# Need help finding groups in hex buffer
**URL:** https://discourse.nodered.org/t/need-help-finding-groups-in-hex-buffer/59253
**Category:** General
**Created:** [2 March 2022 20:11 UTC](https://discourse.nodered.org/t/need-help-finding-groups-in-hex-buffer/59253 "2022-03-02T20:11:12Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@JohnnyPicnic](https://discourse.nodered.org/u/JohnnyPicnic)
#### Post date: [2 March 2022 20:11 UTC](https://discourse.nodered.org/t/need-help-finding-groups-in-hex-buffer/59253/1 "2022-03-02T20:11:12Z")
I have a hex buffer that contains information about my oven. I may be reinventing the wheel a bit here as some of this has been done in python.
I would like to be able to sort out any of these oven codes from the buffer.
There are more than this...
# Oven codes
ACTIVE\_F\_CODE\_STATUS = "0x5005"
CONVECTION\_CONVERSION = "0x5003"
ELAPSED\_ON\_TIME = "0x5004"
END\_TONE = "0x5001"
HOUR\_12\_SHUTOFF\_ENABLED = "0x5000"
KEY\_PRESSED = "0x5006"
UPPER\_OVEN\_AVAILABLE\_COOK\_MODES = "0x510b"
UPPER\_OVEN\_COOK\_MODE = "0x5100"
UPPER\_OVEN\_COOK\_TIME\_REMAINING = "0x5104"
UPPER\_OVEN\_CURRENT\_STATE = "0x5101"
UPPER\_OVEN\_DELAY\_TIME\_REMAINING = "0x5102"
UPPER\_OVEN\_DISPLAY\_TEMPERATURE = "0x5109"
UPPER\_OVEN\_ELAPSED\_COOK\_TIME = "0x5108"
UPPER\_OVEN\_KITCHEN\_TIMER = "0x5105"
UPPER\_OVEN\_PROBE\_DISPLAY\_TEMP = "0x5103"
UPPER\_OVEN\_PROBE\_PRESENT = "0x5107"
UPPER\_OVEN\_REMOTE\_ENABLED = "0x510a"
Example hex buffer is:
e2 bf 25 80 f5 04 **50 06** 01 17 **51 00** 0d 01 01 5e 00 00 00 00 00 00 00 00 00 00 **51 01** 01 01 **51 0a** 01 01 3b ef e3
The third hex contains the total length, in this case 25
The sixth hex contains the number of groups of data, in this case 4
Second and third last hex are CRC and last hex always end in e3.
The groups are 5006, 5100, 5101 and 510a.
Is there a logical way to dynamically sort this? The groups of data changes and therefore the length and quantity of data changes as well.
Desired outcome would be:
**50 06** 01 17
**51 00** 0d 01 01 5e 00 00 00 00 00 00 00 00 00 00
**51 01** 01 01
**51 0a** 01 01
Another buffer for reference:
e2 bf 2a 80 f5 05 **50 06** 01 03 **51 00** 0d 00 01 5e 00 00 00 00 00 00 00 00 00 00 **51 01** 01 00 **51 08** 02 ff ff **51 0a** 01 00 8e 7f e3
---
### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [1 May 2022 20:12 UTC](https://discourse.nodered.org/t/need-help-finding-groups-in-hex-buffer/59253/2 "2022-05-01T20:12:09Z")
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