Merge branch 'master' of git.osmocom.org:osmo-sdr
This commit is contained in:
commit
0b739924a4
|
@ -1,41 +1,60 @@
|
|||
#ifndef __SI570_H__
|
||||
#define __SI570_H__
|
||||
|
||||
#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__
|
||||
#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__
|
||||
|
|
|
@ -1,6 +1,24 @@
|
|||
#ifndef _E4K_TUNER_H
|
||||
#define _E4K_TUNER_H
|
||||
|
||||
/* (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/>.
|
||||
*/
|
||||
|
||||
enum e4k_reg {
|
||||
E4K_REG_MASTER1 = 0x00,
|
||||
E4K_REG_MASTER2 = 0x01,
|
||||
|
|
|
@ -1,3 +1,22 @@
|
|||
|
||||
/* (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>
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
|
@ -16,4 +35,5 @@ void logp2(int subsys, unsigned int level, char *file,
|
|||
va_start(ap, format);
|
||||
vfprintf(stderr, format, ap);
|
||||
va_end(ap);
|
||||
fputc("\r", stderr);
|
||||
}
|
||||
|
|
|
@ -1,4 +1,22 @@
|
|||
|
||||
/* (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 <pio/pio.h>
|
||||
|
||||
static const Pin fon_pin = PIN_FON;
|
||||
|
|
|
@ -1,279 +1,297 @@
|
|||
#include <time.h>
|
||||
#include <math.h>
|
||||
#include <stdio.h>
|
||||
#include <errno.h>
|
||||
|
||||
#include <si570.h>
|
||||
#include <logging.h>
|
||||
#include <utility/trace.h>
|
||||
|
||||
#include <twi/twid.h>
|
||||
|
||||
static void udelay(uint32_t usec)
|
||||
{
|
||||
uint32_t i, j;
|
||||
volatile uint32_t k;
|
||||
|
||||
for (i = 0; i < usec; i++) {
|
||||
for (j = 0; j < 0xff; j++) {
|
||||
k = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static int smbus8_read_bytes(void *i2c, uint8_t addr, uint8_t reg_nr,
|
||||
uint8_t *out, uint8_t num)
|
||||
{
|
||||
unsigned char rc;
|
||||
|
||||
rc = TWID_Read(i2c, addr, reg_nr, 1, out, num, NULL);
|
||||
if (rc != 0) {
|
||||
LOGP(DVCO, LOGL_ERROR, "Error %u in TWID_Read\n", rc);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int smbus8_read_byte(void *i2c, uint8_t addr, uint8_t reg_nr,
|
||||
uint8_t *val)
|
||||
{
|
||||
return smbus8_read_bytes(i2c, addr, reg_nr, val, 1);
|
||||
}
|
||||
|
||||
static int smbus8_write_bytes(void *i2c, uint8_t addr, uint8_t reg_nr,
|
||||
uint8_t *val, uint8_t num)
|
||||
{
|
||||
unsigned char rc;
|
||||
|
||||
rc = TWID_Write(i2c, addr, reg_nr, 1, val, num, NULL);
|
||||
if (rc != 0) {
|
||||
LOGP(DVCO, LOGL_ERROR, "Error %u in TWID_Write\n", rc);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int smbus8_write_byte(void *i2c, uint8_t addr, uint8_t reg_nr,
|
||||
uint8_t val)
|
||||
{
|
||||
return smbus8_write_bytes(i2c, addr, reg_nr, &val, 1);
|
||||
}
|
||||
|
||||
static const struct si570_info si570_data[2] = {
|
||||
{.freq_range = {{.min=10000, .max=945000}, {.min=970000, .max=1134000}, {.min=1213000, .max=1417500}}, .init_freq=856000 },
|
||||
{.freq_range = {{.min=10000, .max=280000}}, .init_freq=100000 },
|
||||
};
|
||||
|
||||
|
||||
//init module
|
||||
int si570_init(struct si570_ctx *ctx, void *i2c_dev, uint8_t i2c_addr)
|
||||
{
|
||||
ctx->i2c = i2c_dev;
|
||||
ctx->slave_addr = i2c_addr;
|
||||
|
||||
TRACE_DEBUG("si570_init()\r\n");
|
||||
|
||||
if (0 != si570_reset(ctx)) {
|
||||
TRACE_DEBUG("SI570 reset failed.\n");
|
||||
return -EIO;
|
||||
}
|
||||
TRACE_DEBUG("si570_init():2\r\n");
|
||||
|
||||
if (0 != si570_read_calibration(ctx)) {
|
||||
TRACE_DEBUG("SI570 init failed.\n");
|
||||
return -EIO;
|
||||
}
|
||||
TRACE_DEBUG("si570_init():3\r\n");
|
||||
|
||||
ctx->init = 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void si570_print_info(struct si570_ctx *ctx)
|
||||
{
|
||||
TRACE_DEBUG("SI570 XTAL: %u Hz REF: %u Hz\n", ctx->xtal >> 3, ctx->info->init_freq * 1000);
|
||||
}
|
||||
|
||||
static int hs_to_div(int n1)
|
||||
{
|
||||
switch (n1) {
|
||||
case 0: return 4;
|
||||
case 1: return 5;
|
||||
case 2: return 6;
|
||||
case 3: return 7;
|
||||
case 5: return 9;
|
||||
case 7: return 11;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int si570_reset(struct si570_ctx *ctx)
|
||||
{
|
||||
TRACE_DEBUG("si570_reset:1\r\n");
|
||||
smbus8_write_byte(ctx->i2c, ctx->slave_addr, 135, 80);
|
||||
udelay(1000);
|
||||
TRACE_DEBUG("si570_reset:2\r\n");
|
||||
smbus8_write_byte(ctx->i2c, ctx->slave_addr, 135, 01);
|
||||
udelay(1000);
|
||||
TRACE_DEBUG("si570_reset:3\r\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int si570_read_calibration(struct si570_ctx *ctx)
|
||||
{
|
||||
int n;
|
||||
int res;
|
||||
uint8_t data[6];
|
||||
uint64_t xd, xf;
|
||||
int n1, hs_div;
|
||||
|
||||
TRACE_DEBUG("si570_read_calib:1\r\n");
|
||||
if (0 != (res = smbus8_read_bytes(ctx->i2c, ctx->slave_addr, 7, data, 6))) {
|
||||
TRACE_DEBUG ("SI570 calibration read error (%i)\n", res);
|
||||
return -EINVAL;
|
||||
}
|
||||
TRACE_DEBUG("si570_read_calib:2\r\n");
|
||||
|
||||
xd = data[1] & 0x3F;
|
||||
|
||||
xd <<= 8;
|
||||
xd |= data[2];
|
||||
|
||||
xd <<= 8;
|
||||
xd |= data[3];
|
||||
|
||||
xd <<= 8;
|
||||
xd |= data[4];
|
||||
|
||||
xd <<= 8;
|
||||
xd |= data[5];
|
||||
|
||||
TRACE_DEBUG("si570_read_calib:2b\r\n");
|
||||
n1 = ((data[0] << 2) & 0x1F) | (data[1] >> 6);
|
||||
hs_div = (data[0] >> 5);
|
||||
|
||||
TRACE_DEBUG("si570_read_calib:2c\r\n");
|
||||
n = 1; if (xd > 0) {
|
||||
//for (n=0; n<2; n++) {
|
||||
|
||||
TRACE_DEBUG("si570_read_calib:2d\r\n");
|
||||
xf = si570_data[n].init_freq * 1000;
|
||||
TRACE_DEBUG("si570_read_calib:2e\r\n");
|
||||
xf *= hs_to_div(hs_div) * (n1+1);
|
||||
TRACE_DEBUG("si570_read_calib:2f\r\n");
|
||||
xf<<=31;
|
||||
TRACE_DEBUG("si570_read_calib:2g\r\n");
|
||||
|
||||
ctx->xtal = (xf + (xd/2)) / xd;
|
||||
|
||||
TRACE_DEBUG("si570_read_calib:2h\r\n");
|
||||
|
||||
ctx->info = &si570_data[n];
|
||||
|
||||
TRACE_DEBUG("si570_read_calib:3\r\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
//set frequency
|
||||
int si570_set_freq(struct si570_ctx *ctx, uint32_t freq, int trim)
|
||||
{
|
||||
uint32_t dco_min = 4850000ULL;
|
||||
int mul, hsv, n1;
|
||||
int freq_in_range = 0;
|
||||
|
||||
ctx->lock = 0;
|
||||
|
||||
for (mul = (dco_min / freq) + 1; (freq * mul) <= 5670000; mul++) {
|
||||
for (hsv=7; hsv>=0; hsv--) {
|
||||
int hsdiv = hs_to_div(hsv);
|
||||
|
||||
if (!hsdiv) continue;
|
||||
if (mul%hsdiv) continue;
|
||||
|
||||
n1 = mul / hsdiv;
|
||||
|
||||
if (n1 > 128) continue;
|
||||
|
||||
if (n1 != 1) {
|
||||
if (n1 < 1) continue;
|
||||
if (n1 % 2) continue;
|
||||
}
|
||||
|
||||
goto found_solution;
|
||||
}
|
||||
}
|
||||
|
||||
TRACE_DEBUG("SI570 no solution\n");
|
||||
|
||||
return -EINVAL;
|
||||
|
||||
found_solution:
|
||||
|
||||
{
|
||||
uint8_t data[6];
|
||||
uint64_t xf, xd, xr;
|
||||
uint32_t n1v;
|
||||
|
||||
xf = freq;
|
||||
xf*= 1000;
|
||||
xf+= trim;
|
||||
|
||||
xd = hs_to_div(hsv) * n1 * xf;
|
||||
xd<<=31;
|
||||
|
||||
xr = (xd + ctx->xtal/2) / ctx->xtal;
|
||||
|
||||
n1v= n1 - 1;
|
||||
|
||||
data[0] = (hsv << 5) | (n1v>> 2);
|
||||
data[1] = (n1v << 6) | (xr >> 32);
|
||||
data[2] = (xr >> 24);
|
||||
data[3] = (xr >> 16);
|
||||
data[4] = (xr >> 8);
|
||||
data[5] = (xr >> 0);
|
||||
|
||||
smbus8_write_byte(ctx->i2c, ctx->slave_addr, 137, 0x10);
|
||||
|
||||
smbus8_write_bytes(ctx->i2c,ctx->slave_addr, 7, data, 6);
|
||||
|
||||
smbus8_write_byte(ctx->i2c, ctx->slave_addr, 137, 0x00);
|
||||
smbus8_write_byte(ctx->i2c, ctx->slave_addr, 135, 0x40);
|
||||
|
||||
ctx->lock = 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
int si570_get_lock(struct si570_ctx *ctx)
|
||||
{
|
||||
return ctx->init && ctx->lock;
|
||||
}
|
||||
|
||||
//dump all registers
|
||||
void si570_regdump(struct si570_ctx *ctx)
|
||||
{
|
||||
uint8_t data[8];
|
||||
|
||||
if (!ctx->init) {
|
||||
TRACE_DEBUG("SI570 not initialized\n");
|
||||
return;
|
||||
}
|
||||
|
||||
smbus8_read_bytes(ctx->i2c, ctx->slave_addr, 7, data, 6);
|
||||
smbus8_read_byte(ctx->i2c, ctx->slave_addr, 135, &data[6]);
|
||||
smbus8_read_byte(ctx->i2c, ctx->slave_addr, 137, &data[7]);
|
||||
|
||||
TRACE_DEBUG("SI570 regs: %02X %02X %02X %02X %02X %02X %02X %02X\n",
|
||||
data[0], data[1], data[2], data[3],
|
||||
data[4], data[5], data[6], data[7]);
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* (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 <time.h>
|
||||
#include <math.h>
|
||||
#include <stdio.h>
|
||||
#include <errno.h>
|
||||
|
||||
#include <si570.h>
|
||||
#include <logging.h>
|
||||
#include <utility/trace.h>
|
||||
|
||||
#include <twi/twid.h>
|
||||
|
||||
static void udelay(uint32_t usec)
|
||||
{
|
||||
uint32_t i, j;
|
||||
volatile uint32_t k;
|
||||
|
||||
for (i = 0; i < usec; i++) {
|
||||
for (j = 0; j < 0xff; j++) {
|
||||
k = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static int smbus8_read_bytes(void *i2c, uint8_t addr, uint8_t reg_nr,
|
||||
uint8_t *out, uint8_t num)
|
||||
{
|
||||
unsigned char rc;
|
||||
|
||||
rc = TWID_Read(i2c, addr, reg_nr, 1, out, num, NULL);
|
||||
if (rc != 0) {
|
||||
LOGP(DVCO, LOGL_ERROR, "Error %u in TWID_Read\n", rc);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int smbus8_read_byte(void *i2c, uint8_t addr, uint8_t reg_nr,
|
||||
uint8_t *val)
|
||||
{
|
||||
return smbus8_read_bytes(i2c, addr, reg_nr, val, 1);
|
||||
}
|
||||
|
||||
static int smbus8_write_bytes(void *i2c, uint8_t addr, uint8_t reg_nr,
|
||||
uint8_t *val, uint8_t num)
|
||||
{
|
||||
unsigned char rc;
|
||||
|
||||
rc = TWID_Write(i2c, addr, reg_nr, 1, val, num, NULL);
|
||||
if (rc != 0) {
|
||||
LOGP(DVCO, LOGL_ERROR, "Error %u in TWID_Write\n", rc);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int smbus8_write_byte(void *i2c, uint8_t addr, uint8_t reg_nr,
|
||||
uint8_t val)
|
||||
{
|
||||
return smbus8_write_bytes(i2c, addr, reg_nr, &val, 1);
|
||||
}
|
||||
|
||||
static const struct si570_info si570_data[2] = {
|
||||
{.freq_range = {{.min=10000, .max=945000}, {.min=970000, .max=1134000}, {.min=1213000, .max=1417500}}, .init_freq=856000 },
|
||||
{.freq_range = {{.min=10000, .max=280000}}, .init_freq=100000 },
|
||||
};
|
||||
|
||||
|
||||
//init module
|
||||
int si570_init(struct si570_ctx *ctx, void *i2c_dev, uint8_t i2c_addr)
|
||||
{
|
||||
ctx->i2c = i2c_dev;
|
||||
ctx->slave_addr = i2c_addr;
|
||||
|
||||
TRACE_DEBUG("si570_init()\r\n");
|
||||
|
||||
if (0 != si570_reset(ctx)) {
|
||||
TRACE_DEBUG("SI570 reset failed.\n");
|
||||
return -EIO;
|
||||
}
|
||||
TRACE_DEBUG("si570_init():2\r\n");
|
||||
|
||||
if (0 != si570_read_calibration(ctx)) {
|
||||
TRACE_DEBUG("SI570 init failed.\n");
|
||||
return -EIO;
|
||||
}
|
||||
TRACE_DEBUG("si570_init():3\r\n");
|
||||
|
||||
ctx->init = 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void si570_print_info(struct si570_ctx *ctx)
|
||||
{
|
||||
TRACE_DEBUG("SI570 XTAL: %u Hz REF: %u Hz\n", ctx->xtal >> 3, ctx->info->init_freq * 1000);
|
||||
}
|
||||
|
||||
static int hs_to_div(int n1)
|
||||
{
|
||||
switch (n1) {
|
||||
case 0: return 4;
|
||||
case 1: return 5;
|
||||
case 2: return 6;
|
||||
case 3: return 7;
|
||||
case 5: return 9;
|
||||
case 7: return 11;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int si570_reset(struct si570_ctx *ctx)
|
||||
{
|
||||
TRACE_DEBUG("si570_reset:1\r\n");
|
||||
smbus8_write_byte(ctx->i2c, ctx->slave_addr, 135, 80);
|
||||
udelay(1000);
|
||||
TRACE_DEBUG("si570_reset:2\r\n");
|
||||
smbus8_write_byte(ctx->i2c, ctx->slave_addr, 135, 01);
|
||||
udelay(1000);
|
||||
TRACE_DEBUG("si570_reset:3\r\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int si570_read_calibration(struct si570_ctx *ctx)
|
||||
{
|
||||
int n;
|
||||
int res;
|
||||
uint8_t data[6];
|
||||
uint64_t xd, xf;
|
||||
int n1, hs_div;
|
||||
|
||||
TRACE_DEBUG("si570_read_calib:1\r\n");
|
||||
if (0 != (res = smbus8_read_bytes(ctx->i2c, ctx->slave_addr, 7, data, 6))) {
|
||||
TRACE_DEBUG ("SI570 calibration read error (%i)\n", res);
|
||||
return -EINVAL;
|
||||
}
|
||||
TRACE_DEBUG("si570_read_calib:2\r\n");
|
||||
|
||||
xd = data[1] & 0x3F;
|
||||
|
||||
xd <<= 8;
|
||||
xd |= data[2];
|
||||
|
||||
xd <<= 8;
|
||||
xd |= data[3];
|
||||
|
||||
xd <<= 8;
|
||||
xd |= data[4];
|
||||
|
||||
xd <<= 8;
|
||||
xd |= data[5];
|
||||
|
||||
TRACE_DEBUG("si570_read_calib:2b\r\n");
|
||||
n1 = ((data[0] << 2) & 0x1F) | (data[1] >> 6);
|
||||
hs_div = (data[0] >> 5);
|
||||
|
||||
TRACE_DEBUG("si570_read_calib:2c\r\n");
|
||||
n = 1; if (xd > 0) {
|
||||
//for (n=0; n<2; n++) {
|
||||
|
||||
TRACE_DEBUG("si570_read_calib:2d\r\n");
|
||||
xf = si570_data[n].init_freq * 1000;
|
||||
TRACE_DEBUG("si570_read_calib:2e\r\n");
|
||||
xf *= hs_to_div(hs_div) * (n1+1);
|
||||
TRACE_DEBUG("si570_read_calib:2f\r\n");
|
||||
xf<<=31;
|
||||
TRACE_DEBUG("si570_read_calib:2g\r\n");
|
||||
|
||||
ctx->xtal = (xf + (xd/2)) / xd;
|
||||
|
||||
TRACE_DEBUG("si570_read_calib:2h\r\n");
|
||||
|
||||
ctx->info = &si570_data[n];
|
||||
|
||||
TRACE_DEBUG("si570_read_calib:3\r\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
//set frequency
|
||||
int si570_set_freq(struct si570_ctx *ctx, uint32_t freq, int trim)
|
||||
{
|
||||
uint32_t dco_min = 4850000ULL;
|
||||
int mul, hsv, n1;
|
||||
int freq_in_range = 0;
|
||||
|
||||
ctx->lock = 0;
|
||||
|
||||
for (mul = (dco_min / freq) + 1; (freq * mul) <= 5670000; mul++) {
|
||||
for (hsv=7; hsv>=0; hsv--) {
|
||||
int hsdiv = hs_to_div(hsv);
|
||||
|
||||
if (!hsdiv) continue;
|
||||
if (mul%hsdiv) continue;
|
||||
|
||||
n1 = mul / hsdiv;
|
||||
|
||||
if (n1 > 128) continue;
|
||||
|
||||
if (n1 != 1) {
|
||||
if (n1 < 1) continue;
|
||||
if (n1 % 2) continue;
|
||||
}
|
||||
|
||||
goto found_solution;
|
||||
}
|
||||
}
|
||||
|
||||
TRACE_DEBUG("SI570 no solution\n");
|
||||
|
||||
return -EINVAL;
|
||||
|
||||
found_solution:
|
||||
|
||||
{
|
||||
uint8_t data[6];
|
||||
uint64_t xf, xd, xr;
|
||||
uint32_t n1v;
|
||||
|
||||
xf = freq;
|
||||
xf*= 1000;
|
||||
xf+= trim;
|
||||
|
||||
xd = hs_to_div(hsv) * n1 * xf;
|
||||
xd<<=31;
|
||||
|
||||
xr = (xd + ctx->xtal/2) / ctx->xtal;
|
||||
|
||||
n1v= n1 - 1;
|
||||
|
||||
data[0] = (hsv << 5) | (n1v>> 2);
|
||||
data[1] = (n1v << 6) | (xr >> 32);
|
||||
data[2] = (xr >> 24);
|
||||
data[3] = (xr >> 16);
|
||||
data[4] = (xr >> 8);
|
||||
data[5] = (xr >> 0);
|
||||
|
||||
smbus8_write_byte(ctx->i2c, ctx->slave_addr, 137, 0x10);
|
||||
|
||||
smbus8_write_bytes(ctx->i2c,ctx->slave_addr, 7, data, 6);
|
||||
|
||||
smbus8_write_byte(ctx->i2c, ctx->slave_addr, 137, 0x00);
|
||||
smbus8_write_byte(ctx->i2c, ctx->slave_addr, 135, 0x40);
|
||||
|
||||
ctx->lock = 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
int si570_get_lock(struct si570_ctx *ctx)
|
||||
{
|
||||
return ctx->init && ctx->lock;
|
||||
}
|
||||
|
||||
//dump all registers
|
||||
void si570_regdump(struct si570_ctx *ctx)
|
||||
{
|
||||
uint8_t data[8];
|
||||
|
||||
if (!ctx->init) {
|
||||
TRACE_DEBUG("SI570 not initialized\n");
|
||||
return;
|
||||
}
|
||||
|
||||
smbus8_read_bytes(ctx->i2c, ctx->slave_addr, 7, data, 6);
|
||||
smbus8_read_byte(ctx->i2c, ctx->slave_addr, 135, &data[6]);
|
||||
smbus8_read_byte(ctx->i2c, ctx->slave_addr, 137, &data[7]);
|
||||
|
||||
TRACE_DEBUG("SI570 regs: %02X %02X %02X %02X %02X %02X %02X %02X\n",
|
||||
data[0], data[1], data[2], data[3],
|
||||
data[4], data[5], data[6], data[7]);
|
||||
}
|
||||
|
|
|
@ -1,4 +1,22 @@
|
|||
|
||||
/* (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 <limits.h>
|
||||
#include <stdint.h>
|
||||
#include <errno.h>
|
||||
|
|
|
@ -1,4 +1,22 @@
|
|||
|
||||
/* (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>
|
||||
#include <unistd.h>
|
||||
#include <errno.h>
|
||||
|
|
Reference in New Issue