45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
|
/***************************************************************************
|
||
|
|
* __________ __ ___.
|
||
|
|
* 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);
|
||
|
|
|
||
|
|
/* 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__ */
|