I2C_M_RD;
     msg[1].buf = data;
     msg[1].len = r_len;
    
 
    msgset.msgs = msg;
     msgset.nmsgs = 2;
    
 
    if(ioctl(i2c_fd, I2C_RDWR, &msgset ) < 0) {
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

    • 





Children
	
No Data