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ADSP-SC589 Production
The ADSP-SC589 processor is part of the new, high-performance, power-efficient, real-time series that delivers greater than 24 giga-floating-point operations...
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ADSP-SC589 on Analog.com

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FreeRTOS LWIP connection is slow



		

			

									
					    Atanasoff
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Dec 20, 2020 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi,
    

    

        I'm an SC589, CCES 2.8.3,  FreeRTOS, LWIP add-in 2.6.0.
    

    I manage to connect the system with Ethernet on TCP/IP protocol an the ARM core,
    

    I force 100mB connection (I check from the computer and that is also the connection speed)
    

    But When I send a large file about 621kb it takes more than 2 mintue for the proccesor to get all the data,
    

    Why is the data transfer is thou low?
    

    I give the task that reads the MAX priority.
    

    I attach the Lwip buffers.
    

     
    
										

    
				Add attach lwip buffers size.
    
[edited by: Atanasoff at 2:22 PM (GMT -5) on 20 Dec 2020]
				
    
						
			        
		
    

				
						
        

    
    Tags: 
                                            
                 Audio Signal Processors
                
                                                    
                 adsp-sc589
                
                                                    
                 SHARC Audio Processors/SoCs
                
                                                    
                 freertos
                
                                                    
                 lwip
                
                                
            
    
    
    

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    
















    
	
    
	
    
					



			


				
	









	
      
	

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                on Feb 3, 2021 5:02 AM
            
            
					
        
	
        

		
		
        
					
        Hi, is there any update on this? I also see the similar kind of speed issues. Surprisingly if I start the application from the flash (.ldr), communication is super fast. Something strange happening when the application is started in CCES (2.9.2) with Emulator.
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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													+1
							
			
				
									
							        
			
			
			
        •  Analog Employees  
        
            
						
                            
            
            				
            
                on Feb 3, 2021 5:20 AM
            
            
												
						in reply to mgundluru
					
									
        
	
        

		
		
        
					
        Hi, we are not aware of any issues with performance. We will take a look into this.
        

        One thing to check is that you have set up the debug session correctly for use with FreeRTOS.
        

        FreeRTOS uses the SWI interrupt, which is also used by the printf system. The debugger latches onto these SWI interrupts and looks for an IO message each time. The result is that it can considerably slow down the execution of applications under CCES.
        

        If you take a look at the FreeRTOS User Guide, section 3.1.4, this will explain how to disable the semihosting support.
        

        Please let us know if this makes a difference.
        

        Regards,
        

        Dave
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
				
						
						
				
				
		
		
        
			
		
        
	
        

        

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                on Feb 3, 2021 5:40 AM
            
            
												
						in reply to daveG
					
									
          
	
          

		
		
          
					
          Hi Dave,
          

          

          Thanks a lot for the information. Disabling the semihosting solved my problem.
          

          

          BR,
          

          Madhan
          
			
          

		
			
	      

		
		
	
          
	
          
		
          
			
		
          
	
          
	
          
		
						
						
				
						
				
				
		
		
          
			
		
          
	
          

          

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