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[docs] Move resources to chip family docs

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Kuba Szczodrzyński
2023-01-18 17:55:58 +01:00
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docs/platform/beken-72xx/README.md
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# Beken 72xx - notes
# Beken 72xx
## Resources
Name | Notes
------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------
[BK7231U Datasheet v0.71](https://cdn.discordapp.com/attachments/983843871320580096/1050461302537064508/BK7231Uv0.71.zh-CN.en.pdf) | Machine-translated to English
[BL2028N Datasheet v1.0](https://cdn.discordapp.com/attachments/983843871320580096/1050461346111697028/BL2028N_Datasheet_v1.0.pdf) | BL2028N is a "clone" of BK7231N
[BK72XX SDK User Manual 3.0.3](https://cdn.discordapp.com/attachments/983843871320580096/1003661237730672730/BK72XX_SDK_User_Manual-3.0.3.pdf) | Machine-translated to English
[BEKEN WiFi SDK API Reference 3.0.27](https://cdn.discordapp.com/attachments/983843871320580096/1003661237349003355/BEKEN_WiFi_SDK_API_Reference-3.0.27_compressed.pdf) | Machine-translated to English
[Beken SDK documentation (online)](http://docs.bekencorp.com/backup/v3.0/) | Not much here
[`encrypt v0.3` source code](https://github.com/ghsecuritylab/tysdk_for_bk7231/tree/master/toolchain/encrypt_crc) |
[`ota_tools` source code](https://github.com/tiancj/rtt_ota_tools) | Encryption routines and FPGA code used on the chip
[BK7231 OpenOCD debugging](https://www.elektroda.com/rtvforum/viewtopic.php?p=20028605#20028605) | From Elektroda.pl user `@xabean`
## General info
There are many chip variations in this SoC family:
- BK7231
- BK7231 - marked BK7321QN40, so we're calling it "BK7231Q" to reduce confusion
- BK7231T
- BK7231N
- BK7231S
- BK7231U
The "officially existing" ones are BK7231, BK7231N and BK7231U. These are supported by Beken SDKs, such as `bdk_freertos`, although `bk7231s_alios_sdk` also existed at some point.
The "officially existing" ones are BK7231Q, BK7231N and BK7231U. These are supported by Beken SDKs, such as `bdk_freertos`, although `bk7231s_alios_sdk` also existed at some point.
- BK7231N is substantially different than the other chips, so running T code on N (and vice versa) is not directly possible.
- BK7231 does not have eFuse.
- BK7231Q does not have eFuse.
- there are some references to U meaning USB support
- T seems to be exclusive to Tuya boards (that would explain the name); in the T SDK from Tuya, `CFG_SOC_NAME` is set to `SOC_BK7231U`
- T's bootloader greets with `BK7231S_1.0.5` on UART