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UART Data transfer using DMA



		

			

									
					    satya
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jul 30, 2012 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Dear Sir,
    
 
    Please provide me an example code in C for the above requirement. When I'm modifying the UART echo example for core interrupt to DMA interrupt during linking it shows error in IDDE as fatal error : Link failed and The following symbols referenced in processor "P0" could not be resolved: 'length[_length]' referenced from '.\Debug\UARTDMA transfer.doj'
    
 
    please help in this regard as soon as possible.
    
 
    regards
    
 
    satya
    
									
			        
		
    

				
						
        

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    
















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Aug 7, 2012 12:22 AM
            
            
					
      
	
      

		
		
      
					
      Hi Satya,
      
 
                  In this code the UART signals are directly looped back on the SRU. There is no external connection needed. The jumper settings also should not affect anything. 
      
 
      1. Did you check the memory buffers tx_data1 and rx_data1? Is there any data received in the rx_data1?
      
 
      2. Can you place a breakpoint inside the ISR and check?
      
 
      3. Can you capture the UART registers after running your code and send to me?
      
 
      Regards,
      
 
      Jeyanthi
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Aug 7, 2012 12:22 AM
            
            
					
      
	
      

		
		
      
					
      Hi Satya,
      
 
                  In this code the UART signals are directly looped back on the SRU. There is no external connection needed. The jumper settings also should not affect anything. 
      
 
      1. Did you check the memory buffers tx_data1 and rx_data1? Is there any data received in the rx_data1?
      
 
      2. Can you place a breakpoint inside the ISR and check?
      
 
      3. Can you capture the UART registers after running your code and send to me?
      
 
      Regards,
      
 
      Jeyanthi
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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