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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2021 Aidan MacDonald
*
* 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 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef __I2C_X1000_H__
#define __I2C_X1000_H__
#include "i2c-async.h"
#define I2C_FREQ_100K 100000
#define I2C_FREQ_400K 400000
extern void i2c_init(void) INIT_ATTR;
/* Configure the I2C controller prior to use.
*
* - freq: frequency of SCL, should be <= 400 KHz and >= 25 KHz
* - use I2C_FREQ_100K for 100 KHz
* - use I2C_FREQ_400K for 400 Khz
* - use 0 to disable the controller completely
* - frequencies below 25 KHz will violate timing constraints
*
* TODO: move this to the i2c-async API, it's simple enough
*/
extern void i2c_x1000_set_freq(int chn, int freq);
#endif /* __I2C_X1000_H__ */
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