SPI_WriteData

[_Ferrari_]

dear all,

I'm using SPI interface and I set 100000 as baudrate / 16 data bit. I'm using SPI_WriteData to transfer the data to a periferal and it works.

I inserted a delay function SDK_DelayAtLeastUs(160U, SDK_DEVICE_MAXIMUM_CPU_CLOCK_FREQUENCY); to avoid any overload error.

Instead of inserting a delay I would like to test a bit of the SPI periphery that indicates that the data transmission is completed

// now I'm using the following code
SPI_WriteData(FLEXCOMM4_PERIPHERAL, data, configFlags);
SDK_DelayAtLeastUs(160U, SDK_DEVICE_MAXIMUM_CPU_CLOCK_FREQUENCY);

// but I would like to use the following procedure
SPI_WriteData(FLEXCOMM4_PERIPHERAL, data, configFlags);
while(SPI_checkTransmittedFlag(FLEXCOMM4_PERIPHERAL)) {}

Is there any SPI_chekTransmittedFlag that do that ?

Thank you very much for your help and cooperation

regards

[_Ferrari_]

Solved!!

[Alice_Yang]

Hello,

What about the part number of your mcu?

BR

Alice

[_Ferrari_]

Dear Alice,

I'm using LPC55S28 assembled in LPC55S28 -EVK board

regards

[Alice_Yang · Accepted solution]

Hello,

Yes, you can check the register FIFOSTAT,

You can also use transmit interrupt:

Recommend you refer to SPI demo under SDK, it includes polling and interrupt mode.

BR

Alice