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si5351.h
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si5351.h
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/*
* si5351.h - Si5351 library for Arduino
*
* Copyright (C) 2015 - 2016 Jason Milldrum <milldrum@gmail.com>
* Dana H. Myers <k6jq@comcast.net>
*
* Many defines derived from clk-si5351.h in the Linux kernel.
* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
* Rabeeh Khoury <rabeeh@solid-run.com>
*
* do_div() macro derived from /include/asm-generic/div64.h in
* the Linux kernel.
* Copyright (C) 2003 Bernardo Innocenti <bernie@develer.com>
*
* 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/>.
*/
#ifndef SI5351_H_
#define SI5351_H_
#include "Arduino.h"
#include "Wire.h"
#include <stdint.h>
/* Define definitions */
#define SI5351_BUS_BASE_ADDR 0x60
#define SI5351_XTAL_FREQ 25000000
#define SI5351_PLL_FIXED 80000000000ULL
#define SI5351_FREQ_MULT 100ULL
#define SI5351_DEFAULT_CLK 1000000000ULL
#define SI5351_PLL_VCO_MIN 600000000
#define SI5351_PLL_VCO_MAX 900000000
#define SI5351_MULTISYNTH_MIN_FREQ 500000
#define SI5351_MULTISYNTH_DIVBY4_FREQ 150000000
#define SI5351_MULTISYNTH_MAX_FREQ 225000000
#define SI5351_MULTISYNTH_SHARE_MAX 100000000
#define SI5351_MULTISYNTH_SHARE_MIN 1024000
#define SI5351_MULTISYNTH67_MAX_FREQ SI5351_MULTISYNTH_DIVBY4_FREQ
#define SI5351_CLKOUT_MIN_FREQ 4000
#define SI5351_CLKOUT_MAX_FREQ SI5351_MULTISYNTH_MAX_FREQ
#define SI5351_CLKOUT67_MS_MIN SI5351_PLL_VCO_MIN / SI5351_MULTISYNTH67_A_MAX
#define SI5351_CLKOUT67_MIN_FREQ SI5351_CLKOUT67_MS_MIN / 128
#define SI5351_CLKOUT67_MAX_FREQ SI5351_MULTISYNTH67_MAX_FREQ
#define SI5351_PLL_A_MIN 15
#define SI5351_PLL_A_MAX 90
#define SI5351_PLL_B_MAX (SI5351_PLL_C_MAX-1)
#define SI5351_PLL_C_MAX 1048575
#define SI5351_MULTISYNTH_A_MIN 6
#define SI5351_MULTISYNTH_A_MAX 1800
#define SI5351_MULTISYNTH67_A_MAX 254
#define SI5351_MULTISYNTH_B_MAX (SI5351_MULTISYNTH_C_MAX-1)
#define SI5351_MULTISYNTH_C_MAX 1048575
#define SI5351_MULTISYNTH_P1_MAX ((1<<18)-1)
#define SI5351_MULTISYNTH_P2_MAX ((1<<20)-1)
#define SI5351_MULTISYNTH_P3_MAX ((1<<20)-1)
#define SI5351_VCXO_PULL_MIN 30
#define SI5351_VCXO_PULL_MAX 240
#define SI5351_VCXO_MARGIN 103
#define SI5351_DEVICE_STATUS 0
#define SI5351_INTERRUPT_STATUS 1
#define SI5351_INTERRUPT_MASK 2
#define SI5351_STATUS_SYS_INIT (1<<7)
#define SI5351_STATUS_LOL_B (1<<6)
#define SI5351_STATUS_LOL_A (1<<5)
#define SI5351_STATUS_LOS (1<<4)
#define SI5351_OUTPUT_ENABLE_CTRL 3
#define SI5351_OEB_PIN_ENABLE_CTRL 9
#define SI5351_PLL_INPUT_SOURCE 15
#define SI5351_CLKIN_DIV_MASK (3<<6)
#define SI5351_CLKIN_DIV_1 (0<<6)
#define SI5351_CLKIN_DIV_2 (1<<6)
#define SI5351_CLKIN_DIV_4 (2<<6)
#define SI5351_CLKIN_DIV_8 (3<<6)
#define SI5351_PLLB_SOURCE (1<<3)
#define SI5351_PLLA_SOURCE (1<<2)
#define SI5351_CLK0_CTRL 16
#define SI5351_CLK1_CTRL 17
#define SI5351_CLK2_CTRL 18
#define SI5351_CLK3_CTRL 19
#define SI5351_CLK4_CTRL 20
#define SI5351_CLK5_CTRL 21
#define SI5351_CLK6_CTRL 22
#define SI5351_CLK7_CTRL 23
#define SI5351_CLK_POWERDOWN (1<<7)
#define SI5351_CLK_INTEGER_MODE (1<<6)
#define SI5351_CLK_PLL_SELECT (1<<5)
#define SI5351_CLK_INVERT (1<<4)
#define SI5351_CLK_INPUT_MASK (3<<2)
#define SI5351_CLK_INPUT_XTAL (0<<2)
#define SI5351_CLK_INPUT_CLKIN (1<<2)
#define SI5351_CLK_INPUT_MULTISYNTH_0_4 (2<<2)
#define SI5351_CLK_INPUT_MULTISYNTH_N (3<<2)
#define SI5351_CLK_DRIVE_STRENGTH_MASK (3<<0)
#define SI5351_CLK_DRIVE_STRENGTH_2MA (0<<0)
#define SI5351_CLK_DRIVE_STRENGTH_4MA (1<<0)
#define SI5351_CLK_DRIVE_STRENGTH_6MA (2<<0)
#define SI5351_CLK_DRIVE_STRENGTH_8MA (3<<0)
#define SI5351_CLK3_0_DISABLE_STATE 24
#define SI5351_CLK7_4_DISABLE_STATE 25
#define SI5351_CLK_DISABLE_STATE_MASK 3
#define SI5351_CLK_DISABLE_STATE_LOW 0
#define SI5351_CLK_DISABLE_STATE_HIGH 1
#define SI5351_CLK_DISABLE_STATE_FLOAT 2
#define SI5351_CLK_DISABLE_STATE_NEVER 3
#define SI5351_PARAMETERS_LENGTH 8
#define SI5351_PLLA_PARAMETERS 26
#define SI5351_PLLB_PARAMETERS 34
#define SI5351_CLK0_PARAMETERS 42
#define SI5351_CLK1_PARAMETERS 50
#define SI5351_CLK2_PARAMETERS 58
#define SI5351_CLK3_PARAMETERS 66
#define SI5351_CLK4_PARAMETERS 74
#define SI5351_CLK5_PARAMETERS 82
#define SI5351_CLK6_PARAMETERS 90
#define SI5351_CLK7_PARAMETERS 91
#define SI5351_CLK6_7_OUTPUT_DIVIDER 92
#define SI5351_OUTPUT_CLK_DIV_MASK (7 << 4)
#define SI5351_OUTPUT_CLK6_DIV_MASK (7 << 0)
#define SI5351_OUTPUT_CLK_DIV_SHIFT 4
#define SI5351_OUTPUT_CLK_DIV6_SHIFT 0
#define SI5351_OUTPUT_CLK_DIV_1 0
#define SI5351_OUTPUT_CLK_DIV_2 1
#define SI5351_OUTPUT_CLK_DIV_4 2
#define SI5351_OUTPUT_CLK_DIV_8 3
#define SI5351_OUTPUT_CLK_DIV_16 4
#define SI5351_OUTPUT_CLK_DIV_32 5
#define SI5351_OUTPUT_CLK_DIV_64 6
#define SI5351_OUTPUT_CLK_DIV_128 7
#define SI5351_OUTPUT_CLK_DIVBY4 (3<<2)
#define SI5351_SSC_PARAM0 149
#define SI5351_SSC_PARAM1 150
#define SI5351_SSC_PARAM2 151
#define SI5351_SSC_PARAM3 152
#define SI5351_SSC_PARAM4 153
#define SI5351_SSC_PARAM5 154
#define SI5351_SSC_PARAM6 155
#define SI5351_SSC_PARAM7 156
#define SI5351_SSC_PARAM8 157
#define SI5351_SSC_PARAM9 158
#define SI5351_SSC_PARAM10 159
#define SI5351_SSC_PARAM11 160
#define SI5351_SSC_PARAM12 161
#define SI5351_VXCO_PARAMETERS_LOW 162
#define SI5351_VXCO_PARAMETERS_MID 163
#define SI5351_VXCO_PARAMETERS_HIGH 164
#define SI5351_CLK0_PHASE_OFFSET 165
#define SI5351_CLK1_PHASE_OFFSET 166
#define SI5351_CLK2_PHASE_OFFSET 167
#define SI5351_CLK3_PHASE_OFFSET 168
#define SI5351_CLK4_PHASE_OFFSET 169
#define SI5351_CLK5_PHASE_OFFSET 170
#define SI5351_PLL_RESET 177
#define SI5351_PLL_RESET_B (1<<7)
#define SI5351_PLL_RESET_A (1<<5)
#define SI5351_CRYSTAL_LOAD 183
#define SI5351_CRYSTAL_LOAD_MASK (3<<6)
#define SI5351_CRYSTAL_LOAD_0PF (0<<6)
#define SI5351_CRYSTAL_LOAD_6PF (1<<6)
#define SI5351_CRYSTAL_LOAD_8PF (2<<6)
#define SI5351_CRYSTAL_LOAD_10PF (3<<6)
#define SI5351_FANOUT_ENABLE 187
#define SI5351_CLKIN_ENABLE (1<<7)
#define SI5351_XTAL_ENABLE (1<<6)
#define SI5351_MULTISYNTH_ENABLE (1<<4)
/* Macro definitions */
//#define RFRAC_DENOM ((1L << 20) - 1)
#define RFRAC_DENOM 1000000ULL
/*
* Based on former asm-ppc/div64.h and asm-m68knommu/div64.h
*
* The semantics of do_div() are:
*
* uint32_t do_div(uint64_t *n, uint32_t base)
* {
* uint32_t remainder = *n % base;
* *n = *n / base;
* return remainder;
* }
*
* NOTE: macro parameter n is evaluated multiple times,
* beware of side effects!
*/
# define do_div(n,base) ({ \
uint64_t __base = (base); \
uint64_t __rem; \
__rem = ((uint64_t)(n)) % __base; \
(n) = ((uint64_t)(n)) / __base; \
__rem; \
})
/* Enum definitions */
/*
* enum si5351_variant - SiLabs Si5351 chip variant
* @SI5351_VARIANT_A: Si5351A (8 output clocks, XTAL input)
* @SI5351_VARIANT_A3: Si5351A MSOP10 (3 output clocks, XTAL input)
* @SI5351_VARIANT_B: Si5351B (8 output clocks, XTAL/VXCO input)
* @SI5351_VARIANT_C: Si5351C (8 output clocks, XTAL/CLKIN input)
*/
/*
enum si5351_variant {
SI5351_VARIANT_A = 1,
SI5351_VARIANT_A3 = 2,
SI5351_VARIANT_B = 3,
SI5351_VARIANT_C = 4,
};
*/
enum si5351_clock {SI5351_CLK0, SI5351_CLK1, SI5351_CLK2, SI5351_CLK3,
SI5351_CLK4, SI5351_CLK5, SI5351_CLK6, SI5351_CLK7};
enum si5351_pll {SI5351_PLLA, SI5351_PLLB};
enum si5351_drive {SI5351_DRIVE_2MA, SI5351_DRIVE_4MA, SI5351_DRIVE_6MA, SI5351_DRIVE_8MA};
enum si5351_clock_source {SI5351_CLK_SRC_XTAL, SI5351_CLK_SRC_CLKIN, SI5351_CLK_SRC_MS0, SI5351_CLK_SRC_MS};
enum si5351_clock_disable {SI5351_CLK_DISABLE_LOW, SI5351_CLK_DISABLE_HIGH, SI5351_CLK_DISABLE_HI_Z, SI5351_CLK_DISABLE_NEVER};
enum si5351_clock_fanout {SI5351_FANOUT_CLKIN, SI5351_FANOUT_XO, SI5351_FANOUT_MS};
enum si5351_pll_input{SI5351_PLL_INPUT_XO, SI5351_PLL_INPUT_CLKIN};
/* Struct definitions */
struct Si5351RegSet
{
uint32_t p1;
uint32_t p2;
uint32_t p3;
};
struct Si5351Status
{
uint8_t SYS_INIT;
uint8_t LOL_B;
uint8_t LOL_A;
uint8_t LOS;
uint8_t REVID;
};
struct Si5351IntStatus
{
uint8_t SYS_INIT_STKY;
uint8_t LOL_B_STKY;
uint8_t LOL_A_STKY;
uint8_t LOS_STKY;
};
class Si5351
{
public:
Si5351(uint8_t i2c_addr = SI5351_BUS_BASE_ADDR);
void init(uint8_t, uint32_t, int32_t);
void reset(void);
uint8_t set_freq(uint64_t, enum si5351_clock);
uint8_t set_freq_manual(uint64_t, uint64_t, enum si5351_clock);
void set_pll(uint64_t, enum si5351_pll);
void set_ms(enum si5351_clock, struct Si5351RegSet, uint8_t, uint8_t, uint8_t);
void output_enable(enum si5351_clock, uint8_t);
void drive_strength(enum si5351_clock, enum si5351_drive);
void update_status(void);
void set_correction(int32_t);
void set_phase(enum si5351_clock, uint8_t);
int32_t get_correction(void);
void pll_reset(enum si5351_pll);
void set_ms_source(enum si5351_clock, enum si5351_pll);
void set_int(enum si5351_clock, uint8_t);
void set_clock_pwr(enum si5351_clock, uint8_t);
void set_clock_invert(enum si5351_clock, uint8_t);
void set_clock_source(enum si5351_clock, enum si5351_clock_source);
void set_clock_disable(enum si5351_clock, enum si5351_clock_disable);
void set_clock_fanout(enum si5351_clock_fanout, uint8_t);
void set_pll_input(enum si5351_pll, enum si5351_pll_input);
void set_vcxo(uint64_t, uint8_t);
uint8_t si5351_write_bulk(uint8_t, uint8_t, uint8_t *);
uint8_t si5351_write(uint8_t, uint8_t);
uint8_t si5351_read(uint8_t);
struct Si5351Status dev_status;
struct Si5351IntStatus dev_int_status;
enum si5351_pll pll_assignment[8];
bool clk_first_set[8];
uint64_t clk_freq[8];
uint64_t plla_freq;
uint64_t pllb_freq;
uint32_t xtal_freq;
private:
uint64_t pll_calc(uint64_t, struct Si5351RegSet *, int32_t, uint8_t);
uint64_t multisynth_calc(uint64_t, uint64_t, struct Si5351RegSet *);
uint64_t multisynth67_calc(uint64_t, uint64_t, struct Si5351RegSet *);
void update_sys_status(struct Si5351Status *);
void update_int_status(struct Si5351IntStatus *);
void ms_div(enum si5351_clock, uint8_t, uint8_t);
uint8_t select_r_div(uint64_t *);
uint8_t select_r_div_ms67(uint64_t *);
int32_t ref_correction;
uint8_t i2c_bus_addr;
};
#endif /* SI5351_H_ */