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7492f9b9cd
- usb_device: add esp32h4 DP/DM defaults (GPIO22/21) and "only:: esp32h4";
add H4 PHY considerations; add H4 MSC write-speed table; generalize MSC SD
note to {IDF_TARGET_NAME}; exclude tusb_ncm on H4
- usb_host: include esp32h4 in feature gates; add H4 PHY considerations
- usb_host_notes_dwc_otg: enable H4 by extending "only::" selector
- examples/usb: add ESP32-H4 row to DP/DM pin map
- docs_not_updated: drop H4 entries for usb_device, usb_host, and related
usb_host notes now covered
- soc(esp32h4): set internal PHY mapping to DP=22, DM=21
USB-OTG Examples
See the README.md file in the upper level examples directory for more information about examples.
Common Pin Assignments
Pin assignment is only needed for ESP chips that have a USB-OTG peripheral. If your board doesn't have a USB connector connected to the USB-OTG dedicated GPIOs, you may have to DIY a cable and connect D+ and D- to the pins listed below.
ESP BOARD USB CONNECTOR (type A)
--
| || VBUS (5V)
[USB_DM] ------> | || D-
[USB_DP] ------> | || D+
| || GND
--
USB PHY pin mapping
| USB_DP | USB_DM | |
|---|---|---|
| ESP32-S2/S3 | GPIO20 | GPIO19 |
| ESP32-P4 2.0 | pin 50 | pin 49 |
| ESP32-P4 1.1 | GPIO27 | GPIO26 |
| ESP32-H4 | GPIO22 | GPIO21 |
Note: On the ESP32-P4, the USB 2.0 PHY pins are dedicated to USB-OTG functionality and cannot be used as general-purpose GPIOs.