temp_adc.c File Reference

Temperature sensor module for LM35 or NTC (10k / 100k) sensor via analog input. More...

#include "std.h"
#include "modules/sensors/temp_adc.h"
#include "mcu_periph/adc.h"
#include "mcu_periph/uart.h"
#include "pprzlink/messages.h"
#include "modules/datalink/downlink.h"
#include <BOARD_CONFIG>
#include "modules/datalink/telemetry.h"

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Macros
#define	LM35   0
#define	NTC   1
#define	TEMP_ADC_NB_SAMPLES   DEFAULT_AV_NB_SAMPLE
#define	TEMP_ADC_SYNC_SEND   FALSE
	Send a TEMP_ADC message with every new measurement. More...

Functions
float	get_temp (uint8_t nr)
static float	calc_ntc (int16_t raw_adc, uint16_t pull_up_r, float a, float b, float c)
	Calculate the NTC tempreature in celcius based on the Steinhart equation. More...
static float	calc_lm35 (int16_t raw_temp)
static void	temp_adc_downlink (struct transport_tx *trans, struct link_device *dev)
void	temp_adc_init (void)
	Temperature ADC initialize channels. More...
void	temp_adc_periodic (void)

Variables
bool	temp_adc_sync_send = false
static float	temp_c1
static float	temp_c2
static float	temp_c3

Detailed Description

Temperature sensor module for LM35 or NTC (10k / 100k) sensor via analog input.

Definition in file temp_adc.c.

Macro Definition Documentation

LM35

#define LM35   0

Definition at line 55 of file temp_adc.c.

NTC

#define NTC   1

Definition at line 56 of file temp_adc.c.

TEMP_ADC_NB_SAMPLES

#define TEMP_ADC_NB_SAMPLES   DEFAULT_AV_NB_SAMPLE

Definition at line 91 of file temp_adc.c.

TEMP_ADC_SYNC_SEND

#define TEMP_ADC_SYNC_SEND   FALSE

Send a TEMP_ADC message with every new measurement.

Mainly for debug, use with caution, sends message at ~10Hz.

Definition at line 98 of file temp_adc.c.

Function Documentation

calc_lm35()

static float calc_lm35 ( int16_t  raw_temp )

inlinestatic

Definition at line 116 of file temp_adc.c.

Referenced by temp_adc_periodic().

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calc_ntc()

static float calc_ntc ( int16_t  raw_adc, uint16_t  pull_up_r, float  a, float  b, float  c  )

inlinestatic

Calculate the NTC tempreature in celcius based on the Steinhart equation.

Definition at line 104 of file temp_adc.c.

References ADC_RESOLUTION, and b.

Referenced by temp_adc_periodic().

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get_temp()

float get_temp

(

uint8_t

nr

)

Definition at line 37 of file temp_adc.c.

References logger_uart_parse::nr, temp_c1, temp_c2, and temp_c3.

temp_adc_downlink()

static void temp_adc_downlink ( struct transport_tx *  trans, struct link_device *  dev  )

static

Definition at line 121 of file temp_adc.c.

References dev, temp_c1, temp_c2, and temp_c3.

Referenced by temp_adc_init(), and temp_adc_periodic().

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temp_adc_init()

void temp_adc_init

(

void

)

Temperature ADC initialize channels.

Definition at line 129 of file temp_adc.c.

References adc_buf_channel(), DefaultPeriodic, register_periodic_telemetry(), TEMP_ADC_CHANNEL1, TEMP_ADC_CHANNEL2, temp_adc_downlink(), TEMP_ADC_NB_SAMPLES, temp_adc_sync_send, and TEMP_ADC_SYNC_SEND.

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temp_adc_periodic()

void temp_adc_periodic

(

void

)

Definition at line 151 of file temp_adc.c.

References calc_lm35(), calc_ntc(), DefaultChannel, DefaultDevice, TEMP_ADC_CHANNEL1_A, TEMP_ADC_CHANNEL1_B, TEMP_ADC_CHANNEL1_C, TEMP_ADC_CHANNEL1_PU_R, TEMP_ADC_CHANNEL2_A, TEMP_ADC_CHANNEL2_B, TEMP_ADC_CHANNEL2_C, TEMP_ADC_CHANNEL2_PU_R, temp_adc_downlink(), temp_adc_sync_send, temp_c1, temp_c2, and temp_c3.

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Variable Documentation

temp_adc_sync_send

bool temp_adc_sync_send = false

Definition at line 34 of file temp_adc.c.

Referenced by temp_adc_init(), and temp_adc_periodic().

temp_c1

float temp_c1

static

Definition at line 35 of file temp_adc.c.

Referenced by get_temp(), temp_adc_downlink(), and temp_adc_periodic().

temp_c2

float temp_c2

static

Definition at line 35 of file temp_adc.c.

Referenced by get_temp(), temp_adc_downlink(), and temp_adc_periodic().

temp_c3

float temp_c3

static

Definition at line 35 of file temp_adc.c.

Referenced by get_temp(), temp_adc_downlink(), and temp_adc_periodic().