SDR (Software Defined Radio) » OsmoSDR

#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_reinit(struct si570_ctx *ctx);

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);

//write register(s)

int si570_reg_write(struct si570_ctx *ctx, uint8_t reg, int len, const uint8_t* data);

#endif //__SI570_H__