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