SPI1 Initialization in FRDMKW-38 HRS demo code

[Jangra]

Hello sir, How to use SPI1 instead of UART in HRS demo code (FRDMKW-38) .....?

[nxf56274]

Hi,

What information do you want to send using spi? You can put your spi initialization in function 'BleApp_Init'. 

Have a great day,
TIC

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[Jangra]

I want to communicate with lizard using SPI .

[nxf56274]

Hi,

You can create a timer to call the spi read/write function at the fixed duration to communicate with your device. Using TMR_AllocateTimer to allocate the timer ID. Using TMR_StartLowPowerTimer to start the timer. And you should define the callback function as parameter to give the TMR_StartLowPowerTimer.  

Have a great day,
TIC

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[Jangra]

Or you can share demo code if you have because which RF IC i am using that is also manufactured by NXP .

I want to receive data using lizard RF IC which is communicating via SPI with MKW38 and send data to mobile application Using Bluetooth. 

[Jangra]

Hello sir,

Thank you for your reply.

Actually i am learner so could you please help me from where should i start in code ?

[nxf56274]

Hi,

In common, you should follow this link custom_profile.

If you want to see the results quickly, you can try this. The hrs example send the random number to mobile in function 'TimerMeasurementCallback'. So in this function, you can add the spi read to read your RF IC data.   Then use 'Hrs_RecordHeartRateMeasurement' to send the data. I have told you where to put the spi initial. 

The first way, if you use our app iot tool box, you won't see the results. You should use the app nrf connect. It will show you the new profile you configure.

Have a great day,
TIC

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[Jangra]

Please share any demo code for SPI1 interfacing in mkw-38...

[nxf56274]

Hi,

Sorry, we do not have the demo. We have the spi example in 'boards\frdmkw38\driver_examples\dspi'.

You have to porting it to the ble project.

Have a great day,
TIC

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[Jangra]

okey,,,,,,,,,,,

Thank you sir......