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Re: Need a code example of slave spi-dma for 21262



		

			

									
					    pingu
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on May 18, 2011 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Dear Jeyanthi :
    
 
                              I download your attached file 21262_SPI_Slave.zip, I have some question hope you can help me ?
    
 
    1.The attached file code is for SPI slave recevice?
    
 
    2.Do you have example code is for SPI slave transmit?
    
 
    3.Can you give some advice to me about my problem? I really don't know where is the problem!  Thanks so much!
    
 
      http://ez.analog.com/message/25166#25166
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
			                            
                        
                on May 18, 2011 3:43 PM
            
            
					
      
	
      

		
		
      
					
      Hi Pingu,
      
 
                 The 21262_SPI_Slave example code uses the SPI slave in receive mode. The same code can be modified for transmit operation as below:
      
 
      void main()
      {
       *pSPICTL = 0;
       
       interrupt(SIG_SPIH, Transmit_data);
       
       *pSPICTL =  SPIEN | TIMOD1 | WL32;
      
 
       while(1)
       {
        asm("nop;"); 
       }
      }
      
 
      void Transmit_data(int i)
      {
      *pTXSPI =  source[int_count];
       int_count++; 
       
       if(int_count >= N)
        *pSPICTL = 0; 
      }
      
 
      Regarding the issue seen on the other post, I could see that Mitesh has suggested few things on his last post. It will be good if you can post your follow-up questions on the same post to avoid any duplication efforts.
      
 
      Hope this helps.
      
 
      Best Regards,
      
 
      Jeyanthi
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
				
						
				
				
		
		
      
			
		
      
	
      

      

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      •  Analog Employees  
      
            
			                            
                        
                on May 18, 2011 3:43 PM
            
            
					
      
	
      

		
		
      
					
      Hi Pingu,
      
 
                 The 21262_SPI_Slave example code uses the SPI slave in receive mode. The same code can be modified for transmit operation as below:
      
 
      void main()
      {
       *pSPICTL = 0;
       
       interrupt(SIG_SPIH, Transmit_data);
       
       *pSPICTL =  SPIEN | TIMOD1 | WL32;
      
 
       while(1)
       {
        asm("nop;"); 
       }
      }
      
 
      void Transmit_data(int i)
      {
      *pTXSPI =  source[int_count];
       int_count++; 
       
       if(int_count >= N)
        *pSPICTL = 0; 
      }
      
 
      Regarding the issue seen on the other post, I could see that Mitesh has suggested few things on his last post. It will be good if you can post your follow-up questions on the same post to avoid any duplication efforts.
      
 
      Hope this helps.
      
 
      Best Regards,
      
 
      Jeyanthi
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
				
						
				
				
		
		
      
			
		
      
	
      

      

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