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Merged
InboundFrog merged 4 commits into from
Sep 25, 2026
Merged

owner/reduce-device-re-reads #56

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80e7f48
Update Claude and IDE ignores
InboundFrog Sep 25, 2026
cae5ddd
Format README.me
InboundFrog Sep 25, 2026
ac8eeaf
Reduce device physical reads on general capture
InboundFrog Sep 25, 2026
3aff954
Remove unused function
InboundFrog Sep 25, 2026
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5 changes: 5 additions & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -9,3 +9,8 @@

# Claude local only configs
.claude/*.local.*
.claude/worktrees/

# IDE - JetBrains
.idea/
*.iml
28 changes: 14 additions & 14 deletions README.md
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Expand Up @@ -58,12 +58,12 @@ bgl-read --list

### Output formats

| `--format` | Description |
|---|---|
| `json` | Device info and readings as pretty-printed JSON |
| `csv` | One reading per row, header included |
| `records` | Raw ASTM record text as received from the meter (useful for debugging) |
| `bytes` | Hex dump of every HID packet exchanged (TX and RX) |
| `--format` | Description |
|------------|------------------------------------------------------------------------|
| `json` | Device info and readings as pretty-printed JSON |
| `csv` | One reading per row, header included |
| `records` | Raw ASTM record text as received from the meter (useful for debugging) |
| `bytes` | Hex dump of every HID packet exchanged (TX and RX) |

Timestamps are in the meter's own local time (no timezone attached — the device
has no concept of timezone).
Expand All @@ -74,14 +74,14 @@ has no concept of timezone).

All Contour Next devices share USB vendor ID `0x1A79` (Ascensia / Bayer).

| Product ID | Device |
|------------|--------|
| `0x7800` | Contour Next One (USB-only variant) |
| `0x7440` | Contour Next USB |
| `0x7350` | Contour Next |
| `0x7900` | Ascensia Contour Next |
| `0x6220` | Contour Next Link |
| `0x6230` | Contour Next Link 2.4 |
| Product ID | Device |
|------------|-------------------------------------|
| `0x7800` | Contour Next One (USB-only variant) |
| `0x7440` | Contour Next USB |
| `0x7350` | Contour Next |
| `0x7900` | Ascensia Contour Next |
| `0x6220` | Contour Next Link |
| `0x6230` | Contour Next Link 2.4 |

The tool opens the first matching device it finds. Run `--list` to see what is
connected.
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13 changes: 7 additions & 6 deletions bin/capture-bgl
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Expand Up @@ -11,14 +11,15 @@ CAP_DIR="${PRJ_DIR}/captures"
DATE_CAP=$(date "+%Y%m%d")
PREFIX="${1:-unknown}"

echo_err() {
echo "$1" >&2
}

# Ensure the captures directory exists
mkdir -p "${CAP_DIR}/${DATE_CAP}"

cargo run -- --format csv --progress --output "${CAP_DIR}/${DATE_CAP}/${PREFIX}-bgl.csv"
cargo run -- --format json --progress --output "${CAP_DIR}/${DATE_CAP}/${PREFIX}-bgl.json"
# Read records first, to reduce device calls
cargo run -- --format records --progress --output "${CAP_DIR}/${DATE_CAP}/${PREFIX}-bgl.txt"
# Generate CSV and JSON from the records capture
cargo run -- --from-records "${CAP_DIR}/${DATE_CAP}/${PREFIX}-bgl.txt" --format csv --output "${CAP_DIR}/${DATE_CAP}/${PREFIX}-bgl.csv"
cargo run -- --from-records "${CAP_DIR}/${DATE_CAP}/${PREFIX}-bgl.txt" --format json --output "${CAP_DIR}/${DATE_CAP}/${PREFIX}-bgl.json"
# Finally, re-capture to get the bytes
# TODO: Need to fix this so that a proper binary is generated and that can generate
# the records file, which can in turn generate the other formats?
cargo run -- --format bytes --progress --output "${CAP_DIR}/${DATE_CAP}/${PREFIX}-bgl.hex"
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