Forums - QCA4020 SPI communication not working on my silex board

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QCA4020 SPI communication not working on my silex board
akshay.b
Join Date: 2 Aug 19
Posts: 62
Posted: Wed, 2019-09-25 07:06
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Hello,

I was just testing the SPI communication using QCLI_demo project, i have passed the command on CLI as you can see below.

Here while debugging found that the code is getting stuck at 

qurt_signal_wait(&spi_signal, SPI_SIGNAL_TRNSFR_COMPLETE, QURT_SIGNAL_ATTR_CLEAR_MASK); and also nothing is displaying on logic analyzer as i am using echo mode, kindly suggest me possible solution for this.

Also there is no printfunction called inthe cb function for SPI.

 

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Peripherals> 1
 
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Peripherals> 10
 
Peripherals\SPI> 1
 
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Peripherals\SPI> spi_test 1
 
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akshaay
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Re: QCA4020 SPI communication not working on my silex board
c_rpedad
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Join Date: 18 Jun 18
Location: San Jose
Posts: 317
Posted: Mon, 2019-09-30 14:59
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Kindly Make sure the JTAG jumper settings are removed while verifying SPI functionality.
 

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Re: QCA4020 SPI communication not working on my silex board
akshay.b
Join Date: 2 Aug 19
Posts: 62
Posted: Fri, 2019-10-04 01:06
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Hello,

Now the SPI is running properly as i can write data and view it on logic analyzer.

How can i accomplish a case for SPI communication where i want to write and read a data continuously in a single chip select operation.

Example : i want to read data in an EEPROM chip, so i Transmit memory address and read a byte from that address in continuous communication. during this entire communication my chip select will be low.

I have written below code for it

 

    data_size_tx = 4;
    data_size_rx = 1;
    
    tx_info.buf_len = data_size_tx;
    rx_info.buf_len = data_size_rx;
 
  //Allocating buffer length for TX & RX using malloc
  //data in rx_info.buf_phys_addr is not set to NULL
 
    tx_info.buf_phys_addr = write_buf;
    rx_info.buf_phys_addr = read_buf;
 
    result = qapi_SPIM_Full_Duplex(hSPI, &spi_device_config, &tx_info, &rx_info, spi_io_complete_cb, NULL);
    if (result != 0)
    {
        QCLI_Printf(qcli_spim_group,"spi write failed with err %x\n",result);
        Test_Result = QCLI_STATUS_ERROR_E;
        return Test_Result;
    }
 
    result = qurt_signal_wait(&spi_Tx_done, sig_mask, QURT_SIGNAL_ATTR_WAIT_ALL);
    if (result != sig_mask)
    {
        QCLI_Printf(qcli_spim_group,"waiting for test thread to finish - failed\n");
        Test_Result = QCLI_STATUS_ERROR_E;
        return Test_Result;
    }
 

ONLY THE TRANSMITTED DATA CAN BE SEEN ON LOGIC ANALYZER AND THE CHIP SELECT GOES HIGH AFTER THAT.

 

Is the code written correctly for the case i need to achieve?

Suggest a solution ASAP.

Thank you.

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Re: QCA4020 SPI communication not working on my silex board
akshay.b
Join Date: 2 Aug 19
Posts: 62
Posted: Mon, 2019-10-21 04:05
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Hello,

Waiting for the reply over SPI communicaiton. A sooner help will be appretiated.

 

Thank you

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