LPSTK-CC1352R: How to modify the multi-sensor temperature service to send 128 samples(float)?

Matthew Chen

Hi Team,

I am modifying the temperature service in multi-sensor example. I replace the profile_readSensor with my own code. the data i want to send is 128 samples(float type). Below is my code. i am new to this BLE programming I try to use the ''for(char i=0;i<128;i++)'' to send all the data,but it can only send the last 16 samples out and missing the data from ADCdatareceiveBuffer[0]-ADCdatareceiveBuffer[111]See the pic 2.

1. Could you help on how to send all these data out? is there any examples i can refer to?

2. I also add a GIPO interrupt in the ''bStatus_t TMP117Profile_init(I2C_Handle *pHandle)'' to trigger the SPI transfer to get the sensor data. But when run the program, it cannot work. The service cannot respond to the GPIO interrupt. Do you have any suggestion for this?

Matthew

over 2 years ago

0 Marie H over 2 years ago

TI__Guru* 83881 points

Hi Matthew,

1. If I understand you correctly you want to send 128 different samples (not update one number 128 times).

In BLE the intention is to set up a characteristic for every type of data you need to send. E.g. set up 128 characteristics for your data points.

You can read more about characteristics, services and how to send data in the SimpleLink Acaemy module BLE Custom Profile: https://dev.ti.com/tirex/explore/node?node=A__ATSMDAXx5vlu5FGTUknofQ__com.ti.SIMPLELINK_ACADEMY_CC13XX_CC26XX_SDK__AfkT0vQ__LATEST&placeholder=true

2. Are you doing the SPI transactions in your application task or in a dedicated task?

I would recommend using a dedicated task.

The application task is based on events. You can enable the interrupt, and the interrupt callback should post an event to the application event queue.

Cheers,

Marie H

Bluetooth®︎

Bluetooth forum

LPSTK-CC1352R: How to modify the multi-sensor temperature service to send 128 samples(float)?