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esp-idf/examples/peripherals/usb
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peter.marcisovsky 196bc310e5 feat(usb_host): Move DMA capable memory to external ram on P4 
- DWC-OTG internal DMA can access psram on esp32p4
    - Move DMA memory buffs to psram, to save internal ram
    - HCD tests and MSC example runs in CI with psram enabled
2025-05-13 13:32:38 +02:00
..
device
fix(examples): tusb_midi task stack overflow fix
2024-11-14 16:43:27 +01:00
host
feat(usb_host): Move DMA capable memory to external ram on P4
2025-05-13 13:32:38 +02:00
README.md
refactor(usb/phy): Merge P4 and S2/S3 PHYs into one module
2025-01-16 10:25:25 +01:00

README.md

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 51 pin 50
ESP32-P4 1.1 GPIO27 GPIO26

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.