/*
* Copyright ( C ) 2016 The Android Open Source Project
*
* Licensed under the Apache License , Version 2 . 0 ( the " License " ) ;
* you may not use this file except in compliance with the License .
* You may obtain a copy of the License at
*
* http : //www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing , software
* distributed under the License is distributed on an " AS IS " BASIS ,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND , either express or implied .
* See the License for the specific language governing permissions and
* limitations under the License .
*/
#ifndef _I2C_H_
#define _I2C_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
typedef void (*I2cCallbackF)(void *cookie, size_t tx, size_t rx, int err);
int i2cMasterRequest(uint32_t busId, uint32_t speedInHz);
int i2cMasterRelease(uint32_t busId);
int i2cMasterTxRx(uint32_t busId, uint32_t addr, const void *txBuf, size_t txSize,
void *rxBuf, size_t rxSize, I2cCallbackF callback, void *cookie);
static inline int i2cMasterTx(uint32_t busId, uint32_t addr,
const void *txBuf, size_t txSize, I2cCallbackF callback, void *cookie)
{
return i2cMasterTxRx(busId, addr, txBuf, txSize, NULL, 0 , callback, cookie);}
static inline int i2cMasterRx(uint32_t busId, uint32_t addr,
void *rxBuf, size_t rxSize, I2cCallbackF callback, void *cookie)
{
return i2cMasterTxRx(busId, addr, NULL, 0 , rxBuf, rxSize, callback, cookie);
}
int i2cSlaveRequest(uint32_t busId, uint32_t addr);
int i2cSlaveRelease(uint32_t busId);
void i2cSlaveEnableRx(uint32_t busId, void *rxBuf, size_t rxSize,
I2cCallbackF callback, void *cookie);
int i2cSlaveTxPreamble(uint32_t busId, uint8_t byte,
I2cCallbackF callback, void *cookie);
int i2cSlaveTxPacket(uint32_t busId, const void *txBuf, size_t txSize,
I2cCallbackF callback, void *cookie);
#ifdef __cplusplus
}
#endif
#endif /* _I2C_H_ */
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