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Alex thomas
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Alex thomas
Asked: June 5, 2023In: Microcontroller

How to block the R_SPI_WriteRead Function Easily?

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Hi, I need to read SPI registers from the assignment as well as ISR. So setting a flag isn’t an option and I can’t take semaphores from ISR. Is there a way to block the R_SPI_WriteRead function? Thank You Alex Thomas

Hi,

I need to read SPI registers from the assignment as well as ISR. So setting a flag isn’t an option and I can’t take semaphores from ISR.

Is there a way to block the R_SPI_WriteRead function?

Thank You

Alex Thomas

Read less
assignmentRegisterssemaphoresspiwriteread
  1. Julian White
    Added an answer on June 7, 2023 at 9:52 am

    Hello Alex, By default, the perpetration of the drivers in FSP is nonblocking. This is happening to improve the effectiveness of your code. That is the reason callback functions are added in order to be sure that the operation you want to perform is completed. Let's say for example that you want toRead more

    Hello Alex,

    By default, the perpetration of the drivers in FSP is nonblocking. This is happening to improve the effectiveness of your code. That is the reason callback functions are added in order to be sure that the operation you want to perform is completed.

    Let’s say for example that you want to perform a UART read, and you call R_SCI_UART_Read() API, this API’ll return immediately and your code will enter the callback function you created in order to check if data is ready and if the read operation is actually completed.

    In case you would like to make blocking the operation of R_SPI_WriteRead() maybe you should consider adding a wait after the call of the API in your code by using R_BSP_SoftwareDelay(), if this is what you’re meaning.

    By making tests you can find the proper delay you need to set.

    Thank you!

    Best Regards,
    Julian White

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  • 1 Answer
Answer
techfreak
  • 0
techfreak
Asked: July 7, 2022In: Microcontroller

Serial number/Unique ID in Renesas(RZ/A2M) chip

  • 0

Is there any way to get the Serial Number / Unique ID of the Renesas RZ/A2M chip ?  I have tried checking the hardware manual, but there is no API or registers regarding the chip serial number.

Is there any way to get the Serial Number / Unique ID of the Renesas RZ/A2M chip ? 

I have tried checking the hardware manual, but there is no API or registers regarding the chip serial number.

Read less
APIRegistersrz/a2mserial numberunique id
  1. dev krishnan
    Added an answer on July 12, 2022 at 5:09 pm

    Hi techfreak, There are no serial numbers in RZ/A2M.

    Hi techfreak,

    There are no serial numbers in RZ/A2M.

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  • 1 Answer
Answer

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