Daniel Mangum 4e3e73f353 fix(examples/usb_host_lib): correct typo in comments
Fixes a small typo in comments

Signed-off-by: Daniel Mangum <georgedanielmangum@gmail.com>
2024-11-10 19:39:53 -05:00
..

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)
                          --
                         | || VCC
[USBPHY_DM_NUM]  ------> | || D-
[USBPHY_DP_NUM]  ------> | || D+
                         | || GND
                          --

Refer to soc/usb_pins.h to find the real GPIO number of USBPHY_DP_NUM and USBPHY_DM_NUM.

USB_DP USB_DM
ESP32-S2/S3 GPIO20 GPIO19
ESP32-P4 pin 51 pin 50

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.