Other Parts Discussed in Thread: TM4C1236D5PM, INA301, TM4C123GH6PM, INA198
Hello, Bob
Bob said> Using the 64 pin part with VADC connected to VREFP, let's use a reference voltage of 3.30V.
I have been designing circuit and PCB artwork for a while, but parts supply was delayed due to the corona virus.
I wanted to apply VREFP 3.3V in the source code, so I saw the ADCReferenceSet ( ) function in the SW-TM4C-DRL-UG documentation.
But there is no procedural way to change 3.3V , also looked at the registers inside the Datasheet but didn't find.
TM4C1236D5PM (64 Pin) without VREFP, VDDA (Min 2.97 Nom 3.3 Max 3.63) 3.3V power supply.
Q1> How do I modify the source code to change 3.3V?
[ Acquire.c/AcquireInit ( ) ]
ADCReferenceSet(ADC0_BASE, ADC_REF_EXT_3V);
ADCReferenceSet(ADC1_BASE, ADC_REF_EXT_3V);
[ adc.h ]
#define ADC_REF_EXT_3V 0x00000001 // External 3V reference
Best Regards,
Jame,Shin