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50215e75c6
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@296 ebee16cc-31ac-478f-84a7-5cbb03baadba
65 lines
2.3 KiB
C
65 lines
2.3 KiB
C
/**
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******************************************************************************
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*
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* @file pios_i2c.h
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* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
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* Parts by Thorsten Klose (tk@midibox.org)
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* @brief I2C functions header.
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* @see The GNU Public License (GPL) Version 3
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*
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*****************************************************************************/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef PIOS_I2C_H
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#define PIOS_I2C_H
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/* Local defines */
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#define I2C_ERROR_INVALID_PORT -1
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#define I2C_ERROR_GENERAL -2
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#define I2C_ERROR_UNSUPPORTED_TRANSFER_TYPE -3
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#define I2C_ERROR_TIMEOUT -4
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#define I2C_ERROR_ARBITRATION_LOST -5
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#define I2C_ERROR_BUS -6
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#define I2C_ERROR_SLAVE_NOT_CONNECTED -7
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#define I2C_ERROR_UNEXPECTED_EVENT -8
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#define I2C_ERROR_RX_BUFFER_OVERRUN -9
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#define I2C_ERROR_BUSY -10
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/* Global Types */
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typedef enum {
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I2C_Blocking,
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I2C_Non_Blocking
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} I2CSemaphoreTypeDef;
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typedef enum {
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I2C_Read,
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I2C_Write,
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I2C_Write_WithoutStop
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} I2CTransferTypeDef;
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/* Public Functions */
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extern int32_t PIOS_I2C_Init(void);
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extern int32_t PIOS_I2C_LockDevice(I2CSemaphoreTypeDef semaphore_type);
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extern int32_t PIOS_I2C_UnlockDevice(void);
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extern int32_t PIOS_I2C_TransferCheck(void);
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extern int32_t PIOS_I2C_TransferWait(void);
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extern int32_t PIOS_I2C_Transfer(I2CTransferTypeDef transfer, uint8_t address, uint8_t *buffer, uint16_t len);
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extern void PIOS_I2C_StartTransfer(I2CTransferTypeDef transfer, uint8_t address, uint8_t *buffer, uint16_t len);
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#endif /* PIOS_I2C_H */
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