/** ****************************************************************************** * @addtogroup PIOS PIOS Core hardware abstraction layer * @{ * @addtogroup PIOS_I2C I2C Functions * @{ * * @file pios_i2c.h * @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010. * Parts by Thorsten Klose (tk@midibox.org) * @brief I2C functions header. * @see The GNU Public License (GPL) Version 3 * *****************************************************************************/ /* * 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, write to the Free Software Foundation, Inc., * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #ifndef PIOS_I2C_H #define PIOS_I2C_H #define PIOS_I2C_DIAGNOSTICS #include /* Global Types */ enum pios_i2c_txn_direction { PIOS_I2C_TXN_READ, PIOS_I2C_TXN_WRITE }; struct pios_i2c_txn { const char *info; uint16_t addr; enum pios_i2c_txn_direction rw; uint32_t len; uint8_t *buf; }; #define I2C_LOG_DEPTH 20 enum pios_i2c_error_type { PIOS_I2C_ERROR_EVENT, PIOS_I2C_ERROR_FSM, PIOS_I2C_ERROR_INTERRUPT }; struct pios_i2c_fault_history { enum pios_i2c_error_type type; uint32_t evirq[I2C_LOG_DEPTH]; uint32_t erirq[I2C_LOG_DEPTH]; uint8_t event[I2C_LOG_DEPTH]; uint8_t state[I2C_LOG_DEPTH]; }; /* Public Functions */ extern int32_t PIOS_I2C_Transfer(uint32_t i2c_id, const struct pios_i2c_txn txn_list[], uint32_t num_txns); extern int32_t PIOS_I2C_Transfer_Callback(uint32_t i2c_id, const struct pios_i2c_txn txn_list[], uint32_t num_txns, void *callback); extern void PIOS_I2C_EV_IRQ_Handler(uint32_t i2c_id); extern void PIOS_I2C_ER_IRQ_Handler(uint32_t i2c_id); extern void PIOS_I2C_GetDiagnostics(struct pios_i2c_fault_history * data, uint8_t * error_counts); #endif /* PIOS_I2C_H */ /** * @} * @} */