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updated USB_OTG in dfu.rst, usb_device.rst and secure-boot-v2.rst

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Linda
2022-09-14 14:15:32 +08:00
parent 2ad7b85a9e
commit 9c0d573eae
4 changed files with 9 additions and 7 deletions
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docs/en/api-reference/peripherals/usb_device.rst
+2 -2
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@@ -15,7 +15,7 @@ The driver allows you to use {IDF_TARGET_NAME} chips to develop USB devices on a
TinyUSB stack is distributed via `IDF Component Registry <https://components.espressif.com/components/espressif/esp_tinyusb>`_.
Our USB-OTG implementation is limited to {IDF_TARGET_USB_EP_NUM} USB endpoints ({IDF_TARGET_USB_EP_NUM_INOUT} IN/OUT endpoints and {IDF_TARGET_USB_EP_NUM_IN} IN endpoint) - find more information in `technical reference manual <{IDF_TARGET_TRM_EN_URL}>`_.
Our USB-OTG implementation is limited to {IDF_TARGET_USB_EP_NUM} USB endpoints ({IDF_TARGET_USB_EP_NUM_INOUT} IN/OUT endpoints and {IDF_TARGET_USB_EP_NUM_IN} IN endpoint) . Please note that enabling Secure Boot or flash encryption disables the USB-OTG USB stack in the ROM, disallowing updates via the serial emulation or Device Firmware Update (DFU) on that port. For more details, please refer to `technical reference manual <{IDF_TARGET_TRM_EN_URL}>`_.
Features
--------
@@ -38,7 +38,7 @@ On {IDF_TARGET_NAME}, connect GPIO {IDF_TARGET_USB_DP_GPIO_NUM} and {IDF_TARGET_
.. figure:: ../../../_static/usb-board-connection.png
:align: center
:alt: Connection of an ESP board to a USB host
:alt: Connection of an ESP board to a USB host
:figclass: align-center
Self-powered devices must also connect VBUS through voltage divider or comparator, more details in :ref:`self-powered-device` subchapter.