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27 lines
553 B
27 lines
553 B
/* |
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* prucomm.h - structure definitions for communication |
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* |
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*/ |
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#ifndef PRUCOMM_H |
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#define PRUCOMM_H |
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#include "pru_defs.h" |
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#define NUM_RING_ENTRIES 200 |
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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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#endif
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