TMS320F2809: The application issues of chips

Sharing a snippet from the DSP280x start guide for the test descriptions in case you do not have it:

For the third test, PWM is used to define the sampling frequency of the ADC.  Hope this clarifies your question.

Regards,

Joseph

Hi Tony, can you please explain what motivated you to start with such an old C2000 device?  This device is over 20 years old and we have many devices with better performance, software, tools, support, and cost.  We typically recommend F280049 as a functionally equivalent device family.

It will be difficult for us to continue to support you on F2809 as you get deeper into your development and our SW for that device is no longer supported.

Our C28 Academy is a great place to start on a device like F280049.

To answer your question, the UART on F2809 is called SCI and there are two instances on the device.  Our archived training material for F2809 is here: F280x Workshop.  

please tell me who is the customer?

The ADC converts analog voltages to digital values from 0 to 4095.  Please review TMS320x280x 2801x, 2804x Analog-to-Digital Converter(ADC) Module Reference Guide (Rev. D) to see how to convert the digital value recorded back to an analog voltage.