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BF70x spi flash memory-mapped



		

			

									
					    s2c97
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Feb 22, 2016 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    I currently have the spi2 interface setup to read/write from my spiflash (winbond w25q32bv).  I would like to setup my spi flash as memory-mapped to my dedicated spi2 memory in the BF707.  Anybody has it configured that way and could share his input on how to configure it?
    
 
    kind regards,
    
 
    s2c97
    
									
			        
		
    

				
						
        

    
    Tags: 
                                            
                 spi
                
                                                    
                 bf706
                
                                                    
                 bf70x
                
                                                    
                 spi-flash
                
                                                    
                 memory-mapped
                
                                        
                                            
                
                
                                
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Feb 29, 2016 5:50 PM
            
            
					
      
	
      

		
		
      
					
      Hi Romeo,
      
 
      To enable Memory Mapped Mode for SPI2 all you need to do is set the SPI_CTL.MMSE bit, then you can adjust the SPI_MMRDH for your specific SPI device.
      
 
      Now, in Memory Mapped Mode you cannot write to the SPI device, only read. This is useful if you are only going to be executing from the SPI memory locations. If you intend to write to the SPI memory locations then Memory Mapped Mode will not work for you.
      
 
      -Dave
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Aug 2, 2018 11:23 AM
            
            
					
      
	
      

		
		
      
					
      This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

      Thank you,
      EZ Admin
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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