adc_temp.c File Reference

ADC Temperature Sensor configuration file.

Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries.

#include <asf.h>
#include "adc_temp.h"

Functions
float	calculate_temperature (uint16_t raw_code)
	Temperature Calculation. More...
void	configure_adc_temp (void)
	ADC Temperature Sensor mode configuration. More...
float	convert_dec_to_frac (uint8_t val)
	Decimal to Fraction Conversation. More...
void	load_calibration_data (void)
	Calibration Data. More...

Variables
struct adc_module	adc_instance
	Support and FAQ: visit Microchip Support More...
uint16_t	ADCH
uint16_t	ADCR
float	coarse_temp
float	fine_temp
float	INT1VH
float	INT1VR
float	tempH
float	tempR
float	VADCH
float	VADCR

float calculate_temperature

(

uint16_t

raw_code

)

Temperature Calculation.

This function calculate fine temperature using Equation1 and Equation 1b as mentioned in data sheet section "Temperature Sensor Characteristics" of Electrical Characteristics.

References ADC_12BIT_FULL_SCALE_VALUE_FLOAT, coarse_temp, fine_temp, INT1V_VALUE_FLOAT, INT1VH, INT1VR, tempH, tempR, VADCH, and VADCR.

Referenced by adc_temp_sensor().

void configure_adc_temp

(

void

)

ADC Temperature Sensor mode configuration.

This function enables internal temperature sensor feature of ADC with below Settings

GLCK for ADC -> GCLK_GENERATOR_1 (8MHz) CLK_ADC -> 512 KHz REFERENCE -> internal 1 V POSITIVE INPUT -> INTRENAL Temperature reference NEGATIVE INPUT -> SAMPLES -> 4 SAMPLE_LENGTH -> 4

References adc_enable(), adc_get_config_defaults(), adc_init(), adc_instance, ADC_TEMP_SAMPLE_LENGTH, and GCLK_GENERATOR_1.

Referenced by adc_temp_sensor().

float convert_dec_to_frac

(

uint8_t

val

)

Decimal to Fraction Conversation.

This function converts the decimal value into fractional and return the fractional value for temperature calculation

Referenced by load_calibration_data().

void load_calibration_data

(

void

)

Calibration Data.

This function extract the production calibration data information from Temperature log row content and store it variables for temperature calculation

References ADC_12BIT_FULL_SCALE_VALUE_FLOAT, ADCH, ADCR, convert_dec_to_frac(), INT1V_DIVIDER_1000, INT1VH, INT1VR, tempH, tempR, VADCH, and VADCR.

Referenced by adc_temp_sensor().

struct adc_module adc_instance

Support and FAQ: visit Microchip Support

Support and FAQ: visit Microchip Support

Support and FAQ: visit Microchip Support

[adc_module_inst]

Support and FAQ: visit Microchip Support

Support and FAQ: visit Microchip Support

[adc_module_inst]

Support and FAQ: visit Microchip Support

[module_inst]

Support and FAQ: visit Microchip Support

Support and FAQ: visit Microchip Support

[adc_module_inst]

Support and FAQ: visit Microchip Support

[module_inst]

Referenced by _lightsensor_init(), adc_correction_start(), adc_correction_stop(), adc_differential(), adc_hardware_averaging(), adc_oversampling(), adc_start_read_result(), adc_window_monitor(), adp_example_adc_get_value(), adp_example_adc_init(), configure_adc(), configure_adc_averaging(), configure_adc_callbacks(), configure_adc_differential(), configure_adc_sampling(), configure_adc_temp(), configure_adc_window_monitor(), configure_light_sensor(), io1_board_get_lightvalue(), io1_board_prepare_to_get_info(), main(), sam0_sensors_init(), and setup_transfer_descriptor().

uint16_t ADCH

Referenced by load_calibration_data().

uint16_t ADCR

Referenced by load_calibration_data().

float coarse_temp

Referenced by calculate_temperature().

float fine_temp

Referenced by calculate_temperature().

float INT1VH

Referenced by calculate_temperature(), and load_calibration_data().

float INT1VR

Referenced by calculate_temperature(), and load_calibration_data().

float tempH

Referenced by calculate_temperature(), and load_calibration_data().

float tempR

Referenced by calculate_temperature(), and load_calibration_data().

float VADCH

Referenced by calculate_temperature(), and load_calibration_data().

float VADCR

Referenced by calculate_temperature(), and load_calibration_data().