STM32WB BLE data transmission losses

[Aishwarya]

STM32WB firmware updates v1.10.0 introduces large no of data packet loss in high-speed data transmission.

[Remi QUINTIN]

​Can you quantify the term "large number"?

High-speed = 2M Phy?

Which sw project from  v1.10 package did you use to evaluate those losses?

[Aishwarya]

BLE protocol(Used to send the data using notify property i.e no need of ack):

BLE throughput deciding parameters value-

• Phy modulation frequency: 1MHz
• Connection interval(CI): 7.5 to 11.25 ms(milli seconds)
• MAX BLE PACKET LENGTH(MTU) size : 512(max)

User Application parameters value-

• Data rate(user define): 500 samples per second.
• size of a single packet: 46 Bytes

Issue:

• loss of data(data packet loss detected by packet ID).
• WB firmware updates after 1.8.0 are not stable i.e cause for losses.

Note:

Packet ID: last bit of every data packet and update by 1 with the next sending data packet.