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vikas Nagpal
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vikas Nagpal
Asked: June 28, 2022In: Microcontroller

Free RTOS with USB-PCDC on Renesas RA6M3

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In developing a Renesas RA6M3 project based on Free RTOS, using PCDC to transfer data . Here, write happens properly but once we get read complete interrupt it goes into Default handler. Kindly give proper solution for this.Read more

In developing a Renesas RA6M3 project based on Free RTOS, using PCDC to transfer data . Here, write happens properly but once we get read complete interrupt it goes into Default handler. Kindly give proper solution for this.

Read less
Default handlerfreertospcdcra6m3renesasRenesas Microcontroller
  1. pallavi sharma
    Added an answer on July 29, 2022 at 5:12 pm

    It seems to be caused by the read buffer (g_read_buf) only being 8 bytes in size, whereas the max packet size for the full speed bulk transfer is 64 bytes. The USB driver sets up a 64 byte transfer with the DMAC when R_USB_Read() is called, then the DMAC transfer over writes some other data in RAM.

    It seems to be caused by the read buffer (g_read_buf) only being 8 bytes in size, whereas the max packet size for the full speed bulk transfer is 64 bytes. The USB driver sets up a 64 byte transfer with the DMAC when R_USB_Read() is called, then the DMAC transfer over writes some other data in RAM.

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