Maxim Integrated / MAX30205_Clinical_Temperature_Sensor

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependents:   MAX30205_Human_Body_Temperature_Sensor

Embed: (wiki syntax)

« Back to documentation index

MAX30205 Class Reference
Public Member Functions | Protected Member Functions

MAX30205 Class Reference

Digital thermometer, thermostat, temperature sensor. More...

#include <max30205_cpp.h>

Public Member Functions

 MAX30205 (I2C &i2c_bus, uint8_t slave_address)
 Constructor for MAX30205 Class.
 ~MAX30205 ()
 Default destructor for MAX30205 Class.
int read_cfg_reg (uint8_t *value)
 Read register of device at slave address.
int read_reg16 (int16_t *value, char reg)
 Read register of device at slave address.
float read_reg_as_temperature (uint8_t reg)
 Reads the temperature registers.
int write_cfg_reg (uint8_t cfg)
 Writes to the configuration register.
int write_trip_low_thyst (float temperature)
 Writes to the THYST register.
int write_trip_high_tos (float temperature)
 Writes to the TOS register.
float celsius_to_fahrenheit (float temp_c)
 Converts Celsius degrees to Fahrenheit.

Protected Member Functions

int write_reg16 (int16_t value, char reg)
 Write a value to a register.

Detailed Description

Digital thermometer, thermostat, temperature sensor.

Version:
1.0001.0000

The MAX30205 temperature sensors provides accurate temperature measurements of +-0.1°C over the range of 37°C to 39°C (98.6°F to 102.2°F) The MAX30205 can operate in a low powered mode by utilizing the shutdown and one-shot mode. 8-pin TQDFN 3x3 mm package Operating temperature: 0°C to 50°C (+32°F to +122°). VDD: 2.7V to 3.7V.

 #include "mbed.h"
 #include "max32630fthr.h"
 #include "max30205.h"
 #include "max30205_cpp.h"
 #include "max30205_c.h"
 #include "USBSerial.h"
 Serial pc(USBTX, USBRX);          // Use USB debug probe for serial link
 Serial uart(P2_1, P2_0);
 void wait_sec_prompt(uint8_t time)
 {
    // Ports and serial connections
     uint32_t i;
     for (i = 0; i < time; i++) {
         pc.printf(".");
         wait(1);
     }
     pc.printf("\r\n");
 }
 MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3); 
 DigitalOut rLED(LED1);
 DigitalOut gLED(LED2);
 DigitalOut bLED(LED3);
 I2C i2cBus(P3_4, P3_5)
 int main()
 {
     uint8_t i2c_addr = MAX30205_I2C_SLAVE_ADR_00;
     float temperature;
     DigitalOut rLED(LED1, LED_OFF);
     DigitalOut gLED(LED2, LED_OFF);
     DigitalOut bLED(LED3, LED_OFF);
     gLED = LED_ON;
     MAX30205 temp_sensor(i2cBus, i2c_addr);
     i2cBus.frequency(400000);
     temperature =
         temp_sensor.read_reg_as_temperature(MAX30205_REG_TEMPERATURE);
         pc.printf("Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n", 
             temperature, temp_sensor.celsius_to_fahrenheit(temperature));
 }

Definition at line 95 of file max30205_cpp.h.

Constructor & Destructor Documentation

MAX30205 ( I2C &  i2c_bus,
uint8_t  slave_address 
)

Constructor for MAX30205 Class.

Allows user to use existing I2C object

On Entry:

Parameters:
[in]i2c_bus- pointer to existing I2C object
[in]i2c_adrs- 7-bit slave address of MAX30205

On Exit:

Returns:
None

Definition at line 44 of file max30205_cpp.cpp.

~MAX30205 ( void   )

Default destructor for MAX30205 Class.

Destroys I2C object if owner

On Entry:

On Exit:

Returns:
None

empty block

Definition at line 53 of file max30205_cpp.cpp.

Member Function Documentation

float celsius_to_fahrenheit ( float  temp_c )

Converts Celsius degrees to Fahrenheit.

Parameters:
temp_c- the temperature in Celsius degrees
Returns:
temperature in Celsius degrees

Definition at line 203 of file max30205_cpp.cpp.

int read_cfg_reg ( uint8_t *  value )

Read register of device at slave address.

Parameters:
[out]value- Read data on success
Returns:
0 on success, negative number on failure

Definition at line 59 of file max30205_cpp.cpp.

int read_reg16 ( int16_t *  value,
char  reg 
)

Read register of device at slave address.

Parameters:
[out]value- Read data on success
reg- Register address
Returns:
0 on success, negative number on failure

Definition at line 84 of file max30205_cpp.cpp.

float read_reg_as_temperature ( uint8_t  reg )

Reads the temperature registers.

Parameters:
reg- the address of the temperature register
Returns:
temperature in degrees Celsius

Definition at line 118 of file max30205_cpp.cpp.

int write_cfg_reg ( uint8_t  cfg )

Writes to the configuration register.

Parameters:
cfg- configurate word
Returns:
0 on success, negative number on failure

Definition at line 164 of file max30205_cpp.cpp.

int write_reg16 ( int16_t  value,
char  reg 
) [protected]

Write a value to a register.

Parameters:
value- value to write to the register
reg- register address
Returns:
0 on success, negative number on failure

Definition at line 138 of file max30205_cpp.cpp.

int write_trip_high_tos ( float  temperature )

Writes to the TOS register.

Parameters:
temperature- the temperature in Celsius degrees
Returns:
0 on success, negative number on failure

Definition at line 194 of file max30205_cpp.cpp.

int write_trip_low_thyst ( float  temperature )

Writes to the THYST register.

Parameters:
temperature- the temperature in Celsius degrees
Returns:
0 on success, negative number on failure

Definition at line 185 of file max30205_cpp.cpp.

Generated on Thu Jul 14 2022 23:17:13 by  doxygen 1.7.2