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#ifndef __SI570_H__
#define __SI570_H__
/* (C) 2005-2011 by maintech GmbH
* (C) 2011-2012 by Harald Welte <laforge@gnumonks.org>
*
* All Rights Reserved
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#define SI570_ADDR 0x55
#define SI570_XTAL 114285000L
struct range {
uint32_t min;
uint32_t max;
};
struct si570_info {
struct range freq_range[3];
uint32_t init_freq;
};
//device-context
struct si570_ctx {
int init;
int lock;
void *i2c;
uint8_t slave_addr;
uint32_t xtal;
const struct si570_info *info;
};
//API
int si570_init(struct si570_ctx *ctx, void *i2c_dev, uint8_t i2c_addr);
int si570_read_calibration(struct si570_ctx *ctx);
int si570_reset(struct si570_ctx *ctx);
//mode of operation
int si570_get_lock(struct si570_ctx *ctx);
//frequency
int si570_set_freq(struct si570_ctx *ctx, uint32_t freq, int trim);
//dump all registers
void si570_regdump(struct si570_ctx *ctx);
#endif //__SI570_H__
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