IWR1642BOOST: How to config IWR1642 spi slave mode

terry fang

Part Number: IWR1642BOOST
Other Parts Discussed in Thread: IWR1642

I am connectting IWR1642 spi out to raspberrypi pi 4. IWR1642 is slave mode and Pi is configured as spi master.

I am flashing the spi test code ti/mmwave_sdk_03_03_00_03/packages/ti/drivers/spi/test/xwr16xx/ as i saw there is different configuration. i enabled gXWR1xxxSlaveWithMSPTest flag it seems config IWR1642 in slave mode . I send data from PI however the i dump the bfufer that recived in Test_spiMasterRead(handle, 0U); the data are not the same.

spi test code seems config spiA as 3 pin mode is it correct?

else if (gXWR1xxxSlaveWithMSPTest)

{

/* Enable output control for SPIA 3-pin Mode */

if(SOC_SPIOutputCtrl(socHandle, 0U, 0U, &errCode) < 0)

{

/* Debug Message: */

System_printf ("Debug: SOC_SPIOutputCtrl failed with Error [%d]\n", errCode);

return;

}

void Test_spiWithMSP43x(bool master, uint32_t bitRate) {

params.frameFormat = SPI_POL0_PHA0;

params.shiftFormat = SPI_MSB_FIRST;

params.pinMode = SPI_PINMODE_3PIN;

params.eccEnable = 1

}

Thanks,

Terry

over 5 years ago

0 Yogesh Siraswar over 5 years ago

TI__Mastermind 20745 points

Hi Terry,

Yes it is configured in 3-pin mode. When you say data is not the same:

1) Are you getting random data; OR

2) Some bytes are in-correct

3) Did you check if you are getting swapped bytes.

Thanks

Yogesh

0 terry fang over 5 years ago in reply to Yogesh Siraswar

Prodigy 170 points

HI Yogesh,

Data is random not swap. if it is 3 pin mode . how to connnect TI spi pin to raspberrypi board ? which SPI pin need to be used ?

0 Yogesh Siraswar over 5 years ago in reply to terry fang

TI__Mastermind 20745 points

Hi Terry,

The MSP example is for MSP432. I am checking for your board. Will get back soon.

Thanks

Yogesh

0 terry fang over 5 years ago in reply to Yogesh Siraswar

Prodigy 170 points

Hi Yogesh,

Any update on previous question ? I have another question

In salve mode i saw a spi wrtie max len 128 bytes in 16bit mode . if I have a data let's say 128x3 in bytes. Do I need call spi_write 3 times or I only need call once and spi driver will break into 3 transcations ?

Thanks

0 Akash Gondalia over 5 years ago in reply to terry fang

TI__Guru 50240 points

Hi Terry,

We are still looking into this and should have an answer for you in the next few days.

Cheers,

Akash

0 Yogesh Siraswar over 5 years ago in reply to terry fang

TI__Mastermind 20745 points

Terry,

I am still trying to get response for your board.

On transferring 128*3 bytes, you need to call SPI write 3 times.

Thanks

Yogesh

0 Yogesh Siraswar over 5 years ago in reply to Yogesh Siraswar

TI__Mastermind 20745 points

Hi Terry,

You should be able to connect to raspberry-pi in 4-pin mode. Please see the TRM to see the timing requirement when 16xx is configured as SPI slave.

Thanks

Yogesh

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IWR1642BOOST: How to config IWR1642 spi slave mode