[63] Flipper Zero - Sub-GHz CC1101 (Bandwidth)

Описание: In this video we learn about the CC1101 data sheet. We learn about key areas of the data sheet (page 5, 68, etc.) We learn about how to look up the existing Flipper Zero preset register data for Sub-GHz (like AM270 and AM650). We decode some of the existing data and then we encode our own data, creating a 100kHz bandwidth setting in the Flipper Zero. We also learn how to take the complex looking formulas to create easy to read tables, which help in understanding our possible values. In the summary, we look at an unrelated field in the spec, which we now are able to understand much better.

In my previous video, "Flipper Zero - Sub-GHz custom settings", we copied the data from this video to create a 100kHz bandwidth filter. That video goes into more detail on how the bandwidth filter actually impacts OOK (ASK) modulation:
   • [62] Flipper Zero - Sub-GHz Custom Settings  

CC1101 data sheet:
https://www.ti.com/lit/ds/symlink/cc1...
https://www.ti.com/lit/ds/symlink/cc1...
https://www.ti.com/lit/ds/symlink/cc1...

Wiki:
https://github.com/jamisonderek/flipp...

Timeline:
0:00 - Intro
0:31 - CC1101 schematic
0:51 - 26MHz crystal
1:04 - CC1101 data sheet specification
1:16 - Page 5 (Table of contents)
1:23 - Page 68 (Registers)
1:38 - Crystal Oscillator
2:02 - Receiver Channel Filter Bandwidth
2:22 - MDMCFG4
2:36 - 0x10 MDMCFG4, BW_E, BW_M
3:11 - bits to combos
3:33 - Excel to make chart
4:55 - subghz_setting - AM270/AM650 defns
5:12 - preset_ook_270khz_async
5:37 - calc - programmer - decoding hex
5:55 - decoding BW_E and BW_M
7:01 - 650kHz bandwidth
7:52 - 100kHz (101.56) bandwidth
9:00 - Updating setting_user file
10:18 - Deploying to Flipper
11:00 - Summary (demo of another property in spec)

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