Maximum number of bytes can be sent at a time to mobile device ?

[Anonymous]

Hi,

I wanted to send the data packets from ble to mobile.it's working fine  , and  the packet size is 20bytes .

Now i want to send more number of bytes per each packet.

can you please tell me maximum number of bytes sending /packet supported by psoc 4 ble.

Thanks in advance.

[Owen_Zhang123 · Accepted solution]

Hi Trivenu,

You can set the ATT MTU size to 512 byte, then the maximum number of bytes is 509.

You can find more details here: Maximum Packet Size According to MTU - KBA203312

Regards,

Owen

[Anonymous]

Note: Both the phone and the device need to agree on using the larger MTU to function properly. Technically the central-side will control the MTU size, but if the peripheral never uses it, then it is as good as not being enabled, and I'm unaware of how the peripheral will handle larger-than-MTU packets received from the central-side.