FCM file transfer on UART1: how reduce the time transfer?

[contrive]

Hi everybody,

I have to transfer a text file (about 150Kbyte) via UART1 to a Q2687 modem, using FCM.

Everything works well.

The only problem is the time taken for the transfer. I noted that data are transfered at 1Kbyte/sec,
despite the uart1 is configured at 115200Kbit/sec (approx 11,5Kbyte/sec).

If I print the DataLen parameter on the Data Callback of FCM I noted that most of the time there is only 1 byte.
This leads to increase of transfer time.

Is there some parameters in FCM to change uart buffer or other tricks to speed up the process?

Thank you.

[awneil]

@contrive

If I print the DataLen parameter on the Data Callback of FCM I noted that most of the time there is only 1 byte.

This suggests that whatever’s sending the data is leaving a long delay between bytes - so that’ll be the cause of the slow transfer