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79 lines
2.3 KiB
C
79 lines
2.3 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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* @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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#define PIOS_I2C_DIAGNOSTICS
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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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#define I2C_LOG_DEPTH 20
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enum pios_i2c_error_type {
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PIOS_I2C_ERROR_EVENT,
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PIOS_I2C_ERROR_FSM,
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PIOS_I2C_ERROR_INTERRUPT
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};
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struct pios_i2c_fault_history {
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enum pios_i2c_error_type type;
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uint32_t evirq[I2C_LOG_DEPTH];
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uint32_t erirq[I2C_LOG_DEPTH];
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uint8_t event[I2C_LOG_DEPTH];
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uint8_t state[I2C_LOG_DEPTH];
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};
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/* Public Functions */
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extern int32_t PIOS_I2C_Transfer(uint32_t i2c_id, const struct pios_i2c_txn txn_list[], uint32_t num_txns);
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extern int32_t PIOS_I2C_Transfer_Callback(uint32_t i2c_id, const struct pios_i2c_txn txn_list[], uint32_t num_txns, void *callback);
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extern void PIOS_I2C_EV_IRQ_Handler(uint32_t i2c_id);
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extern void PIOS_I2C_ER_IRQ_Handler(uint32_t i2c_id);
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extern void PIOS_I2C_GetDiagnostics(struct pios_i2c_fault_history *data, uint8_t *error_counts);
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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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