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doc: Revise release notes

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- Make it even clearer that legacy device apps WILL NOT WORK.
- Add helpful links to the CH55x Reset Controller, both where to buy
  one and source repo.
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Michael Cardell Widerkrantz 2025-02-12 14:03:28 +01:00
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doc/release_notes.md
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@ -7,10 +7,12 @@ Descriptions of the tagged TKey releases.
Overview of changes since TK TK1-24.03 for the Castor milestone so
far.
**Note well**: BREAKING CHANGE! The introduction of the USB Controller
Protocol betwen the programs running on the PicoRV32 CPU and the CH552
means that device apps that have not been changed to use the protocol
will not have any way to communicate with the outside world.
**Note well**: BREAKING CHANGE! Older device apps WILL NOT WORK.
The introduction of the USB Mode Protocol between the programs running
on the PicoRV32 CPU and the CH552 means that device apps that have not
been changed to use the protocol will not have any way to communicate
with the outside world.
### General
@ -53,7 +55,7 @@ For full change log [see](https://github.com/tillitis/tillitis-key1/compare/TK1-
- At startup, fill RAM with random data using the xorwow PRNG, seeded
by TRNG.
- Add support for the new USB Controller Protocol to communicate with
- Add support for the new USB Mode Protocol to communicate with
different endpoints.
### CH552
@ -68,6 +70,13 @@ For full change log [see](https://github.com/tillitis/tillitis-key1/compare/TK1-
- Change USB frame sending from a software timer to instead be
controlled by the USB Controller Protocol.
Note that to update the CH552 firmware you will need something like
the Blinkinlabs CH55x Reset Controller:
https://shop-nl.blinkinlabs.com/products/ch55x-reset-controller
https://github.com/Blinkinlabs/ch55x_programmer
### tkey-builder
- New versions of: