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AD5941 Recommended for New Designs
The AD5940 and AD5941 are high precision, low power analog front ends (AFEs) designed for portable applications that require high precision, electrochemical...
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AD5941 on Analog.com

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CN0510 Discrepancy between Firmware and SensorPal



		

			

									
					    karenhinh
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Apr 23, 2023 
				
			
			
		
    

				
		
    
		    		    
		    
		    		            		        
    Category: Hardware
    
    		        		        		    		    	
			
    Hi there!
    

    We are using the CN0510 board to get battery impedance data. It worked well through SensorPal to read frequencies above 1 Hz, but once we went the route of flashing firmware (we are attempting to read at frequencies below 1 Hz, so we followed the CN0510 user guide to flash firmware via Keil), the data we received is quite different than the data through SensorPal. 
    

    We conducted the same exact measurements (1Hz to 6000Hz with 60 points in between) via the firmware route as well as SensorPal, and the results are different. We only modified the file "AD5940Main.c" in firmware. We modified specifically "AD5940BATStructInit" and changed only the "SweepCfg.SweepStart" and "SweepCfg.SweepStop" values. Let us know how we can resolve this discrepancy, as we'd like to collect data in the sub 1 Hz range via the firmware route. 
    

    Thanks!
    

    Karen
    
									
			        
		
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
			                            
                        
                on Apr 23, 2023 8:57 PM
            
            
					
      
	
      

		
		
      
					
      Hi Karen,
      

      

      You mentioned modifying AD5940Main.C, have you tried running the program without making any changes? If so, have you encountered any errors from it? 
      

      May I know if there's any other modification made aside from the AD5940BATStructInit?
      

      

      Regards,
      

      Michelle
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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													0
							
			
				
									
							        
			
			
			
        
            
			                            
                        
                on Apr 24, 2023 11:40 PM
            
            
												
						in reply to mso
					
									
        
	
        

		
		
        
					
        Hi Michelle,
        

        Without making any changes, we still get data that doesn't match what we are getting in SensorPal.
        

        This is the data from firmware (with no changes):
        

        data from firmware (no changes)
        

        This is the data from SensorPal:
        

         
        

        We've made no other modifications apart from AD5940BATStructInit -- see the highlighted sections below for what we have tried changing:
        

         
        

        Thanks!
        

        Karen
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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													0
							
			
				
									
							        
			
			
			
          
            
			                            
                        
                on Apr 24, 2023 11:40 PM
            
            
												
						in reply to mso
					
									
          
	
          

		
		
          
					
          Hi Michelle,
          

          Without making any changes, we still get data that doesn't match what we are getting in SensorPal.
          

          This is the data from firmware (with no changes):
          

          data from firmware (no changes)
          

          This is the data from SensorPal:
          

           
          

          We've made no other modifications apart from AD5940BATStructInit -- see the highlighted sections below for what we have tried changing:
          

           
          

          Thanks!
          

          Karen
          
			
          

		
			
	      

		
		
	
          
	
          
		
          
			
		
          
	
          
	
          
		
						
						
				
						
				
				
		
		
          
			
		
          
	
          

          

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