#include <stdbool.h>
#include <onewire.h>

// DS2438 1-wire commands
#define DS2438_READSP 0xBE
#define DS2438_WRITESP 0x4E
#define DS2438_COPYSP 0x48
#define DS2438_RECALL 0xB8
#define DS2438_CONV_T 0x44
#define DS2438_CONV_V 0xB4

// DS2438 configuration flags
// IAD: Enable current-measurement ADC
#define DS2438_CONF_IAD 0x01
// CA: Enable current accumulator
#define DS2438_CONF_CA 0x02
// EE: Store current accumulator in EEPROM
#define DS2438_CONF_EE 0x04
// AD: 0 = measure VAD, 1 = measure VDD
#define DS2438_CONF_AD 0x08
// TB: Temperature conversion in progress
#define DS2438_CONF_TB 0x10
// NVB: EEPROM write in progress
#define DS2438_CONF_NVB 0x20
// ADB: Voltage conversion in progress
#define DS2438_CONF_ADB 0x40

bool ds2438_readsp(const struct owaddr *addr, int page, unsigned char *buf);
bool ds2438_writesp(const struct owaddr *addr, int page, const unsigned char *buf);
bool ds2438_config(const struct owaddr *addr, unsigned char config);
float ds2438_temperature(const struct owaddr *addr);
float ds2438_humidity(const struct owaddr *addr);