CDC Serial Performance

dev.io.cdc_perf - wire path i\y - generated from fwMenuCdcPerf.

cdc_perf_blast

Blast. Streams Bytes of deterministic XORshift32 pattern data device-to-host as fast as possible in Chunk-sized writes. Prints the line <<>> before the raw binary begins. Returns bytes,elapsed_us,crc32 (CRC-32 of the payload)

Wire command: i\y\b

Arg	Wire type
bytes	dec
chunk	dec

Returns: bytes (dec), elapsed_us (dec), crc32 (hex)

dev.io.cdc_perf.cdc_perf_blast(bytes: int, chunk: int) -> Result

ow_status ow_io_cdc_perf_cdc_perf_blast(ow_device* dev, int32_t bytes, int32_t chunk, int32_t* bytes_out, int32_t* elapsed_us, uint32_t* crc32);

dev.io().cdc_perf().cdc_perf_blast(bytes: i32, chunk: i32) -> Result<(i32, i32, u32), OwError>

The C and Rust signatures above are also the WASM guest signatures - the device API surface is identical; only the transport differs (ow_open_wasm(&dev) in C, OneWili::open() in Rust).

dev.io.cdc_perf.cdc_perf_blast(bytes, chunk)   # returns value; check dev.ok

cdc_perf_sink

Sink. Receives exactly Bytes of raw binary host-to-device and CRC-32-accumulates them. Prints the line <<>> when ready to receive. A 10 second inactivity timeout aborts with failure. Returns bytes,elapsed_us,crc32

Wire command: i\y\s

Arg	Wire type
bytes	dec

Returns: bytes (dec), elapsed_us (dec), crc32 (hex)

dev.io.cdc_perf.cdc_perf_sink(bytes: int) -> Result

ow_status ow_io_cdc_perf_cdc_perf_sink(ow_device* dev, int32_t bytes, int32_t* bytes_out, int32_t* elapsed_us, uint32_t* crc32);

dev.io().cdc_perf().cdc_perf_sink(bytes: i32) -> Result<(i32, i32, u32), OwError>

The C and Rust signatures above are also the WASM guest signatures - the device API surface is identical; only the transport differs (ow_open_wasm(&dev) in C, OneWili::open() in Rust).

dev.io.cdc_perf.cdc_perf_sink(bytes)   # returns value; check dev.ok

cdc_perf_echo

Echo. Per round reads exactly Chunk raw bytes from the host then writes them back verbatim, Rounds times. Prints the line <<>> when ready for round 1. A 10 second inactivity timeout aborts with failure. Returns rounds,elapsed_us

Wire command: i\y\e

Arg	Wire type
rounds	dec
chunk	dec

Returns: rounds (dec), elapsed_us (dec)

dev.io.cdc_perf.cdc_perf_echo(rounds: int, chunk: int) -> Result

ow_status ow_io_cdc_perf_cdc_perf_echo(ow_device* dev, int32_t rounds, int32_t chunk, int32_t* rounds_out, int32_t* elapsed_us);

dev.io().cdc_perf().cdc_perf_echo(rounds: i32, chunk: i32) -> Result<(i32, i32), OwError>

The C and Rust signatures above are also the WASM guest signatures - the device API surface is identical; only the transport differs (ow_open_wasm(&dev) in C, OneWili::open() in Rust).

dev.io.cdc_perf.cdc_perf_echo(rounds, chunk)   # returns value; check dev.ok