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72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
/*
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* Copyright (C) 2020 Kaspar Schleiser <kaspar@schleiser.de>
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* Freie Universität Berlin
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* Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup sys
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* @{
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*
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* @file
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* @brief Execution tracing module implementation
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*
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* @author Kaspar Schleiser <kaspar@schleiser.de>
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*
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* @}
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*/
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#include <stdio.h>
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#include "architecture.h"
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#include "irq.h"
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#include "ztimer.h"
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#ifndef CONFIG_TRACE_BUFSIZE
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#define CONFIG_TRACE_BUFSIZE 512
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#endif
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typedef struct {
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uint32_t time;
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uint32_t val;
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} tracebuf_entry_t;
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static tracebuf_entry_t tracebuf[CONFIG_TRACE_BUFSIZE];
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static size_t tracebuf_pos;
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void trace(uint32_t val)
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{
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unsigned state = irq_disable();
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tracebuf[tracebuf_pos % CONFIG_TRACE_BUFSIZE] =
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(tracebuf_entry_t){ .time = ztimer_now(ZTIMER_USEC), .val = val };
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tracebuf_pos++;
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irq_restore(state);
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}
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void trace_dump(void)
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{
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size_t n = tracebuf_pos >
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CONFIG_TRACE_BUFSIZE ? CONFIG_TRACE_BUFSIZE : tracebuf_pos;
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uint32_t t_last = 0;
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for (size_t i = 0; i < n; i++) {
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printf("n=%4" PRIuSIZE " t=%s%8" PRIu32 " v=0x%08" PRIx32 "\n", i,
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i ? "+" : " ",
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tracebuf[i].time - t_last, tracebuf[i].val);
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t_last = tracebuf[i].time;
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}
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}
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void trace_reset(void)
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{
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unsigned state = irq_disable();
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tracebuf_pos = 0;
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irq_restore(state);
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}
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