39 lines
749 B
C++
39 lines
749 B
C++
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#include "trace.h"
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#include <algorithm>
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#include "itoa.h"
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#include "lock.h"
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#include "uart.h"
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namespace tracing {
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namespace {
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constexpr size_t kTraceBufferSize = 256;
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std::array<TraceEvent, kTraceBufferSize> buffer;
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size_t write_ptr = 0;
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} // namespace
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void trace(int raw_event) { trace(static_cast<TraceEvent>(raw_event)); }
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void trace(TraceEvent event) {
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InterruptLock lock;
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buffer[write_ptr] = event;
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write_ptr = (write_ptr + 1) % buffer.size();
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}
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void dump() {
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std::rotate(buffer.begin(), buffer.begin() + write_ptr, buffer.end());
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char number[] = "00000000\r\n";
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for (TraceEvent event : buffer) {
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itoa(static_cast<int>(event), number);
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UartSendCrash(number);
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}
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}
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} // namespace tracing
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