kopia lustrzana https://github.com/kamocat/uSDX
37 wiersze
1.1 KiB
C
37 wiersze
1.1 KiB
C
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/*
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* si5351.h
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*
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* Created on: Jul 8, 2020
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* Author: marshal
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*/
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#ifndef SI5351_H_
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#define SI5351_H_
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#include "hal.h"
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struct synth{
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float carrier; //< in Hz
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int32_t baseband; //< 15.16 fixed-point, in Hz
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struct { //< Calculated values for setting registers
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uint64_t pll:38; //< 11.27 fixed-point for PLL multipler
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uint64_t synth:38; //< 11.27 fixed-point for Synth Divider
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uint8_t divide:2; //< 4-bit field for extra divider settings
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int8_t shift; //< Shift value for scaling the baseband frequency
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}reg;
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uint8_t channel:2; //< Supports four channels - increase bit width if more are desired
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uint8_t PLLx:1; //< 0 is PLLA, 1 is PLLB
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uint8_t phase:7; //< Phase offset, in increments of 1/(vxco*4) seconds
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};
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void synthInit(struct synth * cfg, uint8_t channel, uint8_t pll);
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void synthStart(struct synth * cfg);
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void synthSetCarrier(struct synth * cfg, float carrier);
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void synthSetBaseband(struct synth * cfg, int32_t baseband);
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void synthWriteParam(uint8_t reg, uint64_t val, uint8_t div);
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void synthSetPhase(struct synth * cfg, uint8_t phase);
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void synthStop(struct synth * cfg);
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#endif /* SI5351_H_ */
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