mirror of https://github.com/espressif/esp-idf.git synced 2024-10-05 20:47:46 -04:00

Andrei Gramakov 84aa1c0cc3 usb: cdc support, streams redirection; ci, examples upd

tusb: cdc, tasks encapsulation, callbacks api, multiple interfaces
examples: added serial interface and usb console
ci: reimplemented cmake/make test in python with ignore lists

IDF-578

2020-08-06 15:26:08 +02:00

2.4 KiB

Raw Blame History

Supported Targets	ESP32-S2

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 get log output via Serial Device connection

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).

Note: if you want to send data to the target see how to implement it via tud_cdc_rx_cb at the tusb_serial_device example.

Example Output

After the flashing you should see the output at idf monitor:

I (340) example: USB initialization
I (340) TinyUSB: Driver installation...
I (340) 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 (373) TinyUSB: Driver installed
I (373) example: USB initialization DONE
I (383) example: log -> UART
example: print -> stdout
example: print -> stderr
...

Other log will be printed to USB:

I (5382) example: log -> USB
example: print -> stdout
example: print -> stderr
...

2.4 KiB Raw Blame History