infineon4engineers Facebook

infineon@google+ Google+

infineon@linkedin linkedin

infineon4engi@twitter twitter

infineon@youtube youtube

+ Reply to Thread
Results 1 to 2 of 2

Thread: QSPI - TC275 - Read data from register

  1. #1
    Beginner Beginner vinicius.oliveira is on a distinguished road
    Join Date
    Jun 2018
    Posts
    9
    Points
    105

    QSPI - TC275 - Read data from register

    Hello,

    In current project I need to interface the uC SPI with CAN transceiver.

    The QSPI channel is working properly with all configurations, but for example when I try to use "IfxQspi_SpiMaster_exchange", where is the function going to store the data collected from the device? For example I'm trying to read register 0xFD and the data should be 0x70 or 0x74, but I don't know where the data is stored.


    Does someone have any example with QSPI reading data?


    Thanks for your support.

  2. #2
    Beginner Beginner vinicius.oliveira is on a distinguished road
    Join Date
    Jun 2018
    Posts
    9
    Points
    105
    I manage to send 0xFD, and get response from the uC 0x74 which is the ID of the device TJA1145FD.

    Click image for larger version

Name:	SEND_FD_GET_74.jpg
Views:	4
Size:	59.1 KB
ID:	3551

    The problem now is, I'm using the exchange function to send/receive data:

    // wait until transfer of previous data stream is finished

    while( IfxQspi_SpiMaster_getStatus(&spiChannel) == SpiIf_Status_busy );

    // send/receive new stream

    IfxQspi_SpiMaster_exchange(&spiChannel, &spiTxBuffer, &spiRxBuffer, 2);

    But for example, when I send 0xFD, the response will be empty(spiRxBuffer). And when I use the above function again with any other data, let's suppose I send 0xFF, than I have the response on spiRxBuffer.

    Basically the response from the message just appears in the spiRxBuffer after sending another message.

    Do you have any idea why this is happening?

    Thanks so much.

+ Reply to Thread

Tags for this Thread

Disclaimer

All content and materials on this site are provided “as is“. Infineon makes no warranties or representations with regard to this content and these materials of any kind, whether express or implied, including without limitation, warranties or representations of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, whether express or implied, is granted by Infineon. Use of the information on this site may require a license from a third party, or a license from Infineon.


Infineon accepts no liability for the content and materials on this site being accurate, complete or up- to-date or for the contents of external links. Infineon distances itself expressly from the contents of the linked pages, over the structure of which Infineon has no control.


Content on this site may contain or be subject to specific guidelines or limitations on use. All postings and use of the content on this site are subject to the Usage Terms of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Usage Terms of this site. Infineon reserves the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.