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bd2e819368
- adc_wait_samples now returns the actual number of samples available at the time it returns. this simplifies a pattern where one would wait on samples if blocking and then subsequently check the number of available samples. - adc.insertsamples(id, table, idx, count) function now available to take samples and insert them into a table. this is slightly slower than assignment for single values in a table, but can avoid having to use getsamples (returning new tables) for certain situations idx: starting index in table where values will be inserted count: number of samples to get from channel id
63 lines
2.3 KiB
C
63 lines
2.3 KiB
C
#ifndef __ELUA_ADC_H__
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#define __ELUA_ADC_H__
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#include "type.h"
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#include "platform_conf.h"
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typedef struct
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{
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// Status Bit Flags
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volatile u8 op_pending: 1, // Is there a pending conversion?
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blocking: 1, // Are we in blocking or non-blocking mode? (0 - blocking, 1 - nonblocking)
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freerunning: 1, // If true, we don't stop when we've acquired the requested number of samples
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smooth_ready: 1, // Has smoothing filter warmed up (i.e. smoothlen samples collected)
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value_fresh: 1; // Whether the value pointed to by value_ptr is fresh
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unsigned id;
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u8 logsmoothlen;
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volatile u16 smoothidx;
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volatile u32 smoothsum;
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u16 *smoothbuf;
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volatile u16 reqsamples;
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volatile u16 *value_ptr;
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} elua_adc_ch_state;
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typedef struct
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{
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elua_adc_ch_state *ch_state[ NUM_ADC ];
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volatile u16 sample_buf[ NUM_ADC ];
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volatile u8 clocked: 1,
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force_reseq: 1,
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skip_cycle: 1,
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running: 1; // Whether or not sequence is running
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volatile u32 ch_active; // bits represent whether channel should be converted on this device
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volatile u32 last_ch_active; // keep copy of old configuration
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unsigned timer_id, seq_id; // Timer bound to device, sequencer device id
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volatile u8 seq_ctr, seq_len;
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} elua_adc_dev_state;
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// Channel Management
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#define ACTIVATE_CHANNEL( d, id ) ( d->ch_active |= ( ( u32 )1 << ( id ) ) )
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#define INACTIVATE_CHANNEL( d, id ) ( d->ch_active &= ~( ( u32 )1 << ( id ) ) )
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#define INCR_SEQCTR( d ) ( d->seq_ctr++ )
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int adc_setup_channel( unsigned id, u8 logcount );
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void adc_update_dev_sequence( unsigned dev_id );
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void adc_init_dev_state( unsigned dev_id );
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elua_adc_dev_state *adc_get_dev_state( unsigned dev_id );
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void adc_smooth_data( unsigned id );
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elua_adc_ch_state *adc_get_ch_state( unsigned id );
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u16 adc_get_processed_sample( unsigned id );
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void adc_init_ch_state( unsigned id );
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int adc_update_smoothing( unsigned id, u8 loglen );
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void adc_flush_smoothing( unsigned id );
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u16 adc_samples_requested( unsigned id );
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u16 adc_samples_available( unsigned id );
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u16 adc_wait_samples( unsigned id, unsigned samples );
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#endif
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