I am using the MQX10.4 and MQX4.0.1.
I was trying to use the internal 1.2v reference for adc0.
I used ioctl(adc_dev0, ADC_IOCTL_SET_REFERENCE, ADC_REF_VREF), but when I check the register SC2 reference bits still shows 00.
I also tried to manually set the VREF_SC and SC2 register.
VREF_SC |= 0xA0;
ADC0_BASE_PTR ->SC2 |= 0x01;
but the reading result still based on VREFH and VREFL not based on internal 1.2v.
Any suggestion about this?