RE: Reading from flash using FDS while BLE is connected

Einar Thorsrud — Wed, 01 Feb 2023 13:22:57 GMT

Hi,

[quote user=""]This seems inefficient to me. I'd rather read the flash buffers while we're connected, and not terminate the connection until all flash has been transmitted.[/quote]

I fully agree, and I don't understand the fundamental issue here. There is no problem with reading from flash while in a BLE connection. An in fact, flash is read while in a BLE connection already, as code executes from flash.

[quote user=""]Is there a problem with the approach I'm thinking of? The flash read is non blocking, so the connection may stay open for a bit of time.[/quote]

I cannot think of any reason why copying data to RAM earlier rather than later provide any benefits.

[quote user=""]Which approach is more efficient in terms of power consumption?[/quote]

Regarding current consumption I doubt you will find any measurable difference in current consumption between the two approaches you describe.

[quote user=""]Is there a recommended way of doing this to minimize idle time? (for example have 2 ram buffers- one for transmitting the data over BLE, one for reading the next data from flash?)[/quote]

No, not really. (And I would be suprised if this is where the bottlenecks are in your product).