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https://github.com/ttrftech/NanoVNA.git
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70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
#define SI5351_PLL_A 0
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#define SI5351_PLL_B 1
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#define SI5351_MULTISYNTH_DIV_4 4
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#define SI5351_MULTISYNTH_DIV_6 6
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#define SI5351_MULTISYNTH_DIV_8 8
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#define SI5351_R_DIV_1 (0<<4)
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#define SI5351_R_DIV_2 (1<<4)
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#define SI5351_R_DIV_4 (2<<4)
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#define SI5351_R_DIV_8 (3<<4)
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#define SI5351_R_DIV_16 (4<<4)
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#define SI5351_R_DIV_32 (5<<4)
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#define SI5351_R_DIV_64 (6<<4)
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#define SI5351_R_DIV_128 (7<<4)
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#define SI5351_DIVBY4 (3<<2)
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#define SI5351_REG_3_OUTPUT_ENABLE_CONTROL 3
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#define SI5351_REG_16_CLK0_CONTROL 16
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#define SI5351_REG_17_CLK1_CONTROL 17
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#define SI5351_REG_18_CLK2_CONTROL 18
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#define SI5351_REG_26_PLL_A 26
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#define SI5351_REG_34_PLL_B 34
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#define SI5351_REG_42_MULTISYNTH0 42
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#define SI5351_REG_50_MULTISYNTH1 50
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#define SI5351_REG_58_MULTISYNTH2 58
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#define SI5351_CLK_POWERDOWN (1<<7)
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#define SI5351_CLK_INTEGER_MODE (1<<6)
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#define SI5351_CLK_PLL_SELECT_B (1<<5)
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#define SI5351_CLK_INVERT (1<<4)
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#define SI5351_CLK_INPUT_MASK (3<<2)
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#define SI5351_CLK_INPUT_XTAL (0<<2)
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#define SI5351_CLK_INPUT_CLKIN (1<<2)
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#define SI5351_CLK_INPUT_MULTISYNTH_0_4 (2<<2)
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#define SI5351_CLK_INPUT_MULTISYNTH_N (3<<2)
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#define SI5351_CLK_DRIVE_STRENGTH_MASK (3<<0)
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#define SI5351_CLK_DRIVE_STRENGTH_2MA (0<<0)
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#define SI5351_CLK_DRIVE_STRENGTH_4MA (1<<0)
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#define SI5351_CLK_DRIVE_STRENGTH_6MA (2<<0)
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#define SI5351_CLK_DRIVE_STRENGTH_8MA (3<<0)
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#define SI5351_REG_177_PLL_RESET 177
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#define SI5351_PLL_RESET_B (1<<7)
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#define SI5351_PLL_RESET_A (1<<5)
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#define SI5351_REG_183_CRYSTAL_LOAD 183
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#define SI5351_CRYSTAL_LOAD_6PF (1<<6)
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#define SI5351_CRYSTAL_LOAD_8PF (2<<6)
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#define SI5351_CRYSTAL_LOAD_10PF (3<<6)
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#define SI5351_CRYSTAL_FREQ_25MHZ 25000000
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void si5351_init(void);
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void si5351_setupPLL(uint8_t pll, /* SI5351_PLL_A or SI5351_PLL_B */
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uint8_t mult,
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uint32_t num,
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uint32_t denom);
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void si5351_setupMultisynth(uint8_t output,
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uint8_t pllSource,
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uint32_t div,
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uint32_t num,
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uint32_t denom,
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uint8_t drive_strength);
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void si5351_set_frequency(int channel, int freq, uint8_t drive_strength);
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