WIP: USB-PD VDM for Apple devices, add debug shell over UART #1
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This is an attempt to take advantage of the FUSB302 chip on the YZStudio ZY12PDN USB-PD Trigger to explore USB-PD VDMs (Vendor Defined Message) on Apple devices. See [Asahi Linux docs on USB-PD](https://github.com/AsahiLinux/docs/wiki/HW:USB-PD). - connect the SWD 3.3V pad to pin 1 (3.3V) on the Raspberry Pi - connect the SWD GND pad to pin 6 (GND) on the Raspberry Pi - program the STM32F0 via the SWD pads on the back of the ZY12PDN board - solder wires onto the STM32F0 chip's PA2 (USART1_TX) and PA3 (USART1_RX) pins (3.3V I/O) to gain access to the UART (the screw terminal must be desoldered first) - connect the PA2 (USART1_TX and PA3 (USART1_RX) wires to the Raspberry Pi's pin 10 (GPIO 15) and pin 8 (GPIO 14) respectively (see https://pinout.xyz) - use an USB Type-C breakout board to gain access to the D+/D- or SBU1/SBU2 signals since they're not accessible on the ZY12PDN Quickstart: sudo apt install -y openocd python3 python3-serial vi platformio.ini # optionally update upload_protocol for your SWD programmer pio run pio run -t upload miniterm --raw /dev/ttyS0 115200
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This is an attempt to take advantage of the FUSB302 chip on the YZStudio ZY12PDN USB-PD Trigger to send custom VDM messages to Apple devices. See Asahi Linux docs on USB-PD.
Building: