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STEVAL-IDB008V1M BlueNRG-M2SA SensorDemoBLESensor example

dgold.1
Associate III

Hello,

We are evaluating Bluetooth capability to our system using ST Bluetooth module, in order to eventually use  BLUENRG-M0A in our company products.
We are using STEVAL-IDB008V1M BlueNRG-M2SA evaluation platform connected to STM32H735 host.
Our goal is to transmit and receive small amount of data from and to the smartphone.
At the smartphone we are using ST BLE toolbox application.
Generally, the system works OK using the SensorDemoBLESensor example, however, we encountered difficulty that we do not know how to solve.

After connecting successfully to the smartphone application:
1. We can transmit 1 or 2 bytes from smartphone to the BLE target.
Any attempt to transmit more than 2 bytes fails.
2. We can transmit from BLE target to the smartphone up to 20 bytes.
   Any attempt to transmit more than 20 bytes fails.

Please explain how to use the SensorDemoBLESensor example for transmitting more than 2 bytes from smartphone and transmitting more 20 bytes from BLE target.

Thank you,
Dotan

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