Decoder

itm_decode

Struct Decoder 

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pub struct Decoder { /* private fields */ }
Expand description

ITM and DWT packet protocol decoder.

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impl Decoder

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pub fn new(options: DecoderOptions) -> Self

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pub fn push(&mut self, data: &[u8])

Push trace data into the decoder.

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pub fn pull(&mut self) -> Result<Option<TracePacket>, MalformedPacket>

Decode the next TracePacket.

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pub fn pull_with_timestamp(&mut self) -> Option<TimestampedTracePackets>

Pull the next set of ITM data packets (not timestamps) from the decoder and associates a Timestamp. Assumes that local timestamps will be found in the bitstream.

According to (Appendix C1.7.1, page 710-711), a local timestamp relating to a single, or to a stream of back-to-back packets, is generated and sent after the data packets in question in the bitstream.

This function thus Decoder::pulls packets until a local timestamp is read (by default), and opportunely calculates an associated Timestamp: local timestamps monotonically increase an internal delta counter; upon a global timestamps the base is updated, and the delta is reset.

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