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Reading Temperature from ADUCM360 from CN0359 Kit Problem

		
	
				

			

									
					    raseyns
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Feb 3, 2026 
				
			
			
		

		
		                     
				
        		

		    
		    		    
		    			

			    
in EVAL-CN0359-EB1Z Open source code ,  we want to change the adc1  to read the Internal Temp Sensor inside the ADUCM360 .


 


We do the changes in the below ,  But the code is not working. Temp value is coming so incorrect and with - Values ( Like -29 C , -17 C )


 


static int on_adc1(int argc, char *argv[])


{


                float fVolts   = (1.2 / 268435456);      // Internal reference, calculate lsb size in volts


                float fVoltage = (adc1_result * fVolts);// Calculate ADC result in volts


                float internal_temperature = 25.0 - (((fVoltage * 1000.0) - 82.1) * 4.0);


 


pADI_ADC1->CON = (pADI_ADC1->CON & ~ADCCON_BUFBYPN_MSK & ~ADCCON_BUFBYPP_MSK & ~ADCCON_BUFPOWN_MSK & ~ADCCON_BUFPOWP_MSK & ~ADCCON_ADCCODE_MSK & ~ADCCON_ADCREF_MSK & ~ADCCON_ADCCN_MSK & ~ADCCON_ADCCP_MSK) | ADCCON_BUFBYPN | ADCCON_BUFBYPP | ADCCON_BUFPOWP | ADCCON_BUFPOWN | ADCCON_ADCCODE_INT | ADCCON_ADCREF_INTREF | ADCCON_ADCCN_TEMP | ADCCON_ADCCP_TEMP;


                pADI_ADC1->ADCCFG = (pADI_ADC1->ADCCFG & ~ADCCFG_EXTBUF_MSK) | ADCCFG_EXTBUF_OFF;


                pADI_ADC1->MDE = (pADI_ADC1->MDE & ~ADCMDE_PGA_MSK) | ADCMDE_PGA_G2;


                pADI_ADC1->MSKI = (pADI_ADC1->MSKI & ~ADC1MSKI_RDY_MSK) | ADCMSKI_RDY_EN;


 


                ADC1CON_ADCEN_BBA = true;


 


                return 0;


}






Please help us to fix this problem.




Regards...

			

			
									
		                                 
Thread Notes  

                

        
                                        
                        

    

                                            
                 microcontrollers
                
                                                    
                 temperature
                
                                                    
                 Precision Microcontrollers
                
                                                    
                 cn0359
                
                                                    
                 aducm360
                
                                
            

    
    
		


				
				        
        		

			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		


        
        
        
    
					

			





















	

	

					



			








	
	
	
	



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