LAUNCHXL2-RM57L: adc_data[0].value gives what exactly?

Apurv Mishra

Intellectual 750 points

Part Number: LAUNCHXL2-RM57L
Other Parts Discussed in Thread: HALCOGEN

In the following screenshot, it is the example code for ADC for Hercules RM57Lx LaunchPad from HALCoGen.

What does the statement "value = adc_data[0].value" give exactly??

over 7 years ago

0 Sunil Oak over 7 years ago

TI__Mastermind 49120 points

Each ADC conversion result includes a 12-/10-/8-bit conversion result along with the channel id for which the result belongs. This composite value is returned as part of the adc_data structure. The statement value = adc_data[0].value gets the conversion result from this structure.

0 Apurv Mishra over 7 years ago in reply to Sunil Oak

Intellectual 750 points

Like in the conversation result (adc_data.value) for a 12-bit ADC, I'm getting 2900. Is it the parts of 4096? As in, 2900 out 4096 with 4096 representing maximum voltage for a 12-bit ADC.

0 Sunil Oak over 7 years ago in reply to Apurv Mishra

TI__Mastermind 49120 points

Yes. The ADC chapter in the reference manual includes a formula for the ADC conversion result.

0 Apurv Mishra over 7 years ago in reply to Sunil Oak

Intellectual 750 points

Thank you and sorry, I was doing a calculation mistake.

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LAUNCHXL2-RM57L: adc_data[0].value gives what exactly?