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#ifndef CYGONCE_I2C_LPC2XXX_H
#define CYGONCE_I2C_LPC2XXX_H
//==========================================================================
//
// devs/i2c/arm/lpc2xxx/current/src/i2c_lpc2xxx.h
//
// I2C driver for NXP LPC2xxx ARM processors
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 2008 Free Software Foundation, Inc.
//
// eCos 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 2 or (at your option) any later
// version.
//
// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, if other files instantiate templates or use
// macros or inline functions from this file, or you compile this file
// and link it with other works to produce a work based on this file,
// this file does not by itself cause the resulting work to be covered by
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>
// Contributors: Uwe Kindler <uwe_kindler@web.de>
// Date: 2008-09-11
// Description: I2C driver for LPC2xxx
//####DESCRIPTIONEND####
//==========================================================================
//==========================================================================
// INCLUDES
//==========================================================================
#include <pkgconf/devs_i2c_arm_lpc2xxx.h>
#include <cyg/infra/cyg_type.h>
#include <cyg/hal/drv_api.h>
//==========================================================================
// Single I2C bus sepecififc data
//==========================================================================
typedef struct cyg_lpc2xxx_i2c_extra {
#ifdef CYGHWR_DEVS_I2C_ARM_LPC2XXX_MULTIPLE_BUSES
// Put statically initialized fields first.
cyg_uint32 i2c_base; // Per-bus h/w details
cyg_vector_t i2c_isrvec;
int i2c_isrpri;
cyg_uint32 i2c_pclk; // peripheral clock of
cyg_uint32 i2c_bus_freq;// I2C bus frequency (e.g. 100 kHz, 400 kHz)
#endif // CYGHWR_DEVS_I2C_ARM_LPC2XXX_MULTIPLE_BUSES
cyg_uint8 i2c_addr;
cyg_uint32 i2c_count;
const cyg_uint8* i2c_txbuf;
cyg_uint8* i2c_rxbuf;
cyg_bool i2c_rxnak;
cyg_uint32 i2c_flag;
cyg_uint32 i2c_delay;
cyg_drv_mutex_t i2c_lock; // For synchronizing between DSR and foreground
cyg_drv_cond_t i2c_wait;
cyg_handle_t i2c_interrupt_handle;// For initializing the interrupt
cyg_interrupt i2c_interrupt_data;
} cyg_lpc2xxx_i2c_extra;
//==========================================================================
// I2C driver interface
//==========================================================================
externC void cyg_lpc2xxx_i2c_init(struct cyg_i2c_bus*);
externC cyg_uint32 cyg_lpc2xxx_i2c_tx(const cyg_i2c_device*,
cyg_bool, const cyg_uint8*,
cyg_uint32, cyg_bool);
externC cyg_uint32 cyg_lpc2xxx_i2c_rx(const cyg_i2c_device*,
cyg_bool, cyg_uint8*,
cyg_uint32, cyg_bool, cyg_bool);
externC void cyg_lpc2xxx_i2c_stop(const cyg_i2c_device*);
//==========================================================================
// I2C bus declaration macros
//=========================================================================
#ifdef CYGHWR_DEVS_I2C_ARM_LPC2XXX_MULTIPLE_BUSES
# define CYG_LPC2XXX_I2C_BUS(_name_, _init_fn_, _base_, _isr_vec_, _isr_pri_, \
_pclk_, _i2c_bus_freq_) \
static cyg_lpc2xxx_i2c_extra _name_ ## _extra = { \
i2c_base : _base_, \
i2c_isrvec : _isr_vec_, \
i2c_isrpri : _isr_pri_, \
i2c_pclk : _pclk_, \
i2c_bus_freq : _i2c_bus_freq_, \
i2c_count : 0, \
i2c_txbuf : NULL, \
i2c_rxbuf : NULL, \
i2c_flag : 0 \
} ; \
CYG_I2C_BUS(_name_, \
_init_fn_, \
&cyg_lpc2xxx_i2c_tx, \
&cyg_lpc2xxx_i2c_rx, \
&cyg_lpc2xxx_i2c_stop, \
(void*) & ( _name_ ## _extra)) ;
#else // !CYGHWR_DEVS_I2C_ARM_LPC2XXX_MULTIPLE_BUSES
# define CYG_LPC2XXX_I2C_BUS(_name_, _init_fn_, _base_, _isr_vec_, _isr_pri_, \
_pclk_, _i2c_bus_freq_) \
static cyg_lpc2xxx_i2c_extra _name_ ## _extra = { \
i2c_count : 0, \
i2c_txbuf : NULL, \
i2c_rxbuf : NULL, \
i2c_flag : 0 \
} ; \
CYG_I2C_BUS(_name_, \
_init_fn_, \
cyg_lpc2xxx_i2c_tx, \
cyg_lpc2xxx_i2c_rx, \
cyg_lpc2xxx_i2c_stop, \
(void*) & ( _name_ ## _extra)) ;
#endif // CYGHWR_DEVS_I2C_ARM_LPC2XXX_MULTIPLE_BUSES
//-----------------------------------------------------------------------------
#endif // #endif CYGONCE_I2C_LPC2XXX_H
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