Products Mentioned

ADAS3022 Production
The ADAS3022 is a complete 16-bit, 1 MSPS, successive approximation–based analog-to-digital data acquisition system, which is manufactured on Analog...
Datasheet
ADAS3022 on Analog.com

Thread Details

  • State Not Answered
  • Replies 2 replies
  • Subscribers 75 subscribers
  • Views 281 views
  • Users 0 members are here
Options
 
Related Content

        

            Post
             Go back to editing
        

    

    


    

    









		


















	
	
			
	
			
		
	
	
		

	    
	    
	    		
ADAS3022 not working

		
	
				

			

									
					    xjd
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Jul 7, 2025 
				
			
			
		

		
		                     
				
        		

		    
		    		    

		      		            		        
Category: Hardware

    		        		            		    
Product Number:  ADAS3022  

    		        		    		    

		    		    
		    			

			    
I have an EVAL-ADAS3022 with the FPGA in reset and powered using a bench power supply (no connection to a EVAL-CED1Z). My bus controller is connected to the ADAS3022 running the following code (XJEase) which I expect to yield 0x7FFF but instead yields differend results, can anyone see what I am doing wrong?

			

			
									
		                             
                        

    

                                            
                 adas3022
                
                                                    
                 hardware
                
                                                    
                 Multiplexed A/D Converters
                
                                                    
                 Precision A/D Converters
                
                                
            

    
    
		


				
				        
        		

			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		


        
        
        
    
					

			





















	

	

					



			


				
	









	
    
	

  • 
	
    



	
		
	
	



    
	
    
		
    
							
					
    
		
    
		    
		    		    
			
				
									
							        
			
			
			
            
						
                            
            
            				
            
                on Jul 7, 2025 10:38 AM
            
            
						
			            		
    
		
										0
					
	
    

		
		
    
		
    
                                
                                                            
    
					
    -- CODE --

    LOCAL ReadCycle()(INT readData)
     //CONST INT SPI_CPOL := 0; // 0 or 1 - the stable/starting state of SCLK
     //CONST INT SPI_CPHA := 1; // 0 (sample SDOUT on 1st SCLK edge) or 1 (sample on 2nd SCLK edge)
    

    //CONST INT CFG_DEF_VAL := 0xF7FF;
     INT i, j, writeData;
     
     SPI_SetSampleBeforeClockEdge(FALSE)();
     
     writeData := CFG_DEF_VAL;
     
     FOR j := 0 TO 1
     SET PIO.TEST_PIO := j[0];
     PRINT("TEST PIO - ", j[0], "\n");
     
     SET PD := 0, CNV := 0, RESET := 0;
     SET PD := 1;
     NANO_SLEEP(1000);
     SET PD := 0;
     NANO_SLEEP(100 * 1000 * 1000);
     SET RESET := 1;
     NANO_SLEEP(1000);
     SET RESET := 0;
     NANO_SLEEP(100 * 1000 * 1000);
     SLEEP(100);
     
     SPI_Initialise()();
     
     ToggleConversion()();
     SET nCS := 0;
     SPI_ReadWriteSerial(16, 0)(readData);
     SET nCS := 1;
     PRINT("read - 0b", BIN(readData[15..0]), " - 0x", HEX(readData[15..0]), "\n");
     SET nCS := 0;
     SPI_ReadWriteSerial(16, 0)(readData);
     SET nCS := 1;
     PRINT("read - 0b", BIN(readData[15..0]), " - 0x", HEX(readData[15..0]), "\n");
     
     ToggleConversion()();
     SET nCS := 0;
     SPI_ReadWriteSerial(16, 0)(readData);
     SET nCS := 1;
     PRINT("read - 0b", BIN(readData[15..0]), " - 0x", HEX(readData[15..0]), "\n");
     SET nCS := 0;
     SPI_ReadWriteSerial(16, writeData)(readData);
     SET nCS := 1;
     PRINT("read - 0b", BIN(readData[15..0]), " - 0x", HEX(readData[15..0]), "\n");

     ToggleConversion()();
     SET nCS := 0;
     SPI_ReadWriteSerial(16, writeData)(readData);
     SET nCS := 1;
     PRINT("read - 0b", BIN(readData[15..0]), " - 0x", HEX(readData[15..0]), "\n");
     SET nCS := 0;
     SPI_ReadWriteSerial(16, writeData)(readData);
     SET nCS := 1;
     PRINT("read - 0b", BIN(readData[15..0]), " - 0x", HEX(readData[15..0]), "\n");
     END;
    END;
    

    LOCAL ToggleConversion()()
     INT i;
     NANO_SLEEP(1000); // instead of polling busy
     SET CNV := 0;
     NANO_SLEEP(20);
     SET CNV := 1;
     NANO_SLEEP(20);
     SET CNV := 0;
     NANO_SLEEP(1500); // instead of polling busy
    END;

    -- RESULTS 1 --
    

    read - 0b1111110001100101 - 0xFC65
    read - 0b1000111111001111 - 0x8FCF
    

    read - 0b1111110001100101 - 0xFC65
    

    read - 0b1000111111001111 - 0x8FCF
    

    read - 0b1111110001100101 - 0xFC65
    

    read - 0b0000111111001111 - 0xFCF

    -- RESULTS 2 --
    

    

    read - 0b1111110001011100 - 0xFC5C
    read - 0b1000111111001111 - 0x8FCF
    

    read - 0b1111110001011100 - 0xFC5C
    

    read - 0b1000111111001111 - 0x8FCF
    

    read - 0b1111110001011011 - 0xFC5B
    

    read - 0b0000111111001111 - 0xFCF

    The results seem to have some pattern
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

    • 

	

  • 
	
    



	
		
	
	



    
	
    
		
    
							
					
    
		
    
		    
		    		    
			
				
									
							        
			
			
			
    •  Analog Employees  
    
            
						
                            
            
            				
            
                on Jul 9, 2025 9:13 PM
            
            
						
			            		
    
		
										0
					
	
    

		
		
    
		
    
                                
                                                            
    
					
    Hi,  .
    

    

    We'll look into this and get back to you.
    

    

    Regards,
    Jo
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

    • 

	





	
			








		

		

			
    
				
  • 
					
												
						
						
						
						
						
						
						

																										
						
						

					
					
					
				
    • 
			

		

	








































     



















		        
        

            
Before You Switch

            
        

        

        

            Switching languages will make ADI Explorer unavailable. Resume your session by switching back to English and reopening ADI Explorer.