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65ad2caf8a
The info field in the pios_i2c_txn list can now be used to provide a const string which describes the context for this transaction. This is very helpful when diagnosing an error that occurs somewhere in the middle of the I2C FSM since the FSM runs primarily in the ISR where the original context for the transactions is no longer available in the traceback. git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1622 ebee16cc-31ac-478f-84a7-5cbb03baadba
62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
/**
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******************************************************************************
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* @addtogroup PIOS PIOS Core hardware abstraction layer
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* @{
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* @addtogroup PIOS_I2C I2C Functions
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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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#include <stdbool.h>
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/* Global Types */
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enum pios_i2c_txn_direction {
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PIOS_I2C_TXN_READ,
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PIOS_I2C_TXN_WRITE
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};
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struct pios_i2c_txn {
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const char * info;
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uint16_t addr;
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enum pios_i2c_txn_direction rw;
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uint32_t len;
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uint8_t * buf;
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};
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/* Public Functions */
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extern int32_t PIOS_I2C_Init(void);
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extern bool PIOS_I2C_Transfer(uint8_t i2c, const struct pios_i2c_txn txn_list[], uint32_t num_txns);
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extern void PIOS_I2C_EV_IRQ_Handler(uint8_t i2c);
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extern void PIOS_I2C_ER_IRQ_Handler(uint8_t i2c);
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#endif /* PIOS_I2C_H */
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/**
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* @}
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* @}
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*/
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