ardupilot/libraries/AP_HAL_FLYMAPLE/I2CDriver.cpp

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/*
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
Flymaple port by Mike McCauley
*/
#include <AP_HAL.h>
#if CONFIG_HAL_BOARD == HAL_BOARD_FLYMAPLE
// Flymaple I2CDriver
#include "I2CDriver.h"
#include "FlymapleWirish.h"
#include <Wire.h>
using namespace AP_HAL_FLYMAPLE_NS;
static TwoWire twowire(5, 9); // Flymaple has non-standard SCL, SDA
void FLYMAPLEI2CDriver::begin()
{
twowire.begin();
}
void FLYMAPLEI2CDriver::end() {}
void FLYMAPLEI2CDriver::setTimeout(uint16_t ms) {}
void FLYMAPLEI2CDriver::setHighSpeed(bool active) {}
uint8_t FLYMAPLEI2CDriver::write(uint8_t addr, uint8_t len, uint8_t* data)
{
twowire.beginTransmission(addr);
twowire.send(data, len);
uint8_t result = twowire.endTransmission();
return result;
}
uint8_t FLYMAPLEI2CDriver::writeRegister(uint8_t addr, uint8_t reg, uint8_t val)
{
return writeRegisters(addr, reg, 1, &val);
}
uint8_t FLYMAPLEI2CDriver::writeRegisters(uint8_t addr, uint8_t reg,
uint8_t len, uint8_t* data)
{
twowire.beginTransmission(addr);
twowire.send(reg);
if (len)
twowire.send(data, len);
uint8_t result = twowire.endTransmission();
return result;
}
uint8_t FLYMAPLEI2CDriver::read(uint8_t addr, uint8_t len, uint8_t* data)
{
uint8_t actual_len = twowire.requestFrom(addr, len);
for (uint8_t i = 0; i < actual_len; i++)
*data++ = twowire.receive();
return actual_len != len;
}
uint8_t FLYMAPLEI2CDriver::readRegister(uint8_t addr, uint8_t reg, uint8_t* data)
{
return readRegisters(addr, reg, 1, data);
}
uint8_t FLYMAPLEI2CDriver::readRegisters(uint8_t addr, uint8_t reg,
uint8_t len, uint8_t* data)
{
writeRegisters(addr, reg, 0, NULL); // Tell device which register we want
return read(addr, len, data);
}
uint8_t FLYMAPLEI2CDriver::lockup_count() {return 0;}
#endif