2017-09-13 02:58:18 -04:00
|
|
|
//
|
2013-09-30 11:00:55 -04:00
|
|
|
// FILE: hmc6352.cpp
|
|
|
|
// AUTHOR: Rob Tillaart
|
2022-11-09 08:34:02 -05:00
|
|
|
// VERSION: 0.3.2
|
2020-11-27 05:16:22 -05:00
|
|
|
// PURPOSE: Arduino library for HMC6352 digital compass sensor
|
2013-09-30 11:00:55 -04:00
|
|
|
//
|
2022-11-09 08:34:02 -05:00
|
|
|
// HISTORY: see changelog.md
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:00:55 -04:00
|
|
|
|
2020-11-27 05:16:22 -05:00
|
|
|
#include "hmc6352.h"
|
2013-09-30 11:00:55 -04:00
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2020-11-27 05:16:22 -05:00
|
|
|
#define HMC_GET_DATA 0x41
|
|
|
|
#define HMC_WAKE 0x57
|
|
|
|
#define HMC_SLEEP 0x53
|
|
|
|
#define HMC_SAVE_OP_MODE 0x4C
|
|
|
|
#define HMC_CALLIBRATE_ON 0x43
|
|
|
|
#define HMC_CALLIBRATE_OFF 0x45
|
|
|
|
#define HMC_UPDATE_OFFSETS 0x4F
|
|
|
|
#define HMC_WRITE_RAM 0x47
|
|
|
|
#define HMC_READ_RAM 0x67
|
|
|
|
#define HMC_WRITE_EEPROM 0x77
|
|
|
|
#define HMC_READ_EEPROM 0x72
|
2017-09-13 03:18:55 -04:00
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
|
|
|
// ERROR CODES ALL FUNCTIONS
|
2013-09-30 11:03:06 -04:00
|
|
|
//
|
|
|
|
// * twi_writeTo codes (== endTransmission commands)
|
2021-06-07 12:21:42 -04:00
|
|
|
// HMC6532_I2C_OK 0 .. OK
|
|
|
|
// HMC6532_I2C_ERROR_BUFFEROVERFLOW -1 .. length to long for buffer
|
|
|
|
// HMC6532_I2C_ERROR_ADDR_NACK -2 .. address send, NACK received
|
|
|
|
// HMC6532_I2C_ERROR_DATA_NACK -3 .. data send, NACK received
|
|
|
|
// HMC6532_I2C_ERROR_OTHER -4 ..
|
|
|
|
// other twi error (lost bus arbitration, bus error, ..)
|
2013-09-30 11:03:06 -04:00
|
|
|
//
|
2017-09-13 02:58:18 -04:00
|
|
|
// * requestFrom
|
2021-06-07 12:21:42 -04:00
|
|
|
// HMC6352_I2C_ERROR_REQ_FROM -10 .. not enough values returned
|
2013-09-30 11:03:06 -04:00
|
|
|
//
|
|
|
|
// * function calls
|
2021-06-07 12:21:42 -04:00
|
|
|
// HMC6532_OK 0
|
|
|
|
// HMC6352_ERROR_PARAM1 -20
|
|
|
|
// HMC6352_ERROR_PARAM2 -21
|
2013-09-30 11:03:06 -04:00
|
|
|
//
|
2013-09-30 11:00:55 -04:00
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
|
|
|
hmc6352::hmc6352(uint8_t address, TwoWire *wire)
|
2013-09-30 11:00:55 -04:00
|
|
|
{
|
2021-06-07 12:21:42 -04:00
|
|
|
_address = constrain(address, 0x10, 0xF6);
|
|
|
|
_wire = wire;
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2020-11-27 05:16:22 -05:00
|
|
|
#if defined (ESP8266) || defined(ESP32)
|
2021-06-07 12:21:42 -04:00
|
|
|
bool hmc6352::begin(uint8_t sda, uint8_t scl)
|
2020-11-27 05:16:22 -05:00
|
|
|
{
|
2021-06-07 12:21:42 -04:00
|
|
|
_wire->begin(sda, scl);
|
|
|
|
if (! isConnected())
|
|
|
|
{
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
return true;
|
2020-11-27 05:16:22 -05:00
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
|
|
|
bool hmc6352::begin()
|
|
|
|
{
|
|
|
|
_wire->begin();
|
|
|
|
if (! isConnected())
|
|
|
|
{
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
bool hmc6352::isConnected()
|
2020-11-27 05:16:22 -05:00
|
|
|
{
|
2021-06-07 12:21:42 -04:00
|
|
|
_wire->beginTransmission(_address);
|
|
|
|
return (_wire->endTransmission() == 0);
|
2020-11-27 05:16:22 -05:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:04:25 -04:00
|
|
|
int hmc6352::getHeading()
|
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
int rv = askHeading();
|
|
|
|
if (rv != 0) return rv;
|
|
|
|
return readHeading();
|
2013-09-30 11:04:25 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:03:06 -04:00
|
|
|
// Ask the device to make a new reading
|
|
|
|
int hmc6352::askHeading()
|
2013-09-30 11:00:55 -04:00
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
int rv = cmd(HMC_GET_DATA);
|
|
|
|
if (rv != 0) return -rv; // problem with handshake
|
2021-06-07 12:21:42 -04:00
|
|
|
yield();
|
2017-09-13 02:58:18 -04:00
|
|
|
delay(6); // see datasheet, p8
|
|
|
|
return rv;
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2020-11-27 05:16:22 -05:00
|
|
|
// read the last value from the sensor
|
2013-09-30 11:03:06 -04:00
|
|
|
int hmc6352::readHeading()
|
2013-09-30 11:00:55 -04:00
|
|
|
{
|
2021-06-07 12:21:42 -04:00
|
|
|
int rv = _wire->requestFrom(_address, (uint8_t)2); // remove ambiguity
|
|
|
|
if (rv != 2) return HMC6352_I2C_ERROR_REQ_FROM;
|
|
|
|
rv = _wire->read() * 256; // MSB
|
|
|
|
rv += _wire->read(); // LSB
|
2017-09-13 02:58:18 -04:00
|
|
|
return rv;
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:03:06 -04:00
|
|
|
// wake up from energy saving modus
|
2013-09-30 11:00:55 -04:00
|
|
|
int hmc6352::wakeUp()
|
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
int rv = cmd(HMC_WAKE);
|
2021-06-07 12:21:42 -04:00
|
|
|
yield();
|
2017-09-13 02:58:18 -04:00
|
|
|
delayMicroseconds(100);
|
|
|
|
return rv;
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:03:06 -04:00
|
|
|
// go into energy saving modus
|
2013-09-30 11:00:55 -04:00
|
|
|
int hmc6352::sleep()
|
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
int rv = cmd(HMC_SLEEP);
|
2021-06-07 12:21:42 -04:00
|
|
|
yield();
|
2017-09-13 02:58:18 -04:00
|
|
|
delayMicroseconds(10);
|
|
|
|
return rv;
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:00:55 -04:00
|
|
|
// values obtained from dump
|
|
|
|
int hmc6352::factoryReset()
|
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
writeRAM(0x74, 0x50); // is needed !!
|
|
|
|
writeCmd(HMC_WRITE_EEPROM, 0, 66);
|
|
|
|
writeCmd(HMC_WRITE_EEPROM, 1, 0);
|
|
|
|
writeCmd(HMC_WRITE_EEPROM, 2, 0);
|
|
|
|
writeCmd(HMC_WRITE_EEPROM, 3, 0);
|
|
|
|
writeCmd(HMC_WRITE_EEPROM, 4, 0);
|
|
|
|
writeCmd(HMC_WRITE_EEPROM, 5, 1);
|
|
|
|
writeCmd(HMC_WRITE_EEPROM, 6, 4);
|
|
|
|
writeCmd(HMC_WRITE_EEPROM, 7, 6);
|
|
|
|
writeCmd(HMC_WRITE_EEPROM, 8, 0x50);
|
|
|
|
cmd(HMC_SAVE_OP_MODE);
|
2021-06-07 12:21:42 -04:00
|
|
|
yield();
|
2017-09-13 02:58:18 -04:00
|
|
|
delayMicroseconds(125);
|
2021-06-07 12:21:42 -04:00
|
|
|
return HMC6532_OK;
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:00:55 -04:00
|
|
|
// HANDLE WITH CARE - RESTART NECESSARY
|
2021-06-07 12:21:42 -04:00
|
|
|
// mode = 0, 1, 2
|
|
|
|
// frequemcy = 1, 5, 10, 20 Hz.
|
|
|
|
// periodicReset =
|
|
|
|
// Returns Operational Mode Control Byte
|
|
|
|
int hmc6352::setOperationalModus(hmcMode mode, uint8_t frequency, bool periodicReset)
|
2013-09-30 11:00:55 -04:00
|
|
|
{
|
2021-06-07 12:21:42 -04:00
|
|
|
// Operational Mode Control Byte
|
|
|
|
// bit 2,3,7 are allways 0
|
|
|
|
byte omcb = 0;
|
|
|
|
switch(frequency)
|
2017-09-13 02:58:18 -04:00
|
|
|
{
|
2020-11-27 05:16:22 -05:00
|
|
|
case 1: break;
|
|
|
|
case 5: omcb |= 0x20; break;
|
|
|
|
case 10: omcb |= 0x40; break;
|
|
|
|
case 20: omcb |= 0x60; break;
|
2021-06-07 12:21:42 -04:00
|
|
|
default: return HMC6352_ERROR_PARAM2;
|
2017-09-13 02:58:18 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
if (periodicReset) omcb |= 0x10;
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
switch(mode)
|
2017-09-13 02:58:18 -04:00
|
|
|
{
|
2020-11-27 05:16:22 -05:00
|
|
|
case STANDBY: omcb |= 0x00; break;
|
|
|
|
case QUERY: omcb |= 0x01; break;
|
|
|
|
case CONT: omcb |= 0x02; break;
|
2021-06-07 12:21:42 -04:00
|
|
|
default: return HMC6352_ERROR_PARAM1;
|
2017-09-13 02:58:18 -04:00
|
|
|
}
|
|
|
|
|
2020-11-27 05:16:22 -05:00
|
|
|
saveOpMode(omcb);
|
2017-09-13 02:58:18 -04:00
|
|
|
return omcb;
|
|
|
|
}
|
2013-09-30 11:00:55 -04:00
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:03:06 -04:00
|
|
|
// read the Operational Modus as byte from EEPROM
|
|
|
|
// TODO: split into 3 items
|
|
|
|
//
|
2013-09-30 11:00:55 -04:00
|
|
|
int hmc6352::getOperationalModus()
|
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
// datasheet state that at startup the OM is copied from EEPROM
|
|
|
|
// and that after writing to RAM a reboot is needed to enable new settings
|
|
|
|
// my interpretation ==> EEPROM is leading
|
2021-06-07 12:21:42 -04:00
|
|
|
|
|
|
|
int operationalMode = readCmd(HMC_READ_RAM, 0x74);
|
|
|
|
// int operationalMode = readCmd(HMC_READ_EEPROM, 0x08);
|
|
|
|
return operationalMode;
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:03:06 -04:00
|
|
|
// Switch between normal heading and raw modes
|
|
|
|
// default = 0 ==> normal headings
|
|
|
|
// Note: after a reboot the output modus will be 0 again.
|
2021-06-07 12:21:42 -04:00
|
|
|
// as it is only stored in RAM
|
|
|
|
// 0 = HEADING
|
|
|
|
int hmc6352::setOutputModus(uint8_t outputModus)
|
2013-09-30 11:00:55 -04:00
|
|
|
{
|
2021-06-07 12:21:42 -04:00
|
|
|
if (outputModus > 4) // 4 = MAGY
|
|
|
|
{
|
|
|
|
return HMC6352_ERROR_PARAM1;
|
|
|
|
}
|
|
|
|
return writeCmd(HMC_WRITE_RAM, 0x4E, outputModus);
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:03:06 -04:00
|
|
|
// Read the output modus from RAM
|
2013-09-30 11:00:55 -04:00
|
|
|
int hmc6352::getOutputModus()
|
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
return readCmd(HMC_READ_RAM, 0x4E);
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:03:06 -04:00
|
|
|
// NOT TESTED
|
|
|
|
int hmc6352::callibrationOn()
|
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
int rv = cmd(HMC_CALLIBRATE_ON);
|
2021-06-07 12:21:42 -04:00
|
|
|
yield();
|
2017-09-13 02:58:18 -04:00
|
|
|
delayMicroseconds(10);
|
|
|
|
return rv;
|
2013-09-30 11:03:06 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:03:06 -04:00
|
|
|
// NOT TESTED
|
|
|
|
int hmc6352::callibrationOff()
|
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
int rv = cmd(HMC_CALLIBRATE_OFF);
|
2021-06-07 12:21:42 -04:00
|
|
|
yield();
|
2017-09-13 02:58:18 -04:00
|
|
|
delay(15);
|
|
|
|
return rv;
|
2013-09-30 11:03:06 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:03:06 -04:00
|
|
|
// NOT TESTED
|
|
|
|
int hmc6352::setI2CAddress(uint8_t address)
|
2013-09-30 11:00:55 -04:00
|
|
|
{
|
2021-06-07 12:21:42 -04:00
|
|
|
if ((address < 0x10) || (address > 0xF6) )
|
|
|
|
{
|
|
|
|
return HMC6352_ERROR_PARAM1;
|
|
|
|
}
|
2017-09-13 02:58:18 -04:00
|
|
|
return writeCmd(HMC_WRITE_EEPROM, 0, address);
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
|
|
|
// returns I2C address from EEPROM
|
2013-09-30 11:03:06 -04:00
|
|
|
int hmc6352::getI2CAddress()
|
2013-09-30 11:00:55 -04:00
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
return readCmd(HMC_READ_EEPROM, 0);
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:03:06 -04:00
|
|
|
// NOT TESTED
|
2021-06-07 12:21:42 -04:00
|
|
|
int hmc6352::setTimeDelay(uint8_t milliSeconds)
|
2013-09-30 11:00:55 -04:00
|
|
|
{
|
2021-06-07 12:21:42 -04:00
|
|
|
return writeCmd(HMC_WRITE_EEPROM, 5, milliSeconds);
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:00:55 -04:00
|
|
|
int hmc6352::getTimeDelay()
|
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
return readCmd(HMC_READ_EEPROM, 5);
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:03:06 -04:00
|
|
|
// NOT TESTED
|
2021-06-07 12:21:42 -04:00
|
|
|
// nosm = NumberOfSummedMeasurements
|
|
|
|
int hmc6352::setMeasurementSumming(uint8_t nosm)
|
2013-09-30 11:00:55 -04:00
|
|
|
{
|
2021-06-07 12:21:42 -04:00
|
|
|
uint8_t _nosm = nosm;
|
|
|
|
if (_nosm < 1) _nosm = 1;
|
|
|
|
else if (_nosm > 16 ) _nosm = 16;
|
|
|
|
return writeCmd(HMC_WRITE_EEPROM, 6, _nosm);
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:00:55 -04:00
|
|
|
int hmc6352::getMeasurementSumming()
|
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
return readCmd(HMC_READ_EEPROM, 6);
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
|
|
|
// NOT TESTED
|
|
|
|
int hmc6352::getSWVersionNumber()
|
|
|
|
{
|
|
|
|
return readCmd(HMC_READ_EEPROM, 7);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2020-11-27 05:16:22 -05:00
|
|
|
// used by setOperationalModus()
|
|
|
|
int hmc6352::saveOpMode(byte OpMode)
|
2013-09-30 11:00:55 -04:00
|
|
|
{
|
2020-11-27 05:16:22 -05:00
|
|
|
writeCmd(HMC_WRITE_RAM, 0x74, OpMode);
|
2017-09-13 02:58:18 -04:00
|
|
|
int rv = cmd(HMC_SAVE_OP_MODE);
|
2021-06-07 12:21:42 -04:00
|
|
|
yield();
|
2017-09-13 02:58:18 -04:00
|
|
|
delayMicroseconds(125);
|
|
|
|
return rv;
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2013-09-30 11:03:06 -04:00
|
|
|
// NOT TESTED
|
|
|
|
// meaning UpdateOffsets unknown
|
|
|
|
// therefore removed from lib for now
|
|
|
|
int hmc6352::updateOffsets()
|
2013-09-30 11:00:55 -04:00
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
int rv = cmd(HMC_UPDATE_OFFSETS);
|
2021-06-07 12:21:42 -04:00
|
|
|
yield();
|
2017-09-13 02:58:18 -04:00
|
|
|
delay(6);
|
|
|
|
return rv;
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:03:06 -04:00
|
|
|
// idem
|
|
|
|
// use at own risk ...
|
2013-09-30 11:00:55 -04:00
|
|
|
int hmc6352::writeEEPROM(uint8_t address, uint8_t data)
|
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
return writeCmd(HMC_WRITE_EEPROM, address, data);
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:03:06 -04:00
|
|
|
// idem
|
2013-09-30 11:00:55 -04:00
|
|
|
int hmc6352::readEEPROM(uint8_t address)
|
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
return readCmd(HMC_READ_EEPROM, address);
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2013-09-30 11:03:06 -04:00
|
|
|
|
|
|
|
// idem
|
|
|
|
// Most RAM locations have an unknown meaning
|
|
|
|
// use at own risk ...
|
2013-09-30 11:00:55 -04:00
|
|
|
int hmc6352::writeRAM(uint8_t address, uint8_t data)
|
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
return writeCmd(HMC_WRITE_RAM, address, data);
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
2021-06-07 12:21:42 -04:00
|
|
|
|
|
|
|
|
2013-09-30 11:03:06 -04:00
|
|
|
// idem
|
2013-09-30 11:00:55 -04:00
|
|
|
int hmc6352::readRAM(uint8_t address)
|
|
|
|
{
|
2017-09-13 02:58:18 -04:00
|
|
|
return readCmd(HMC_READ_RAM, address);
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
|
|
|
///////////////////////////////////////////////////////////
|
|
|
|
//
|
|
|
|
// PRIVATE FUNCTIONS
|
|
|
|
//
|
2013-09-30 11:00:55 -04:00
|
|
|
int hmc6352::cmd(uint8_t c)
|
|
|
|
{
|
2021-06-07 12:21:42 -04:00
|
|
|
_wire->beginTransmission(_address);
|
|
|
|
_wire->write(c);
|
|
|
|
int rv = _wire->endTransmission();
|
|
|
|
yield();
|
2017-09-13 02:58:18 -04:00
|
|
|
delay(10);
|
|
|
|
return rv;
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:00:55 -04:00
|
|
|
int hmc6352::readCmd(uint8_t c, uint8_t address)
|
|
|
|
{
|
2021-06-07 12:21:42 -04:00
|
|
|
_wire->beginTransmission(_address);
|
|
|
|
_wire->write(c);
|
|
|
|
_wire->write(address);
|
|
|
|
int rv = _wire->endTransmission();
|
2017-09-13 02:58:18 -04:00
|
|
|
if (rv != 0) return -rv;
|
2021-06-07 12:21:42 -04:00
|
|
|
yield();
|
2017-09-13 02:58:18 -04:00
|
|
|
delayMicroseconds(70);
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
rv = _wire->requestFrom(_address, (uint8_t)1);
|
|
|
|
if (rv != 1) return HMC6352_I2C_ERROR_REQ_FROM;
|
|
|
|
rv = _wire->read();
|
2017-09-13 02:58:18 -04:00
|
|
|
return rv;
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
|
|
|
|
2021-06-07 12:21:42 -04:00
|
|
|
|
2013-09-30 11:00:55 -04:00
|
|
|
int hmc6352::writeCmd(uint8_t c, uint8_t address, uint8_t data)
|
|
|
|
{
|
2021-06-07 12:21:42 -04:00
|
|
|
_wire->beginTransmission(_address);
|
|
|
|
_wire->write(c);
|
|
|
|
_wire->write(address);
|
|
|
|
_wire->write(data);
|
|
|
|
int rv = _wire->endTransmission();
|
|
|
|
yield();
|
2017-09-13 02:58:18 -04:00
|
|
|
delayMicroseconds(70);
|
|
|
|
return rv;
|
2013-09-30 11:00:55 -04:00
|
|
|
}
|
2021-06-07 12:21:42 -04:00
|
|
|
|
|
|
|
|
|
|
|
// -- END OF FILE --
|
|
|
|
|