/*!
* Get the temperature pointer
* designed for BM version of I2C_RTOS demo
* from the ISR context
*/
uint8_t* get_temp_pointer(void)
{
uint32_t adcValue;
// ADC starts conversion
ADC16_DRV_ConfigConvChn(HWADC_INSTANCE, 0U, &tempSnseChannelConfig);
// poll to complete status and read back result
ADC16_DRV_WaitConvDone(HWADC_INSTANCE, 0U);
adcValue = ADC16_DRV_GetConvValueRAW(HWADC_INSTANCE, 0U);
adcValue = ADC16_DRV_ConvRAWData(adcValue, false, tempSnseAdcConfig.resolutionMode);
// ADC stop conversion
ADC16_DRV_PauseConv(HWADC_INSTANCE, 0U);
// convert to temperature
Temperature = (M1 - (adcValue - VTEMP25_ADC) * M2)/K;
return (uint8_t*)&Temperature;
}
/*!
* @brief Parameters calibration: VDD and ADCR_TEMP25
*
* This function used BANDGAP as reference voltage to measure vdd and
* calibrate V_TEMP25 with that vdd value.
*/
void calibrateParams(void)
{
adc16_chn_config_t adcChnConfig;
pmc_bandgap_buffer_config_t pmcBandgapConfig = {
.enable = true,
#if FSL_FEATURE_PMC_HAS_BGEN
.enableInLowPower = false,
#endif
#if FSL_FEATURE_PMC_HAS_BGBDS
.drive = kPmcBandgapBufferDriveLow,
#endif
};
uint32_t bandgapValue; // ADC value of BANDGAP
uint32_t vdd; // VDD in mV
// Enable BANDGAP reference voltage
PMC_HAL_BandgapBufferConfig(PMC_BASE_PTR, &pmcBandgapConfig);
// Configure the conversion channel
// differential and interrupt mode disable.
adcChnConfig.chnIdx = kAdc16Chn27; // ADC Bandgap channel
#if FSL_FEATURE_ADC16_HAS_DIFF_MODE
adcChnConfig.diffConvEnable = false;
#endif
adcChnConfig.convCompletedIntEnable = false;
ADC16_DRV_ConfigConvChn(ADC_INSTANCE, 0U, &adcChnConfig);
// Wait for the conversion to be done
ADC16_DRV_WaitConvDone(ADC_INSTANCE, 0U);
// Get current ADC BANDGAP value and format it.
bandgapValue = ADC16_DRV_GetConvValueSigned(ADC_INSTANCE, 0U);
// Calculates bandgapValue in 16bit resolution
// from 12bit resolution to calibrate.
#if (FSL_FEATURE_ADC16_MAX_RESOLUTION < 16)
bandgapValue = bandgapValue << 4U;
#endif
// ADC stop conversion
ADC16_DRV_PauseConv(ADC_INSTANCE, 0U);
// Get VDD value measured in mV
// VDD = (ADCR_VDD x V_BG) / ADCR_BG
vdd = ADCR_VDD * V_BG / bandgapValue;
// Calibrate ADCR_TEMP25
// ADCR_TEMP25 = ADCR_VDD x V_TEMP25 / VDD
adcrTemp25 = ADCR_VDD * V_TEMP25 / vdd;
// Calculate conversion value of 100mV.
// ADCR_100M = ADCR_VDD x 100 / VDD
adcr100m = ADCR_VDD * 100/ vdd;
// Disable BANDGAP reference voltage
pmcBandgapConfig.enable = false;
PMC_HAL_BandgapBufferConfig(PMC_BASE_PTR, &pmcBandgapConfig);
}
/*!
* Get the temperature pointer
* designed for BM version of I2C_RTOS demo
* from the ISR context
*/
uint8_t* get_temp_pointer(void)
{
uint32_t adcValue;
// ADC starts conversion
ADC16_DRV_ConfigConvChn(ADC_INSTANCE, 0U, &tempSnseChannelConfig);
// poll to complete status and read back result
ADC16_DRV_WaitConvDone(ADC_INSTANCE, 0U);
// Get ADC converted value
adcValue = ADC16_DRV_GetConvValueSigned(ADC_INSTANCE, 0U);
// ADC stop conversion
ADC16_DRV_PauseConv(ADC_INSTANCE, 0U);
// Calculates adcValue in 16bit resolution
// from 12bit resolution in order to convert to temperature.
#if (FSL_FEATURE_ADC16_MAX_RESOLUTION < 16)
adcValue = adcValue << 4U;
#endif
// convert to temperature
// Multiplied by 1000 because M in uM/oC
// temperature = 25 - (ADCR_T - ADCR_TEMP25) * 100*1000 / ADCR_100M*M
temperature = (int32_t)(STANDARD_TEMP - ((int32_t)adcValue - (int32_t)adcrTemp25) * 100000 /(int32_t)(adcr100m*M));
return (uint8_t*)&temperature;
}
/*
** ###################################################################
**
** This file was created by Processor Expert 10.5 [05.21]
** for the Freescale Kinetis series of microcontrollers.
**
** ###################################################################
*/
void calibrateParams(void)
{
adc16_chn_config_t adcChnConfig;
#if FSL_FEATURE_ADC16_HAS_HW_AVERAGE
adc16_hw_average_config_t userHwAverageConfig;
#endif
pmc_bandgap_buffer_config_t pmcBandgapConfig = {
.enable = true,
#if FSL_FEATURE_PMC_HAS_BGEN
.enableInLowPower = false,
#endif
#if FSL_FEATURE_PMC_HAS_BGBDS
.drive = kPmcBandgapBufferDriveLow,
#endif
};
uint32_t bandgapValue = 0; // ADC value of BANDGAP
uint32_t vdd = 0; // VDD in mV
#if FSL_FEATURE_ADC16_HAS_CALIBRATION
// Auto calibration
adc16_calibration_param_t adcCalibraitionParam;
ADC16_DRV_GetAutoCalibrationParam(ADC16_INSTANCE, &adcCalibraitionParam);
ADC16_DRV_SetCalibrationParam(ADC16_INSTANCE, &adcCalibraitionParam);
#endif // FSL_FEATURE_ADC16_HAS_CALIBRATION.
// Enable BANDGAP reference voltage
PMC_HAL_BandgapBufferConfig(PMC_BASE_PTR, &pmcBandgapConfig);
#if FSL_FEATURE_ADC16_HAS_HW_AVERAGE
// Use hardware average to increase stability of the measurement.
userHwAverageConfig.hwAverageEnable = true;
userHwAverageConfig.hwAverageCountMode = kAdc16HwAverageCountOf32;
ADC16_DRV_ConfigHwAverage(ADC16_INSTANCE, &userHwAverageConfig);
#endif // FSL_FEATURE_ADC16_HAS_HW_AVERAGE
// Configure the conversion channel
// differential and interrupt mode disable.
adcChnConfig.chnIdx = (adc16_chn_t)ADC16_BANDGAP_CHN;
#if FSL_FEATURE_ADC16_HAS_DIFF_MODE
adcChnConfig.diffConvEnable = false;
#endif
adcChnConfig.convCompletedIntEnable = false;
ADC16_DRV_ConfigConvChn(ADC16_INSTANCE, ADC16_CHN_GROUP, &adcChnConfig);
// Wait for the conversion to be done
ADC16_DRV_WaitConvDone(ADC16_INSTANCE, ADC16_CHN_GROUP);
// Get current ADC BANDGAP value and format it.
bandgapValue = ADC16_DRV_GetConvValueSigned(ADC16_INSTANCE, ADC16_CHN_GROUP);
// Calculates bandgapValue in 16bit resolution
// from 12bit resolution to calibrate.
#if (FSL_FEATURE_ADC16_MAX_RESOLUTION < 16)
bandgapValue = bandgapValue << 4;
#endif
// ADC stop conversion
ADC16_DRV_PauseConv(ADC16_INSTANCE, ADC16_CHN_GROUP);
// Get VDD value measured in mV
// VDD = (ADCR_VDD x V_BG) / ADCR_BG
vdd = ADCR_VDD * V_BG / bandgapValue;
// Calibrate ADCR_TEMP25
// ADCR_TEMP25 = ADCR_VDD x V_TEMP25 / VDD
adcrTemp25 = ADCR_VDD * V_TEMP25 / vdd;
// Calculate conversion value of 100mV.
// ADCR_100M = ADCR_VDD x 100 / VDD
adcr100m = ADCR_VDD*100/ vdd;
// Disable BANDGAP reference voltage
pmcBandgapConfig.enable = false;
PMC_HAL_BandgapBufferConfig(PMC_BASE_PTR, &pmcBandgapConfig);
}
/*!
* @brief Gets current temperature of chip.
*
* This function gets convertion value, converted temperature and print them to terminal.
*/
void ADC16_Measure(void)
{
adc16_chn_config_t chnConfig;
// Configure the conversion channel
// differential and interrupt mode disable.
chnConfig.chnIdx = (adc16_chn_t)ADC16_TEMPERATURE_CHN;
#if FSL_FEATURE_ADC16_HAS_DIFF_MODE
chnConfig.diffConvEnable = false;
#endif
chnConfig.convCompletedIntEnable = false;
// Software trigger the conversion.
ADC16_DRV_ConfigConvChn(ADC16_INSTANCE, ADC16_CHN_GROUP, &chnConfig);
//ADC16_DRV_ConfigConvChn(FSL_ADCONV1, 0U, &adConv1_ChnConfig0);
// Wait for the conversion to be done.
ADC16_DRV_WaitConvDone(ADC16_INSTANCE, ADC16_CHN_GROUP);
// Fetch the conversion value.
adcValue = ADC16_DRV_GetConvValueSigned(ADC16_INSTANCE, ADC16_CHN_GROUP);
// Show the current temperature value.
PRINTF("\r\n ADC converted value: %ld\t", adcValue );
// Calculates adcValue in 16bit resolution
// from 12bit resolution in order to convert to temperature.
#if (FSL_FEATURE_ADC16_MAX_RESOLUTION < 16)
adcValue = adcValue << 4;
#endif
PRINTF("\r\n Temperature %ld\r\n", get_current_temperature(adcValue));
// Pause the conversion.
ADC16_DRV_PauseConv(ADC16_INSTANCE, ADC16_CHN_GROUP);
}
/*!
* @brief calibrate param for adc.
*/
void adc16CalibrateParams(void)
{
#if FSL_FEATURE_ADC16_HAS_CALIBRATION
adc16_calibration_param_t adcCalibraitionParam;
#endif
adc16_converter_config_t adcUserConfig;
#if FSL_FEATURE_ADC16_HAS_HW_AVERAGE
adc16_hw_average_config_t hwAverageConfig;
#endif
adc16_chn_config_t adcChnConfig;
pmc_bandgap_buffer_config_t pmcBandgapConfig = {
.enable = true,
#if FSL_FEATURE_PMC_HAS_BGEN
.enableInLowPower = false,
#endif
#if FSL_FEATURE_PMC_HAS_BGBDS
.drive = kPmcBandgapBufferDriveLow,
#endif
};
uint32_t bandgapValue = 0; /*! ADC value of BANDGAP */
uint32_t vdd = 0; /*! VDD in mV */
// Enable BANDGAP reference voltage
PMC_HAL_BandgapBufferConfig(PMC_BASE_PTR, &pmcBandgapConfig);
// Initialization ADC for
// 16bit resolution, interrupt mode, hw trigger disabled.
// normal convert speed, VREFH/L as reference,
// disable continuous convert mode.
ADC16_DRV_StructInitUserConfigDefault(&adcUserConfig);
adcUserConfig.resolution = kAdc16ResolutionBitOf16;
adcUserConfig.continuousConvEnable = false;
adcUserConfig.clkSrc = kAdc16ClkSrcOfAsynClk;
#if BOARD_ADC_USE_ALT_VREF
adcUserConfig.refVoltSrc = kAdc16RefVoltSrcOfValt;
#endif
ADC16_DRV_Init(HWADC_INSTANCE, &adcUserConfig);
#if FSL_FEATURE_ADC16_HAS_HW_AVERAGE
hwAverageConfig.hwAverageEnable = true;
hwAverageConfig.hwAverageCountMode = kAdc16HwAverageCountOf32;
ADC16_DRV_ConfigHwAverage(HWADC_INSTANCE, &hwAverageConfig);
#endif // FSL_FEATURE_ADC16_HAS_HW_AVERAGE
#if FSL_FEATURE_ADC16_HAS_CALIBRATION
// Auto calibration
ADC16_DRV_GetAutoCalibrationParam(HWADC_INSTANCE, &adcCalibraitionParam);
ADC16_DRV_SetCalibrationParam(HWADC_INSTANCE, &adcCalibraitionParam);
#endif
adcChnConfig.chnIdx = ADC16_BANDGAP_CHN;
#if FSL_FEATURE_ADC16_HAS_DIFF_MODE
adcChnConfig.diffConvEnable = false;
#endif
adcChnConfig.convCompletedIntEnable = false;
ADC16_DRV_ConfigConvChn(HWADC_INSTANCE, CHANNEL_0, &adcChnConfig);
// Wait for the conversion to be done
ADC16_DRV_WaitConvDone(HWADC_INSTANCE, CHANNEL_0);
// Get current ADC BANDGAP value
bandgapValue = ADC16_DRV_GetConvValueSigned(HWADC_INSTANCE, CHANNEL_0);
// ADC stop conversion
ADC16_DRV_PauseConv(HWADC_INSTANCE, CHANNEL_0);
// Get VDD value measured in mV: VDD = (ADCR_VDD x V_BG) / ADCR_BG
vdd = ADCR_VDD * V_BG / bandgapValue;
// Calibrate ADCR_TEMP25: ADCR_TEMP25 = ADCR_VDD x V_TEMP25 / VDD
sAdcrTemp25 = ADCR_VDD * V_TEMP25 / vdd;
// ADCR_100M = ADCR_VDD x M x 100 / VDD
sAdcr100m = (ADCR_VDD * M) / (vdd * 10);
#if FSL_FEATURE_ADC16_HAS_HW_AVERAGE
hwAverageConfig.hwAverageEnable = false;
ADC16_DRV_ConfigHwAverage(HWADC_INSTANCE, &hwAverageConfig);
#endif // FSL_FEATURE_ADC16_HAS_HW_AVERAGE
// Disable BANDGAP reference voltage
pmcBandgapConfig.enable = false;
PMC_HAL_BandgapBufferConfig(PMC_BASE_PTR, &pmcBandgapConfig);
}
/*!
* @brief Getting current temperature value.
* @return Current temperature.
*/
int32_t adc16GetCurrentTempValue(void)
{
int32_t currentTemperature = 0;
currentTemperature = (int32_t)(STANDARD_TEMP - ((int32_t)sAdcValue - (int32_t)sAdcrTemp25) * 100 / (int32_t)sAdcr100m);
return currentTemperature;
}