63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
/**
|
|
* @file DS18B20Sensor.cpp
|
|
* @brief Wrapper for the OneWireDrv library by Frederic Blanc.
|
|
* @author Steve Spence (Published 3 March 2013 www.mbed.org)
|
|
*/
|
|
#include "DS18B20Sensor.h"
|
|
|
|
DS18B20Sensor::DS18B20Sensor(PinName pin) : _oneWirePort(pin)
|
|
{
|
|
_init = false;
|
|
nSensors = 0;
|
|
}
|
|
|
|
void DS18B20Sensor::getReading(char * text, uint8_t index)
|
|
{
|
|
uint8_t subzero, cel, cel_frac_bits;
|
|
DS18X20_read_meas( &gSensorIDs[index][0], &subzero, &cel, &cel_frac_bits);
|
|
DS18B20Sensor::getReading(text, subzero, cel, cel_frac_bits);
|
|
}
|
|
|
|
void DS18B20Sensor::getReading(char * text, uint8_t subzero, uint8_t cel, uint8_t cel_frac_bits)
|
|
{
|
|
uint16_t decicelsius;
|
|
char s[10];
|
|
float temperature;
|
|
sprintf(text,"");
|
|
sprintf(s,"%s", (subzero)?"-":"+");
|
|
strcat(text,s);
|
|
decicelsius = DS18X20_temp_to_decicel(subzero, cel, cel_frac_bits);
|
|
temperature = decicelsius;
|
|
temperature = temperature/10;
|
|
sprintf(s,"%4.1f", temperature);
|
|
strcat(text,s);
|
|
|
|
}
|
|
|
|
uint8_t DS18B20Sensor::search(void)
|
|
{
|
|
search_sensors(&nSensors, &gSensorIDs[0][0]);
|
|
_init = true;
|
|
return nSensors;
|
|
}
|
|
|
|
uint8_t DS18B20Sensor::count(void)
|
|
{
|
|
if (_init==false)
|
|
DS18B20Sensor::search();
|
|
return nSensors;
|
|
}
|
|
|
|
uint8_t DS18B20Sensor::startReading(bool includeWait)
|
|
{
|
|
uint8_t r = DS18X20_start_meas(DS18X20_POWER_EXTERN, 0 );
|
|
if ((r == DS18X20_OK) && includeWait)
|
|
wait_ms(DS18B20_TCONV_12BIT);
|
|
return r;
|
|
}
|
|
|
|
void DS18B20Sensor::getReading(uint8_t index, uint8_t *subzero, uint8_t *cel, uint8_t *cel_frac_bits)
|
|
{
|
|
DS18X20_read_meas( &gSensorIDs[index][0], subzero, cel, cel_frac_bits);
|
|
}
|