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sachinsharma
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sachinsharma
Asked: July 1, 2023In:
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Hi everyone, Is it possible to use the USB port for both JTAG and Mass Storage Devices (or CDC)? This can either beIt enumerates as a composite device For the first 10 seconds of booting it’s JTAG, but also switches over to MSD ...Read more

Hi everyone,

Is it possible to use the USB port for both JTAG and Mass Storage Devices (or CDC)?

This can either be

  • It enumerates as a composite device
  • For the first 10 seconds of booting it’s JTAG, but also switches over to MSD if nothing has connected

I’m using the ESP32-S3-Mini and I am using every pin, so I can not use the external JTAG interface.

Thank You

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cdcesp32jtagportusb
  1. nidhi singh

    Hello, Yes, it is possible to use the USB port for both JTAG and Mass Storage Devices (or CDC) on the ESP32-S3-Mini. This can be achieved by configuring the USB device to appear as a composite device, which means that it can present itself to the host as multiple devices at the same time. The firstRead more

    Hello,

    Yes, it is possible to use the USB port for both JTAG and Mass Storage Devices (or CDC) on the ESP32-S3-Mini. This can be achieved by configuring the USB device to appear as a composite device, which means that it can present itself to the host as multiple devices at the same time.

    The first option is impossible, as USB-serial-JTAG (which provides the JTAG connection) and USB-OTG (which can provide the mass storage functionality) can’t be connected to the USB pins at the same time. The second option is viable.

    Thank You

    Nidhi Singh

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Avs Mohan
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Avs Mohan
Asked: August 10, 2022In:
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Hi Team, I Tried the RA4M2- EVK driver code to make that work for R7FA4M2AD3CFL. But no luck. Kindly post the link where I can find the USB CDC illustration code for the R7FA4M2AD3CFL custom board to check USB functionality. Thanks,

Hi Team,

I Tried the RA4M2- EVK driver code to make that work for R7FA4M2AD3CFL. But no luck.
Kindly post the link where I can find the USB CDC illustration code for the R7FA4M2AD3CFL custom board to check USB functionality.

Thanks,

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cdccodemicrocontrollerusb
  1. Twinkle Garg

    The MCU installed in the EK- RA4M2 is the same as yours but have 100 pins rather of 48 pins. So I suppose the code illustration of the EK- RA4M2 should also work on your custom board without changes.

    The MCU installed in the EK- RA4M2 is the same as yours but have 100 pins rather of 48 pins. So I suppose the code illustration of the EK- RA4M2 should also work on your custom board without changes.

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