Compiler/TM4C1294NCPDT: Temperature Sensor sample and hold comfiguration

Steve Kubicek

Part Number: TM4C1294NCPDT

Tool/software: TI C/C++ Compiler

I want to use the Temperature Sensor for the TM4C1294NCPDT. Section 15.3.6 of the TM4C1294NCPDT data sheet states that the sample and hold width should be configured for at least 16 ADC

clocks using the ADCSSTSHn register.

I cannot find a driver in the TivaWare™ Peripheral Driver Library that can modify the sample and hold from the default value of 0. I need to make it a 4 which will give me the minimum 16 ADC clock required.

over 8 years ago

0 Bob Crosby over 8 years ago

TI__Guru 72500 points

    ADCSequenceStepConfigure(ADC0_BASE, 0, 1, ADC_CTL_IE | ADC_CTL_TS | ADC_CTL_SHOLD_16);

It is done as part of the ADCSequenceStepConfigure() function.

0 Steve Kubicek over 8 years ago in reply to Bob Crosby

Prodigy 175 points

Thanks for the answer. ADC_CTL_SHOLD_16 is not mentioned in the TivaWare™ Peripheral Driver Library users guide. Is there another document that I need to use?

0 Bob Crosby over 8 years ago in reply to Steve Kubicek

TI__Guru 72500 points

Not that I am aware of. I found the definitions in the adc.h file where the other parameter definitions for the ADCSequenceStepConfigure() function are listed. I made a note to add this information to the TivaWare User's Guide.

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Compiler/TM4C1294NCPDT: Temperature Sensor sample and hold comfiguration