2014-08-13 14:52:12 -03:00
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/*
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* prucomm.h - structure definitions for communication
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*
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*/
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2016-02-17 21:26:01 -04:00
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#pragma once
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2014-08-13 14:52:12 -03:00
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#include "pru_defs.h"
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2014-10-07 00:05:11 -03:00
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#define NUM_RING_ENTRIES 300
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2014-08-13 14:52:12 -03:00
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#define PWM_CMD_MAGIC 0xf00fbaaf
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#define PWM_REPLY_MAGIC 0xbaaff00f
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struct ring_buffer {
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volatile uint16_t ring_head;
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volatile uint16_t ring_tail;
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struct {
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uint16_t pin_value;
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uint16_t delta_t;
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} buffer[NUM_RING_ENTRIES];
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};
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/* the command is at the start of shared DPRAM */
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#define RBUFF ((volatile struct ring_buffer *)DPRAM_SHARED)
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