tests/hw-ab: write the flash hex in byte order so DAPLink can decode it - #11610
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Eric Anderson (humanapp) wants to merge 1 commit into
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Eric Anderson (humanapp) wants to merge 1 commit into
Eric Anderson (humanapp) wants to merge 1 commit into
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…r to prevent DAPLink errors
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Replaces the buffered copy in run-capture.js with a sequential per-chunk-synced write.
DAPLink parses the incoming hex as a stream and cannot tolerate blocks arriving out of order. A buffered copy lets the page cache reorder writes, and the board fails the flash with a 521 error; its FAIL.TXT reads "File sent out of order by PC". Writing 4KB chunks and syncing each before the next forces on-device order.
Observed on macOS, where the buffered copy produced repeatable 521 errors on the microbit. With the ordered write the same hexes flash cleanly.