280049C ADC sampling question

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Xiaoliang Tang
Xiaoliang Tang 2022-10-10
评论： leichao zhu 2023-7-28
Hi！
I'm debugging the ADC module using TI Piccolo F280049C LaunchPad.After the program is downloaded, the result read by the ADC is always 0.Can you help to config where there is a problem with the configuration?
I use CCS to debug the LaunchPad using the generated code,the ADCResult REG remaids 0 all the time
Or can you provide a model that the ADC is working correctly?
Thanks!
  1 个评论
leichao zhu
leichao zhu 2023-7-28
I encountered the same issue, and I noticed that the register address for AdcaResultRegs in the code generated by Simulink is incorrect.

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回答（1 个）

Irene Boben
Irene Boben 2023-6-19
Hi,
The block configuration looks right. What is the analog input voltage that is given to the ADC pin?
There are two ways to test using a simple mode.
  1. Have just a DAC and ADC in the model. For F280049C launchpad, DAC - A out is internally connected to ADC A0 channel. Run this model in external mode ( "Monitor and Tune") and check whether ADC output is in range with the DAC input
  2. There is shipping example 'ADC-PWM Synchronization Using ADC Interrupt' for F28004x based board as well. This too can be refered.
Hope this helps.

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