diff --git a/README.md b/README.md index 3984a99..71417b7 100644 --- a/README.md +++ b/README.md @@ -18,6 +18,13 @@ Debubo can send messages using any arbitrary Ordered Set, and receive all Ordere It also gives you control over Rd / Rp resistors on both CC pins, allowing it to act as a Debug Accessory or to simulate plug orientation reversal. +## SBU + +Debubo is meant to be used with devices that expose 3.3V UART on their USB-C receptacle's SBU pins. + +You can still use Debubo with other devices if you pair it with [SBUB](https://gitlab.com/dos1/sbub). This way you can access other kinds of interfaces exposed on SBU pins as well, +such as I2C (as seen, for example, on [MacBooks](https://github.com/AsahiLinux/docs/wiki/HW:USB-PD)). + ## Limitations - there's no control over VBus or a way to sense its state, so make sure both sides always agree on the negotiated voltage! @@ -66,6 +73,8 @@ and you can find alternative LCSC part numbers in component properties. You can When ordering PCBs from JLCPCB, set "Impedance Control" to "Yes", "Layer Stackup" to "JLC04161H-3313" and "Remove Order Number" to "Specify a location". +Free samples of STM32G071CBT6 can be ordered in [ST Online Store](https://estore.st.com/en/stm32g071cbt6-cpn.html). + ## Licensing © Copyright 2024 [Sebastian Krzyszkowiak](https://dosowisko.net/)