How we can set reference voltage for ADC channel by using ADC_IOCTL_SET_REFERENCE ?

[pramodk_g_]

Hi everyone,

                   I using TWR K60D100M module with MQX 4.0.1 on CW 10.5. I have configured ADC channels according to MQX example. But I couldn't set reference voltage for ADC channel. I think this can be set by using ADC_IOCTL_SET_REFERENCE command. But how i can use this command to set reference? . Also what are the different reference options?

Thanks

Pramod