• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 30 subscribers
  • Views 177 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Original question:

CCS/TMS570LC4357: Check if the SCI receiver is in idle state

CCS/TMS570LC4357: ADC Pin Signals

user6305667
Prodigy 230 points
Part Number: TMS570LC4357

Tool/software: Code Composer Studio

Hello,

I have been following the example adcDisplay for the TMS570LC4357 model. In that example, the pins 0 and 1 of the ADC1 group 1 are enabled. The code works fine and I can see through the serial terminal a stream of data values. However, I do not really understand what mean those values since there is nothing connected to pins 0 and 1 (W14 and V17) in the board. 

Can someone shed some light on this issue?

Best regards,

Sergio

  • 0
    TI__Guru**** 197036 points

    Hello Sergio,

    If the ADC pin is floating, it can pick up the noise, and the sampled value means nothing. Please connect the pin to GND or 3.3V, and check the sampled value.

    It is common practice to add external components to the ADINx pins that scale and filter the signal from the analog source.