![]() Closes IDF-2029 |
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.. | ||
main | ||
CMakeLists.txt | ||
README.md | ||
sdkconfig.defaults |
README.md
Supported Targets | ESP32-S2 |
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TinyUSB Sample Descriptor
(See the README.md file in the upper level 'examples' directory for more information about examples.)
This example shows how to set up ESP32-S2 chip to work as a USB Serial Device.
As a USB stack, a TinyUSB component is used.
How to use example
Hardware Required
- Any board with the ESP32-S2 chip with USB connectors or with exposed USB's D+ and D- (DATA+/DATA-) pins.
If the board has no USB connector, but has the pins connect pins directly to the host (e.g. with DIY cable from any USB connection cable)
ESP32-S2 BOARD USB CONNECTOR (type A)
--
| || VCC
[GPIO 19] --------> | || D-
[GPIO 20] --------> | || D+
| || GND
--
You can also use power from the USB connector.
Build and Flash
Build the project and flash it to the board, then run monitor tool to view serial output:
idf.py -p PORT flash monitor
(Replace PORT with the name of the serial port to use.)
(To exit the serial monitor, type Ctrl-]
.)
See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
Serial Connection
After program's start and getting of the message of readiness (Serial device is ready to connect
) you can connect to the board using any serial port terminal application (e.g. CoolTerm).
Example Output
After the flashing you should see the output:
I (346) example: USB initialization
I (346) TinyUSB: Driver installation...
I (346) TinyUSB - Descriptors Control: Setting of a descriptor:
.bDeviceClass = 239
.bDeviceSubClass = 2,
.bDeviceProtocol = 1,
.bMaxPacketSize0 = 64,
.idVendor = 0x0000303a,
.idProduct = 0x00004001,
.bcdDevice = 0x00000100,
.iManufacturer = 0x01,
.iProduct = 0x02,
.iSerialNumber = 0x03,
.bNumConfigurations = 0x01
I (362) TinyUSB: Driver installed
I (362) example: USB initialization DONE
I (922) example: Line state changed! dtr:0, rst:0
Let's try to send a string "espressif" and get the return string in your console on PC:
I (18346) example: Got data (9 bytes): espressif