Unable to communicate with UJA1169TK/F/3Z by Flexio_SPI

[1040180003]

Hi, guys!

I am testing the UJA1169TK/F/3Z and my MCU is S32K146（64 pins）.

The 1169 is configured in Forced Normal mode in the factory.  Therefore, I can now use the CAN communication even if I do not configure 1169. These have been debugged and passed on my board.

But when I use flexio_SPI to read the status of 1169, the return is always 0.

I know that in the SDK "sbc_uja116x_driver.c"  use LPSPI by default, but I can only use the flexio SPI on my board.

So, I made some changes based on the SDK.

My expert component is configured as follows：

MOSI : flexio 5 = PTE 11

MISO : flexio 4 = PTE 10

CS : flexio 6 = PTE 4

SCK : flexio 7 = PTE 5

Some related code in my project：

status = FLEXIO_DRV_InitDevice(INST_FLEXIO_SPI1, &flexIODeviceState);

status = FLEXIO_SPI_DRV_MasterInit(INST_FLEXIO_SPI1, &flexio_spi1_MasterConfig0, &flexIOSPIState_Master);

uint8_t regData;

status = SBC_DataTransfer(SBC_UJA_IDENTIF, NULL, &regData);

In the "SBC_DataTransfer()", I replace the "LPSPI_DRV_MasterTransferBlocking()" with "FLEXIO_SPI_DRV_MasterTransferBlocking()"

Below is the debug result:

From the datasheet, these registers should be readable：

Although the read returns are successful, the results are all zero.

My environment is：

S32 Design Studio for ARM Version: 2.2

SDK 3.0.2

Please give me some advices.

Thanks!

Lu

[TomasVaverka]

Hi Lu,

Your configuration seems to be correct. However, it would be good to see what is going on on the bus. Do you have a logic analyzer or an oscilloscope to capture the SPI traffic?

Also I would recommend you taking a closer look at the attached AH1306 describing the SPI interface and software flow in details. If you create a standard ticket, I can share with you also the UJA1169 example project which demonstrates how to initialize the UJA1169, trigger the watchdog, change operation modes, handle events etc.

Best regards,

Tomas

[1040180003]

Thanks for your reply, Tomas!

I have just create a Case（case number: 00265627）,  is it right?

Lu

[TomasVaverka]

Hi Lu,

Yes, I have already sent you the example project.

Best regards,

Tomas

[1040180003]

Thank you!

I will study this example, and I will continue to update if there are progress and problems.