nRF52832 + EM4325 RX problem using SPI

RE: nRF52832 + EM4325 RX problem using SPI

SKV — Fri, 09 Feb 2018 04:58:52 GMT

Thank you for replaying. The problem is solved it was Reading and writing in some other memory location which was not specified.

RE: nRF52832 + EM4325 RX problem using SPI

SKV — Sat, 06 Jan 2018 11:58:37 GMT

The image is for colck and the MOSI. Yes I have tried placing the break-point in the spi_event_handler and have checked the rx_buf, the results are the same.I have attached the project in the main question please check the attachments. Thanks for replaying

RE: nRF52832 + EM4325 RX problem using SPI

Jørgen Holmefjord — Wed, 03 Jan 2018 15:21:51 GMT

I can only see clock and one data line in your image, is this MISO or MOSI line? Could you please post both data lines? Have you put a breakpoint in spi_event_handler and checked the content of m_rx_buf, or are you only relaying on the if check and the printing of the content? Could you upload your entire project for debugging?

RE: nRF52832 + EM4325 RX problem using SPI

SKV — Sat, 23 Dec 2017 06:07:59 GMT

Hi Jørgen, This is the logic trace of clock and MOIS(photos.app.goo.gl/CCqoTVqK4wHTuCGa2). I tried it by using the command (command to write is 0XE8 in m4325),so i was trying it with the dummy strings.YES i tried connecting like that also but NO luck. Thanks you:)

RE: nRF52832 + EM4325 RX problem using SPI

Jørgen Holmefjord — Wed, 20 Dec 2017 06:52:56 GMT

Could you post a logic trace of the MISO/MOSI lines? Are you sending any command that the EM4325 can understand, or are you sending the dummy TEST_STRING shown in your code? Have you tried connecting MISO to MOSI and see if you are receiving what you are sending?

RE: nRF52832 + EM4325 RX problem using SPI

SKV — Tue, 19 Dec 2017 11:50:54 GMT

Hi Jørgen , Thanks for replying . As you mentioned in your comment i have checked it in the logic analyser, am getting the output in the SPI bus lines but cannot be seen in the m_rx_buf (receiver buffer). What might be the issues !!

RE: nRF52832 + EM4325 RX problem using SPI

Jørgen Holmefjord — Mon, 18 Dec 2017 12:33:54 GMT

Have you checked the SPI bus using a logic analyzer, to see if anything is transferred to/from the peripheral? Have you debugged the code, to see if any error codes are returned, or to check if it enters the spi event handler at any point?