/* ADC internal channels related definitions */

/* Internal voltage reference VrefInt */

#define VREFINT_CAL_ADDR                   ((uint16_t*) (0x1FFF7A2AU)) /* Internal voltage reference, address of parameter VREFINT_CAL: VrefInt ADC raw data acquired at temperature 30 DegC (tolerance: +-5 DegC), Vref+ = 3.3 V (tolerance: +-10 mV). */

#define VREFINT_CAL_VREF                   ( 3300UL)                    /* Analog voltage reference (Vref+) value with which temperature sensor has been calibrated in production (tolerance: +-10 mV) (unit: mV). */

/* Temperature sensor */

#define TEMPSENSOR_CAL1_ADDR               ((uint16_t*) (0x1FFF7A2CU)) /* Internal temperature sensor, address of parameter TS_CAL1: On STM32F4, temperature sensor ADC raw data acquired at temperature  30 DegC (tolerance: +-5 DegC), Vref+ = 3.3 V (tolerance: +-10 mV). */

#define TEMPSENSOR_CAL2_ADDR               ((uint16_t*) (0x1FFF7A2EU)) /* Internal temperature sensor, address of parameter TS_CAL2: On STM32F4, temperature sensor ADC raw data acquired at temperature 110 DegC (tolerance: +-5 DegC), Vref+ = 3.3 V (tolerance: +-10 mV). */

#define TEMPSENSOR_CAL1_TEMP               (( int32_t)   30)           /* Internal temperature sensor, temperature at which temperature sensor has been calibrated in production for data into TEMPSENSOR_CAL1_ADDR (tolerance: +-5 DegC) (unit: DegC). */

#define TEMPSENSOR_CAL2_TEMP               (( int32_t)  110)           /* Internal temperature sensor, temperature at which temperature sensor has been calibrated in production for data into TEMPSENSOR_CAL2_ADDR (tolerance: +-5 DegC) (unit: DegC). */

#define TEMPSENSOR_CAL_VREFANALOG          ( 3300UL)                    /* Analog voltage reference (Vref+) voltage with which temperature sensor has been calibrated in production (+-10 mV) (unit: mV). */

float adc_mcutemp(uint16_t adcval)

{

  float dtemp = TEMPSENSOR_CAL2_TEMP - TEMPSENSOR_CAL1_TEMP;

  float dcal = TEMPSENSOR_CAL2_ADDR - TEMPSENSOR_CAL1_ADDR;

  float calv = *TEMPSENSOR_CAL1_ADDR;

  float calt = TEMPSENSOR_CAL1_TEMP;

  return (adcval - calv) * dtemp / dcal + calt;

}

从arduino ststm32抠出来的，供参考