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What is Reference Voltage for ADC in ZNP

Harshal
Intellectual 865 points

Other Parts Discussed in Thread: CC2530

Hi,

I am using ZNP-ZAP approach for my application. I want use ADC with CC2530 using command SYS_ADC_READ. Using this command I can  select the particular channel and resolution of the ADC but what is reference voltage used here. How can I modify that voltage?

With Regards,

Harshal

  • 0
    Guru 31280 points

    Hi,

    This is only my guess, since you can read voltage level the refernce

    should be ADC internal reference voltage, which is 1.15 volt.

    I don't know how can you change this.

    Hope this helps you somehow

  • 0 in reply to Igor Sherer
    Intellectual 865 points

    Hi Igor,

    I go theright answer in ZNP workspace. By default it is AVDD, you can select different values as defined in hal_adc.c Below one example

    adcRef = HAL_ADC_REF_VOLT; and HAL_ADC_REF_VOLT is defined as #define HAL_ADC_REF_VOLT    HAL_ADC_REF_AVDD

    With Regards,

    Harshal

    ADCCON3 = channel | resbits | adcRef;