TMS320F280049: ADC_getTemperatureC(uint16_t tempResult, float32_t vref)

Zane Wei

Part Number: TMS320F280049

Tool/software:

Hi Team,

If use external reference 3.0V, how to set vref? 3.0 or 3.3?

How to understand "

Only external reference mode is supported for the temperature sensor.

Best Regards,

Zane

0 Benjamin Collier 6 months ago

Zane,

Zane Wei said:
If use external reference 3.0V, how to set vref? 3.0 or 3.3?

You should use 3.0

Zane Wei said:
Only external reference mode is supported for the temperature sensor.

You must use external reference. Do you have a specific question about this?

Best Regards,

Ben Collier

0 Zane Wei 6 months ago in reply to Benjamin Collier

Hi Ben Collier,

In our demo, it use internal reference. It not accord with TRM.

0 Benjamin Collier 6 months ago in reply to Zane Wei

Please allow me to get back to you tomorrow, this may be a mistake.

0 Benjamin Collier 6 months ago in reply to Benjamin Collier

Zane,

This functions works fine with internal reference, but it will be more accurate with external reference.

Best Regards,

Ben Collier

C2000 microcontrollers forum