49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
#pragma once
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#include <stdint.h>
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struct attenuator_gpio {
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uint32_t bank;
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uint32_t gpio_nr;
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};
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/* definition o the Latch Enable line for one given Attenuator */
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struct attenuator_def {
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struct attenuator_gpio le;
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};
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/* Our board has two attenuators in series for each RF channel */
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struct attenuator_channel_def {
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const char *name;
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unsigned int num_stages;
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const struct attenuator_def *stage;
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};
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struct attenuator_cfg {
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unsigned int num_channels;
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const struct attenuator_channel_def *channels;
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struct attenuator_gpio gpio_clock;
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struct attenuator_gpio gpio_data;
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};
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enum attenuator_value {
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ATT_VAL_CURRENT,
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ATT_VAL_STARTUP
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};
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/* dynamic [runtime] state of one attenuator chip */
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struct attenuator_state {
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struct {
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uint8_t current;
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uint8_t startup;
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} value_qdB;
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};
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int attenuator_stage_set(uint8_t channel, uint8_t stage, uint8_t val_qdb);
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int attenuator_stage_get(uint8_t channel, uint8_t stage, enum attenuator_value av);
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void attenuator_init(const struct attenuator_cfg *cfg,
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struct attenuator_state **state);
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int attenuator_chan_set(uint8_t channel, uint8_t val_qdb, bool split_equal);
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int attenuator_chan_get(uint8_t channel, enum attenuator_value av);
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