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100 lines
2.1 KiB
Markdown
100 lines
2.1 KiB
Markdown
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| Supported Targets | ESP32-S2 | ESP32-S3 |
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| ----------------- | -------- | -------- |
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# USB CDC-ACM Host Driver BG96 Example
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(See the README.md file in the upper level 'examples' directory for more information about examples.)
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This example shows how to set up ESP chip to interface with CDC-like device by using the CDC-ACM Host Driver. CDC-like devices implement a Vendor-specific class, and support a subset of the functions of a fully compliant CDC-ACM device.
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## How to use example
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### Hardware Required
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Any ESP board with USB-OTG supported and a Quectel BG96 LTE/GPS modem.
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Connect USB_D+, USB_D-, GND and +5V signals of ESP board to BG96.
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_Note:_ Quectel BG96 modem must be started after power-up by applying low pulse on PWRKEY (pin 15).
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#### Pin Assignment
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See common pin assignments for USB Device examples from [upper level](../../../README.md#common-pin-assignments).
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### Build and Flash
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Build the project and flash it to the board, then run monitor tool to view serial output:
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```bash
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idf.py -p PORT flash monitor
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```
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(Replace PORT with the name of the serial port to use.)
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(To exit the serial monitor, type ``Ctrl-]``.)
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See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
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## Example Output
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After the flashing you should see the output at idf monitor:
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```
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I (276) BG96: USB Host installed
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I (24446) AT: ATE0
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I (24446) AT:
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OK
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I (24526) AT:
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+QIND: SMS DONE
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I (24646) AT:
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APP RDY
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I (25446) BG96: Sending AT
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I (25446) AT:
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OK
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I (26446) BG96: Enabling GNSS
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I (26446) AT:
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OK
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GPVTG Sentence:
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Track [deg]: 0.00
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Speed [kmph]: 0.00
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Speed [knots]: 0.00
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GPGSA Sentence:
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Mode: A
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Fix: 1
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PDOP: 0.00
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HDOP: 0.00
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VDOP: 0.00
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GPGGA sentence
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Number of satellites: 0
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Altitude: 0.000000
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GPRMC sentence
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Longitude:
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Degrees: 0
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Minutes: 0.000000
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Cardinal:
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Latitude:
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Degrees: 0
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Minutes: 0.000000
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Cardinal:
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Date & Time: 00 Jan 00:00:00 1900
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Speed, in Knots: 0.000000
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Track, in degrees: 0.000000
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Magnetic Variation:
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Degrees: 0.000000
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Cardinal:
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Invalid Magnetic Variation Direction!
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Adjusted Track (heading): 0.000000
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I (27446) BG96: Sending AT+GSN
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I (27446) AT:
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860517045660414
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OK
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...
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```
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