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/*
* Copyright 2020 Daniel Friesel
*
* SPDX-License-Identifier: BSD-2-Clause
*
* Driver for LM75B Digital Temperature Sensor and Thermal Watchdog.
*/
#include "driver/lm75.h"
#if defined(CONFIG_meta_driver_hardware_i2c)
#include "driver/i2c.h"
#elif defined(CONFIG_driver_softi2c)
#include "driver/soft_i2c.h"
#endif
#include <stdint.h>
float LM75::getTemp()
{
txbuf[0] = 0;
rxbuf[0] = 0;
rxbuf[1] = 0;
i2c.xmit(address, 1, txbuf, 2, rxbuf);
return (int8_t)rxbuf[0] + (rxbuf[1] / 256.0);
}
unsigned int LM75::getOS()
{
txbuf[0] = 0x03;
rxbuf[0] = 0;
rxbuf[1] = 0;
i2c.xmit(address, 1, txbuf, 2, rxbuf);
return rxbuf[0];
}
unsigned int LM75::getHyst()
{
txbuf[0] = 0x02;
rxbuf[0] = 0;
rxbuf[1] = 0;
i2c.xmit(address, 1, txbuf, 2, rxbuf);
return rxbuf[0];
}
void LM75::setOS(signed char os)
{
txbuf[0] = 0x03;
txbuf[1] = os;
txbuf[2] = 0;
i2c.xmit(address, 3, txbuf, 0, rxbuf);
}
void LM75::setHyst(signed char hyst)
{
txbuf[0] = 0x02;
txbuf[1] = hyst;
txbuf[2] = 0;
i2c.xmit(address, 3, txbuf, 0, rxbuf);
}
void LM75::init()
{
txbuf[0] = 0x01;
txbuf[1] = 0x00;
i2c.xmit(address, 2, txbuf, 0, rxbuf);
}
void LM75::shutdown()
{
txbuf[0] = 0x01;
txbuf[1] = 0x01;
i2c.xmit(address, 2, txbuf, 0, rxbuf);
}
LM75 lm75(0x48);
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