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TMS320F2800157-Q1: Information is required on OTP slope address and Offset address.

Rohit Nilagar
Prodigy 30 points

Part Number: TMS320F2800157-Q1
Other Parts Discussed in Thread: C2000WARE

Hi

I need an Information regarding OTP Slope address and OTP Offset address in order to Calculate temperature through ADC values of Internal temperature Sensor. There is no information available in the datasheet. Could you please help me with this?

Thank you,

Rohit Nilagar

  • 0
    TI__Mastermind 19795 points

    Hi Rohit,

    Thank you for your question. I am checking with experts on this. Please provide till end of week for response.


    Regards,

    Vince

  • 0 in reply to Vince
    TI__Mastermind 19795 points

    Hi Rohit,

    Thanks for your question. C2000Ware driverlib actually already has these values defined for your use in the "adc.h" file for each device. Please install the latest C2000Ware (released within the past week) and see the following defines and functions:

    #define ADC_EXT_REF_TSSLOPE  (*(int16_t *)((uintptr_t)0x701B2))
#define ADC_EXT_REF_TSOFFSET (*(int16_t *)((uintptr_t)0x701B3))

// temp sense calculation
static inline int16_t
ADC_getTemperatureC(uint16_t tempResult, float32_t vref)
{
    float32_t temp;

    //
    // Read temp sensor slope and offset locations from OTP and convert
    //
    temp = (float32_t)tempResult * (vref / 2.5F);
    return((int16_t)((((int32_t)temp - ADC_EXT_REF_TSOFFSET) * 4096) /
                     ADC_EXT_REF_TSSLOPE));
}

    Regards,

    Vince