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Help on ADSP-21489 firmware update via RS-232



		

			

									
					    MarcZ
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Oct 1, 2013 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi,
    
 
    We are looking for some assistance with adding the ability to update our
    
 
    ADSP-21489 firmware via RS-232. The fundamentals of what we want to do is
    
 
    discussed in Application Note EE-345, and we have played around with this a
    
 
    little bit, but never got it to work completely. We can continue to puzzle
    
 
    through this ourselves, but we'd rather find a consultant who can help add
    
 
    this ability into our existing software and we'll be happy to pay someone to
    
 
    help in this regard.
    
 
    If you have experience in this area and have some extra time on your hands,
    
 
    and want to earn some extra money in your pocket, please contact me.
    
 
    (Ideally the forum has some private messaging system, otherwise you could
    
 
    leave an email address. Let me know your thoughts...)
    
 
    Thank you,
    
 
    Marc
    
									
			        
		
    

				
						
        

    
    Tags: 
                                            
                 Audio Signal Processors
                
                                                    
                 adsp-21489
                
                                                    
                 SHARC Audio Processors/SoCs
                
                                
            
    
    
    

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    
















    
	
    
	
    
					



			








	
	
	
	



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                on Oct 2, 2014 9:42 PM
            
            
					
        
	
        

		
		
        
					
        Hi Craig,
        
 
        I followed the steps for getting a second stage loader in CCES. However, it is not working. Could you please have a look at the attached project and see what I did wrong.
        
 
        The project
        
 
          
  
        1. reads a blink.ldr file (built into the project as a C array),
          2. 
  
        2. writes the ldr to flash
          3. 
  
        3. and then jumps to the second stage loader (_load_application in boot_kernel.s). 
          4. 
 
        
 

        
 
        The problem is it doesn't start the blink program. Sometimes it jumps back to the start of itself, sometimes gets lost somewhere.
        
 
        If the flash offset of the blink.ldr is set to 0, the blink.ldr will start after reset. So it seems the flash programming works fine.
        
 
        One question is that I need to replace final_init_loop with _lib_RSTI, but lib_RSTI is nowhere to be found in CCES. What is it?
        
 
        Thanks and have a good day.
        
			
        

		
			
	      

		
				dfu.zip
			
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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													0
							
			
				
									
							        
			
			
			
          
            
						
                            
            
            				
            
                on Oct 2, 2014 9:42 PM
            
            
					
          
	
          

		
		
          
					
          Hi Craig,
          
 
          I followed the steps for getting a second stage loader in CCES. However, it is not working. Could you please have a look at the attached project and see what I did wrong.
          
 
          The project
          
 
            
  
          1. reads a blink.ldr file (built into the project as a C array),
            2. 
  
          2. writes the ldr to flash
            3. 
  
          3. and then jumps to the second stage loader (_load_application in boot_kernel.s). 
            4. 
 
          
 

          
 
          The problem is it doesn't start the blink program. Sometimes it jumps back to the start of itself, sometimes gets lost somewhere.
          
 
          If the flash offset of the blink.ldr is set to 0, the blink.ldr will start after reset. So it seems the flash programming works fine.
          
 
          One question is that I need to replace final_init_loop with _lib_RSTI, but lib_RSTI is nowhere to be found in CCES. What is it?
          
 
          Thanks and have a good day.
          
			
          

		
			
	      

		
				dfu.zip
			
	
          
	
          
		
          
			
		
          
	
          
	
          
		
						
						
				
						
				
				
		
		
          
			
		
          
	
          

          

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